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openssl/ectest.c
Dmitry Belyavskiy 53b85f538c OpenSSL will generate keys with prime192v1 curve if it is provided using explicit parameters 
Resolves: rhbz#1977867
2022-02-22 16:32:34 +01:00

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/*
* Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* EC_KEY low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <string.h>
#include "internal/nelem.h"
#include "testutil.h"
#include <openssl/ec.h>
#ifndef OPENSSL_NO_ENGINE
# include <openssl/engine.h>
#endif
#include <openssl/err.h>
#include <openssl/obj_mac.h>
#include <openssl/objects.h>
#include <openssl/rand.h>
#include <openssl/bn.h>
#include <openssl/opensslconf.h>
#include <openssl/core_names.h>
#include <openssl/param_build.h>
#include <openssl/evp.h>
static size_t crv_len = 0;
static EC_builtin_curve *curves = NULL;
/* test multiplication with group order, long and negative scalars */
static int group_order_tests(EC_GROUP *group)
{
BIGNUM *n1 = NULL, *n2 = NULL, *order = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL, *S = NULL;
const EC_POINT *G = NULL;
BN_CTX *ctx = NULL;
int i = 0, r = 0;
if (!TEST_ptr(n1 = BN_new())
|| !TEST_ptr(n2 = BN_new())
|| !TEST_ptr(order = BN_new())
|| !TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(G = EC_GROUP_get0_generator(group))
|| !TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_ptr(S = EC_POINT_new(group)))
goto err;
if (!TEST_true(EC_GROUP_get_order(group, order, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, order, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
#ifndef OPENSSL_NO_DEPRECATED_3_0
|| !TEST_true(EC_GROUP_precompute_mult(group, ctx))
#endif
|| !TEST_true(EC_POINT_mul(group, Q, order, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_copy(P, G))
|| !TEST_true(BN_one(n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
|| !TEST_true(BN_sub(n1, order, n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_invert(group, Q, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx)))
goto err;
for (i = 1; i <= 2; i++) {
#ifndef OPENSSL_NO_DEPRECATED_3_0
const BIGNUM *scalars[6];
const EC_POINT *points[6];
#endif
if (!TEST_true(BN_set_word(n1, i))
/*
* If i == 1, P will be the predefined generator for which
* EC_GROUP_precompute_mult has set up precomputation.
*/
|| !TEST_true(EC_POINT_mul(group, P, n1, NULL, NULL, ctx))
|| (i == 1 && !TEST_int_eq(0, EC_POINT_cmp(group, P, G, ctx)))
|| !TEST_true(BN_one(n1))
/* n1 = 1 - order */
|| !TEST_true(BN_sub(n1, n1, order))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n1, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
/* n2 = 1 + order */
|| !TEST_true(BN_add(n2, order, BN_value_one()))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
/* n2 = (1 - order) * (1 + order) = 1 - order^2 */
|| !TEST_true(BN_mul(n2, n1, n2, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx)))
goto err;
/* n2 = order^2 - 1 */
BN_set_negative(n2, 0);
if (!TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
/* Add P to verify the result. */
|| !TEST_true(EC_POINT_add(group, Q, Q, P, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_false(EC_POINT_is_at_infinity(group, P)))
goto err;
#ifndef OPENSSL_NO_DEPRECATED_3_0
/* Exercise EC_POINTs_mul, including corner cases. */
scalars[0] = scalars[1] = BN_value_one();
points[0] = points[1] = P;
if (!TEST_true(EC_POINTs_mul(group, R, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINT_dbl(group, S, points[0], ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, R, S, ctx)))
goto err;
scalars[0] = n1;
points[0] = Q; /* => infinity */
scalars[1] = n2;
points[1] = P; /* => -P */
scalars[2] = n1;
points[2] = Q; /* => infinity */
scalars[3] = n2;
points[3] = Q; /* => infinity */
scalars[4] = n1;
points[4] = P; /* => P */
scalars[5] = n2;
points[5] = Q; /* => infinity */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 6, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
#endif
}
r = 1;
err:
if (r == 0 && i != 0)
TEST_info(i == 1 ? "allowing precomputation" :
"without precomputation");
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
EC_POINT_free(S);
BN_free(n1);
BN_free(n2);
BN_free(order);
BN_CTX_free(ctx);
return r;
}
static int prime_field_tests(void)
{
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL, *scalar3 = NULL;
EC_GROUP *group = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL;
BIGNUM *x = NULL, *y = NULL, *z = NULL, *yplusone = NULL;
#ifndef OPENSSL_NO_DEPRECATED_3_0
const EC_POINT *points[4];
const BIGNUM *scalars[4];
#endif
unsigned char buf[100];
size_t len, r = 0;
int k;
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
/*
* applications should use EC_GROUP_new_curve_GFp so
* that the library gets to choose the EC_METHOD
*/
|| !TEST_ptr(group = EC_GROUP_new(EC_GFp_mont_method())))
goto err;
buf[0] = 0;
if (!TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(z = BN_new())
|| !TEST_ptr(yplusone = BN_new()))
goto err;
/* Curve P-224 (FIPS PUB 186-2, App. 6) */
if (!TEST_true(BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFF000000000000000000000001"))
|| !TEST_int_eq(1, BN_check_prime(p, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE"))
|| !TEST_true(BN_hex2bn(&b, "B4050A850C04B3ABF5413256"
"5044B0B7D7BFD8BA270B39432355FFB4"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "B70E0CBD6BB4BF7F321390B9"
"4A03C1D356C21122343280D6115C1D21"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 0, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFF16A2E0B8F03E13DD29455C5C2A3D"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-224 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "BD376388B5F723FB4C22DFE6"
"CD4375A05A07476444D5819985007E34"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 224)
|| !group_order_tests(group)
/* Curve P-256 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFF000000010000000000000000"
"00000000FFFFFFFFFFFFFFFFFFFFFFFF"))
|| !TEST_int_eq(1, BN_check_prime(p, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFF000000010000000000000000"
"00000000FFFFFFFFFFFFFFFFFFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "5AC635D8AA3A93E7B3EBBD55769886BC"
"651D06B0CC53B0F63BCE3C3E27D2604B"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "6B17D1F2E12C4247F8BCE6E563A440F2"
"77037D812DEB33A0F4A13945D898C296"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 1, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFF00000000FFFFFFFFFFFFFFFF"
"BCE6FAADA7179E84F3B9CAC2FC632551"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-256 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "4FE342E2FE1A7F9B8EE7EB4A7C0F9E16"
"2BCE33576B315ECECBB6406837BF51F5"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 256)
|| !group_order_tests(group)
/* Curve P-384 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE"
"FFFFFFFF0000000000000000FFFFFFFF"))
|| !TEST_int_eq(1, BN_check_prime(p, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE"
"FFFFFFFF0000000000000000FFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "B3312FA7E23EE7E4988E056BE3F82D19"
"181D9C6EFE8141120314088F5013875A"
"C656398D8A2ED19D2A85C8EDD3EC2AEF"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "AA87CA22BE8B05378EB1C71EF320AD74"
"6E1D3B628BA79B9859F741E082542A38"
"5502F25DBF55296C3A545E3872760AB7"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 1, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFC7634D81F4372DDF"
"581A0DB248B0A77AECEC196ACCC52973"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-384 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "3617DE4A96262C6F5D9E98BF9292DC29"
"F8F41DBD289A147CE9DA3113B5F0B8C0"
"0A60B1CE1D7E819D7A431D7C90EA0E5F"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 384)
|| !group_order_tests(group)
/* Curve P-521 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"))
|| !TEST_int_eq(1, BN_check_prime(p, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "051"
"953EB9618E1C9A1F929A21A0B68540EE"
"A2DA725B99B315F3B8B489918EF109E1"
"56193951EC7E937B1652C0BD3BB1BF07"
"3573DF883D2C34F1EF451FD46B503F00"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "C6"
"858E06B70404E9CD9E3ECB662395B442"
"9C648139053FB521F828AF606B4D3DBA"
"A14B5E77EFE75928FE1DC127A2FFA8DE"
"3348B3C1856A429BF97E7E31C2E5BD66"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 0, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA"
"51868783BF2F966B7FCC0148F709A5D0"
"3BB5C9B8899C47AEBB6FB71E91386409"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-521 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "118"
"39296A789A3BC0045C8A5FB42C7D1BD9"
"98F54449579B446817AFBD17273E662C"
"97EE72995EF42640C550B9013FAD0761"
"353C7086A272C24088BE94769FD16650"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 521)
|| !group_order_tests(group)
/* more tests using the last curve */
/* Restore the point that got mangled in the (x, y + 1) test. */
|| !TEST_true(EC_POINT_set_affine_coordinates(group, P, x, y, ctx))
|| !TEST_true(EC_POINT_copy(Q, P))
|| !TEST_false(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_dbl(group, P, P, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(EC_POINT_invert(group, Q, ctx)) /* P = -2Q */
|| !TEST_true(EC_POINT_add(group, R, P, Q, ctx))
|| !TEST_true(EC_POINT_add(group, R, R, Q, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, R)) /* R = P + 2Q */
|| !TEST_false(EC_POINT_is_at_infinity(group, Q)))
goto err;
#ifndef OPENSSL_NO_DEPRECATED_3_0
TEST_note("combined multiplication ...");
points[0] = Q;
points[1] = Q;
points[2] = Q;
points[3] = Q;
if (!TEST_true(EC_GROUP_get_order(group, z, ctx))
|| !TEST_true(BN_add(y, z, BN_value_one()))
|| !TEST_BN_even(y)
|| !TEST_true(BN_rshift1(y, y)))
goto err;
scalars[0] = y; /* (group order + 1)/2, so y*Q + y*Q = Q */
scalars[1] = y;
/* z is still the group order */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINTs_mul(group, R, z, 2, points, scalars, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, R, Q, ctx))
|| !TEST_true(BN_rand(y, BN_num_bits(y), 0, 0))
|| !TEST_true(BN_add(z, z, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = y;
scalars[1] = z; /* z = -(order + y) */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P))
|| !TEST_true(BN_rand(x, BN_num_bits(y) - 1, 0, 0))
|| !TEST_true(BN_add(z, x, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = x;
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!TEST_ptr(scalar3 = BN_new()))
goto err;
BN_zero(scalar3);
scalars[3] = scalar3;
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 4, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
#endif
TEST_note(" ok\n");
r = 1;
err:
BN_CTX_free(ctx);
BN_free(p);
BN_free(a);
BN_free(b);
EC_GROUP_free(group);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
BN_free(x);
BN_free(y);
BN_free(z);
BN_free(yplusone);
BN_free(scalar3);
return r;
}
static int internal_curve_test(int n)
{
EC_GROUP *group = NULL;
int nid = curves[n].nid;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))) {
TEST_info("EC_GROUP_new_curve_name() failed with curve %s\n",
OBJ_nid2sn(nid));
return 0;
}
if (!TEST_true(EC_GROUP_check(group, NULL))) {
TEST_info("EC_GROUP_check() failed with curve %s\n", OBJ_nid2sn(nid));
EC_GROUP_free(group);
return 0;
}
EC_GROUP_free(group);
return 1;
}
static int internal_curve_test_method(int n)
{
int r, nid = curves[n].nid;
EC_GROUP *group;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))) {
TEST_info("Curve %s failed\n", OBJ_nid2sn(nid));
return 0;
}
r = group_order_tests(group);
EC_GROUP_free(group);
return r;
}
static int group_field_test(void)
{
int r = 1;
BIGNUM *secp521r1_field = NULL;
BIGNUM *sect163r2_field = NULL;
EC_GROUP *secp521r1_group = NULL;
EC_GROUP *sect163r2_group = NULL;
BN_hex2bn(&secp521r1_field,
"01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFF");
BN_hex2bn(&sect163r2_field,
"08000000000000000000000000000000"
"00000000C9");
secp521r1_group = EC_GROUP_new_by_curve_name(NID_secp521r1);
if (BN_cmp(secp521r1_field, EC_GROUP_get0_field(secp521r1_group)))
r = 0;
# ifndef OPENSSL_NO_EC2M
sect163r2_group = EC_GROUP_new_by_curve_name(NID_sect163r2);
if (BN_cmp(sect163r2_field, EC_GROUP_get0_field(sect163r2_group)))
r = 0;
# endif
EC_GROUP_free(secp521r1_group);
EC_GROUP_free(sect163r2_group);
BN_free(secp521r1_field);
BN_free(sect163r2_field);
return r;
}
/*
* nistp_test_params contains magic numbers for testing
* several NIST curves with characteristic > 3.
