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(); 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) 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) EVP_PKEY_free(sec_key); GOST_KEY_TRANSPORT_free(gkt); return -1; }
int pkey_GOST94cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len ) { GOST_KEY_TRANSPORT *gkt=NULL; unsigned char shared_key[32], ukm[8],crypted_key[44]; const struct gost_cipher_info *param=get_encryption_params(NULL); EVP_PKEY *pubk = EVP_PKEY_CTX_get0_pkey(ctx); struct gost_pmeth_data *data = (gost_pmeth_data*)EVP_PKEY_CTX_get_data(ctx); gost_ctx cctx; int key_is_ephemeral=1; EVP_PKEY *mykey = EVP_PKEY_CTX_get0_peerkey(ctx); /* Do not use vizir cipher parameters with cryptopro */ if (!get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS) && param == gost_cipher_list) { param= gost_cipher_list+1; } if (mykey) { /* If key already set, it is not ephemeral */ key_is_ephemeral=0; if (!gost_get0_priv_key(mykey)) { GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT, GOST_R_NO_PRIVATE_PART_OF_NON_EPHEMERAL_KEYPAIR); goto err; } } else { /* Otherwise generate ephemeral key */ key_is_ephemeral = 1; if (out) { mykey = EVP_PKEY_new(); EVP_PKEY_assign(mykey, EVP_PKEY_base_id(pubk),DSA_new()); EVP_PKEY_copy_parameters(mykey,pubk); if (!gost_sign_keygen((DSA*)EVP_PKEY_get0(mykey))) { goto err; } } } if (out) make_cp_exchange_key(gost_get0_priv_key(mykey),pubk,shared_key); if (data->shared_ukm) { TINYCLR_SSL_MEMCPY(ukm,data->shared_ukm,8); } else if (out) { if (RAND_bytes(ukm,8)<=0) { GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT, GOST_R_RANDOM_GENERATOR_FAILURE); goto err; } } if (out) { gost_init(&cctx,param->sblock); keyWrapCryptoPro(&cctx,shared_key,ukm,key,crypted_key); } gkt = GOST_KEY_TRANSPORT_new(); if (!gkt) { goto memerr; } if(!ASN1_OCTET_STRING_set(gkt->key_agreement_info->eph_iv, ukm,8)) { goto memerr; } if (!ASN1_OCTET_STRING_set(gkt->key_info->imit,crypted_key+40,4)) { goto memerr; } if (!ASN1_OCTET_STRING_set(gkt->key_info->encrypted_key,crypted_key+8,32)) { goto memerr; } if (key_is_ephemeral) { if (!X509_PUBKEY_set(&gkt->key_agreement_info->ephem_key,out?mykey:pubk)) { GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT,GOST_R_CANNOT_PACK_EPHEMERAL_KEY); goto err; } if (out) EVP_PKEY_free(mykey); } ASN1_OBJECT_free(gkt->key_agreement_info->cipher); gkt->key_agreement_info->cipher = OBJ_nid2obj(param->nid); *outlen = i2d_GOST_KEY_TRANSPORT(gkt,out?&out:NULL); if (*outlen == 0) { GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT,GOST_R_ERROR_PACKING_KEY_TRANSPORT_INFO); goto err; } if (!key_is_ephemeral) { /* Set control "public key from client certificate used" */ if (EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 3, NULL) <= 0) { GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT, GOST_R_CTRL_CALL_FAILED); goto err; } } GOST_KEY_TRANSPORT_free(gkt); return 1; memerr: if (key_is_ephemeral) { EVP_PKEY_free(mykey); } GOSTerr(GOST_F_PKEY_GOST94CP_ENCRYPT, GOST_R_MALLOC_FAILURE); err: GOST_KEY_TRANSPORT_free(gkt); return -1; }