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openssl/0044-FIPS-140-3-keychecks.patch
Dmitry Belyavskiy a0907c129c Use signature for RSA pairwise test according FIPS-140-3 requirements 
Related: rhbz#2102540
2022-08-05 14:31:48 +02:00

188 lines
6.5 KiB
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diff -up openssl-3.0.1/crypto/dh/dh_key.c.fips3 openssl-3.0.1/crypto/dh/dh_key.c
--- openssl-3.0.1/crypto/dh/dh_key.c.fips3 2022-07-18 16:01:41.159543735 +0200
+++ openssl-3.0.1/crypto/dh/dh_key.c 2022-07-18 16:24:30.251388248 +0200
@@ -43,6 +43,9 @@ int ossl_dh_compute_key(unsigned char *k
BN_MONT_CTX *mont = NULL;
BIGNUM *z = NULL, *pminus1;
int ret = -1;
+#ifdef FIPS_MODULE
+ int validate = 0;
+#endif
if (BN_num_bits(dh->params.p) > OPENSSL_DH_MAX_MODULUS_BITS) {
ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE);
@@ -54,6 +57,13 @@ int ossl_dh_compute_key(unsigned char *k
return 0;
}
+#ifdef FIPS_MODULE
+ if (DH_check_pub_key(dh, pub_key, &validate) <= 0) {
+ ERR_raise(ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID);
+ return 0;
+ }
+#endif
+
ctx = BN_CTX_new_ex(dh->libctx);
if (ctx == NULL)
goto err;
@@ -262,6 +272,9 @@ static int generate_key(DH *dh)
#endif
BN_CTX *ctx = NULL;
BIGNUM *pub_key = NULL, *priv_key = NULL;
+#ifdef FIPS_MODULE
+ int validate = 0;
+#endif
if (BN_num_bits(dh->params.p) > OPENSSL_DH_MAX_MODULUS_BITS) {
ERR_raise(ERR_LIB_DH, DH_R_MODULUS_TOO_LARGE);
@@ -354,8 +367,23 @@ static int generate_key(DH *dh)
if (!ossl_dh_generate_public_key(ctx, dh, priv_key, pub_key))
goto err;
+#ifdef FIPS_MODULE
+ if (DH_check_pub_key(dh, pub_key, &validate) <= 0) {
+ ERR_raise(ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID);
+ goto err;
+ }
+#endif
+
dh->pub_key = pub_key;
dh->priv_key = priv_key;
+#ifdef FIPS_MODULE
+ if (ossl_dh_check_pairwise(dh) <= 0) {
+ dh->pub_key = dh->priv_key = NULL;
+ ERR_raise(ERR_LIB_DH, DH_R_CHECK_PUBKEY_INVALID);
+ goto err;
+ }
+#endif
+
dh->dirty_cnt++;
ok = 1;
err:
diff -up openssl-3.0.1/crypto/ec/ec_key.c.fips3 openssl-3.0.1/crypto/ec/ec_key.c
diff -up openssl-3.0.1/providers/implementations/exchange/ecdh_exch.c.fips3 openssl-3.0.1/providers/implementations/exchange/ecdh_exch.c
--- openssl-3.0.1/providers/implementations/exchange/ecdh_exch.c.fips3 2022-07-25 13:42:46.814952053 +0200
+++ openssl-3.0.1/providers/implementations/exchange/ecdh_exch.c 2022-07-25 13:52:12.292065706 +0200
@@ -488,6 +488,25 @@ int ecdh_plain_derive(void *vpecdhctx, u
}
ppubkey = EC_KEY_get0_public_key(pecdhctx->peerk);
+#ifdef FIPS_MODULE
+ {
+ BN_CTX *bn_ctx = BN_CTX_new_ex(ossl_ec_key_get_libctx(privk));
+ int check = 0;
+
+ if (bn_ctx == NULL) {
+ ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+
+ check = ossl_ec_key_public_check(pecdhctx->peerk, bn_ctx);
+ BN_CTX_free(bn_ctx);
+
+ if (check <= 0) {
+ ERR_raise(ERR_LIB_PROV, EC_R_INVALID_PEER_KEY);
+ goto end;
+ }
+ }
+#endif
retlen = ECDH_compute_key(secret, size, ppubkey, privk, NULL);
diff -up openssl-3.0.1/crypto/ec/ec_key.c.fips3 openssl-3.0.1/crypto/ec/ec_key.c
--- openssl-3.0.1/crypto/ec/ec_key.c.fips3 2022-07-25 14:03:34.420222507 +0200