*/
struct nistp_test_params {
const int nid;
int degree;
/*
* Qx, Qy and D are taken from
* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/ECDSA_Prime.pdf
* Otherwise, values are standard curve parameters from FIPS 180-3
*/
const char *p, *a, *b, *Qx, *Qy, *Gx, *Gy, *order, *d;
};
static const struct nistp_test_params nistp_tests_params[] = {
{
/* P-224 */
NID_secp224r1,
224,
/* p */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001",
/* a */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE",
/* b */
"B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4",
/* Qx */
"E84FB0B8E7000CB657D7973CF6B42ED78B301674276DF744AF130B3E",
/* Qy */
"4376675C6FC5612C21A0FF2D2A89D2987DF7A2BC52183B5982298555",
/* Gx */
"B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21",
/* Gy */
"BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34",
/* order */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D",
/* d */
"3F0C488E987C80BE0FEE521F8D90BE6034EC69AE11CA72AA777481E8",
},
{
/* P-256 */
NID_X9_62_prime256v1,
256,
/* p */
"ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
/* a */
"ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
/* b */
"5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
/* Qx */
"b7e08afdfe94bad3f1dc8c734798ba1c62b3a0ad1e9ea2a38201cd0889bc7a19",
/* Qy */
"3603f747959dbf7a4bb226e41928729063adc7ae43529e61b563bbc606cc5e09",
/* Gx */
"6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
/* Gy */
"4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5",
/* order */
"ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
/* d */
"c477f9f65c22cce20657faa5b2d1d8122336f851a508a1ed04e479c34985bf96",
},
{
/* P-521 */
NID_secp521r1,
521,
/* p */
"1ff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
/* a */
"1ff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc",
/* b */
"051"
"953eb9618e1c9a1f929a21a0b68540eea2da725b99b315f3b8b489918ef109e1"
"56193951ec7e937b1652c0bd3bb1bf073573df883d2c34f1ef451fd46b503f00",
/* Qx */
"0098"
"e91eef9a68452822309c52fab453f5f117c1da8ed796b255e9ab8f6410cca16e"
"59df403a6bdc6ca467a37056b1e54b3005d8ac030decfeb68df18b171885d5c4",
/* Qy */
"0164"
"350c321aecfc1cca1ba4364c9b15656150b4b78d6a48d7d28e7f31985ef17be8"
"554376b72900712c4b83ad668327231526e313f5f092999a4632fd50d946bc2e",
/* Gx */
"c6"
"858e06b70404e9cd9e3ecb662395b4429c648139053fb521f828af606b4d3dba"
"a14b5e77efe75928fe1dc127a2ffa8de3348b3c1856a429bf97e7e31c2e5bd66",
/* Gy */
"118"
"39296a789a3bc0045c8a5fb42c7d1bd998f54449579b446817afbd17273e662c"
"97ee72995ef42640c550b9013fad0761353c7086a272c24088be94769fd16650",
/* order */
"1ff"
"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa"
"51868783bf2f966b7fcc0148f709a5d03bb5c9b8899c47aebb6fb71e91386409",
/* d */
"0100"
"085f47b8e1b8b11b7eb33028c0b2888e304bfc98501955b45bba1478dc184eee"
"df09b86a5f7c21994406072787205e69a63709fe35aa93ba333514b24f961722",
},
};
static int nistp_single_test(int idx)
{
const struct nistp_test_params *test = nistp_tests_params + idx;
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL, *x = NULL, *y = NULL;
BIGNUM *n = NULL, *m = NULL, *order = NULL, *yplusone = NULL;
EC_GROUP *NISTP = NULL;
EC_POINT *G = NULL, *P = NULL, *Q = NULL, *Q_CHECK = NULL;
int r = 0;
TEST_note("NIST curve P-%d (optimised implementation):",
test->degree);
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(m = BN_new())
|| !TEST_ptr(n = BN_new())
|| !TEST_ptr(order = BN_new())
|| !TEST_ptr(yplusone = BN_new())
|| !TEST_ptr(NISTP = EC_GROUP_new_by_curve_name(test->nid))
|| !TEST_true(BN_hex2bn(&p, test->p))
|| !TEST_int_eq(1, BN_check_prime(p, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, test->a))
|| !TEST_true(BN_hex2bn(&b, test->b))
|| !TEST_true(EC_GROUP_set_curve(NISTP, p, a, b, ctx))
|| !TEST_ptr(G = EC_POINT_new(NISTP))
|| !TEST_ptr(P = EC_POINT_new(NISTP))
|| !TEST_ptr(Q = EC_POINT_new(NISTP))
|| !TEST_ptr(Q_CHECK = EC_POINT_new(NISTP))
|| !TEST_true(BN_hex2bn(&x, test->Qx))
|| !TEST_true(BN_hex2bn(&y, test->Qy))
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(NISTP, Q_CHECK, x,
yplusone, ctx))
|| !TEST_true(EC_POINT_set_affine_coordinates(NISTP, Q_CHECK, x, y,
ctx))
|| !TEST_true(BN_hex2bn(&x, test->Gx))
|| !TEST_true(BN_hex2bn(&y, test->Gy))
|| !TEST_true(EC_POINT_set_affine_coordinates(NISTP, G, x, y, ctx))
|| !TEST_true(BN_hex2bn(&order, test->order))
|| !TEST_true(EC_GROUP_set_generator(NISTP, G, order, BN_value_one()))
|| !TEST_int_eq(EC_GROUP_get_degree(NISTP), test->degree))
goto err;
TEST_note("NIST test vectors ... ");
if (!TEST_true(BN_hex2bn(&n, test->d)))
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, n, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, G, n, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
/* set generator to P = 2*G, where G is the standard generator */
|| !TEST_true(EC_POINT_dbl(NISTP, P, G, ctx))
|| !TEST_true(EC_GROUP_set_generator(NISTP, P, order, BN_value_one()))
/* set the scalar to m=n/2, where n is the NIST test scalar */
|| !TEST_true(BN_rshift(m, n, 1)))
goto err;
/* test the non-standard generator */
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, m, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, P, m, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
#ifndef OPENSSL_NO_DEPRECATED_3_0
/* We have not performed precomp so this should be false */
|| !TEST_false(EC_GROUP_have_precompute_mult(NISTP))
/* now repeat all tests with precomputation */
|| !TEST_true(EC_GROUP_precompute_mult(NISTP, ctx))
#endif
)
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, m, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, P, m, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
/* reset generator */
|| !TEST_true(EC_GROUP_set_generator(NISTP, G, order, BN_value_one())))
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, n, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, G, n, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* regression test for felem_neg bug */
if (!TEST_true(BN_set_word(m, 32))
|| !TEST_true(BN_set_word(n, 31))
|| !TEST_true(EC_POINT_copy(P, G))
|| !TEST_true(EC_POINT_invert(NISTP, P, ctx))
|| !TEST_true(EC_POINT_mul(NISTP, Q, m, P, n, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, G, ctx)))
goto err;
r = 1;
err:
EC_GROUP_free(NISTP);
EC_POINT_free(G);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(Q_CHECK);
BN_free(n);
BN_free(m);
BN_free(p);
BN_free(a);
BN_free(b);
BN_free(x);
BN_free(y);
BN_free(order);
BN_free(yplusone);
BN_CTX_free(ctx);
return r;
}
static const unsigned char p521_named[] = {
0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x23,
};
static const unsigned char p521_explicit[] = {
0x30, 0x82, 0x01, 0xc3, 0x02, 0x01, 0x01, 0x30, 0x4d, 0x06, 0x07, 0x2a,
0x86, 0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x42, 0x01, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x30, 0x81, 0x9f, 0x04, 0x42, 0x01, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xfc, 0x04, 0x42, 0x00, 0x51, 0x95, 0x3e, 0xb9, 0x61, 0x8e, 0x1c, 0x9a,
0x1f, 0x92, 0x9a, 0x21, 0xa0, 0xb6, 0x85, 0x40, 0xee, 0xa2, 0xda, 0x72,
0x5b, 0x99, 0xb3, 0x15, 0xf3, 0xb8, 0xb4, 0x89, 0x91, 0x8e, 0xf1, 0x09,
0xe1, 0x56, 0x19, 0x39, 0x51, 0xec, 0x7e, 0x93, 0x7b, 0x16, 0x52, 0xc0,
0xbd, 0x3b, 0xb1, 0xbf, 0x07, 0x35, 0x73, 0xdf, 0x88, 0x3d, 0x2c, 0x34,
0xf1, 0xef, 0x45, 0x1f, 0xd4, 0x6b, 0x50, 0x3f, 0x00, 0x03, 0x15, 0x00,
0xd0, 0x9e, 0x88, 0x00, 0x29, 0x1c, 0xb8, 0x53, 0x96, 0xcc, 0x67, 0x17,
0x39, 0x32, 0x84, 0xaa, 0xa0, 0xda, 0x64, 0xba, 0x04, 0x81, 0x85, 0x04,
0x00, 0xc6, 0x85, 0x8e, 0x06, 0xb7, 0x04, 0x04, 0xe9, 0xcd, 0x9e, 0x3e,
0xcb, 0x66, 0x23, 0x95, 0xb4, 0x42, 0x9c, 0x64, 0x81, 0x39, 0x05, 0x3f,
0xb5, 0x21, 0xf8, 0x28, 0xaf, 0x60, 0x6b, 0x4d, 0x3d, 0xba, 0xa1, 0x4b,
0x5e, 0x77, 0xef, 0xe7, 0x59, 0x28, 0xfe, 0x1d, 0xc1, 0x27, 0xa2, 0xff,
0xa8, 0xde, 0x33, 0x48, 0xb3, 0xc1, 0x85, 0x6a, 0x42, 0x9b, 0xf9, 0x7e,
0x7e, 0x31, 0xc2, 0xe5, 0xbd, 0x66, 0x01, 0x18, 0x39, 0x29, 0x6a, 0x78,
0x9a, 0x3b, 0xc0, 0x04, 0x5c, 0x8a, 0x5f, 0xb4, 0x2c, 0x7d, 0x1b, 0xd9,
0x98, 0xf5, 0x44, 0x49, 0x57, 0x9b, 0x44, 0x68, 0x17, 0xaf, 0xbd, 0x17,
0x27, 0x3e, 0x66, 0x2c, 0x97, 0xee, 0x72, 0x99, 0x5e, 0xf4, 0x26, 0x40,
0xc5, 0x50, 0xb9, 0x01, 0x3f, 0xad, 0x07, 0x61, 0x35, 0x3c, 0x70, 0x86,
0xa2, 0x72, 0xc2, 0x40, 0x88, 0xbe, 0x94, 0x76, 0x9f, 0xd1, 0x66, 0x50,
0x02, 0x42, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa,
0x51, 0x86, 0x87, 0x83, 0xbf, 0x2f, 0x96, 0x6b, 0x7f, 0xcc, 0x01, 0x48,
0xf7, 0x09, 0xa5, 0xd0, 0x3b, 0xb5, 0xc9, 0xb8, 0x89, 0x9c, 0x47, 0xae,
0xbb, 0x6f, 0xb7, 0x1e, 0x91, 0x38, 0x64, 0x09, 0x02, 0x01, 0x01,
};
/*
* This test validates a named curve's group parameters using
* EC_GROUP_check_named_curve(). It also checks that modifying any of the
* group parameters results in the curve not being valid.
