gost_gost2015.h

   1 /*
   2  * Copyright (c) 2020 Dmitry Belyavskiy <beldmit@gmail.com>
   3  *
   4  * Contents licensed under the terms of the OpenSSL license
   5  * See https://www.openssl.org/source/license.html for details
   6  */
   7 #ifndef GOST_GOST2015_H
   8 #define GOST_GOST2015_H
   9
  10 #include <openssl/evp.h>
  11 #include <openssl/x509.h>
  12
  13 #define MAGMA_MAC_MAX_SIZE 8
  14 #define KUZNYECHIK_MAC_MAX_SIZE 16
  15 #define OID_GOST_CMS_MAC "1.2.643.7.1.0.6.1.1"
  16
  17 int gost2015_final_call(EVP_CIPHER_CTX *ctx, EVP_MD_CTX *omac_ctx, size_t mac_size,
  18                         unsigned char *encrypted_mac,
  19                         int (*do_cipher) (EVP_CIPHER_CTX *ctx,
  20                                 unsigned char *out,
  21                                 const unsigned char *in,
  22                                 size_t inl));
  23
  24 /* IV is expected to be 16 bytes*/
  25 int gost2015_get_asn1_params(const ASN1_TYPE *params, size_t ukm_size,
  26         unsigned char *iv, size_t ukm_offset, unsigned char *kdf_seed);
  27
  28 int gost2015_set_asn1_params(ASN1_TYPE *params,
  29         const unsigned char *iv, size_t iv_size, const unsigned char *kdf_seed);
  30
  31 int gost2015_process_unprotected_attributes(STACK_OF(X509_ATTRIBUTE) *attrs,
  32             int encryption, size_t mac_len, unsigned char *final_tag);
  33
  34 int gost2015_acpkm_omac_init(int nid, int enc, const unsigned char *inkey,
  35                              EVP_MD_CTX *omac_ctx,
  36                              unsigned char *outkey, unsigned char *kdf_seed);
  37 int init_zero_kdf_seed(unsigned char *kdf_seed);
  38
  39 #endif