diff options
Diffstat (limited to 'deps/openssl/openssl/engines/ccgost/gost2001_keyx.c')
| -rw-r--r-- | deps/openssl/openssl/engines/ccgost/gost2001_keyx.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/deps/openssl/openssl/engines/ccgost/gost2001_keyx.c b/deps/openssl/openssl/engines/ccgost/gost2001_keyx.c deleted file mode 100644 index ac7862eab5..0000000000 --- a/deps/openssl/openssl/engines/ccgost/gost2001_keyx.c +++ /dev/null @@ -1,294 +0,0 @@ -/********************************************************************** - * gost_keyx.c * - * Copyright (c) 2005-2006 Cryptocom LTD * - * This file is distributed under the same license as OpenSSL * - * * - * VK0 34.10-2001 key exchange and GOST R 34.10-2001 * - * based PKCS7/SMIME support * - * Requires OpenSSL 0.9.9 for compilation * - **********************************************************************/ -#include <openssl/evp.h> -#include <openssl/rand.h> -#include <string.h> -#include <openssl/objects.h> -#include "gost89.h" -#include "gosthash.h" -#include "e_gost_err.h" -#include "gost_keywrap.h" -#include "gost_lcl.h" -#include "gost2001_keyx.h" - -/* Implementation of CryptoPro VKO 34.10-2001 algorithm */ -static int VKO_compute_key(unsigned char *shared_key, size_t shared_key_size, - const EC_POINT *pub_key, EC_KEY *priv_key, - const unsigned char *ukm) -{ - unsigned char ukm_be[8], databuf[64], hashbuf[64]; - BIGNUM *UKM = NULL, *p = NULL, *order = NULL, *X = NULL, *Y = NULL; - const BIGNUM *key = EC_KEY_get0_private_key(priv_key); - EC_POINT *pnt = EC_POINT_new(EC_KEY_get0_group(priv_key)); - int i; - gost_hash_ctx hash_ctx; - BN_CTX *ctx = BN_CTX_new(); - - for (i = 0; i < 8; i++) { - ukm_be[7 - i] = ukm[i]; - } - BN_CTX_start(ctx); - UKM = getbnfrombuf(ukm_be, 8); - p = BN_CTX_get(ctx); - order = BN_CTX_get(ctx); - X = BN_CTX_get(ctx); - Y = BN_CTX_get(ctx); - EC_GROUP_get_order(EC_KEY_get0_group(priv_key), order, ctx); - BN_mod_mul(p, key, UKM, order, ctx); - EC_POINT_mul(EC_KEY_get0_group(priv_key), pnt, NULL, pub_key, p, ctx); - EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(priv_key), - pnt, X, Y, ctx); - /* - * Serialize elliptic curve point same way as we do it when saving key - */ - store_bignum(Y, databuf, 32); - store_bignum(X, databuf + 32, 32); - /* And reverse byte order of whole buffer */ - for (i = 0; i < 64; i++) { - hashbuf[63 - i] = databuf[i]; - } - init_gost_hash_ctx(&hash_ctx, &GostR3411_94_CryptoProParamSet); - start_hash(&hash_ctx); - hash_block(&hash_ctx, hashbuf, 64); - finish_hash(&hash_ctx, shared_key); - done_gost_hash_ctx(&hash_ctx); - BN_free(UKM); - BN_CTX_end(ctx); - BN_CTX_free(ctx); - EC_POINT_free(pnt); - return 32; -} - -/* - * EVP_PKEY_METHOD callback derive. Implements VKO R 34.10-2001 - * algorithm - */ -int pkey_gost2001_derive(EVP_PKEY_CTX *ctx, unsigned char *key, - size_t *keylen) -{ - /* - * Public key of peer in the ctx field peerkey Our private key in the ctx - * pkey ukm is in the algorithm specific context data - */ - EVP_PKEY *my_key = EVP_PKEY_CTX_get0_pkey(ctx); - EVP_PKEY *peer_key = EVP_PKEY_CTX_get0_peerkey(ctx); - struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx); - - if (!data->shared_ukm) { - GOSTerr(GOST_F_PKEY_GOST2001_DERIVE, GOST_R_UKM_NOT_SET); - return 0; - } - - if (key == NULL) { - *keylen = 32; - return 32; - } - - *keylen = - VKO_compute_key(key, 32, - EC_KEY_get0_public_key(EVP_PKEY_get0(peer_key)), - (EC_KEY *)EVP_PKEY_get0(my_key), data->shared_ukm); - return 1; -} - -/* - * EVP_PKEY_METHOD callback encrypt - * Implementation of GOST2001 key transport, cryptocom variation - */ -/* - * Generates ephemeral key based on pubk algorithm computes shared key using - * VKO and returns filled up GOST_KEY_TRANSPORT structure - */ - -/* - * EVP_PKEY_METHOD callback encrypt - * Implementation of GOST2001 key transport, cryptopo variation - */ - -int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out, - size_t *out_len, const unsigned char *key, - size_t key_len) -{ - GOST_KEY_TRANSPORT *gkt = NULL; - EVP_PKEY *pubk = EVP_PKEY_CTX_get0_pkey(pctx); - struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(pctx); - const struct gost_cipher_info *param = get_encryption_params(NULL); - unsigned char ukm[8], shared_key[32], crypted_key[44]; - int ret = 0; - int key_is_ephemeral = 1; - gost_ctx cctx; - EVP_PKEY *sec_key = EVP_PKEY_CTX_get0_peerkey(pctx); - if (data->shared_ukm) { - memcpy(ukm, data->shared_ukm, 8); - } else if (out) { - - if (RAND_bytes(ukm, 8) <= 0) { - GOSTerr(GOST_F_PKEY_GOST01CP_ENCRYPT, - GOST_R_RANDOM_GENERATOR_FAILURE); - return 0; - } - } - /* Check for private key in the peer_key of context */ - if (sec_key) { - key_is_ephemeral = 0; - if (!gost_get0_priv_key(sec_key)) { - GOSTerr(GOST_F_PKEY_GOST01CP_ENCRYPT, - GOST_R_NO_PRIVATE_PART_OF_NON_EPHEMERAL_KEYPAIR); - goto err; - } - } else { - key_is_ephemeral = 1; - if (out) { - sec_key = EVP_PKEY_new(); - if (sec_key == NULL) - goto err; - EVP_PKEY_assign(sec_key, EVP_PKEY_base_id(pubk), EC_KEY_new()); - EVP_PKEY_copy_parameters(sec_key, pubk); - if (!gost2001_keygen(EVP_PKEY_get0(sec_key))) { - goto err; - } - } - } - if (!get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS) - && param == gost_cipher_list) { - param = gost_cipher_list + 1; - } - if (out) { - VKO_compute_key(shared_key, 32, - EC_KEY_get0_public_key(EVP_PKEY_get0(pubk)), - EVP_PKEY_get0(sec_key), ukm); - gost_init(&cctx, param->sblock); - keyWrapCryptoPro(&cctx, shared_key, ukm, key, crypted_key); - } - gkt = GOST_KEY_TRANSPORT_new(); - if (!gkt) { - goto err; - } - if (!ASN1_OCTET_STRING_set(gkt->key_agreement_info->eph_iv, ukm, 8)) { - goto err; - } - if (!ASN1_OCTET_STRING_set(gkt->key_info->imit, crypted_key + 40, 4)) { - goto err; - } - if (!ASN1_OCTET_STRING_set - (gkt->key_info->encrypted_key, crypted_key + 8, 32)) { - goto err; - } - if (key_is_ephemeral) { - if (!X509_PUBKEY_set - (&gkt->key_agreement_info->ephem_key, out ? sec_key : pubk)) { - GOSTerr(GOST_F_PKEY_GOST01CP_ENCRYPT, - GOST_R_CANNOT_PACK_EPHEMERAL_KEY); - goto