420 lines
14 KiB
C
420 lines
14 KiB
C
#ifndef GOST_TOOLS_H
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# define GOST_TOOLS_H
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/**********************************************************************
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* gost_lcl.h *
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* Copyright (c) 2006 Cryptocom LTD *
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* Copyright (c) 2020 Vitaly Chikunov <vt@altlinux.org> *
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* This file is distributed under the same license as OpenSSL *
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* *
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* Internal declarations used in GOST engine *
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* OpenSSL 0.9.9 libraries required to compile and use *
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* this code *
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**********************************************************************/
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# include <openssl/core.h>
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# include <openssl/bn.h>
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# include <openssl/evp.h>
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# include <openssl/asn1t.h>
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# include <openssl/x509.h>
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# include <openssl/engine.h>
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# include <openssl/ec.h>
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# include <openssl/asn1.h>
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# include "gost89.h"
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# include "gosthash.h"
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/* Control commands */
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# define GOST_PARAM_CRYPT_PARAMS 0
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# define GOST_PARAM_PBE_PARAMS 1
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# define GOST_PARAM_PK_FORMAT 2
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# define GOST_PARAM_MAX 3
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# define GOST_CTRL_CRYPT_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_CRYPT_PARAMS)
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# define GOST_CTRL_PBE_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_PBE_PARAMS)
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# define GOST_CTRL_PK_FORMAT (ENGINE_CMD_BASE+GOST_PARAM_PK_FORMAT)
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typedef struct R3410_ec {
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int nid;
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char *a;
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char *b;
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char *p;
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char *q;
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char *x;
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char *y;
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char *cofactor;
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EC_GROUP *group;
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} R3410_ec_params;
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extern R3410_ec_params R3410_2001_paramset[],
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*R3410_2012_256_paramset, R3410_2012_512_paramset[];
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void free_cached_groups(void);
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extern const ENGINE_CMD_DEFN gost_cmds[];
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int gost_control_func(ENGINE *e, int cmd, long i, void *p, void (*f) (void));
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const char *get_gost_engine_param(int param);
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int gost_set_default_param(int param, const char *value);
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void gost_param_free(void);
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/* method registration */
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/* Provider implementation data */
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extern const OSSL_ALGORITHM GOST_prov_macs[];
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void GOST_prov_deinit_mac_digests(void);
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int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
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const char *pemstr, const char *info);
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int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth, int flags);
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/* Gost-specific pmeth control-function parameters */
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/* For GOST R34.10 parameters */
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# define param_ctrl_string "paramset"
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# define ukm_ctrl_string "ukmhex"
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# define vko_ctrl_string "vko"
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# define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1)
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/* For GOST 28147 MAC */
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# define key_ctrl_string "key"
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# define hexkey_ctrl_string "hexkey"
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# define maclen_ctrl_string "size"
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# define EVP_PKEY_CTRL_GOST_MAC_HEXKEY (EVP_PKEY_ALG_CTRL+3)
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# define EVP_PKEY_CTRL_MAC_LEN (EVP_PKEY_ALG_CTRL+5)
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# define EVP_PKEY_CTRL_SET_VKO (EVP_PKEY_ALG_CTRL+11)
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/* Pmeth internal representation */
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struct gost_pmeth_data {
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int sign_param_nid; /* Should be set whenever parameters are
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* filled */
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EVP_MD *md;
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unsigned char shared_ukm[32];
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size_t shared_ukm_size;
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int peer_key_used;
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int cipher_nid; /* KExp15/KImp15 algs */
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int vko_dgst_nid;
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};
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struct gost_mac_pmeth_data {
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short int key_set;
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short int mac_size;
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int mac_param_nid;
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EVP_MD *md;
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unsigned char key[32];
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};
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struct gost_mac_key {
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int mac_param_nid;
