#ifndef GOST_TOOLS_H # define GOST_TOOLS_H /********************************************************************** * gost_lcl.h * * Copyright (c) 2006 Cryptocom LTD * * This file is distributed under the same license as OpenSSL * * * * Internal declarations used in GOST engine * * OpenSSL 0.9.9 libraries required to compile and use * * this code * **********************************************************************/ # include # include # include # include # include # include # include # include "gost89.h" # include "gosthash.h" /* Control commands */ # define GOST_PARAM_CRYPT_PARAMS 0 # define GOST_PARAM_MAX 0 # define GOST_CTRL_CRYPT_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_CRYPT_PARAMS) extern const ENGINE_CMD_DEFN gost_cmds[]; int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void)); const char *get_gost_engine_param(int param); int gost_set_default_param(int param, const char *value); void gost_param_free(void); /* method registration */ int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth, const char *pemstr, const char *info); int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth, int flags); /* Gost-specific pmeth control-function parameters */ /* For GOST R34.10 parameters */ # define param_ctrl_string "paramset" # define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1) /* For GOST 28147 MAC */ # define key_ctrl_string "key" # define hexkey_ctrl_string "hexkey" # define EVP_PKEY_CTRL_GOST_MAC_HEXKEY (EVP_PKEY_ALG_CTRL+3) /* Pmeth internal representation */ struct gost_pmeth_data { int sign_param_nid; /* Should be set whenever parameters are * filled */ EVP_MD *md; unsigned char *shared_ukm; int peer_key_used; }; struct gost_mac_pmeth_data { int key_set; EVP_MD *md; unsigned char key[32]; }; /* GOST-specific ASN1 structures */ typedef struct { ASN1_OCTET_STRING *encrypted_key; ASN1_OCTET_STRING *imit; } GOST_KEY_INFO; DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO) typedef struct { ASN1_OBJECT *cipher; X509_PUBKEY *ephem_key; ASN1_OCTET_STRING *eph_iv; } GOST_KEY_AGREEMENT_INFO; DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO) typedef struct { GOST_KEY_INFO *key_info; GOST_KEY_AGREEMENT_INFO *key_agreement_info; } GOST_KEY_TRANSPORT; DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT) typedef struct { /* FIXME incomplete */ GOST_KEY_TRANSPORT *gkt; } GOST_CLIENT_KEY_EXCHANGE_PARAMS; /* * Hacks to shorten symbols to 31 characters or less, or OpenVMS. This mimics * what's done in symhacks.h, but since this is a very local header file, I * prefered to put this hack directly here. -- Richard Levitte */ # ifdef OPENSSL_SYS_VMS # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_it # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_it GOST_CLIENT_KEY_EXC_PARAMS_it # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_new # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_new GOST_CLIENT_KEY_EXC_PARAMS_new # undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_free # define GOST_CLIENT_KEY_EXCHANGE_PARAMS_free GOST_CLIENT_KEY_EXC_PARAMS_free # undef d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS # define d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS d2i_GOST_CLIENT_KEY_EXC_PARAMS # undef i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS # define i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS i2d_GOST_CLIENT_KEY_EXC_PARAMS # endif /* End of hack */ DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS) typedef struct { ASN1_OBJECT *key_params; ASN1_OBJECT *hash_params; ASN1_OBJECT *cipher_params; } GOST_KEY_PARAMS; DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS) typedef struct { ASN1_OCTET_STRING *iv; ASN1_OBJECT *enc_param_set; } GOST_CIPHER_PARAMS; DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS) /*============== Message digest and cipher related structures ==========*/ /* * Structure used as EVP_MD_CTX-md_data. It allows to avoid storing * in the md-data pointers to dynamically allocated memory. I * cannot invent better way to avoid memory leaks, because openssl * insist on invoking Init on Final-ed digests, and there is no * reliable way to find out whether pointer in the passed md_data is * valid or not. */ struct ossl_gost_digest_ctx { gost_hash_ctx dctx; gost_ctx cctx; }; /* EVP_MD structure for GOST R 34.11 */ extern EVP_MD digest_gost; /* EVP_MD structure for GOST 28147 in MAC mode */ extern EVP_MD imit_gost_cpa; /* Cipher context used for EVP_CIPHER operation */ struct ossl_gost_cipher_ctx { int paramNID; unsigned int count; int key_meshing; gost_ctx cctx; }; /* Structure to map parameter NID to S-block */ struct gost_cipher_info { int nid; gost_subst_block *sblock; int key_meshing; }; /* Context for MAC */ struct ossl_gost_imit_ctx { gost_ctx cctx; unsigned char buffer[8]; unsigned char partial_block[8]; unsigned int count; int key_meshing; int bytes_left; int key_set; }; /* Table which maps parameter NID to S-blocks */ extern struct gost_cipher_info gost_cipher_list[]; /* Find encryption params from ASN1_OBJECT */ const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj); /* Implementation of GOST 28147-89 cipher in CFB and CNT modes */ extern EVP_CIPHER cipher_gost; extern EVP_CIPHER cipher_gost_cpacnt; # define EVP_MD_CTRL_KEY_LEN (EVP_MD_CTRL_ALG_CTRL+3) # define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+4) /* EVP_PKEY_METHOD key encryption callbacks */ /* From gost94_keyx.c */ int pkey_GOST94cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char *key, size_t key_len); int pkey_GOST94cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char *in, size_t in_len); /* From gost2001_keyx.c */ int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char *key, size_t key_len); int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char *in, size_t in_len); /* derive functions */ /* From gost2001_keyx.c */ int pkey_gost2001_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen); /* From gost94_keyx.c */ int pkey_gost94_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen); /* Internal functions for signature algorithms */ int fill_GOST94_params(DSA *dsa, int nid); int fill_GOST2001_params(EC_KEY *eckey, int nid); int gost_sign_keygen(DSA *dsa); int gost2001_keygen(EC_KEY *ec); DSA_SIG *gost_do_sign(const unsigned char *dgst, int dlen, DSA *dsa); DSA_SIG *gost2001_do_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey); int gost_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig, DSA *dsa); int gost2001_do_verify(const unsigned char *dgst, int dgst_len, DSA_SIG *sig, EC_KEY *ec); int gost2001_compute_public(EC_KEY *ec); int gost94_compute_public(DSA *dsa); /*============== miscellaneous functions============================= */ /* from gost_sign.c */ /* Convert GOST R 34.11 hash sum to bignum according to standard */ BIGNUM *hashsum2bn(const unsigned char *dgst); /* * Store bignum in byte array of given length, prepending by zeros if * nesseccary */ int store_bignum(BIGNUM *bn, unsigned char *buf, int len); /* Read bignum, which can have few MSB all-zeros from buffer*/ BIGNUM *getbnfrombuf(const unsigned char *buf, size_t len); /* Pack GOST R 34.10 signature according to CryptoPro rules */ int pack_sign_cp(DSA_SIG *s, int order, unsigned char *sig, size_t *siglen); /* Unpack GOST R 34.10 signature according to CryptoPro rules */ DSA_SIG *unpack_cp_signature(const unsigned char *sig, size_t siglen); /* from ameth.c */ /* Get private key as BIGNUM from both R 34.10-94 and R 34.10-2001 keys*/ /* Returns pointer into EVP_PKEY structure */ BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey); /* Find NID by GOST 94 parameters */ int gost94_nid_by_params(DSA *p); #endif