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openssl/openssl-1.0.1i-evp-wrap.patch

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add support for RFC 5649
2014-09-08 13:22:44 +00:00
diff -up openssl-1.0.1i/crypto/aes/aes_wrap.c.wrap openssl-1.0.1i/crypto/aes/aes_wrap.c
--- openssl-1.0.1i/crypto/aes/aes_wrap.c.wrap 2014-08-06 23:10:56.000000000 +0200
+++ openssl-1.0.1i/crypto/aes/aes_wrap.c 2014-09-08 15:07:27.331994490 +0200
@@ -53,207 +53,18 @@
#include "cryptlib.h"
#include <openssl/aes.h>
-#include <openssl/bio.h>
-
-static const unsigned char default_iv[] = {
- 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
-};
+#include <openssl/modes.h>
int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
unsigned char *out,
const unsigned char *in, unsigned int inlen)
{
- unsigned char *A, B[16], *R;
- unsigned int i, j, t;
- if ((inlen & 0x7) || (inlen < 8))
- return -1;
- A = B;
- t = 1;
- memcpy(out + 8, in, inlen);
- if (!iv)
- iv = default_iv;
-
- memcpy(A, iv, 8);
-
- for (j = 0; j < 6; j++)
- {
- R = out + 8;
- for (i = 0; i < inlen; i += 8, t++, R += 8)
- {
- memcpy(B + 8, R, 8);
- AES_encrypt(B, B, key);
- A[7] ^= (unsigned char)(t & 0xff);
- if (t > 0xff)
- {
- A[6] ^= (unsigned char)((t >> 8) & 0xff);
- A[5] ^= (unsigned char)((t >> 16) & 0xff);
- A[4] ^= (unsigned char)((t >> 24) & 0xff);
- }
- memcpy(R, B + 8, 8);
- }
- }
- memcpy(out, A, 8);
- return inlen + 8;
+ return CRYPTO_128_wrap(key, iv, out, in, inlen, (block128_f)AES_encrypt);
}
int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
unsigned char *out,
const unsigned char *in, unsigned int inlen)
{
- unsigned char *A, B[16], *R;
- unsigned int i, j, t;
- inlen -= 8;
- if (inlen & 0x7)
- return -1;
- if (inlen < 8)
- return -1;
- A = B;
- t = 6 * (inlen >> 3);
- memcpy(A, in, 8);
- memcpy(out, in + 8, inlen);
- for (j = 0; j < 6; j++)
- {
- R = out + inlen - 8;
- for (i = 0; i < inlen; i += 8, t--, R -= 8)
- {
- A[7] ^= (unsigned char)(t & 0xff);
- if (t > 0xff)
- {
- A[6] ^= (unsigned char)((t >> 8) & 0xff);
- A[5] ^= (unsigned char)((t >> 16) & 0xff);
- A[4] ^= (unsigned char)((t >> 24) & 0xff);
- }
- memcpy(B + 8, R, 8);
- AES_decrypt(B, B, key);
- memcpy(R, B + 8, 8);
- }
- }
- if (!iv)
- iv = default_iv;
- if (memcmp(A, iv, 8))
- {
- OPENSSL_cleanse(out, inlen);
- return 0;
- }
- return inlen;
- }
-
-#ifdef AES_WRAP_TEST
-
-int AES_wrap_unwrap_test(const unsigned char *kek, int keybits,
- const unsigned char *iv,
- const unsigned char *eout,
- const unsigned char *key, int keylen)
- {
- unsigned char *otmp = NULL, *ptmp = NULL;
- int r, ret = 0;
- AES_KEY wctx;
- otmp = OPENSSL_malloc(keylen + 8);
- ptmp = OPENSSL_malloc(keylen);
- if (!otmp || !ptmp)
- return 0;
- if (AES_set_encrypt_key(kek, keybits, &wctx))
- goto err;
- r = AES_wrap_key(&wctx, iv, otmp, key, keylen);
- if (r <= 0)
- goto err;
-
- if (eout && memcmp(eout, otmp, keylen))
- goto err;
-
- if (AES_set_decrypt_key(kek, keybits, &wctx))
- goto err;
- r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
-
- if (memcmp(key, ptmp, keylen))
- goto err;
-
- ret = 1;
-
- err:
- if (otmp)
- OPENSSL_free(otmp);
- if (ptmp)
- OPENSSL_free(ptmp);
-
- return ret;
-
+ return CRYPTO_128_unwrap(key, iv, out, in, inlen, (block128_f)AES_decrypt);
}
-
-
-
-int main(int argc, char **argv)
-{
-
-static const unsigned char kek[] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
- 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
-};
-
-static const unsigned char key[] = {
- 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
- 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
-};
-
-static const unsigned char e1[] = {
- 0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
- 0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
- 0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5
-};
-
-static const unsigned char e2[] = {
- 0x96, 0x77, 0x8b, 0x25, 0xae, 0x6c, 0xa4, 0x35,
- 0xf9, 0x2b, 0x5b, 0x97, 0xc0, 0x50, 0xae, 0xd2,
- 0x46, 0x8a, 0xb8, 0xa1, 0x7a, 0xd8, 0x4e, 0x5d
-};
-
-static const unsigned char e3[] = {
- 0x64, 0xe8, 0xc3, 0xf9, 0xce, 0x0f, 0x5b, 0xa2,
- 0x63, 0xe9, 0x77, 0x79, 0x05, 0x81, 0x8a, 0x2a,
- 0x93, 0xc8, 0x19, 0x1e, 0x7d, 0x6e, 0x8a, 0xe7
-};
-
-static const unsigned char e4[] = {
- 0x03, 0x1d, 0x33, 0x26, 0x4e, 0x15, 0xd3, 0x32,
- 0x68, 0xf2, 0x4e, 0xc2, 0x60, 0x74, 0x3e, 0xdc,
- 0xe1, 0xc6, 0xc7, 0xdd, 0xee, 0x72, 0x5a, 0x93,
- 0x6b, 0xa8, 0x14, 0x91, 0x5c, 0x67, 0x62, 0xd2
-};
-
-static const unsigned char e5[] = {
- 0xa8, 0xf9, 0xbc, 0x16, 0x12, 0xc6, 0x8b, 0x3f,
- 0xf6, 0xe6, 0xf4, 0xfb, 0xe3, 0x0e, 0x71, 0xe4,
- 0x76, 0x9c, 0x8b, 0x80, 0xa3, 0x2c, 0xb8, 0x95,
- 0x8c, 0xd5, 0xd1, 0x7d, 0x6b, 0x25, 0x4d, 0xa1
-};
-
-static const unsigned char e6[] = {
- 0x28, 0xc9, 0xf4, 0x04, 0xc4, 0xb8, 0x10, 0xf4,
- 0xcb, 0xcc, 0xb3, 0x5c, 0xfb, 0x87, 0xf8, 0x26,
- 0x3f, 0x57, 0x86, 0xe2, 0xd8, 0x0e, 0xd3, 0x26,
- 0xcb, 0xc7, 0xf0, 0xe7, 0x1a, 0x99, 0xf4, 0x3b,
- 0xfb, 0x98, 0x8b, 0x9b, 0x7a, 0x02, 0xdd, 0x21
-};
-
- AES_KEY wctx, xctx;
- int ret;
- ret = AES_wrap_unwrap_test(kek, 128, NULL, e1, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 192, NULL, e2, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e3, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 192, NULL, e4, key, 24);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e5, key, 24);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e6, key, 32);