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unsigned char key[32];
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short int mac_size;
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};
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/* GOST-specific ASN1 structures */
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typedef struct {
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ASN1_OCTET_STRING *encrypted_key;
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ASN1_OCTET_STRING *imit;
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} GOST_KEY_INFO;
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DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO)
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typedef struct {
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ASN1_OBJECT *cipher;
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X509_PUBKEY *ephem_key;
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ASN1_OCTET_STRING *eph_iv;
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} GOST_KEY_AGREEMENT_INFO;
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DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO)
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typedef struct {
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GOST_KEY_INFO *key_info;
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GOST_KEY_AGREEMENT_INFO *key_agreement_info;
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} GOST_KEY_TRANSPORT;
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DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT)
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typedef struct { /* FIXME incomplete */
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GOST_KEY_TRANSPORT *gkt;
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} GOST_CLIENT_KEY_EXCHANGE_PARAMS;
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/* PSKeyTransport ::= SEQUENCE {
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PSEXP OCTET STRING,
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ephemeralPublicKey SubjectPublicKeyInfo
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}
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SubjectPublicKeyInfo ::= SEQUENCE {
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algorithm AlgorithmIdentifier,
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subjectPublicKey BITSTRING
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}
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AlgorithmIdentifier ::= SEQUENCE {
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algorithm OBJECT IDENTIFIER,
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parameters ANY OPTIONAL
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}*/
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typedef struct PSKeyTransport_st {
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ASN1_OCTET_STRING *psexp;
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X509_PUBKEY *ephem_key;
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ASN1_OCTET_STRING *ukm;
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} PSKeyTransport_gost;
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DECLARE_ASN1_FUNCTIONS(PSKeyTransport_gost)
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/*
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* Hacks to shorten symbols to 31 characters or less, or OpenVMS. This mimics
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* what's done in symhacks.h, but since this is a very local header file, I
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* prefered to put this hack directly here. -- Richard Levitte
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*/
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# ifdef OPENSSL_SYS_VMS
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# undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_it
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# define GOST_CLIENT_KEY_EXCHANGE_PARAMS_it GOST_CLIENT_KEY_EXC_PARAMS_it
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# undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_new
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# define GOST_CLIENT_KEY_EXCHANGE_PARAMS_new GOST_CLIENT_KEY_EXC_PARAMS_new
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# undef GOST_CLIENT_KEY_EXCHANGE_PARAMS_free
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# define GOST_CLIENT_KEY_EXCHANGE_PARAMS_free GOST_CLIENT_KEY_EXC_PARAMS_free
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# undef d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS
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# define d2i_GOST_CLIENT_KEY_EXCHANGE_PARAMS d2i_GOST_CLIENT_KEY_EXC_PARAMS
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# undef i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS
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# define i2d_GOST_CLIENT_KEY_EXCHANGE_PARAMS i2d_GOST_CLIENT_KEY_EXC_PARAMS
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# endif /* End of hack */
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DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
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typedef struct {
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ASN1_OBJECT *key_params;
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ASN1_OBJECT *hash_params;
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ASN1_OBJECT *cipher_params;
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} GOST_KEY_PARAMS;
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DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS)
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typedef struct {
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ASN1_OCTET_STRING *iv;
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ASN1_OBJECT *enc_param_set;
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} GOST_CIPHER_PARAMS;
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DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS)
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typedef struct {
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ASN1_OCTET_STRING *ukm;
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} GOST2015_CIPHER_PARAMS;
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DECLARE_ASN1_FUNCTIONS(GOST2015_CIPHER_PARAMS)
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typedef struct {
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ASN1_OCTET_STRING *masked_priv_key;
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ASN1_OCTET_STRING *public_key;
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} MASKED_GOST_KEY;
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DECLARE_ASN1_FUNCTIONS(MASKED_GOST_KEY)
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/*============== Message digest and cipher related structures ==========*/
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/*
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* Structure used as EVP_MD_CTX-md_data. It allows to avoid storing
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* in the md-data pointers to dynamically allocated memory. I
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* cannot invent better way to avoid memory leaks, because openssl
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* insist on invoking Init on Final-ed digests, and there is no
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* reliable way to find out whether pointer in the passed md_data is
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* valid or not.