*/
static int check_named_curve_test(int id)
{
int ret = 0, nid, field_nid, has_seed;
EC_GROUP *group = NULL, *gtest = NULL;
const EC_POINT *group_gen = NULL;
EC_POINT *other_gen = NULL;
BIGNUM *group_p = NULL, *group_a = NULL, *group_b = NULL;
BIGNUM *other_p = NULL, *other_a = NULL, *other_b = NULL;
BIGNUM *group_cofactor = NULL, *other_cofactor = NULL;
BIGNUM *other_order = NULL;
const BIGNUM *group_order = NULL;
BN_CTX *bn_ctx = NULL;
static const unsigned char invalid_seed[] = "THIS IS NOT A VALID SEED";
static size_t invalid_seed_len = sizeof(invalid_seed);
/* Do some setup */
nid = curves[id].nid;
if (!TEST_ptr(bn_ctx = BN_CTX_new())
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(gtest = EC_GROUP_dup(group))
|| !TEST_ptr(group_p = BN_new())
|| !TEST_ptr(group_a = BN_new())
|| !TEST_ptr(group_b = BN_new())
|| !TEST_ptr(group_cofactor = BN_new())
|| !TEST_ptr(group_gen = EC_GROUP_get0_generator(group))
|| !TEST_ptr(group_order = EC_GROUP_get0_order(group))
|| !TEST_true(EC_GROUP_get_cofactor(group, group_cofactor, NULL))
|| !TEST_true(EC_GROUP_get_curve(group, group_p, group_a, group_b, NULL))
|| !TEST_ptr(other_gen = EC_POINT_dup(group_gen, group))
|| !TEST_true(EC_POINT_add(group, other_gen, group_gen, group_gen, NULL))
|| !TEST_ptr(other_order = BN_dup(group_order))
|| !TEST_true(BN_add_word(other_order, 1))
|| !TEST_ptr(other_a = BN_dup(group_a))
|| !TEST_true(BN_add_word(other_a, 1))
|| !TEST_ptr(other_b = BN_dup(group_b))
|| !TEST_true(BN_add_word(other_b, 1))
|| !TEST_ptr(other_cofactor = BN_dup(group_cofactor))
|| !TEST_true(BN_add_word(other_cofactor, 1)))
goto err;
/* Determine if the built-in curve has a seed field set */
has_seed = (EC_GROUP_get_seed_len(group) > 0);
field_nid = EC_GROUP_get_field_type(group);
if (field_nid == NID_X9_62_characteristic_two_field) {
if (!TEST_ptr(other_p = BN_dup(group_p))
|| !TEST_true(BN_lshift1(other_p, other_p)))
goto err;
} else {
if (!TEST_ptr(other_p = BN_dup(group_p)))
goto err;
/*
* Just choosing any arbitrary prime does not work..
* Setting p via ec_GFp_nist_group_set_curve() needs the prime to be a
* nist prime. So only select one of these as an alternate prime.
*/
if (!TEST_ptr(BN_copy(other_p,
BN_ucmp(BN_get0_nist_prime_192(), other_p) == 0 ?
BN_get0_nist_prime_256() :
BN_get0_nist_prime_192())))
goto err;
}
/* Passes because this is a valid curve */
if (!TEST_int_eq(EC_GROUP_check_named_curve(group, 0, NULL), nid)
/* Only NIST curves pass */
|| !TEST_int_eq(EC_GROUP_check_named_curve(group, 1, NULL),
EC_curve_nid2nist(nid) != NULL ? nid : NID_undef))
goto err;
/* Fail if the curve name doesn't match the parameters */
EC_GROUP_set_curve_name(group, nid + 1);
ERR_set_mark();
if (!TEST_int_le(EC_GROUP_check_named_curve(group, 0, NULL), 0))
goto err;
ERR_pop_to_mark();
/* Restore curve name and ensure it's passing */
EC_GROUP_set_curve_name(group, nid);
if (!TEST_int_eq(EC_GROUP_check_named_curve(group, 0, NULL), nid))
goto err;
if (!TEST_int_eq(EC_GROUP_set_seed(group, invalid_seed, invalid_seed_len),
invalid_seed_len))
goto err;
if (has_seed) {
/*
* If the built-in curve has a seed and we set the seed to another value
* then it will fail the check.
*/
if (!TEST_int_eq(EC_GROUP_check_named_curve(group, 0, NULL), 0))
goto err;
} else {
/*
* If the built-in curve does not have a seed then setting the seed will
* pass the check (as the seed is optional).
*/
if (!TEST_int_eq(EC_GROUP_check_named_curve(group, 0, NULL), nid))
goto err;
}
/* Pass if the seed is unknown (as it is optional) */
if (!TEST_int_eq(EC_GROUP_set_seed(group, NULL, 0), 1)
|| !TEST_int_eq(EC_GROUP_check_named_curve(group, 0, NULL), nid))
goto err;
/* Check that a duped group passes */
if (!TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), nid))
goto err;
/* check that changing any generator parameter fails */
if (!TEST_true(EC_GROUP_set_generator(gtest, other_gen, group_order,
group_cofactor))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), 0)
|| !TEST_true(EC_GROUP_set_generator(gtest, group_gen, other_order,
group_cofactor))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), 0)
/* The order is not an optional field, so this should fail */
|| !TEST_false(EC_GROUP_set_generator(gtest, group_gen, NULL,
group_cofactor))
|| !TEST_true(EC_GROUP_set_generator(gtest, group_gen, group_order,
other_cofactor))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), 0)
/* Check that if the cofactor is not set then it still passes */
|| !TEST_true(EC_GROUP_set_generator(gtest, group_gen, group_order,
NULL))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), nid)
/* check that restoring the generator passes */
|| !TEST_true(EC_GROUP_set_generator(gtest, group_gen, group_order,
group_cofactor))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), nid))
goto err;
/*
* check that changing any curve parameter fails
*
* Setting arbitrary p, a or b might fail for some EC_GROUPs
* depending on the internal EC_METHOD implementation, hence run
* these tests conditionally to the success of EC_GROUP_set_curve().
*/
ERR_set_mark();
if (EC_GROUP_set_curve(gtest, other_p, group_a, group_b, NULL)) {
if (!TEST_int_le(EC_GROUP_check_named_curve(gtest, 0, NULL), 0))
goto err;
} else {
/* clear the error stack if EC_GROUP_set_curve() failed */
ERR_pop_to_mark();
ERR_set_mark();
}
if (EC_GROUP_set_curve(gtest, group_p, other_a, group_b, NULL)) {
if (!TEST_int_le(EC_GROUP_check_named_curve(gtest, 0, NULL), 0))
goto err;
} else {
/* clear the error stack if EC_GROUP_set_curve() failed */
ERR_pop_to_mark();
ERR_set_mark();
}
if (EC_GROUP_set_curve(gtest, group_p, group_a, other_b, NULL)) {
if (!TEST_int_le(EC_GROUP_check_named_curve(gtest, 0, NULL), 0))
goto err;
} else {
/* clear the error stack if EC_GROUP_set_curve() failed */
ERR_pop_to_mark();
ERR_set_mark();
}
ERR_pop_to_mark();
/* Check that restoring the curve parameters passes */
if (!TEST_true(EC_GROUP_set_curve(gtest, group_p, group_a, group_b, NULL))
|| !TEST_int_eq(EC_GROUP_check_named_curve(gtest, 0, NULL), nid))
goto err;
ret = 1;
err:
BN_free(group_p);
BN_free(other_p);
BN_free(group_a);
BN_free(other_a);
BN_free(group_b);
BN_free(other_b);
BN_free(group_cofactor);
BN_free(other_cofactor);
BN_free(other_order);
EC_POINT_free(other_gen);
EC_GROUP_free(gtest);
EC_GROUP_free(group);
BN_CTX_free(bn_ctx);
return ret;
}
/*
* This checks the lookup capability of EC_GROUP_check_named_curve()
* when the given group was created with explicit parameters.