- fprintf(stderr, "Key test result %d\n", ret);
-}
-
-
-#endif
diff -up openssl-1.0.1i/crypto/evp/c_allc.c.wrap openssl-1.0.1i/crypto/evp/c_allc.c
--- openssl-1.0.1i/crypto/evp/c_allc.c.wrap 2014-09-08 15:07:27.254992717 +0200
+++ openssl-1.0.1i/crypto/evp/c_allc.c 2014-09-08 15:07:27.331994490 +0200
@@ -98,6 +98,7 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_des_ecb());
EVP_add_cipher(EVP_des_ede());
EVP_add_cipher(EVP_des_ede3());
+ EVP_add_cipher(EVP_des_ede3_wrap());
#endif
#ifndef OPENSSL_NO_RC4
@@ -177,6 +178,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_128_ctr());
EVP_add_cipher(EVP_aes_128_gcm());
EVP_add_cipher(EVP_aes_128_xts());
+ EVP_add_cipher(EVP_aes_128_wrap());
+ EVP_add_cipher(EVP_aes_128_wrap_pad());
EVP_add_cipher_alias(SN_aes_128_cbc,"AES128");
EVP_add_cipher_alias(SN_aes_128_cbc,"aes128");
EVP_add_cipher(EVP_aes_192_ecb());
@@ -187,6 +190,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_192_ofb());
EVP_add_cipher(EVP_aes_192_ctr());
EVP_add_cipher(EVP_aes_192_gcm());
+ EVP_add_cipher(EVP_aes_192_wrap());
+ EVP_add_cipher(EVP_aes_192_wrap_pad());
EVP_add_cipher_alias(SN_aes_192_cbc,"AES192");
EVP_add_cipher_alias(SN_aes_192_cbc,"aes192");
EVP_add_cipher(EVP_aes_256_ecb());
@@ -198,6 +203,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_256_ctr());
EVP_add_cipher(EVP_aes_256_gcm());
EVP_add_cipher(EVP_aes_256_xts());
+ EVP_add_cipher(EVP_aes_256_wrap());
+ EVP_add_cipher(EVP_aes_256_wrap_pad());
EVP_add_cipher_alias(SN_aes_256_cbc,"AES256");
EVP_add_cipher_alias(SN_aes_256_cbc,"aes256");
#if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
@@ -250,6 +257,7 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_des_ede());
EVP_add_cipher(EVP_des_ede3());
+ EVP_add_cipher(EVP_des_ede3_wrap());
#endif
#ifndef OPENSSL_NO_AES
@@ -262,6 +270,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_128_ctr());
EVP_add_cipher(EVP_aes_128_gcm());
EVP_add_cipher(EVP_aes_128_xts());
+ EVP_add_cipher(EVP_aes_128_wrap());
+ EVP_add_cipher(EVP_aes_128_wrap_pad());
EVP_add_cipher_alias(SN_aes_128_cbc,"AES128");
EVP_add_cipher_alias(SN_aes_128_cbc,"aes128");
EVP_add_cipher(EVP_aes_192_ecb());
@@ -272,6 +282,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_192_ofb());
EVP_add_cipher(EVP_aes_192_ctr());
EVP_add_cipher(EVP_aes_192_gcm());
+ EVP_add_cipher(EVP_aes_192_wrap());
+ EVP_add_cipher(EVP_aes_192_wrap_pad());
EVP_add_cipher_alias(SN_aes_192_cbc,"AES192");
EVP_add_cipher_alias(SN_aes_192_cbc,"aes192");
EVP_add_cipher(EVP_aes_256_ecb());
@@ -283,6 +295,8 @@ void OpenSSL_add_all_ciphers(void)
EVP_add_cipher(EVP_aes_256_ctr());
EVP_add_cipher(EVP_aes_256_gcm());
EVP_add_cipher(EVP_aes_256_xts());
+ EVP_add_cipher(EVP_aes_256_wrap());
+ EVP_add_cipher(EVP_aes_256_wrap_pad());
EVP_add_cipher_alias(SN_aes_256_cbc,"AES256");
EVP_add_cipher_alias(SN_aes_256_cbc,"aes256");
#endif
diff -up openssl-1.0.1i/crypto/evp/e_aes.c.wrap openssl-1.0.1i/crypto/evp/e_aes.c
--- openssl-1.0.1i/crypto/evp/e_aes.c.wrap 2014-09-08 15:07:27.255992740 +0200
+++ openssl-1.0.1i/crypto/evp/e_aes.c 2014-09-08 15:07:27.331994490 +0200
@@ -1,5 +1,5 @@
/* ====================================================================
- * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 2001-2014 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -1384,4 +1384,180 @@ BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm
BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
+typedef struct
+ {
+ union { double align; AES_KEY ks; } ks;
+ /* Indicates if IV has been set */
+ unsigned char *iv;
+ } EVP_AES_WRAP_CTX;
+
+static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+ {
+ EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
+ if (!iv && !key)
+ return 1;
+ if (key)
+ {
+ if (ctx->encrypt)
+ AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
+ else
+ AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
+ if (!iv)
+ wctx->iv = NULL;
+ }
+ if (iv)
+ {
+ memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+ wctx->iv = ctx->iv;
+ }
+ return 1;
+ }
+
+static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inlen)
+ {
+ EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
+ size_t rv;
+ /* AES wrap with padding has IV length of 4, without padding 8 */
+ int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
+ /* No final operation so always return zero length */
+ if (!in)
+ return 0;
+ /* Input length must always be non-zero */
+ if (!inlen)
+ return -1;
+ /* If decrypting need at least 16 bytes and multiple of 8 */
+ if (!ctx->encrypt && (inlen < 16 || inlen & 0x7))
+ return -1;
+ /* If not padding input must be multiple of 8 */
+ if (!pad && inlen & 0x7)
+ return -1;
+ if (!out)
+ {
+ if (ctx->encrypt)
+ {
+ /* If padding round up to multiple of 8 */
+ if (pad)
+ inlen = (inlen + 7)/8 * 8;
+ /* 8 byte prefix */
+ return inlen + 8;
+ }
+ else
+ {
+ /* If not padding output will be exactly 8 bytes
+ * smaller than input. If padding it will be at
+ * least 8 bytes smaller but we don't know how
+ * much.