err; - } - } - ASN1_OBJECT_free(gkt->key_agreement_info->cipher); - gkt->key_agreement_info->cipher = OBJ_nid2obj(param->nid); - if (key_is_ephemeral && sec_key) - EVP_PKEY_free(sec_key); - if (!key_is_ephemeral) { - /* Set control "public key from client certificate used" */ - if (EVP_PKEY_CTX_ctrl(pctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 3, NULL) - <= 0) { - GOSTerr(GOST_F_PKEY_GOST01CP_ENCRYPT, GOST_R_CTRL_CALL_FAILED); - goto err; - } - } - if ((*out_len = i2d_GOST_KEY_TRANSPORT(gkt, out ? &out : NULL)) > 0) - ret = 1; - GOST_KEY_TRANSPORT_free(gkt); - return ret; - err: - if (key_is_ephemeral && sec_key) - EVP_PKEY_free(sec_key); - GOST_KEY_TRANSPORT_free(gkt); - return -1; -} - -/* - * EVP_PKEY_METHOD callback decrypt - * Implementation of GOST2001 key transport, cryptopo variation - */ -int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key, - size_t *key_len, const unsigned char *in, - size_t in_len) -{ - const unsigned char *p = in; - EVP_PKEY *priv = EVP_PKEY_CTX_get0_pkey(pctx); - GOST_KEY_TRANSPORT *gkt = NULL; - int ret = 0; - unsigned char wrappedKey[44]; - unsigned char sharedKey[32]; - gost_ctx ctx; - const struct gost_cipher_info *param = NULL; - EVP_PKEY *eph_key = NULL, *peerkey = NULL; - - if (!key) { - *key_len = 32; - return 1; - } - gkt = d2i_GOST_KEY_TRANSPORT(NULL, (const unsigned char **)&p, in_len); - if (!gkt) { - GOSTerr(GOST_F_PKEY_GOST01CP_DECRYPT, - GOST_R_ERROR_PARSING_KEY_TRANSPORT_INFO); - return -1; - } - - /* If key transport structure contains public key, use it */ - eph_key = X509_PUBKEY_get(gkt->key_agreement_info->ephem_key); - if (eph_key) { - if (EVP_PKEY_derive_set_peer(pctx, eph_key) <= 0) { - GOSTerr(GOST_F_PKEY_GOST01CP_DECRYPT, - GOST_R_INCOMPATIBLE_PEER_KEY); - goto err; - } - } else { - /* Set control "public key from client certificate used" */ - if (EVP_PKEY_CTX_ctrl(pctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 3, NULL) - <= 0) { - GOSTerr(GOST_F_PKEY_GOST01CP_DECRYPT, GOST_R_CTRL_CALL_FAILED); - goto err; - } - } - peerkey = EVP_PKEY_CTX_get0_peerkey(pctx); - if (!peerkey) { - GOSTerr(GOST_F_PKEY_GOST01CP_DECRYPT, GOST_R_NO_PEER_KEY); - goto err; - } - - param = get_encryption_params(gkt->key_agreement_info->cipher); - if (!param) { - goto err; - } - - gost_init(&ctx, param->sblock); - OPENSSL_assert(gkt->key_agreement_info->eph_iv->length == 8); - memcpy(wrappedKey, gkt->key_agreement_info->eph_iv->data, 8); - OPENSSL_assert(gkt->key_info->encrypted_key->length == 32); - memcpy(wrappedKey + 8, gkt->key_info->encrypted_key->data, 32); - OPENSSL_assert(gkt->key_info->imit->length == 4); - memcpy(wrappedKey + 40, gkt->key_info->imit->data, 4); - VKO_compute_key(sharedKey, 32, - EC_KEY_get0_public_key(EVP_PKEY_get0(peerkey)), - EVP_PKEY_get0(priv), wrappedKey); - if (!keyUnwrapCryptoPro(&ctx, sharedKey, wrappedKey, key)) { - GOSTerr(GOST_F_PKEY_GOST01CP_DECRYPT, - GOST_R_ERROR_COMPUTING_SHARED_KEY); - goto err; - } - - ret = 1; - err: - if (eph_key) - EVP_PKEY_free(eph_key); - if (gkt) - GOST_KEY_TRANSPORT_free(gkt); - return ret; -} |