*
* It is possible to retrieve an alternative alias that does not match
* the original nid in this case.
*/
static int check_named_curve_lookup_test(int id)
{
int ret = 0, nid, rv = 0;
EC_GROUP *g = NULL , *ga = NULL;
ECPARAMETERS *p = NULL, *pa = NULL;
BN_CTX *ctx = NULL;
/* Do some setup */
nid = curves[id].nid;
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(g = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(p = EC_GROUP_get_ecparameters(g, NULL)))
goto err;
/* replace with group from explicit parameters */
EC_GROUP_free(g);
if (!TEST_ptr(g = EC_GROUP_new_from_ecparameters(p)))
goto err;
if (!TEST_int_gt(rv = EC_GROUP_check_named_curve(g, 0, NULL), 0))
goto err;
if (rv != nid) {
/*
* Found an alias:
* fail if the returned nid is not an alias of the original group.
*
* The comparison here is done by comparing two explicit
* parameter EC_GROUPs with EC_GROUP_cmp(), to ensure the
* comparison happens with unnamed EC_GROUPs using the same
* EC_METHODs.
*/
if (!TEST_ptr(ga = EC_GROUP_new_by_curve_name(rv))
|| !TEST_ptr(pa = EC_GROUP_get_ecparameters(ga, NULL)))
goto err;
/* replace with group from explicit parameters, then compare */
EC_GROUP_free(ga);
if (!TEST_ptr(ga = EC_GROUP_new_from_ecparameters(pa))
|| !TEST_int_eq(EC_GROUP_cmp(g, ga, ctx), 0))
goto err;
}
ret = 1;
err:
EC_GROUP_free(g);
EC_GROUP_free(ga);
ECPARAMETERS_free(p);
ECPARAMETERS_free(pa);
BN_CTX_free(ctx);
return ret;
}
/*
* Sometime we cannot compare nids for equality, as the built-in curve table
* includes aliases with different names for the same curve.
*
* This function returns TRUE (1) if the checked nids are identical, or if they
* alias to the same curve. FALSE (0) otherwise.
*/
static ossl_inline
int are_ec_nids_compatible(int n1d, int n2d)
{
int ret = 0;
switch (n1d) {
#ifndef OPENSSL_NO_EC2M
case NID_sect113r1:
case NID_wap_wsg_idm_ecid_wtls4:
ret = (n2d == NID_sect113r1 || n2d == NID_wap_wsg_idm_ecid_wtls4);
break;
case NID_sect163k1:
case NID_wap_wsg_idm_ecid_wtls3:
ret = (n2d == NID_sect163k1 || n2d == NID_wap_wsg_idm_ecid_wtls3);
break;
case NID_sect233k1:
case NID_wap_wsg_idm_ecid_wtls10:
ret = (n2d == NID_sect233k1 || n2d == NID_wap_wsg_idm_ecid_wtls10);
break;
case NID_sect233r1:
case NID_wap_wsg_idm_ecid_wtls11:
ret = (n2d == NID_sect233r1 || n2d == NID_wap_wsg_idm_ecid_wtls11);
break;
case NID_X9_62_c2pnb163v1:
case NID_wap_wsg_idm_ecid_wtls5:
ret = (n2d == NID_X9_62_c2pnb163v1
|| n2d == NID_wap_wsg_idm_ecid_wtls5);
break;
#endif /* OPENSSL_NO_EC2M */
case NID_secp112r1:
case NID_wap_wsg_idm_ecid_wtls6:
ret = (n2d == NID_secp112r1 || n2d == NID_wap_wsg_idm_ecid_wtls6);
break;
case NID_secp160r2:
case NID_wap_wsg_idm_ecid_wtls7:
ret = (n2d == NID_secp160r2 || n2d == NID_wap_wsg_idm_ecid_wtls7);
break;
#ifdef OPENSSL_NO_EC_NISTP_64_GCC_128
case NID_secp224r1:
case NID_wap_wsg_idm_ecid_wtls12:
ret = (n2d == NID_secp224r1 || n2d == NID_wap_wsg_idm_ecid_wtls12);
break;
#else
/*
* For SEC P-224 we want to ensure that the SECP nid is returned, as
* that is associated with a specialized method.
*/
case NID_wap_wsg_idm_ecid_wtls12:
ret = (n2d == NID_secp224r1);
break;
#endif /* def(OPENSSL_NO_EC_NISTP_64_GCC_128) */
default:
ret = (n1d == n2d);
}
return ret;
}
/*
* This checks that EC_GROUP_bew_from_ecparameters() returns a "named"
* EC_GROUP for built-in curves.
*
* Note that it is possible to retrieve an alternative alias that does not match
* the original nid.
*
* Ensure that the OPENSSL_EC_EXPLICIT_CURVE ASN1 flag is set.
*/
static int check_named_curve_from_ecparameters(int id)
{
int ret = 0, nid, tnid;
EC_GROUP *group = NULL, *tgroup = NULL, *tmpg = NULL;
const EC_POINT *group_gen = NULL;
EC_POINT *other_gen = NULL;
BIGNUM *group_cofactor = NULL, *other_cofactor = NULL;
BIGNUM *other_gen_x = NULL, *other_gen_y = NULL;
const BIGNUM *group_order = NULL;
BIGNUM *other_order = NULL;
BN_CTX *bn_ctx = NULL;
static const unsigned char invalid_seed[] = "THIS IS NOT A VALID SEED";
static size_t invalid_seed_len = sizeof(invalid_seed);
ECPARAMETERS *params = NULL, *other_params = NULL;
EC_GROUP *g_ary[8] = {NULL};
EC_GROUP **g_next = &g_ary[0];
ECPARAMETERS *p_ary[8] = {NULL};
ECPARAMETERS **p_next = &p_ary[0];
/* Do some setup */
nid = curves[id].nid;
TEST_note("Curve %s", OBJ_nid2sn(nid));
if (!TEST_ptr(bn_ctx = BN_CTX_new()))
return ret;
BN_CTX_start(bn_ctx);
if (/* Allocations */
!TEST_ptr(group_cofactor = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_gen_x = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_gen_y = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_order = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_cofactor = BN_CTX_get(bn_ctx))
/* Generate reference group and params */
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(params = EC_GROUP_get_ecparameters(group, NULL))
|| !TEST_ptr(group_gen = EC_GROUP_get0_generator(group))
|| !TEST_ptr(group_order = EC_GROUP_get0_order(group))
|| !TEST_true(EC_GROUP_get_cofactor(group, group_cofactor, NULL))
/* compute `other_*` values */
|| !TEST_ptr(tmpg = EC_GROUP_dup(group))
|| !TEST_ptr(other_gen = EC_POINT_dup(group_gen, group))
|| !TEST_true(EC_POINT_add(group, other_gen, group_gen, group_gen, NULL))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, other_gen,
other_gen_x, other_gen_y, bn_ctx))
|| !TEST_true(BN_copy(other_order, group_order))
|| !TEST_true(BN_add_word(other_order, 1))
|| !TEST_true(BN_copy(other_cofactor, group_cofactor))
|| !TEST_true(BN_add_word(other_cofactor, 1)))
goto err;
EC_POINT_free(other_gen);
other_gen = NULL;
if (!TEST_ptr(other_gen = EC_POINT_new(tmpg))
|| !TEST_true(EC_POINT_set_affine_coordinates(tmpg, other_gen,
other_gen_x, other_gen_y,
bn_ctx)))
goto err;
/*
* ###########################
* # Actual tests start here #
* ###########################
*/
/*
* Creating a group from built-in explicit parameters returns a
* "named" EC_GROUP
*/
if (!TEST_ptr(tgroup = *g_next++ = EC_GROUP_new_from_ecparameters(params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef))
goto err;
/*
* We cannot always guarantee the names match, as the built-in table
* contains aliases for the same curve with different names.
*/
if (!TEST_true(are_ec_nids_compatible(nid, tnid))) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/* Ensure that the OPENSSL_EC_EXPLICIT_CURVE ASN1 flag is set. */
if (!TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup), OPENSSL_EC_EXPLICIT_CURVE))
goto err;
/*
* An invalid seed in the parameters should be ignored: expect a "named"
* group.
*/
if (!TEST_int_eq(EC_GROUP_set_seed(tmpg, invalid_seed, invalid_seed_len),
invalid_seed_len)
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/*
* A null seed in the parameters should be ignored, as it is optional:
* expect a "named" group.
*/
if (!TEST_int_eq(EC_GROUP_set_seed(tmpg, NULL, 0), 1)
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/*
* Check that changing any of the generator parameters does not yield a
* match with the built-in curves
*/
if (/* Other gen, same group order & cofactor */
!TEST_true(EC_GROUP_set_generator(tmpg, other_gen, group_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_eq((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
/* Same gen & cofactor, different order */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, other_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_eq((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
/* The order is not an optional field, so this should fail */
|| !TEST_false(EC_GROUP_set_generator(tmpg, group_gen, NULL,
group_cofactor))
/* Check that a wrong cofactor is ignored, and we still match */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
other_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)
/* Check that if the cofactor is not set then it still matches */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
NULL))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)
/* check that restoring the generator passes */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE))
goto err;
ret = 1;
err:
for (g_next = &g_ary[0]; g_next < g_ary + OSSL_NELEM(g_ary); g_next++)
EC_GROUP_free(*g_next);
for (p_next = &p_ary[0]; p_next < p_ary + OSSL_NELEM(g_ary); p_next++)
ECPARAMETERS_free(*p_next);
ECPARAMETERS_free(params);
EC_POINT_free(other_gen);
EC_GROUP_free(tmpg);
EC_GROUP_free(group);
BN_CTX_end(bn_ctx);
BN_CTX_free(bn_ctx);
return ret;
}
static int parameter_test(void)
{
EC_GROUP *group = NULL, *group2 = NULL;
ECPARAMETERS *ecparameters = NULL;
unsigned char *buf = NULL;
int r = 0, len;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(NID_secp384r1))
|| !TEST_ptr(ecparameters = EC_GROUP_get_ecparameters(group, NULL))
|| !TEST_ptr(group2 = EC_GROUP_new_from_ecparameters(ecparameters))
|| !TEST_int_eq(EC_GROUP_cmp(group, group2, NULL), 0))
goto err;
EC_GROUP_free(group);
group = NULL;
/* Test the named curve encoding, which should be default. */
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(NID_secp521r1))
|| !TEST_true((len = i2d_ECPKParameters(group, &buf)) >= 0)
|| !TEST_mem_eq(buf, len, p521_named, sizeof(p521_named)))
goto err;
OPENSSL_free(buf);
buf = NULL;
/*
* Test the explicit encoding. P-521 requires correctly zero-padding the
* curve coefficients.