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*/
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struct ossl_gost_digest_ctx {
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gost_hash_ctx dctx;
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gost_ctx cctx;
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};
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/* Cipher context used for EVP_CIPHER operation */
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struct ossl_gost_cipher_ctx {
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int paramNID;
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unsigned int count;
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int key_meshing;
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unsigned char kdf_seed[8];
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unsigned char tag[8];
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gost_ctx cctx;
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EVP_MD_CTX *omac_ctx;
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};
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/* Structure to map parameter NID to S-block */
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struct gost_cipher_info {
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int nid;
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gost_subst_block *sblock;
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int key_meshing;
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};
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/* Context for MAC */
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struct ossl_gost_imit_ctx {
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gost_ctx cctx;
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unsigned char buffer[8];
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unsigned char partial_block[8];
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unsigned int count;
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int key_meshing;
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int bytes_left;
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int key_set;
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int dgst_size;
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};
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/* Find encryption params from ASN1_OBJECT */
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const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj);
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void inc_counter(unsigned char *counter, size_t counter_bytes);
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# define EVP_MD_CTRL_KEY_LEN (EVP_MD_CTRL_ALG_CTRL+3)
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# define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+4)
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/* EVP_PKEY_METHOD key encryption callbacks */
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/* From gost_ec_keyx.c */
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int pkey_gost_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
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size_t *out_len, const unsigned char *key,
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size_t key_len);
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int pkey_gost_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
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size_t *key_len, const unsigned char *in,
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size_t in_len);
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/* derive functions */
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/* From gost_ec_keyx.c */
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int pkey_gost_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
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int fill_GOST_EC_params(EC_KEY *eckey, int nid);
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int gost_ec_keygen(EC_KEY *ec);
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ECDSA_SIG *gost_ec_sign(const unsigned char *dgst, int dlen, EC_KEY *eckey);
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int gost_ec_verify(const unsigned char *dgst, int dgst_len,
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ECDSA_SIG *sig, EC_KEY *ec);
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int gost_ec_compute_public(EC_KEY *ec);
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int gost_ec_point_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
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const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
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#define CURVEDEF(a) \
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int point_mul_##a(const EC_GROUP *group, EC_POINT *r, const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);\
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int point_mul_g_##a(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, BN_CTX *ctx);\
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int point_mul_two_##a(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
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CURVEDEF(id_GostR3410_2001_CryptoPro_A_ParamSet)
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CURVEDEF(id_GostR3410_2001_CryptoPro_B_ParamSet)
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CURVEDEF(id_GostR3410_2001_CryptoPro_C_ParamSet)
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CURVEDEF(id_GostR3410_2001_TestParamSet)
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CURVEDEF(id_tc26_gost_3410_2012_256_paramSetA)
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CURVEDEF(id_tc26_gost_3410_2012_512_paramSetA)
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CURVEDEF(id_tc26_gost_3410_2012_512_paramSetB)
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CURVEDEF(id_tc26_gost_3410_2012_512_paramSetC)
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/* VKO */
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int VKO_compute_key(unsigned char *shared_key,
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const EC_POINT *pub_key, const EC_KEY *priv_key,
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const unsigned char *ukm, const size_t ukm_size,
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const int vko_dgst_nid);
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/* KDF TREE */
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int gost_kdftree2012_256(unsigned char *keyout, size_t keyout_len,
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const unsigned char *key, size_t keylen,
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const unsigned char *label, size_t label_len,
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const unsigned char *seed, size_t seed_len,
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const size_t representation);
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int gost_tlstree(int cipher_nid, const unsigned char *in, unsigned char *out,
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const unsigned char *tlsseq);
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/* KExp/KImp */
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int gost_kexp15(const unsigned char *shared_key, const int shared_len,
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int cipher_nid, const unsigned char *cipher_key,
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int mac_nid, unsigned char *mac_key,
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const unsigned char *iv, const size_t ivlen,
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unsigned char *out, int *out_len);
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int gost_kimp15(const unsigned char *expkey, const size_t expkeylen,
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int cipher_nid, const unsigned char *cipher_key,
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int mac_nid, unsigned char *mac_key,
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const unsigned char *iv, const size_t ivlen,
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unsigned char *shared_key);
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/*============== miscellaneous functions============================= */
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/*
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* Store bignum in byte array of given length, prepending by zeros if
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* nesseccary
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*/