+ */
+ return inlen - 8;
+ }
+ }
+ if (pad)
+ {
+ if (ctx->encrypt)
+ rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f)AES_encrypt);
+ else
+ rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f)AES_decrypt);
+ }
+ else
+ {
+ if (ctx->encrypt)
+ rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f)AES_encrypt);
+ else
+ rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f)AES_decrypt);
+ }
+ return rv ? (int)rv : -1;
+ }
+
+#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE | EVP_CIPH_FLAG_FIPS \
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
+
+static const EVP_CIPHER aes_128_wrap = {
+ NID_id_aes128_wrap,
+ 8, 16, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_128_wrap(void)
+ {
+ return &aes_128_wrap;
+ }
+
+static const EVP_CIPHER aes_192_wrap = {
+ NID_id_aes192_wrap,
+ 8, 24, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_192_wrap(void)
+ {
+ return &aes_192_wrap;
+ }
+
+static const EVP_CIPHER aes_256_wrap = {
+ NID_id_aes256_wrap,
+ 8, 32, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_256_wrap(void)
+ {
+ return &aes_256_wrap;
+ }
+
+static const EVP_CIPHER aes_128_wrap_pad = {
+ NID_id_aes128_wrap_pad,
+ 8, 16, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_128_wrap_pad(void)
+ {
+ return &aes_128_wrap_pad;
+ }
+
+static const EVP_CIPHER aes_192_wrap_pad = {
+ NID_id_aes192_wrap_pad,
+ 8, 24, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_192_wrap_pad(void)
+ {
+ return &aes_192_wrap_pad;
+ }
+
+static const EVP_CIPHER aes_256_wrap_pad = {
+ NID_id_aes256_wrap_pad,
+ 8, 32, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL,NULL,NULL,NULL };
+
+const EVP_CIPHER *EVP_aes_256_wrap_pad(void)
+ {
+ return &aes_256_wrap_pad;
+ }
+
#endif
diff -up openssl-1.0.1i/crypto/evp/e_des3.c.wrap openssl-1.0.1i/crypto/evp/e_des3.c
--- openssl-1.0.1i/crypto/evp/e_des3.c.wrap 2014-09-08 15:07:27.255992740 +0200
+++ openssl-1.0.1i/crypto/evp/e_des3.c 2014-09-08 15:07:27.332994513 +0200
@@ -310,4 +310,112 @@ const EVP_CIPHER *EVP_des_ede3(void)
{
return &des_ede3_ecb;
}
+
+#ifndef OPENSSL_NO_SHA
+
+#include <openssl/sha.h>
+
+static const unsigned char wrap_iv[8] = {0x4a,0xdd,0xa2,0x2c,0x79,0xe8,0x21,0x05};
+
+static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
+ int rv = -1;
+ if (inl < 24)
+ return -1;
+ if (!out)
+ return inl - 16;
+ memcpy(ctx->iv, wrap_iv, 8);
+ /* Decrypt first block which will end up as icv */
+ des_ede_cbc_cipher(ctx, icv, in, 8);
+ /* Decrypt central blocks */
+ /* If decrypting in place move whole output along a block
+ * so the next des_ede_cbc_cipher is in place.
+ */
+ if (out == in)
+ {
+ memmove(out, out + 8, inl - 8);
+ in -= 8;
+ }
+ des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
+ /* Decrypt final block which will be IV */
+ des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
+ /* Reverse order of everything */
+ BUF_reverse(icv, NULL, 8);
+ BUF_reverse(out, NULL, inl - 16);
+ BUF_reverse(ctx->iv, iv, 8);
+ /* Decrypt again using new IV */
+ des_ede_cbc_cipher(ctx, out, out, inl - 16);
+ des_ede_cbc_cipher(ctx, icv, icv, 8);
+ /* Work out SHA1 hash of first portion */
+ SHA1(out, inl - 16, sha1tmp);
+
+ if (!CRYPTO_memcmp(sha1tmp, icv, 8))
+ rv = inl - 16;
+ OPENSSL_cleanse(icv, 8);
+ OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
+ OPENSSL_cleanse(iv, 8);
+ OPENSSL_cleanse(ctx->iv, 8);
+ if (rv == -1)
+ OPENSSL_cleanse(out, inl - 16);
+
+ return rv;
+ }
+
+static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ unsigned char sha1tmp[SHA_DIGEST_LENGTH];
+ if (!out)
+ return inl + 16;
+ /* Copy input to output buffer + 8 so we have space for IV */
+ memmove(out + 8, in, inl);
+ /* Work out ICV */
+ SHA1(in, inl, sha1tmp);
+ memcpy(out + inl + 8, sha1tmp, 8);
+ OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
+ /* Generate random IV */
+ RAND_bytes(ctx->iv, 8);
+ memcpy(out, ctx->iv, 8);
+ /* Encrypt everything after IV in place */
+ des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
+ BUF_reverse(out, NULL, inl + 16);
+ memcpy(ctx->iv, wrap_iv, 8);
+ des_ede_cbc_cipher(ctx, out, out, inl + 16);
+ return inl + 16;
+ }
+
+static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ /* Sanity check input length: we typically only wrap keys
+ * so EVP_MAXCHUNK is more than will ever be needed. Also
+ * input length must be a multiple of 8 bits.