*/
EC_GROUP_set_asn1_flag(group, OPENSSL_EC_EXPLICIT_CURVE);
if (!TEST_true((len = i2d_ECPKParameters(group, &buf)) >= 0)
|| !TEST_mem_eq(buf, len, p521_explicit, sizeof(p521_explicit)))
goto err;
r = 1;
err:
EC_GROUP_free(group);
EC_GROUP_free(group2);
ECPARAMETERS_free(ecparameters);
OPENSSL_free(buf);
return r;
}
/*-
* random 256-bit explicit parameters curve, cofactor absent
* order: 0x0c38d96a9f892b88772ec2e39614a82f4f (132 bit)
* cofactor: 0x12bc94785251297abfafddf1565100da (125 bit)
*/
static const unsigned char params_cf_pass[] = {
0x30, 0x81, 0xcd, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86,
0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xe5, 0x00, 0x1f, 0xc5,
0xca, 0x71, 0x9d, 0x8e, 0xf7, 0x07, 0x4b, 0x48, 0x37, 0xf9, 0x33, 0x2d,
0x71, 0xbf, 0x79, 0xe7, 0xdc, 0x91, 0xc2, 0xff, 0xb6, 0x7b, 0xc3, 0x93,
0x44, 0x88, 0xe6, 0x91, 0x30, 0x44, 0x04, 0x20, 0xe5, 0x00, 0x1f, 0xc5,
0xca, 0x71, 0x9d, 0x8e, 0xf7, 0x07, 0x4b, 0x48, 0x37, 0xf9, 0x33, 0x2d,
0x71, 0xbf, 0x79, 0xe7, 0xdc, 0x91, 0xc2, 0xff, 0xb6, 0x7b, 0xc3, 0x93,
0x44, 0x88, 0xe6, 0x8e, 0x04, 0x20, 0x18, 0x8c, 0x59, 0x57, 0xc4, 0xbc,
0x85, 0x57, 0xc3, 0x66, 0x9f, 0x89, 0xd5, 0x92, 0x0d, 0x7e, 0x42, 0x27,
0x07, 0x64, 0xaa, 0x26, 0xed, 0x89, 0xc4, 0x09, 0x05, 0x4d, 0xc7, 0x23,
0x47, 0xda, 0x04, 0x41, 0x04, 0x1b, 0x6b, 0x41, 0x0b, 0xf9, 0xfb, 0x77,
0xfd, 0x50, 0xb7, 0x3e, 0x23, 0xa3, 0xec, 0x9a, 0x3b, 0x09, 0x31, 0x6b,
0xfa, 0xf6, 0xce, 0x1f, 0xff, 0xeb, 0x57, 0x93, 0x24, 0x70, 0xf3, 0xf4,
0xba, 0x7e, 0xfa, 0x86, 0x6e, 0x19, 0x89, 0xe3, 0x55, 0x6d, 0x5a, 0xe9,
0xc0, 0x3d, 0xbc, 0xfb, 0xaf, 0xad, 0xd4, 0x7e, 0xa6, 0xe5, 0xfa, 0x1a,
0x58, 0x07, 0x9e, 0x8f, 0x0d, 0x3b, 0xf7, 0x38, 0xca, 0x02, 0x11, 0x0c,
0x38, 0xd9, 0x6a, 0x9f, 0x89, 0x2b, 0x88, 0x77, 0x2e, 0xc2, 0xe3, 0x96,
0x14, 0xa8, 0x2f, 0x4f
};
/*-
* random 256-bit explicit parameters curve, cofactor absent
* order: 0x045a75c0c17228ebd9b169a10e34a22101 (131 bit)
* cofactor: 0x2e134b4ede82649f67a2e559d361e5fe (126 bit)
*/
static const unsigned char params_cf_fail[] = {
0x30, 0x81, 0xcd, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86,
0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xc8, 0x95, 0x27, 0x37,
0xe8, 0xe1, 0xfd, 0xcc, 0xf9, 0x6e, 0x0c, 0xa6, 0x21, 0xc1, 0x7d, 0x6b,
0x9d, 0x44, 0x42, 0xea, 0x73, 0x4e, 0x04, 0xb6, 0xac, 0x62, 0x50, 0xd0,
0x33, 0xc2, 0xea, 0x13, 0x30, 0x44, 0x04, 0x20, 0xc8, 0x95, 0x27, 0x37,
0xe8, 0xe1, 0xfd, 0xcc, 0xf9, 0x6e, 0x0c, 0xa6, 0x21, 0xc1, 0x7d, 0x6b,
0x9d, 0x44, 0x42, 0xea, 0x73, 0x4e, 0x04, 0xb6, 0xac, 0x62, 0x50, 0xd0,
0x33, 0xc2, 0xea, 0x10, 0x04, 0x20, 0xbf, 0xa6, 0xa8, 0x05, 0x1d, 0x09,
0xac, 0x70, 0x39, 0xbb, 0x4d, 0xb2, 0x90, 0x8a, 0x15, 0x41, 0x14, 0x1d,
0x11, 0x86, 0x9f, 0x13, 0xa2, 0x63, 0x1a, 0xda, 0x95, 0x22, 0x4d, 0x02,
0x15, 0x0a, 0x04, 0x41, 0x04, 0xaf, 0x16, 0x71, 0xf9, 0xc4, 0xc8, 0x59,
0x1d, 0xa3, 0x6f, 0xe7, 0xc3, 0x57, 0xa1, 0xfa, 0x9f, 0x49, 0x7c, 0x11,
0x27, 0x05, 0xa0, 0x7f, 0xff, 0xf9, 0xe0, 0xe7, 0x92, 0xdd, 0x9c, 0x24,
0x8e, 0xc7, 0xb9, 0x52, 0x71, 0x3f, 0xbc, 0x7f, 0x6a, 0x9f, 0x35, 0x70,
0xe1, 0x27, 0xd5, 0x35, 0x8a, 0x13, 0xfa, 0xa8, 0x33, 0x3e, 0xd4, 0x73,
0x1c, 0x14, 0x58, 0x9e, 0xc7, 0x0a, 0x87, 0x65, 0x8d, 0x02, 0x11, 0x04,
0x5a, 0x75, 0xc0, 0xc1, 0x72, 0x28, 0xeb, 0xd9, 0xb1, 0x69, 0xa1, 0x0e,
0x34, 0xa2, 0x21, 0x01
};
/*-
* Test two random 256-bit explicit parameters curves with absent cofactor.
* The two curves are chosen to roughly straddle the bounds at which the lib
* can compute the cofactor automatically, roughly 4*sqrt(p). So test that:
*
* - params_cf_pass: order is sufficiently close to p to compute cofactor
* - params_cf_fail: order is too far away from p to compute cofactor
*
* For standards-compliant curves, cofactor is chosen as small as possible.
* So you can see neither of these curves are fit for cryptographic use.
*
* Some standards even mandate an upper bound on the cofactor, e.g. SECG1 v2:
* h <= 2**(t/8) where t is the security level of the curve, for which the lib
* will always succeed in computing the cofactor. Neither of these curves
* conform to that -- this is just robustness testing.
*/
static int cofactor_range_test(void)
{
EC_GROUP *group = NULL;
BIGNUM *cf = NULL;
int ret = 0;
const unsigned char *b1 = (const unsigned char *)params_cf_fail;
const unsigned char *b2 = (const unsigned char *)params_cf_pass;
if (!TEST_ptr(group = d2i_ECPKParameters(NULL, &b1, sizeof(params_cf_fail)))
|| !TEST_BN_eq_zero(EC_GROUP_get0_cofactor(group))
|| !TEST_ptr(group = d2i_ECPKParameters(&group, &b2,
sizeof(params_cf_pass)))
|| !TEST_int_gt(BN_hex2bn(&cf, "12bc94785251297abfafddf1565100da"), 0)
|| !TEST_BN_eq(cf, EC_GROUP_get0_cofactor(group)))
goto err;
ret = 1;
err:
BN_free(cf);
EC_GROUP_free(group);
return ret;
}
/*-
* For named curves, test that:
* - the lib correctly computes the cofactor if passed a NULL or zero cofactor
* - a nonsensical cofactor throws an error (negative test)
* - nonsensical orders throw errors (negative tests)
*/
static int cardinality_test(int n)
{
int ret = 0, is_binary = 0;
int nid = curves[n].nid;
BN_CTX *ctx = NULL;
EC_GROUP *g1 = NULL, *g2 = NULL;
EC_POINT *g2_gen = NULL;
BIGNUM *g1_p = NULL, *g1_a = NULL, *g1_b = NULL, *g1_x = NULL, *g1_y = NULL,
*g1_order = NULL, *g1_cf = NULL, *g2_cf = NULL;
TEST_info("Curve %s cardinality test", OBJ_nid2sn(nid));
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(g1 = EC_GROUP_new_by_curve_name(nid))) {
BN_CTX_free(ctx);
return 0;
}
is_binary = (EC_GROUP_get_field_type(g1) == NID_X9_62_characteristic_two_field);
BN_CTX_start(ctx);
g1_p = BN_CTX_get(ctx);
g1_a = BN_CTX_get(ctx);
g1_b = BN_CTX_get(ctx);
g1_x = BN_CTX_get(ctx);
g1_y = BN_CTX_get(ctx);
g1_order = BN_CTX_get(ctx);
g1_cf = BN_CTX_get(ctx);
if (!TEST_ptr(g2_cf = BN_CTX_get(ctx))
/* pull out the explicit curve parameters */
|| !TEST_true(EC_GROUP_get_curve(g1, g1_p, g1_a, g1_b, ctx))
|| !TEST_true(EC_POINT_get_affine_coordinates(g1,
EC_GROUP_get0_generator(g1), g1_x, g1_y, ctx))
|| !TEST_true(BN_copy(g1_order, EC_GROUP_get0_order(g1)))
|| !TEST_true(EC_GROUP_get_cofactor(g1, g1_cf, ctx))
/* construct g2 manually with g1 parameters */
#ifndef OPENSSL_NO_EC2M
|| !TEST_ptr(g2 = (is_binary) ?
