--- /dev/null
+#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
projects / cassiopeia.git / blobdiff