| #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 <openssl/bn.h> |
| #include <openssl/evp.h> |
| #include <openssl/dsa.h> |
| #include <openssl/asn1t.h> |
| #include <openssl/x509.h> |
| #include <openssl/engine.h> |
| #include <openssl/ec.h> |
| #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 |