EC_GROUP_new_curve_GF2m(g1_p, g1_a, g1_b, ctx) :
EC_GROUP_new_curve_GFp(g1_p, g1_a, g1_b, ctx))
#else
|| !TEST_int_eq(0, is_binary)
|| !TEST_ptr(g2 = EC_GROUP_new_curve_GFp(g1_p, g1_a, g1_b, ctx))
#endif
|| !TEST_ptr(g2_gen = EC_POINT_new(g2))
|| !TEST_true(EC_POINT_set_affine_coordinates(g2, g2_gen, g1_x, g1_y, ctx))
/* pass NULL cofactor: lib should compute it */
|| !TEST_true(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
|| !TEST_true(EC_GROUP_get_cofactor(g2, g2_cf, ctx))
|| !TEST_BN_eq(g1_cf, g2_cf)
/* pass zero cofactor: lib should compute it */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(EC_GROUP_set_generator(g2, g2_gen, g1_order, g2_cf))
|| !TEST_true(EC_GROUP_get_cofactor(g2, g2_cf, ctx))
|| !TEST_BN_eq(g1_cf, g2_cf)
/* negative test for invalid cofactor */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(BN_sub(g2_cf, g2_cf, BN_value_one()))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, g2_cf))
/* negative test for NULL order */
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, NULL, NULL))
/* negative test for zero order */
|| !TEST_true(BN_set_word(g1_order, 0))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
/* negative test for negative order */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(BN_sub(g2_cf, g2_cf, BN_value_one()))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
/* negative test for too large order */
|| !TEST_true(BN_lshift(g1_order, g1_p, 2))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL)))
goto err;
ret = 1;
err:
EC_POINT_free(g2_gen);
EC_GROUP_free(g1);
EC_GROUP_free(g2);
BN_CTX_end(ctx);
BN_CTX_free(ctx);
return ret;
}
static int check_ec_key_field_public_range_test(int id)
{
int ret = 0, type = 0;
const EC_POINT *pub = NULL;
const EC_GROUP *group = NULL;
const BIGNUM *field = NULL;
BIGNUM *x = NULL, *y = NULL;
EC_KEY *key = NULL;
if (!TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(key = EC_KEY_new_by_curve_name(curves[id].nid))
|| !TEST_ptr(group = EC_KEY_get0_group(key))
|| !TEST_ptr(field = EC_GROUP_get0_field(group))
|| !TEST_int_gt(EC_KEY_generate_key(key), 0)
|| !TEST_int_gt(EC_KEY_check_key(key), 0)
|| !TEST_ptr(pub = EC_KEY_get0_public_key(key))
|| !TEST_int_gt(EC_POINT_get_affine_coordinates(group, pub, x, y,
NULL), 0))
goto err;
/*
* Make the public point out of range by adding the field (which will still
* be the same point on the curve). The add is different for char2 fields.
*/
type = EC_GROUP_get_field_type(group);
#ifndef OPENSSL_NO_EC2M
if (type == NID_X9_62_characteristic_two_field) {
/* test for binary curves */
if (!TEST_true(BN_GF2m_add(x, x, field)))
goto err;
} else
#endif
if (type == NID_X9_62_prime_field) {
/* test for prime curves */
if (!TEST_true(BN_add(x, x, field)))
goto err;
} else {
/* this should never happen */
TEST_error("Unsupported EC_METHOD field_type");
goto err;
}
if (!TEST_int_le(EC_KEY_set_public_key_affine_coordinates(key, x, y), 0))
goto err;
ret = 1;
err:
BN_free(x);
BN_free(y);
EC_KEY_free(key);
return ret;
}
/*
* Helper for ec_point_hex2point_test
*
* Self-tests EC_POINT_point2hex() against EC_POINT_hex2point() for the given
* (group,P) pair.
*
* If P is NULL use point at infinity.
*/
static ossl_inline
int ec_point_hex2point_test_helper(const EC_GROUP *group, const EC_POINT *P,
point_conversion_form_t form,
BN_CTX *bnctx)
{
int ret = 0;
EC_POINT *Q = NULL, *Pinf = NULL;
char *hex = NULL;
if (P == NULL) {
/* If P is NULL use point at infinity. */
if (!TEST_ptr(Pinf = EC_POINT_new(group))
|| !TEST_true(EC_POINT_set_to_infinity(group, Pinf)))
goto err;
P = Pinf;
}
if (!TEST_ptr(hex = EC_POINT_point2hex(group, P, form, bnctx))
|| !TEST_ptr(Q = EC_POINT_hex2point(group, hex, NULL, bnctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, bnctx)))
goto err;
/*
* The next check is most likely superfluous, as EC_POINT_cmp should already
* cover this.
* Nonetheless it increases the test coverage for EC_POINT_is_at_infinity,
* so we include it anyway!
*/
if (Pinf != NULL
&& !TEST_true(EC_POINT_is_at_infinity(group, Q)))
goto err;
ret = 1;
err:
EC_POINT_free(Pinf);
OPENSSL_free(hex);
EC_POINT_free(Q);
return ret;
}
/*
* This test self-validates EC_POINT_hex2point() and EC_POINT_point2hex()
*/
static int ec_point_hex2point_test(int id)
{
int ret = 0, nid;
EC_GROUP *group = NULL;
const EC_POINT *G = NULL;
EC_POINT *P = NULL;
BN_CTX * bnctx = NULL;
/* Do some setup */
nid = curves[id].nid;
if (!TEST_ptr(bnctx = BN_CTX_new())
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(G = EC_GROUP_get0_generator(group))
|| !TEST_ptr(P = EC_POINT_dup(G, group)))
goto err;
if (!TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_COMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_COMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_UNCOMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_UNCOMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_HYBRID,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_HYBRID,
bnctx)))
goto err;
ret = 1;
err:
EC_POINT_free(P);
EC_GROUP_free(group);
BN_CTX_free(bnctx);
return ret;
}
static int do_test_custom_explicit_fromdata(EC_GROUP *group, BN_CTX *ctx,
unsigned char *gen, int gen_size)
{
int ret = 0, i_out;
EVP_PKEY_CTX *pctx = NULL;
EVP_PKEY *pkeyparam = NULL;
OSSL_PARAM_BLD *bld = NULL;
const char *field_name;
OSSL_PARAM *params = NULL;
const OSSL_PARAM *gettable;
BIGNUM *p, *a, *b;
BIGNUM *p_out = NULL, *a_out = NULL, *b_out = NULL;
BIGNUM *order_out = NULL, *cofactor_out = NULL;
char name[80];
unsigned char buf[1024];
size_t buf_len, name_len;
#ifndef OPENSSL_NO_EC2M
unsigned int k1 = 0, k2 = 0, k3 = 0;
const char *basis_name = NULL;
#endif
p = BN_CTX_get(ctx);
a = BN_CTX_get(ctx);
b = BN_CTX_get(ctx);
if (!TEST_ptr(b)
|| !TEST_ptr(bld = OSSL_PARAM_BLD_new()))
goto err;
if (EC_GROUP_get_field_type(group) == NID_X9_62_prime_field) {
field_name = SN_X9_62_prime_field;
} else {
field_name = SN_X9_62_characteristic_two_field;
#ifndef OPENSSL_NO_EC2M
if (EC_GROUP_get_basis_type(group) == NID_X9_62_tpBasis) {
basis_name = SN_X9_62_tpBasis;
if (!TEST_true(EC_GROUP_get_trinomial_basis(group, &k1)))
goto err;
} else {
basis_name = SN_X9_62_ppBasis;
if (!TEST_true(EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3)))
goto err;
}
#endif /* OPENSSL_NO_EC2M */
}
if (!TEST_true(EC_GROUP_get_curve(group, p, a, b, ctx))
|| !TEST_true(OSSL_PARAM_BLD_push_utf8_string(bld,
OSSL_PKEY_PARAM_EC_FIELD_TYPE, field_name, 0))
|| !TEST_true(OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_EC_P, p))
|| !TEST_true(OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_EC_A, a))
|| !TEST_true(OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_EC_B, b)))
goto err;
if (EC_GROUP_get0_seed(group) != NULL) {
if (!TEST_true(OSSL_PARAM_BLD_push_octet_string(bld,
OSSL_PKEY_PARAM_EC_SEED, EC_GROUP_get0_seed(group),
EC_GROUP_get_seed_len(group))))
goto err;
}
if (EC_GROUP_get0_cofactor(group) != NULL) {
if (!TEST_true(OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_EC_COFACTOR,
EC_GROUP_get0_cofactor(group))))
goto err;
}
if (!TEST_true(OSSL_PARAM_BLD_push_octet_string(bld,
OSSL_PKEY_PARAM_EC_GENERATOR, gen, gen_size))
|| !TEST_true(OSSL_PARAM_BLD_push_BN(bld, OSSL_PKEY_PARAM_EC_ORDER,
EC_GROUP_get0_order(group))))
goto err;
if (!TEST_ptr(params = OSSL_PARAM_BLD_to_param(bld))
|| !TEST_ptr(pctx = EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL))
|| !TEST_int_gt(EVP_PKEY_fromdata_init(pctx), 0)
|| !TEST_int_gt(EVP_PKEY_fromdata(pctx, &pkeyparam,
EVP_PKEY_KEY_PARAMETERS, params), 0))
goto err;
/*- Check that all the set values are retrievable -*/
/* There should be no match to a group name since the generator changed */
if (!TEST_false(EVP_PKEY_get_utf8_string_param(pkeyparam,
OSSL_PKEY_PARAM_GROUP_NAME, name, sizeof(name),
&name_len)))
goto err;
/* The encoding should be explicit as it has no group */
if (!TEST_true(EVP_PKEY_get_utf8_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_ENCODING,
name, sizeof(name), &name_len))
|| !TEST_str_eq(name, OSSL_PKEY_EC_ENCODING_EXPLICIT))
goto err;
if (!TEST_true(EVP_PKEY_get_utf8_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_FIELD_TYPE, name, sizeof(name),
&name_len))
|| !TEST_str_eq(name, field_name))
goto err;
if (!TEST_true(EVP_PKEY_get_octet_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_GENERATOR, buf, sizeof(buf), &buf_len))
|| !TEST_mem_eq(buf, (int)buf_len, gen, gen_size))
goto err;
if (!TEST_true(EVP_PKEY_get_bn_param(pkeyparam, OSSL_PKEY_PARAM_EC_P, &p_out))
|| !TEST_BN_eq(p_out, p)
|| !TEST_true(EVP_PKEY_get_bn_param(pkeyparam, OSSL_PKEY_PARAM_EC_A,
&a_out))
|| !TEST_BN_eq(a_out, a)
|| !TEST_true(EVP_PKEY_get_bn_param(pkeyparam, OSSL_PKEY_PARAM_EC_B,
&b_out))
|| !TEST_BN_eq(b_out, b)
|| !TEST_true(EVP_PKEY_get_bn_param(pkeyparam, OSSL_PKEY_PARAM_EC_ORDER,
&order_out))
|| !TEST_BN_eq(order_out, EC_GROUP_get0_order(group)))
goto err;
if (EC_GROUP_get0_cofactor(group) != NULL) {
if (!TEST_true(EVP_PKEY_get_bn_param(pkeyparam,
OSSL_PKEY_PARAM_EC_COFACTOR, &cofactor_out))
|| !TEST_BN_eq(cofactor_out, EC_GROUP_get0_cofactor(group)))
goto err;
}
if (EC_GROUP_get0_seed(group) != NULL) {
if (!TEST_true(EVP_PKEY_get_octet_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_SEED, buf, sizeof(buf), &buf_len))
|| !TEST_mem_eq(buf, buf_len, EC_GROUP_get0_seed(group),
EC_GROUP_get_seed_len(group)))
goto err;
}
if (EC_GROUP_get_field_type(group) == NID_X9_62_prime_field) {
/* No extra fields should be set for a prime field */
