X-Git-Url: http://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_keyexpimp.c;h=6df1b2a6168246b74f0fd26a1bb1522bd8a50d76;hb=79c7bd611a48915dfc1e4796a38309120ce2dd39;hp=bfdefbcaf515f2df9aa09d4100f1470ec69d0a63;hpb=3b27d50d79a9e7bdf3a98910c951c323ce41d6d5;p=openssl-gost%2Fengine.git diff --git a/gost_keyexpimp.c b/gost_keyexpimp.c index bfdefbc..6df1b2a 100644 --- a/gost_keyexpimp.c +++ b/gost_keyexpimp.c @@ -6,6 +6,7 @@ #include "gost_lcl.h" #include "e_gost_err.h" +int omac_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr); /* * Function expects that out is a preallocated buffer of length * defined as sum of shared_len and mac length defined by mac_nid @@ -44,8 +45,8 @@ int gost_kexp15(const unsigned char *shared_key, const int shared_len, } if (EVP_DigestInit_ex(mac, EVP_get_digestbynid(mac_nid), NULL) <= 0 - || EVP_MD_CTX_ctrl(mac, EVP_MD_CTRL_SET_KEY, 32, mac_key) <= 0 - || EVP_MD_CTX_ctrl(mac, EVP_MD_CTRL_MAC_LEN, mac_len, NULL) <= 0 + || omac_imit_ctrl(mac, EVP_MD_CTRL_SET_KEY, 32, mac_key) <= 0 + || omac_imit_ctrl(mac, EVP_MD_CTRL_MAC_LEN, mac_len, NULL) <= 0 || EVP_DigestUpdate(mac, iv, ivlen) <= 0 || EVP_DigestUpdate(mac, shared_key, shared_len) <= 0 /* As we set MAC length directly, we should not allow overwriting it */ @@ -82,14 +83,19 @@ int gost_kexp15(const unsigned char *shared_key, const int shared_len, return ret; } +/* + * Function expects that shared_key is a preallocated buffer + * with length defined as expkeylen + mac_len defined by mac_nid + * */ int gost_kimp15(const unsigned char *expkey, const size_t expkeylen, int cipher_nid, const unsigned char *cipher_key, int mac_nid, unsigned char *mac_key, const unsigned char *iv, const size_t ivlen, - unsigned char *shared_key, size_t shared_len) + unsigned char *shared_key) { unsigned char iv_full[16], out[48], mac_buf[16]; unsigned int mac_len; + const size_t shared_len = 32; EVP_CIPHER_CTX *ciph = NULL; EVP_MD_CTX *mac = NULL; @@ -132,8 +138,8 @@ int gost_kimp15(const unsigned char *expkey, const size_t expkeylen, } if (EVP_DigestInit_ex(mac, EVP_get_digestbynid(mac_nid), NULL) <= 0 - || EVP_MD_CTX_ctrl(mac, EVP_MD_CTRL_SET_KEY, 32, mac_key) <= 0 - || EVP_MD_CTX_ctrl(mac, EVP_MD_CTRL_MAC_LEN, mac_len, NULL) <= 0 + || omac_imit_ctrl(mac, EVP_MD_CTRL_SET_KEY, 32, mac_key) <= 0 + || omac_imit_ctrl(mac, EVP_MD_CTRL_MAC_LEN, mac_len, NULL) <= 0 || EVP_DigestUpdate(mac, iv, ivlen) <= 0 || EVP_DigestUpdate(mac, out, shared_len) <= 0 /* As we set MAC length directly, we should not allow overwriting it */ @@ -217,124 +223,51 @@ int gost_kdftree2012_256(unsigned char *keyout, size_t keyout_len, return 1; } -#ifdef ENABLE_UNIT_TESTS -# include -# include -# include - -static void hexdump(FILE *f, const char *title, const unsigned char *s, int l) +int gost_tlstree(int cipher_nid, const unsigned char *in, unsigned char *out, + const unsigned char *tlsseq) { - int n = 0; - - fprintf(f, "%s", title); - for (; n < l; ++n) { - if ((n % 16) == 0) - fprintf(f, "\n%04x", n); - fprintf(f, " %02x", s[n]); - } - fprintf(f, "\n"); -} - -int main(void) -{ - const unsigned char shared_key[] = { - 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, - 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, - 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10, - 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF - }; - - const unsigned char magma_key[] = { - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, - 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, - }; - - unsigned