+++ openssl-3.0.1/crypto/ec/ec_key.c 2022-07-25 14:09:00.728164294 +0200
@@ -336,6 +336,11 @@ static int ec_generate_key(EC_KEY *eckey
OSSL_SELF_TEST_get_callback(eckey->libctx, &cb, &cbarg);
ok = ecdsa_keygen_pairwise_test(eckey, cb, cbarg);
+
+#ifdef FIPS_MODULE
+ ok &= ossl_ec_key_public_check(eckey, ctx);
+ ok &= ossl_ec_key_pairwise_check(eckey, ctx);
+#endif /* FIPS_MODULE */
}
err:
/* Step (9): If there is an error return an invalid keypair. */
diff -up openssl-3.0.1/crypto/rsa/rsa_gen.c.fips3 openssl-3.0.1/crypto/rsa/rsa_gen.c
--- openssl-3.0.1/crypto/rsa/rsa_gen.c.fips3 2022-07-25 17:02:17.807271297 +0200
+++ openssl-3.0.1/crypto/rsa/rsa_gen.c 2022-07-25 17:18:24.931959649 +0200
@@ -23,6 +23,7 @@
#include <time.h>
#include "internal/cryptlib.h"
#include <openssl/bn.h>
+#include <openssl/obj_mac.h>
#include <openssl/self_test.h>
#include "prov/providercommon.h"
#include "rsa_local.h"
@@ -476,52 +476,43 @@ static int rsa_keygen(OSSL_LIB_CTX *libc
static int rsa_keygen_pairwise_test(RSA *rsa, OSSL_CALLBACK *cb, void *cbarg)
{
int ret = 0;
- unsigned int ciphertxt_len;
- unsigned char *ciphertxt = NULL;
- const unsigned char plaintxt[16] = {0};
- unsigned char *decoded = NULL;
- unsigned int decoded_len;
- unsigned int plaintxt_len = (unsigned int)sizeof(plaintxt_len);
- int padding = RSA_PKCS1_PADDING;
+ unsigned int signature_len;
+ unsigned char *signature = NULL;
OSSL_SELF_TEST *st = NULL;
+ static const unsigned char dgst[] = {
+ 0x7f, 0x83, 0xb1, 0x65, 0x7f, 0xf1, 0xfc, 0x53, 0xb9, 0x2d, 0xc1, 0x81,
+ 0x48, 0xa1, 0xd6, 0x5d, 0xfc, 0x2d, 0x4b, 0x1f, 0xa3, 0xd6, 0x77, 0x28,
+ 0x4a, 0xdd, 0xd2, 0x00, 0x12, 0x6d, 0x90, 0x69
+ };
st = OSSL_SELF_TEST_new(cb, cbarg);
if (st == NULL)
goto err;
OSSL_SELF_TEST_onbegin(st, OSSL_SELF_TEST_TYPE_PCT,
+ /* No special name for RSA signature PCT*/
OSSL_SELF_TEST_DESC_PCT_RSA_PKCS1);
- ciphertxt_len = RSA_size(rsa);
+ signature_len = RSA_size(rsa);
- /*
- * RSA_private_encrypt() and RSA_private_decrypt() requires the 'to'
- * parameter to be a maximum of RSA_size() - allocate space for both.
- */
- ciphertxt = OPENSSL_zalloc(ciphertxt_len * 2);
- if (ciphertxt == NULL)
+ signature = OPENSSL_zalloc(signature_len);
+ if (signature == NULL)
goto err;
- decoded = ciphertxt + ciphertxt_len;
- ciphertxt_len = RSA_public_encrypt(plaintxt_len, plaintxt, ciphertxt, rsa,
- padding);
- if (ciphertxt_len <= 0)
+ if (RSA_sign(NID_sha256, dgst, sizeof(dgst), signature, &signature_len, rsa) <= 0)
goto err;
- if (ciphertxt_len == plaintxt_len
- && memcmp(ciphertxt, plaintxt, plaintxt_len) == 0)
+
+ if (signature_len <= 0)
goto err;
- OSSL_SELF_TEST_oncorrupt_byte(st, ciphertxt);
+ OSSL_SELF_TEST_oncorrupt_byte(st, signature);
- decoded_len = RSA_private_decrypt(ciphertxt_len, ciphertxt, decoded, rsa,
- padding);
- if (decoded_len != plaintxt_len
- || memcmp(decoded, plaintxt, decoded_len) != 0)
+ if (RSA_verify(NID_sha256, dgst, sizeof(dgst), signature, signature_len, rsa) <= 0)
goto err;
ret = 1;
err:
OSSL_SELF_TEST_onend(st, ret);
OSSL_SELF_TEST_free(st);
- OPENSSL_free(ciphertxt);
+ OPENSSL_free(signature);
return ret;
}
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