+ */
+ if (inl >= EVP_MAXCHUNK || inl % 8)
+ return -1;
+ if (ctx->encrypt)
+ return des_ede3_wrap(ctx, out, in, inl);
+ else
+ return des_ede3_unwrap(ctx, out, in, inl);
+ }
+
+static const EVP_CIPHER des3_wrap = {
+ NID_id_smime_alg_CMS3DESwrap,
+ 8, 24, 0,
+ EVP_CIPH_WRAP_MODE|EVP_CIPH_CUSTOM_IV|EVP_CIPH_FLAG_CUSTOM_CIPHER
+ |EVP_CIPH_FLAG_DEFAULT_ASN1|EVP_CIPH_FLAG_FIPS,
+ des_ede3_init_key, des_ede3_wrap_cipher,
+ NULL,
+ sizeof(DES_EDE_KEY),
+ NULL,NULL,NULL,NULL };
+
+
+const EVP_CIPHER *EVP_des_ede3_wrap(void)
+ {
+ return &des3_wrap;
+ }
+
+# endif
#endif
diff -up openssl-1.0.1i/crypto/evp/evp_enc.c.wrap openssl-1.0.1i/crypto/evp/evp_enc.c
--- openssl-1.0.1i/crypto/evp/evp_enc.c.wrap 2014-09-08 15:07:27.255992740 +0200
+++ openssl-1.0.1i/crypto/evp/evp_enc.c 2014-09-08 15:07:27.332994513 +0200
@@ -233,7 +233,8 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ct
ctx->cipher_data = NULL;
}
ctx->key_len = cipher->key_len;
- ctx->flags = 0;
+ /* Preserve wrap enable flag, zero everything else */
+ ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
{
if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
@@ -256,6 +257,13 @@ skip_to_init:
|| ctx->cipher->block_size == 8
|| ctx->cipher->block_size == 16);
+ if(!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
+ && EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE)
+ {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_WRAP_MODE_NOT_ALLOWED);
+ return 0;
+ }
+
if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
switch(EVP_CIPHER_CTX_mode(ctx)) {
diff -up openssl-1.0.1i/crypto/evp/evp_err.c.wrap openssl-1.0.1i/crypto/evp/evp_err.c
--- openssl-1.0.1i/crypto/evp/evp_err.c.wrap 2014-08-06 23:10:56.000000000 +0200
+++ openssl-1.0.1i/crypto/evp/evp_err.c 2014-09-08 15:07:27.332994513 +0200
@@ -1,6 +1,6 @@
/* crypto/evp/evp_err.c */
/* ====================================================================
- * Copyright (c) 1999-2011 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1999-2013 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -220,6 +220,7 @@ static ERR_STRING_DATA EVP_str_reasons[]
{ERR_REASON(EVP_R_UNSUPPORTED_PRF) ,"unsupported prf"},
{ERR_REASON(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM),"unsupported private key algorithm"},
{ERR_REASON(EVP_R_UNSUPPORTED_SALT_TYPE) ,"unsupported salt type"},
+{ERR_REASON(EVP_R_WRAP_MODE_NOT_ALLOWED) ,"wrap mode not allowed"},
{ERR_REASON(EVP_R_WRONG_FINAL_BLOCK_LENGTH),"wrong final block length"},
{ERR_REASON(EVP_R_WRONG_PUBLIC_KEY_TYPE) ,"wrong public key type"},
{0,NULL}
diff -up openssl-1.0.1i/crypto/evp/evp.h.wrap openssl-1.0.1i/crypto/evp/evp.h
--- openssl-1.0.1i/crypto/evp/evp.h.wrap 2014-09-08 15:07:27.256992763 +0200
+++ openssl-1.0.1i/crypto/evp/evp.h 2014-09-08 15:07:27.332994513 +0200
@@ -336,6 +336,7 @@ struct evp_cipher_st
#define EVP_CIPH_GCM_MODE 0x6
#define EVP_CIPH_CCM_MODE 0x7
#define EVP_CIPH_XTS_MODE 0x10001
+#define EVP_CIPH_WRAP_MODE 0x10002
#define EVP_CIPH_MODE 0xF0007
/* Set if variable length cipher */
#define EVP_CIPH_VARIABLE_LENGTH 0x8
@@ -367,6 +368,13 @@ struct evp_cipher_st
#define EVP_CIPH_FLAG_CUSTOM_CIPHER 0x100000
#define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
+/* Cipher context flag to indicate we can handle
+ * wrap mode: if allowed in older applications it could
+ * overflow buffers.
