diff -up openssl-1.0.1e/crypto/aes/aes_wrap.c.wrap openssl-1.0.1e/crypto/aes/aes_wrap.c --- openssl-1.0.1e/crypto/aes/aes_wrap.c.wrap 2013-02-11 16:02:47.000000000 +0100 +++ openssl-1.0.1e/crypto/aes/aes_wrap.c 2014-09-09 16:12:25.852801573 +0200 @@ -53,207 +53,18 @@ #include "cryptlib.h" #include -#include - -static const unsigned char default_iv[] = { - 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, -}; +#include 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-1.0.1e/crypto/evp/c_allc.c.wrap openssl-1.0.1e/crypto/evp/c_allc.c --- openssl-1.0.1e/crypto/evp/c_allc.c.wrap 2014-09-09 16:11:24.103379348 +0200 +++ openssl-1.0.1e/crypto/evp/c_allc.c 2014-09-09 16:12:25.853801601 +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-1.0.1e/crypto/evp/e_aes.c.wrap openssl-1.0.1e/crypto/evp/e_aes.c --- openssl-1.0.1e/crypto/evp/e_aes.c.wrap 2014-09-09 16:11:24.103379348 +0200 +++ openssl-1.0.1e/crypto/evp/e_aes.c 2014-09-09 16:12:25.853801601 +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 @@ -1323,4 +1323,180 @@ 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-1.0.1e/crypto/evp/e_des3.c.wrap openssl-1.0.1e/crypto/evp/e_des3.c --- openssl-1.0.1e/crypto/evp/e_des3.c.wrap 2014-09-09 16:11:24.104379372 +0200 +++ openssl-1.0.1e/crypto/evp/e_des3.c 2014-09-09 16:12:25.854801627 +0200 @@ -310,4 +310,112 @@ const EVP_CIPHER *EVP_des_ede3(void) { return &des_ede3_ecb; } + +#ifndef OPENSSL_NO_SHA + +#include + +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-1.0.1e/crypto/evp/evp_enc.c.wrap openssl-1.0.1e/crypto/evp/evp_enc.c --- openssl-1.0.1e/crypto/evp/evp_enc.c.wrap 2014-09-09 16:11:24.104379372 +0200 +++ openssl-1.0.1e/crypto/evp/evp_enc.c 2014-09-09 16:12:25.854801627 +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-1.0.1e/crypto/evp/evp_err.c.wrap openssl-1.0.1e/crypto/evp/evp_err.c --- openssl-1.0.1e/crypto/evp/evp_err.c.wrap 2013-02-11 16:26:04.000000000 +0100 +++ openssl-1.0.1e/crypto/evp/evp_err.c 2014-09-09 16:12:25.854801627 +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-1.0.1e/crypto/evp/evp.h.wrap openssl-1.0.1e/crypto/evp/evp.h --- openssl-1.0.1e/crypto/evp/evp.h.wrap 2014-09-09 16:11:24.104379372 +0200 +++ openssl-1.0.1e/crypto/evp/evp.h 2014-09-09 16:12:25.855801651 +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-1.0.1e/crypto/evp/evp_lib.c.wrap openssl-1.0.1e/crypto/evp/evp_lib.c --- openssl-1.0.1e/crypto/evp/evp_lib.c.wrap 2014-09-09 16:11:24.104379372 +0200 +++ openssl-1.0.1e/crypto/evp/evp_lib.c 2014-09-09 16:12:25.855801651 +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-1.0.1e/crypto/evp/evp_test.c.wrap openssl-1.0.1e/crypto/evp/evp_test.c --- openssl-1.0.1e/crypto/evp/evp_test.c.wrap 2013-02-11 16:26:04.000000000 +0100 +++ openssl-1.0.1e/crypto/evp/evp_test.c 2014-09-09 16:12:25.856801673 +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-1.0.1e/crypto/evp/evptests.txt.wrap openssl-1.0.1e/crypto/evp/evptests.txt --- openssl-1.0.1e/crypto/evp/evptests.txt.wrap 2013-02-11 16:26:04.000000000 +0100 +++ openssl-1.0.1e/crypto/evp/evptests.txt 2014-09-09 16:12:25.856801673 +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-1.0.1e/crypto/modes/Makefile.wrap openssl-1.0.1e/crypto/modes/Makefile --- openssl-1.0.1e/crypto/modes/Makefile.wrap 2014-09-09 16:11:24.079378796 +0200 +++ openssl-1.0.1e/crypto/modes/Makefile 2014-09-09 16:12:25.856801673 +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-1.0.1e/crypto/modes/modes.h.wrap openssl-1.0.1e/crypto/modes/modes.h --- openssl-1.0.1e/crypto/modes/modes.h.wrap 2014-09-09 16:11:23.726370665 +0200 +++ openssl-1.0.1e/crypto/modes/modes.h 2014-09-09 16:12:25.857801695 +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-1.0.1e/crypto/modes/wrap128.c.wrap openssl-1.0.1e/crypto/modes/wrap128.c --- openssl-1.0.1e/crypto/modes/wrap128.c.wrap 2014-09-09 16:12:25.857801695 +0200 +++ openssl-1.0.1e/crypto/modes/wrap128.c 2014-09-09 16:12:25.857801695 +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 + +/** 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 == 0) + return 0; + + if (!iv) + iv = default_iv; + if (CRYPTO_memcmp(got_iv, iv, 8)) + { + OPENSSL_cleanse(out, ret); + return 0; + } + return ret; + } + +/** 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 + 7) / 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; + }