char mac_magma_key[] = { - 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, - }; - - const unsigned char magma_iv[] = { 0x67, 0xBE, 0xD6, 0x54 }; - - const unsigned char magma_export[] = { - 0xCF, 0xD5, 0xA1, 0x2D, 0x5B, 0x81, 0xB6, 0xE1, - 0xE9, 0x9C, 0x91, 0x6D, 0x07, 0x90, 0x0C, 0x6A, - 0xC1, 0x27, 0x03, 0xFB, 0x3A, 0xBD, 0xED, 0x55, - 0x56, 0x7B, 0xF3, 0x74, 0x2C, 0x89, 0x9C, 0x75, - 0x5D, 0xAF, 0xE7, 0xB4, 0x2E, 0x3A, 0x8B, 0xD9 - }; - - unsigned char kdftree_key[] = { - 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, - }; - - unsigned char kdf_label[] = { 0x26, 0xBD, 0xB8, 0x78 }; - unsigned char kdf_seed[] = - { 0xAF, 0x21, 0x43, 0x41, 0x45, 0x65, 0x63, 0x78 }; - const unsigned char kdf_etalon[] = { - 0x22, 0xB6, 0x83, 0x78, 0x45, 0xC6, 0xBE, 0xF6, - 0x5E, 0xA7, 0x16, 0x72, 0xB2, 0x65, 0x83, 0x10, - 0x86, 0xD3, 0xC7, 0x6A, 0xEB, 0xE6, 0xDA, 0xE9, - 0x1C, 0xAD, 0x51, 0xD8, 0x3F, 0x79, 0xD1, 0x6B, - 0x07, 0x4C, 0x93, 0x30, 0x59, 0x9D, 0x7F, 0x8D, - 0x71, 0x2F, 0xCA, 0x54, 0x39, 0x2F, 0x4D, 0xDD, - 0xE9, 0x37, 0x51, 0x20, 0x6B, 0x35, 0x84, 0xC8, - 0xF4, 0x3F, 0x9E, 0x6D, 0xC5, 0x15, 0x31, 0xF9 - }; - - unsigned char buf[32 + 16]; - int ret = 0; - int outlen = 40; - unsigned char kdf_result[64]; - - OpenSSL_add_all_algorithms(); - memset(buf, 0, sizeof(buf)); - - ret = gost_kexp15(shared_key, 32, - NID_magma_ctr, magma_key, - NID_magma_mac, mac_magma_key, magma_iv, 4, buf, &outlen); - - if (ret <= 0) - ERR_print_errors_fp(stderr); - else { - hexdump(stdout, "Magma key export", buf, 40); - if (memcmp(buf, magma_export, 40) != 0) { - fprintf(stdout, "ERROR! test failed\n"); - } - } - - ret = gost_kimp15(magma_export, 40, - NID_magma_ctr, magma_key, - NID_magma_mac, mac_magma_key, magma_iv, 4, buf, 32); - - if (ret <= 0) - ERR_print_errors_fp(stderr); - else { - hexdump(stdout, "Magma key import", buf, 32); - if (memcmp(buf, shared_key, 32) != 0) { - fprintf(stdout, "ERROR! test failed\n"); - } - } - - ret = gost_kdftree2012_256(kdf_result, 64, kdftree_key, 32, kdf_label, 4, - kdf_seed, 8, 1); - if (ret <= 0) - ERR_print_errors_fp(stderr); - else { - hexdump(stdout, "KDF TREE", kdf_result, 64); - if (memcmp(kdf_result, kdf_etalon, 64) != 0) { - fprintf(stdout, "ERROR! test failed\n"); - } +#ifndef L_ENDIAN + uint64_t gh_c1 = 0xFFFFFFFF00000000, gh_c2 = 0xFFFFFFFFFFF80000, + gh_c3 = 0xFFFFFFFFFFFFFFC0; + uint64_t mg_c1 = 0xFFFFFFC000000000, mg_c2 = 0xFFFFFFFFFE000000, + mg_c3 = 0xFFFFFFFFFFFFF000; +#else + uint64_t gh_c1 = 0x00000000FFFFFFFF, gh_c2 = 0x0000F8FFFFFFFFFF, + gh_c3 = 0xC0FFFFFFFFFFFFFF; + uint64_t mg_c1 = 0x00000000C0FFFFFF, mg_c2 = 0x000000FEFFFFFFFF, + mg_c3 = 0x00F0FFFFFFFFFFFF; +#endif + uint64_t c1, c2, c3; + uint64_t seed1, seed2, seed3; + uint64_t seq; + unsigned char ko1[32], ko2[32]; + + switch (cipher_nid) { + case NID_magma_cbc: + c1 = mg_c1; + c2 = mg_c2; + c3 = mg_c3; + break; + case NID_grasshopper_cbc: + c1 = gh_c1; + c2 = gh_c2; + c3 = gh_c3; + break; + default: + return 0; } + memcpy(&seq, tlsseq, 8); + seed1 = seq & c1; + seed2 = seq & c2; + seed3 = seq & c3; + + if (gost_kdftree2012_256(ko1, 32, in, 32, (const unsigned char *)"level1", 6, + (const unsigned char *)&seed1, 8, 1) <= 0 + || gost_kdftree2012_256(ko2, 32, ko1, 32, (const unsigned char *)"level2", 6, + (const unsigned char *)&seed2, 8, 1) <= 0 + || gost_kdftree2012_256(out, 32, ko2, 32, (const unsigned char *)"level3", 6, + (const unsigned char *)&seed3, 8, 1) <= 0) + return 0; - return 0; + return 1; } - -#endif