+ */
+
+#define EVP_CIPHER_CTX_FLAG_WRAP_ALLOW 0x1
+
/* ctrl() values */
#define EVP_CTRL_INIT 0x0
@@ -729,6 +737,7 @@ const EVP_CIPHER *EVP_des_cbc(void);
const EVP_CIPHER *EVP_des_ede_cbc(void);
const EVP_CIPHER *EVP_des_ede3_cbc(void);
const EVP_CIPHER *EVP_desx_cbc(void);
+const EVP_CIPHER *EVP_des_ede3_wrap(void);
/* This should now be supported through the dev_crypto ENGINE. But also, why are
* rc4 and md5 declarations made here inside a "NO_DES" precompiler branch? */
#if 0
@@ -788,6 +797,8 @@ const EVP_CIPHER *EVP_aes_128_ctr(void);
const EVP_CIPHER *EVP_aes_128_ccm(void);
const EVP_CIPHER *EVP_aes_128_gcm(void);
const EVP_CIPHER *EVP_aes_128_xts(void);
+const EVP_CIPHER *EVP_aes_128_wrap(void);
+const EVP_CIPHER *EVP_aes_128_wrap_pad(void);
const EVP_CIPHER *EVP_aes_192_ecb(void);
const EVP_CIPHER *EVP_aes_192_cbc(void);
const EVP_CIPHER *EVP_aes_192_cfb1(void);
@@ -798,6 +809,8 @@ const EVP_CIPHER *EVP_aes_192_ofb(void);
const EVP_CIPHER *EVP_aes_192_ctr(void);
const EVP_CIPHER *EVP_aes_192_ccm(void);
const EVP_CIPHER *EVP_aes_192_gcm(void);
+const EVP_CIPHER *EVP_aes_192_wrap(void);
+const EVP_CIPHER *EVP_aes_192_wrap_pad(void);
const EVP_CIPHER *EVP_aes_256_ecb(void);
const EVP_CIPHER *EVP_aes_256_cbc(void);
const EVP_CIPHER *EVP_aes_256_cfb1(void);
@@ -809,6 +822,8 @@ const EVP_CIPHER *EVP_aes_256_ctr(void);
const EVP_CIPHER *EVP_aes_256_ccm(void);
const EVP_CIPHER *EVP_aes_256_gcm(void);
const EVP_CIPHER *EVP_aes_256_xts(void);
+const EVP_CIPHER *EVP_aes_256_wrap(void);
+const EVP_CIPHER *EVP_aes_256_wrap_pad(void);
#if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
@@ -1397,6 +1412,7 @@ void ERR_load_EVP_strings(void);
#define EVP_R_UNSUPPORTED_PRF 125
#define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM 118
#define EVP_R_UNSUPPORTED_SALT_TYPE 126
+#define EVP_R_WRAP_MODE_NOT_ALLOWED 170
#define EVP_R_WRONG_FINAL_BLOCK_LENGTH 109
#define EVP_R_WRONG_PUBLIC_KEY_TYPE 110
diff -up openssl-1.0.1i/crypto/evp/evp_lib.c.wrap openssl-1.0.1i/crypto/evp/evp_lib.c
--- openssl-1.0.1i/crypto/evp/evp_lib.c.wrap 2014-09-08 15:07:27.256992763 +0200
+++ openssl-1.0.1i/crypto/evp/evp_lib.c 2014-09-08 15:07:27.332994513 +0200
@@ -68,7 +68,15 @@ int EVP_CIPHER_param_to_asn1(EVP_CIPHER_
if (c->cipher->set_asn1_parameters != NULL)
ret=c->cipher->set_asn1_parameters(c,type);
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
- ret=EVP_CIPHER_set_asn1_iv(c, type);
+ {
+ if (EVP_CIPHER_CTX_mode(c) == EVP_CIPH_WRAP_MODE)
+ {
+ ASN1_TYPE_set(type, V_ASN1_NULL, NULL);
+ ret = 1;
+ }
+ else
+ ret=EVP_CIPHER_set_asn1_iv(c, type);
+ }
else
ret=-1;
return(ret);
@@ -81,7 +89,11 @@ int EVP_CIPHER_asn1_to_param(EVP_CIPHER_
if (c->cipher->get_asn1_parameters != NULL)
ret=c->cipher->get_asn1_parameters(c,type);
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
+ {
+ if (EVP_CIPHER_CTX_mode(c) == EVP_CIPH_WRAP_MODE)
+ return 1;
ret=EVP_CIPHER_get_asn1_iv(c, type);
+ }
else
ret=-1;
return(ret);
diff -up openssl-1.0.1i/crypto/evp/evp_test.c.wrap openssl-1.0.1i/crypto/evp/evp_test.c
--- openssl-1.0.1i/crypto/evp/evp_test.c.wrap 2014-08-06 23:10:56.000000000 +0200
+++ openssl-1.0.1i/crypto/evp/evp_test.c 2014-09-08 15:07:27.333994536 +0200
@@ -141,7 +141,7 @@ static void test1(const EVP_CIPHER *c,co
{
EVP_CIPHER_CTX ctx;
unsigned char out[4096];
- int outl,outl2;
+ int outl,outl2,mode;
printf("Testing cipher %s%s\n",EVP_CIPHER_name(c),
(encdec == 1 ? "(encrypt)" : (encdec == 0 ? "(decrypt)" : "(encrypt/decrypt)")));
@@ -151,6 +151,7 @@ static void test1(const EVP_CIPHER *c,co
hexdump(stdout,"Plaintext",plaintext,pn);
hexdump(stdout,"Ciphertext",ciphertext,cn);
+ mode = EVP_CIPHER_mode(c);
if(kn != c->key_len)
{
fprintf(stderr,"Key length doesn't match, got %d expected %lu\n",kn,
@@ -158,9 +159,19 @@ static void test1(const EVP_CIPHER *c,co
test1_exit(5);
}
EVP_CIPHER_CTX_init(&ctx);
+ EVP_CIPHER_CTX_set_flags(&ctx,EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
if (encdec != 0)
{
- if(!EVP_EncryptInit_ex(&ctx,c,NULL,key,iv))
+ if (mode == EVP_CIPH_WRAP_MODE)
+ {
+ if(!EVP_EncryptInit_ex(&ctx,c,NULL,key,in ? iv : NULL))
+ {
+ fprintf(stderr,"EncryptInit failed\n");
+ ERR_print_errors_fp(stderr);
+ test1_exit(10);
+ }
+ }
+ else if(!EVP_EncryptInit_ex(&ctx,c,NULL,key,iv))
{
fprintf(stderr,"EncryptInit failed\n");
ERR_print_errors_fp(stderr);
@@ -199,7 +210,16 @@ static void test1(const EVP_CIPHER *c,co
