src/third_party/openssl/openssl/engines/ccgost/gost_lcl.h - cobalt - Git at Google

 #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
	#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