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int store_bignum(const BIGNUM *bn, unsigned char *buf, int len);
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/* Pack GOST R 34.10 signature according to CryptoPro rules */
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int pack_sign_cp(ECDSA_SIG *s, int order, unsigned char *sig, size_t *siglen);
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/* from ameth.c */
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/* Get private key as BIGNUM from both 34.10-2001 keys*/
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/* Returns pointer into EVP_PKEY structure */
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BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey);
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/* from gost_crypt.c */
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/* Decrements 8-byte sequence */
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int decrement_sequence(unsigned char *seq, int decrement);
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/* Struct describing cipher and used for init/deinit.*/
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struct gost_cipher_st {
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struct gost_cipher_st *template; /* template struct */
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int nid;
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EVP_CIPHER *cipher;
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int block_size; /* (bytes) */
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int key_len; /* (bytes) */
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int iv_len;
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int flags;
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int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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int (*cleanup)(EVP_CIPHER_CTX *);
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int ctx_size;
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int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
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int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *);
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int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
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};
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typedef struct gost_cipher_st GOST_cipher;
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EVP_CIPHER *GOST_init_cipher(GOST_cipher *c);
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void GOST_deinit_cipher(GOST_cipher *c);
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/* ENGINE implementation data */
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extern GOST_cipher Gost28147_89_cipher;
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extern GOST_cipher Gost28147_89_cbc_cipher;
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extern GOST_cipher Gost28147_89_cnt_cipher;
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extern GOST_cipher Gost28147_89_cnt_12_cipher;
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extern GOST_cipher magma_ctr_cipher;
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extern GOST_cipher magma_ctr_acpkm_cipher;
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extern GOST_cipher magma_ctr_acpkm_omac_cipher;
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extern GOST_cipher magma_ecb_cipher;
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extern GOST_cipher magma_cbc_cipher;
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extern GOST_cipher magma_mgm_cipher;
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extern GOST_cipher grasshopper_ecb_cipher;
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extern GOST_cipher grasshopper_cbc_cipher;
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extern GOST_cipher grasshopper_cfb_cipher;
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extern GOST_cipher grasshopper_ofb_cipher;
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extern GOST_cipher grasshopper_ctr_cipher;
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extern GOST_cipher grasshopper_mgm_cipher;
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extern GOST_cipher grasshopper_ctr_acpkm_cipher;
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extern GOST_cipher grasshopper_ctr_acpkm_omac_cipher;
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extern GOST_cipher magma_kexp15_cipher;
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extern GOST_cipher kuznyechik_kexp15_cipher;
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/* Provider implementation data */
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extern const OSSL_ALGORITHM GOST_prov_ciphers[];
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void GOST_prov_deinit_ciphers(void);
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struct gost_digest_st {
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struct gost_digest_st *template;
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int nid;
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const char *alias;
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EVP_MD *digest;
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int result_size;
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int input_blocksize;
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int app_datasize;
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int flags;
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int (*init)(EVP_MD_CTX *ctx);
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int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
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int (*final)(EVP_MD_CTX *ctx, unsigned char *md);
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int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from);
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int (*cleanup)(EVP_MD_CTX *ctx);
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int (*ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
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};
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typedef struct gost_digest_st GOST_digest;
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EVP_MD *GOST_init_digest(GOST_digest *d);
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void GOST_deinit_digest(GOST_digest *d);
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/* ENGINE implementation data */
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extern GOST_digest GostR3411_94_digest;
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extern GOST_digest Gost28147_89_MAC_digest;
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extern GOST_digest Gost28147_89_mac_12_digest;
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extern GOST_digest GostR3411_2012_256_digest;
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extern GOST_digest GostR3411_2012_512_digest;
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extern GOST_digest magma_mac_digest;
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extern GOST_digest grasshopper_mac_digest;
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extern GOST_digest kuznyechik_ctracpkm_omac_digest;
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/* Provider implementation data */
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extern const OSSL_ALGORITHM GOST_prov_digests[];
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void GOST_prov_deinit_digests(void);
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/* job to initialize a missing NID */
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struct gost_nid_job {
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const char *sn;
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const char *ln;
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void (*callback)(int nid);
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ASN1_OBJECT *asn1;
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};
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typedef struct gost_nid_job GOST_NID_JOB;
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extern GOST_NID_JOB magma_mgm_NID;
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extern GOST_NID_JOB kuznyechik_mgm_NID;
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#endif
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/* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */
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