if (encdec <= 0)
{
- if(!EVP_DecryptInit_ex(&ctx,c,NULL,key,iv))
+ if (mode == EVP_CIPH_WRAP_MODE)
+ {
+ if(!EVP_DecryptInit_ex(&ctx,c,NULL,key,in ? iv : NULL))
+ {
+ fprintf(stderr,"EncryptInit failed\n");
+ ERR_print_errors_fp(stderr);
+ test1_exit(10);
+ }
+ }
+ else if(!EVP_DecryptInit_ex(&ctx,c,NULL,key,iv))
{
fprintf(stderr,"DecryptInit failed\n");
ERR_print_errors_fp(stderr);
@@ -339,7 +359,7 @@ int main(int argc,char **argv)
perror(szTestFile);
EXIT(2);
}
-
+ ERR_load_crypto_strings();
/* Load up the software EVP_CIPHER and EVP_MD definitions */
OpenSSL_add_all_ciphers();
OpenSSL_add_all_digests();
diff -up openssl-1.0.1i/crypto/evp/evptests.txt.wrap openssl-1.0.1i/crypto/evp/evptests.txt
--- openssl-1.0.1i/crypto/evp/evptests.txt.wrap 2014-08-06 23:10:56.000000000 +0200
+++ openssl-1.0.1i/crypto/evp/evptests.txt 2014-09-08 15:07:27.333994536 +0200
@@ -332,3 +332,15 @@ SEED-ECB:0000000000000000000000000000000
SEED-ECB:000102030405060708090A0B0C0D0E0F::00000000000000000000000000000000:C11F22F20140505084483597E4370F43:1
SEED-ECB:4706480851E61BE85D74BFB3FD956185::83A2F8A288641FB9A4E9A5CC2F131C7D:EE54D13EBCAE706D226BC3142CD40D4A:1
SEED-ECB:28DBC3BC49FFD87DCFA509B11D422BE7::B41E6BE2EBA84A148E2EED84593C5EC7:9B9B7BFCD1813CB95D0B3618F40F5122:1
+
+# AES wrap tests from RFC3394
+id-aes128-wrap:000102030405060708090A0B0C0D0E0F::00112233445566778899AABBCCDDEEFF:1FA68B0A8112B447AEF34BD8FB5A7B829D3E862371D2CFE5
+id-aes192-wrap:000102030405060708090A0B0C0D0E0F1011121314151617::00112233445566778899AABBCCDDEEFF:96778B25AE6CA435F92B5B97C050AED2468AB8A17AD84E5D
+id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF:64E8C3F9CE0F5BA263E9777905818A2A93C8191E7D6E8AE7
+id-aes192-wrap:000102030405060708090A0B0C0D0E0F1011121314151617::00112233445566778899AABBCCDDEEFF0001020304050607:031D33264E15D33268F24EC260743EDCE1C6C7DDEE725A936BA814915C6762D2
+id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF0001020304050607:A8F9BC1612C68B3FF6E6F4FBE30E71E4769C8B80A32CB8958CD5D17D6B254DA1
+id-aes256-wrap:000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F::00112233445566778899AABBCCDDEEFF000102030405060708090A0B0C0D0E0F:28C9F404C4B810F4CBCCB35CFB87F8263F5786E2D80ED326CBC7F0E71A99F43BFB988B9B7A02DD21
+# AES wrap tests from RFC5649
+id-aes192-wrap-pad:5840df6e29b02af1ab493b705bf16ea1ae8338f4dcc176a8::c37b7e6492584340bed12207808941155068f738:138bdeaa9b8fa7fc61f97742e72248ee5ae6ae5360d1ae6a5f54f373fa543b6a
+id-aes192-wrap-pad:5840df6e29b02af1ab493b705bf16ea1ae8338f4dcc176a8::466f7250617369:afbeb0f07dfbf5419200f2ccb50bb24f
+
diff -up openssl-1.0.1i/crypto/modes/Makefile.wrap openssl-1.0.1i/crypto/modes/Makefile
--- openssl-1.0.1i/crypto/modes/Makefile.wrap 2014-09-08 15:07:27.233992233 +0200
+++ openssl-1.0.1i/crypto/modes/Makefile 2014-09-08 15:07:27.333994536 +0200
@@ -22,9 +22,9 @@ APPS=
LIB=$(TOP)/libcrypto.a
LIBSRC= cbc128.c ctr128.c cts128.c cfb128.c ofb128.c gcm128.c \
- ccm128.c xts128.c
+ ccm128.c xts128.c wrap128.c
LIBOBJ= cbc128.o ctr128.o cts128.o cfb128.o ofb128.o gcm128.o \
- ccm128.o xts128.o $(MODES_ASM_OBJ)
+ ccm128.o xts128.o wrap128.o $(MODES_ASM_OBJ)
SRC= $(LIBSRC)
diff -up openssl-1.0.1i/crypto/modes/modes.h.wrap openssl-1.0.1i/crypto/modes/modes.h
--- openssl-1.0.1i/crypto/modes/modes.h.wrap 2014-09-08 15:07:26.865983757 +0200
+++ openssl-1.0.1i/crypto/modes/modes.h 2014-09-08 15:07:27.333994536 +0200
@@ -133,3 +133,17 @@ typedef struct xts128_context XTS128_CON
int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx, const unsigned char iv[16],
const unsigned char *inp, unsigned char *out, size_t len, int enc);
+
+size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block);
+
+size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block);
+size_t CRYPTO_128_wrap_pad(void *key, const unsigned char *icv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block);
+size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block);
diff -up openssl-1.0.1i/crypto/modes/wrap128.c.wrap openssl-1.0.1i/crypto/modes/wrap128.c
--- openssl-1.0.1i/crypto/modes/wrap128.c.wrap 2014-09-08 15:07:27.333994536 +0200
+++ openssl-1.0.1i/crypto/modes/wrap128.c 2014-09-08 15:07:27.333994536 +0200
@@ -0,0 +1,372 @@
+/* crypto/modes/wrap128.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ * Mode with padding contributed by Petr Spacek (pspacek@redhat.com).