if (!TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_M, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_TP_BASIS, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K1, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K2, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K3, &i_out))
|| !TEST_false(EVP_PKEY_get_utf8_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_TYPE, name, sizeof(name),
&name_len)))
goto err;
} else {
#ifndef OPENSSL_NO_EC2M
if (!TEST_true(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_M, &i_out))
|| !TEST_int_eq(EC_GROUP_get_degree(group), i_out)
|| !TEST_true(EVP_PKEY_get_utf8_string_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_TYPE, name, sizeof(name),
&name_len))
|| !TEST_str_eq(name, basis_name))
goto err;
if (EC_GROUP_get_basis_type(group) == NID_X9_62_tpBasis) {
if (!TEST_true(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_TP_BASIS, &i_out))
|| !TEST_int_eq(k1, i_out)
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K1, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K2, &i_out))
|| !TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K3, &i_out)))
goto err;
} else {
if (!TEST_false(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_TP_BASIS, &i_out))
|| !TEST_true(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K1, &i_out))
|| !TEST_int_eq(k1, i_out)
|| !TEST_true(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K2, &i_out))
|| !TEST_int_eq(k2, i_out)
|| !TEST_true(EVP_PKEY_get_int_param(pkeyparam,
OSSL_PKEY_PARAM_EC_CHAR2_PP_K3, &i_out))
|| !TEST_int_eq(k3, i_out))
goto err;
}
#endif /* OPENSSL_NO_EC2M */
}
if (!TEST_ptr(gettable = EVP_PKEY_gettable_params(pkeyparam))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_GROUP_NAME))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_ENCODING))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_FIELD_TYPE))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_P))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_A))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_B))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_GENERATOR))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_ORDER))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_COFACTOR))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_SEED))
#ifndef OPENSSL_NO_EC2M
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_M))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_TYPE))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_TP_BASIS))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_PP_K1))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_PP_K2))
|| !TEST_ptr(OSSL_PARAM_locate_const(gettable, OSSL_PKEY_PARAM_EC_CHAR2_PP_K3))
#endif
)
goto err;
ret = 1;
err:
BN_free(order_out);
BN_free(cofactor_out);
BN_free(a_out);
BN_free(b_out);
BN_free(p_out);
OSSL_PARAM_free(params);
OSSL_PARAM_BLD_free(bld);
EVP_PKEY_free(pkeyparam);
EVP_PKEY_CTX_free(pctx);
return ret;
}
/*
* check the EC_METHOD respects the supplied EC_GROUP_set_generator G
*/
static int custom_generator_test(int id)
{
int ret = 0, nid, bsize;
EC_GROUP *group = NULL;
EC_POINT *G2 = NULL, *Q1 = NULL, *Q2 = NULL;
BN_CTX *ctx = NULL;
BIGNUM *k = NULL;
unsigned char *b1 = NULL, *b2 = NULL;
/* Do some setup */
nid = curves[id].nid;
TEST_note("Curve %s", OBJ_nid2sn(nid));
if (!TEST_ptr(ctx = BN_CTX_new()))
return 0;
BN_CTX_start(ctx);
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid)))
goto err;
/* expected byte length of encoded points */
bsize = (EC_GROUP_get_degree(group) + 7) / 8;
bsize = 1 + 2 * bsize; /* UNCOMPRESSED_POINT format */
if (!TEST_ptr(k = BN_CTX_get(ctx))
/* fetch a testing scalar k != 0,1 */
|| !TEST_true(BN_rand(k, EC_GROUP_order_bits(group) - 1,
BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY))
/* make k even */
|| !TEST_true(BN_clear_bit(k, 0))
|| !TEST_ptr(G2 = EC_POINT_new(group))
|| !TEST_ptr(Q1 = EC_POINT_new(group))
/* Q1 := kG */
|| !TEST_true(EC_POINT_mul(group, Q1, k, NULL, NULL, ctx))
/* pull out the bytes of that */
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED, NULL,
0, ctx), bsize)
|| !TEST_ptr(b1 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED, b1,
bsize, ctx), bsize)
/* new generator is G2 := 2G */
|| !TEST_true(EC_POINT_dbl(group, G2, EC_GROUP_get0_generator(group),
ctx))
|| !TEST_true(EC_GROUP_set_generator(group, G2,
EC_GROUP_get0_order(group),
EC_GROUP_get0_cofactor(group)))
|| !TEST_ptr(Q2 = EC_POINT_new(group))
|| !TEST_true(BN_rshift1(k, k))
/* Q2 := k/2 G2 */
|| !TEST_true(EC_POINT_mul(group, Q2, k, NULL, NULL, ctx))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q2,
POINT_CONVERSION_UNCOMPRESSED, NULL,
0, ctx), bsize)
|| !TEST_ptr(b2 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q2,
POINT_CONVERSION_UNCOMPRESSED, b2,
bsize, ctx), bsize)
/* Q1 = kG = k/2 G2 = Q2 should hold */
|| !TEST_mem_eq(b1, bsize, b2, bsize))
goto err;
if (!do_test_custom_explicit_fromdata(group, ctx, b1, bsize))
goto err;
ret = 1;
err:
EC_POINT_free(Q1);
EC_POINT_free(Q2);
EC_POINT_free(G2);
EC_GROUP_free(group);
BN_CTX_end(ctx);
BN_CTX_free(ctx);
OPENSSL_free(b1);
OPENSSL_free(b2);
return ret;
}
/*
* check creation of curves from explicit params through the public API
*/
static int custom_params_test(int id)
{
int ret = 0, nid, bsize;
const char *curve_name = NULL;
EC_GROUP *group = NULL, *altgroup = NULL;
EC_POINT *G2 = NULL, *Q1 = NULL, *Q2 = NULL;
const EC_POINT *Q = NULL;
BN_CTX *ctx = NULL;
BIGNUM *k = NULL;
unsigned char *buf1 = NULL, *buf2 = NULL;
const BIGNUM *z = NULL, *cof = NULL, *priv1 = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL;
int is_prime = 0;
EC_KEY *eckey1 = NULL, *eckey2 = NULL;
EVP_PKEY *pkey1 = NULL, *pkey2 = NULL;
EVP_PKEY_CTX *pctx1 = NULL, *pctx2 = NULL;
size_t sslen, t;
unsigned char *pub1 = NULL , *pub2 = NULL;
OSSL_PARAM_BLD *param_bld = NULL;
OSSL_PARAM *params1 = NULL, *params2 = NULL;
/* Do some setup */
nid = curves[id].nid;
curve_name = OBJ_nid2sn(nid);
TEST_note("Curve %s", curve_name);
if (nid == NID_sm2)
return TEST_skip("custom params not supported with SM2");
if (!TEST_ptr(ctx = BN_CTX_new()))
return 0;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid)))
goto err;
is_prime = EC_GROUP_get_field_type(group) == NID_X9_62_prime_field;
#ifdef OPENSSL_NO_EC2M
if (!is_prime) {
ret = TEST_skip("binary curves not supported in this build");
goto err;
}
#endif
BN_CTX_start(ctx);
if (!TEST_ptr(p = BN_CTX_get(ctx))
|| !TEST_ptr(a = BN_CTX_get(ctx))
|| !TEST_ptr(b = BN_CTX_get(ctx))
|| !TEST_ptr(k = BN_CTX_get(ctx)))
goto err;
/* expected byte length of encoded points */
bsize = (EC_GROUP_get_degree(group) + 7) / 8;
bsize = 1 + 2 * bsize; /* UNCOMPRESSED_POINT format */
/* extract parameters from built-in curve */
if (!TEST_true(EC_GROUP_get_curve(group, p, a, b, ctx))
|| !TEST_ptr(G2 = EC_POINT_new(group))
/* new generator is G2 := 2G */
|| !TEST_true(EC_POINT_dbl(group, G2,
EC_GROUP_get0_generator(group), ctx))
/* pull out the bytes of that */
|| !TEST_int_eq(EC_POINT_point2oct(group, G2,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, ctx), bsize)
|| !TEST_ptr(buf1 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, G2,
POINT_CONVERSION_UNCOMPRESSED,
buf1, bsize, ctx), bsize)
|| !TEST_ptr(z = EC_GROUP_get0_order(group))
|| !TEST_ptr(cof = EC_GROUP_get0_cofactor(group))
)
goto err;
/* create a new group using same params (but different generator) */
if (is_prime) {
if (!TEST_ptr(altgroup = EC_GROUP_new_curve_GFp(p, a, b, ctx)))
goto err;
}
#ifndef OPENSSL_NO_EC2M
else {
if (!TEST_ptr(altgroup = EC_GROUP_new_curve_GF2m(p, a, b, ctx)))
goto err;
}
#endif
/* set 2*G as the generator of altgroup */
EC_POINT_free(G2); /* discard G2 as it refers to the original group */
if (!TEST_ptr(G2 = EC_POINT_new(altgroup))
|| !TEST_true(EC_POINT_oct2point(altgroup, G2, buf1, bsize, ctx))
|| !TEST_int_eq(EC_POINT_is_on_curve(altgroup, G2, ctx), 1)
|| !TEST_true(EC_GROUP_set_generator(altgroup, G2, z, cof))
)
goto err;
/* verify math checks out */
if (/* allocate temporary points on group and altgroup */
!TEST_ptr(Q1 = EC_POINT_new(group))
|| !TEST_ptr(Q2 = EC_POINT_new(altgroup))
/* fetch a testing scalar k != 0,1 */
|| !TEST_true(BN_rand(k, EC_GROUP_order_bits(group) - 1,
BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY))
/* make k even */
|| !TEST_true(BN_clear_bit(k, 0))
/* Q1 := kG on group */
|| !TEST_true(EC_POINT_mul(group, Q1, k, NULL, NULL, ctx))
/* pull out the bytes of that */
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, ctx), bsize)
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED,
buf1, bsize, ctx), bsize)
/* k := k/2 */
|| !TEST_true(BN_rshift1(k, k))
/* Q2 := k/2 G2 on altgroup */
|| !TEST_true(EC_POINT_mul(altgroup, Q2, k, NULL, NULL, ctx))
/* pull out the bytes of that */
|| !TEST_int_eq(EC_POINT_point2oct(altgroup, Q2,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, ctx), bsize)
|| !TEST_ptr(buf2 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(altgroup, Q2,
POINT_CONVERSION_UNCOMPRESSED,
buf2, bsize, ctx), bsize)
/* Q1 = kG = k/2 G2 = Q2 should hold */
|| !TEST_mem_eq(buf1, bsize, buf2, bsize))
goto err;
/* create two `EC_KEY`s on altgroup */
if (!TEST_ptr(eckey1 = EC_KEY_new())
|| !TEST_true(EC_KEY_set_group(eckey1, altgroup))
|| !TEST_true(EC_KEY_generate_key(eckey1))
|| !TEST_ptr(eckey2 = EC_KEY_new())
|| !TEST_true(EC_KEY_set_group(eckey2, altgroup))
|| !TEST_true(EC_KEY_generate_key(eckey2)))
goto err;
/* retrieve priv1 for later */
if (!TEST_ptr(priv1 = EC_KEY_get0_private_key(eckey1)))
goto err;
/*
* retrieve bytes for pub1 for later
*
* We compute the pub key in the original group as we will later use it to
* define a provider key in the built-in group.