+ */
+/* ====================================================================
+ * Copyright (c) 2013 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ */
+
+/** Beware!
+ *
+ * Following wrapping modes were designed for AES but this implementation
+ * allows you to use them for any 128 bit block cipher.
+ */
+
+#include "cryptlib.h"
+#include <openssl/modes.h>
+
+/** RFC 3394 section 2.2.3.1 Default Initial Value */
+static const unsigned char default_iv[] = {
+ 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
+};
+
+/** RFC 5649 section 3 Alternative Initial Value 32-bit constant */
+static const unsigned char default_aiv[] = {
+ 0xA6, 0x59, 0x59, 0xA6
+};
+
+/** Input size limit: lower than maximum of standards but far larger than
+ * anything that will be used in practice.
+ */
+#define CRYPTO128_WRAP_MAX (1UL << 31)
+
+/** Wrapping according to RFC 3394 section 2.2.1.
+ *
+ * @param[in] key Key value.
+ * @param[in] iv IV value. Length = 8 bytes. NULL = use default_iv.
+ * @param[in] in Plain text as n 64-bit blocks, n >= 2.
+ * @param[in] inlen Length of in.
+ * @param[out] out Cipher text. Minimal buffer length = (inlen + 8) bytes.
+ * Input and output buffers can overlap if block function
+ * supports that.
+ * @param[in] block Block processing function.
+ * @return 0 if inlen does not consist of n 64-bit blocks, n >= 2.
+ * or if inlen > CRYPTO128_WRAP_MAX.
+ * Output length if wrapping succeeded.
+ */
+size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block)
+ {
+ unsigned char *A, B[16], *R;
+ size_t i, j, t;
+ if ((inlen & 0x7) || (inlen < 16) || (inlen > CRYPTO128_WRAP_MAX))
+ return 0;
+ A = B;
+ t = 1;
+ memmove(out + 8, in, inlen);
+ if (!iv)
+ iv = default_iv;
+
+ memcpy(A, iv, 8);
+
+ for (j = 0; j < 6; j++)
+ {
+ R = out + 8;
+ for (i = 0; i < inlen; i += 8, t++, R += 8)
+ {
+ memcpy(B + 8, R, 8);
+ block(B, B, key);
+ A[7] ^= (unsigned char)(t & 0xff);
+ if (t > 0xff)
+ {
+ A[6] ^= (unsigned char)((t >> 8) & 0xff);
+ A[5] ^= (unsigned char)((t >> 16) & 0xff);
+ A[4] ^= (unsigned char)((t >> 24) & 0xff);
+ }
+ memcpy(R, B + 8, 8);
+ }
+ }
+ memcpy(out, A, 8);
+ return inlen + 8;
+ }
+
+
+/** Unwrapping according to RFC 3394 section 2.2.2 steps 1-2.
+ * IV check (step 3) is responsibility of the caller.
+ *
+ * @param[in] key Key value.
+ * @param[out] iv Unchecked IV value. Minimal buffer length = 8 bytes.
+ * @param[out] out Plain text without IV.
+ * Minimal buffer length = (inlen - 8) bytes.
+ * Input and output buffers can overlap if block function
+ * supports that.
+ * @param[in] in Ciphertext text as n 64-bit blocks
+ * @param[in] inlen Length of in.
+ * @param[in] block Block processing function.
+ * @return 0 if inlen is out of range [24, CRYPTO128_WRAP_MAX]
+ * or if inlen is not multiply of 8.
+ * Output length otherwise.
+ */
+static size_t crypto_128_unwrap_raw(void *key, unsigned char *iv,
+ unsigned char *out, const unsigned char *in,
+ size_t inlen, block128_f block)
+ {
+ unsigned char *A, B[16], *R;
+ size_t i, j, t;
+ inlen -= 8;
+ if ((inlen & 0x7) || (inlen < 16) || (inlen > CRYPTO128_WRAP_MAX))
+ return 0;
+ A = B;
+ t = 6 * (inlen >> 3);
+ memcpy(A, in, 8);
+ memmove(out, in + 8, inlen);
+ for (j = 0; j < 6; j++)
+ {
+ R = out + inlen - 8;
+ for (i = 0; i < inlen; i += 8, t--, R -= 8)
+ {
+ A[7] ^= (unsigned char)(t & 0xff);
+ if (t > 0xff)
+ {
+ A[6] ^= (unsigned char)((t >> 8) & 0xff);
+ A[5] ^= (unsigned char)((t >> 16) & 0xff);
+ A[4] ^= (unsigned char)((t >> 24) & 0xff);
+ }
+ memcpy(B + 8, R, 8);
+ block(B, B, key);
+ memcpy(R, B + 8, 8);
+ }
+ }
+ memcpy(iv, A, 8);
+ return inlen;
+ }
+
+/** Unwrapping according to RFC 3394 section 2.2.2 including IV check.
+ * First block of plain text have to match supplied IV otherwise an error is
+ * returned.
+ *
+ * @param[in] key Key value.
+ * @param[out] iv Unchecked IV value. Minimal buffer length = 8 bytes.
+ * @param[out] out Plain text without IV.
+ * Minimal buffer length = (inlen - 8) bytes.
+ * Input and output buffers can overlap if block function
+ * supports that.
+ * @param[in] in Ciphertext text as n 64-bit blocks
+ * @param[in] inlen Length of in.
+ * @param[in] block Block processing function.
+ * @return 0 if inlen is out of range [24, CRYPTO128_WRAP_MAX]
+ * or if inlen is not multiply of 8
+ * or if IV doesn't match expected value.
+ * Output length otherwise.
+ */
+size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
+ unsigned char *out, const unsigned char *in, size_t inlen,
+ block128_f block)
+ {
+ size_t ret;
+ unsigned char got_iv[8];
+
+ ret = crypto_128_unwrap_raw(key, got_iv, out, in, inlen, block);
+ if (ret != inlen)
+ return ret;
+
+ if (!iv)
+ iv = default_iv;
+ if (CRYPTO_memcmp(out, iv, 8))
+ {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+ return inlen;
+ }
+
+/** Wrapping according to RFC 5649 section 4.1.
+ *
+ * @param[in] key Key value.
+ * @param[in] icv (Non-standard) IV, 4 bytes. NULL = use default_aiv.
+ * @param[out] out Cipher text. Minimal buffer length = (inlen + 15) bytes.
+ * Input and output buffers can overlap if block function
+ * supports that.
+ * @param[in] in Plain text as n 64-bit blocks, n >= 2.
+ * @param[in] inlen Length of in.
+ * @param[in] block Block processing function.
+ * @return 0 if inlen is out of range [1, CRYPTO128_WRAP_MAX].
+ * Output length if wrapping succeeded.
+ */
+size_t CRYPTO_128_wrap_pad(void *key, const unsigned char *icv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block)
+ {
+ /* n: number of 64-bit blocks in the padded key data */
+ const size_t blocks_padded = (inlen + 8) / 8;
+ const size_t padded_len = blocks_padded * 8;
+ const size_t padding_len = padded_len - inlen;
+ /* RFC 5649 section 3: Alternative Initial Value */
+ unsigned char aiv[8];
+ int ret;
+
+ /* Section 1: use 32-bit fixed field for plaintext octet length */
+ if (inlen == 0 || inlen >= CRYPTO128_WRAP_MAX)
+ return 0;
+
+ /* Section 3: Alternative Initial Value */
+ if (!icv)
+ memcpy(aiv, default_aiv, 4);
+ else
+ memcpy(aiv, icv, 4); /* Standard doesn't mention this. */
+
+ aiv[4] = (inlen >> 24) & 0xFF;
+ aiv[5] = (inlen >> 16) & 0xFF;
+ aiv[6] = (inlen >> 8) & 0xFF;
+ aiv[7] = inlen & 0xFF;
+
+ if (padded_len == 8)
+ {
+ /* Section 4.1 - special case in step 2:
+ * If the padded plaintext contains exactly eight octets, then
+ * prepend the AIV and encrypt the resulting 128-bit block
+ * using AES in ECB mode. */
+ memmove(out + 8, in, inlen);
+ memcpy(out, aiv, 8);
+ memset(out + 8 + inlen, 0, padding_len);
+ block(out, out, key);
+ ret = 16; /* AIV + padded input */
+ }
+ else
+ {
+ memmove(out, in, inlen);
+ memset(out + inlen, 0, padding_len); /* Section 4.1 step 1 */
+ ret = CRYPTO_128_wrap(key, aiv, out, out, padded_len, block);
+ }
+
+ return ret;
+ }
+
+/** Unwrapping according to RFC 5649 section 4.2.
+ *
+ * @param[in] key Key value.
+ * @param[in] icv (Non-standard) IV, 4 bytes. NULL = use default_aiv.
+ * @param[out] out Plain text. Minimal buffer length = inlen bytes.
+ * Input and output buffers can overlap if block function
+ * supports that.
+ * @param[in] in Ciphertext text as n 64-bit blocks
+ * @param[in] inlen Length of in.
+ * @param[in] block Block processing function.
+ * @return 0 if inlen is out of range [16, CRYPTO128_WRAP_MAX],
+ * or if inlen is not multiply of 8
+ * or if IV and message length indicator doesn't match.
+ * Output length if unwrapping succeeded and IV matches.
+ */
+size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen, block128_f block)
+ {
+ /* n: number of 64-bit blocks in the padded key data */
+ size_t n = inlen / 8 - 1;
+ size_t padded_len;
+ size_t padding_len;
+ size_t ptext_len;
+ /* RFC 5649 section 3: Alternative Initial Value */
+ unsigned char aiv[8];
+ static unsigned char zeros[8] = {0x0};
+ size_t ret;
+
+ /* Section 4.2: Cipher text length has to be (n+1) 64-bit blocks. */
+ if ((inlen & 0x7) != 0 || inlen < 16 || inlen >= CRYPTO128_WRAP_MAX)
+ return 0;
+
+ memmove(out, in, inlen);
+ if (inlen == 16)
+ {
+ /* Section 4.2 - special case in step 1:
+ * When n=1, the ciphertext contains exactly two 64-bit
+ * blocks and they are decrypted as a single AES
+ * block using AES in ECB mode:
+ * AIV | P[1] = DEC(K, C[0] | C[1])
+ */
+ block(out, out, key);
+ memcpy(aiv, out, 8);
+ /* Remove AIV */
+ memmove(out, out + 8, 8);
+ padded_len = 8;
+ }
+ else
+ {
+ padded_len = inlen - 8;
+ ret = crypto_128_unwrap_raw(key, aiv, out, out, inlen, block);
+ if (padded_len != ret)
+ {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+ }
+
+ /* Section 3: AIV checks: Check that MSB(32,A) = A65959A6.
+ * Optionally a user-supplied value can be used
+ * (even if standard doesn't mention this). */
+ if ((!icv && CRYPTO_memcmp(aiv, default_aiv, 4))
+ || (icv && CRYPTO_memcmp(aiv, icv, 4)))
+ {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+
+ /* Check that 8*(n-1) < LSB(32,AIV) <= 8*n.
+ * If so, let ptext_len = LSB(32,AIV). */
+
+ ptext_len = (aiv[4] << 24) | (aiv[5] << 16) | (aiv[6] << 8) | aiv[7];
+ if (8*(n-1) >= ptext_len || ptext_len > 8*n)
+ {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+
+ /* Check that the rightmost padding_len octets of the output data
+ * are zero. */
+ padding_len = padded_len - ptext_len;
+ if (CRYPTO_memcmp(out + ptext_len, zeros, padding_len) != 0)
+ {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+
+ /* Section 4.2 step 3: Remove padding */
+ return ptext_len;
+ }
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