*/
if (!TEST_true(EC_POINT_mul(group, Q1, priv1, NULL, NULL, ctx))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, ctx), bsize)
|| !TEST_ptr(pub1 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED,
pub1, bsize, ctx), bsize))
goto err;
/* retrieve bytes for pub2 for later */
if (!TEST_ptr(Q = EC_KEY_get0_public_key(eckey2))
|| !TEST_int_eq(EC_POINT_point2oct(altgroup, Q,
POINT_CONVERSION_UNCOMPRESSED,
NULL, 0, ctx), bsize)
|| !TEST_ptr(pub2 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(altgroup, Q,
POINT_CONVERSION_UNCOMPRESSED,
pub2, bsize, ctx), bsize))
goto err;
/* create two `EVP_PKEY`s from the `EC_KEY`s */
if(!TEST_ptr(pkey1 = EVP_PKEY_new())
|| !TEST_int_eq(EVP_PKEY_assign_EC_KEY(pkey1, eckey1), 1))
goto err;
eckey1 = NULL; /* ownership passed to pkey1 */
if(!TEST_ptr(pkey2 = EVP_PKEY_new())
|| !TEST_int_eq(EVP_PKEY_assign_EC_KEY(pkey2, eckey2), 1))
goto err;
eckey2 = NULL; /* ownership passed to pkey2 */
/* Compute keyexchange in both directions */
if (!TEST_ptr(pctx1 = EVP_PKEY_CTX_new(pkey1, NULL))
|| !TEST_int_eq(EVP_PKEY_derive_init(pctx1), 1)
|| !TEST_int_eq(EVP_PKEY_derive_set_peer(pctx1, pkey2), 1)
|| !TEST_int_eq(EVP_PKEY_derive(pctx1, NULL, &sslen), 1)
|| !TEST_int_gt(bsize, sslen)
|| !TEST_int_eq(EVP_PKEY_derive(pctx1, buf1, &sslen), 1))
goto err;
if (!TEST_ptr(pctx2 = EVP_PKEY_CTX_new(pkey2, NULL))
|| !TEST_int_eq(EVP_PKEY_derive_init(pctx2), 1)
|| !TEST_int_eq(EVP_PKEY_derive_set_peer(pctx2, pkey1), 1)
|| !TEST_int_eq(EVP_PKEY_derive(pctx2, NULL, &t), 1)
|| !TEST_int_gt(bsize, t)
|| !TEST_int_le(sslen, t)
|| !TEST_int_eq(EVP_PKEY_derive(pctx2, buf2, &t), 1))
goto err;
/* Both sides should expect the same shared secret */
if (!TEST_mem_eq(buf1, sslen, buf2, t))
goto err;
/* Build parameters for provider-native keys */
if (!TEST_ptr(param_bld = OSSL_PARAM_BLD_new())
|| !TEST_true(OSSL_PARAM_BLD_push_utf8_string(param_bld,
OSSL_PKEY_PARAM_GROUP_NAME,
curve_name, 0))
|| !TEST_true(OSSL_PARAM_BLD_push_octet_string(param_bld,
OSSL_PKEY_PARAM_PUB_KEY,
pub1, bsize))
|| !TEST_true(OSSL_PARAM_BLD_push_BN(param_bld,
OSSL_PKEY_PARAM_PRIV_KEY,
priv1))
|| !TEST_ptr(params1 = OSSL_PARAM_BLD_to_param(param_bld)))
goto err;
OSSL_PARAM_BLD_free(param_bld);
if (!TEST_ptr(param_bld = OSSL_PARAM_BLD_new())
|| !TEST_true(OSSL_PARAM_BLD_push_utf8_string(param_bld,
OSSL_PKEY_PARAM_GROUP_NAME,
curve_name, 0))
|| !TEST_true(OSSL_PARAM_BLD_push_octet_string(param_bld,
OSSL_PKEY_PARAM_PUB_KEY,
pub2, bsize))
|| !TEST_ptr(params2 = OSSL_PARAM_BLD_to_param(param_bld)))
goto err;
/* create two new provider-native `EVP_PKEY`s */
EVP_PKEY_CTX_free(pctx2);
if (!TEST_ptr(pctx2 = EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL))
|| !TEST_true(EVP_PKEY_fromdata_init(pctx2))
|| !TEST_true(EVP_PKEY_fromdata(pctx2, &pkey1, EVP_PKEY_KEYPAIR,
params1))
|| !TEST_true(EVP_PKEY_fromdata(pctx2, &pkey2, EVP_PKEY_PUBLIC_KEY,
params2)))
goto err;
/* compute keyexchange once more using the provider keys */
EVP_PKEY_CTX_free(pctx1);
if (!TEST_ptr(pctx1 = EVP_PKEY_CTX_new(pkey1, NULL))
|| !TEST_int_eq(EVP_PKEY_derive_init(pctx1), 1)
|| !TEST_int_eq(EVP_PKEY_derive_set_peer(pctx1, pkey2), 1)
|| !TEST_int_eq(EVP_PKEY_derive(pctx1, NULL, &t), 1)
|| !TEST_int_gt(bsize, t)
|| !TEST_int_le(sslen, t)
|| !TEST_int_eq(EVP_PKEY_derive(pctx1, buf1, &t), 1)
/* compare with previous result */
|| !TEST_mem_eq(buf1, t, buf2, sslen))
goto err;
ret = 1;
err:
BN_CTX_end(ctx);
BN_CTX_free(ctx);
OSSL_PARAM_BLD_free(param_bld);
OSSL_PARAM_free(params1);
OSSL_PARAM_free(params2);
EC_POINT_free(Q1);
EC_POINT_free(Q2);
EC_POINT_free(G2);
EC_GROUP_free(group);
EC_GROUP_free(altgroup);
OPENSSL_free(buf1);
OPENSSL_free(buf2);
OPENSSL_free(pub1);
OPENSSL_free(pub2);
EC_KEY_free(eckey1);
EC_KEY_free(eckey2);
EVP_PKEY_free(pkey1);
EVP_PKEY_free(pkey2);
EVP_PKEY_CTX_free(pctx1);
EVP_PKEY_CTX_free(pctx2);
return ret;
}
int setup_tests(void)
{
crv_len = EC_get_builtin_curves(NULL, 0);
if (!TEST_ptr(curves = OPENSSL_malloc(sizeof(*curves) * crv_len))
|| !TEST_true(EC_get_builtin_curves(curves, crv_len)))
return 0;
ADD_TEST(parameter_test);
ADD_TEST(cofactor_range_test);
ADD_ALL_TESTS(cardinality_test, crv_len);
ADD_TEST(prime_field_tests);
#ifndef OPENSSL_NO_EC2M
ADD_TEST(char2_field_tests);
ADD_ALL_TESTS(char2_curve_test, OSSL_NELEM(char2_curve_tests));
#endif
ADD_ALL_TESTS(nistp_single_test, OSSL_NELEM(nistp_tests_params));
ADD_ALL_TESTS(internal_curve_test, crv_len);
ADD_ALL_TESTS(internal_curve_test_method, crv_len);
ADD_TEST(group_field_test);
ADD_ALL_TESTS(check_named_curve_test, crv_len);
ADD_ALL_TESTS(check_named_curve_lookup_test, crv_len);
ADD_ALL_TESTS(check_ec_key_field_public_range_test, crv_len);
ADD_ALL_TESTS(check_named_curve_from_ecparameters, crv_len);
ADD_ALL_TESTS(ec_point_hex2point_test, crv_len);
/* ADD_ALL_TESTS(custom_generator_test, crv_len);
ADD_ALL_TESTS(custom_params_test, crv_len); */
return 1;
}
void cleanup_tests(void)
{
OPENSSL_free(curves);
}
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