+++ /dev/null
-/**********************************************************************
- * gost_pmeth.c *
- * Copyright (c) 2005-2006 Cryptocom LTD *
- * This file is distributed under the same license as OpenSSL *
- * *
- * Implementation of RFC 4357 (GOST R 34.10) Publick key method *
- * for OpenSSL *
- * Requires OpenSSL 0.9.9 for compilation *
- **********************************************************************/
-#include <openssl/evp.h>
-#include <openssl/objects.h>
-#include <openssl/ec.h>
-#include <openssl/x509v3.h> /*For string_to_hex */
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include "gost_params.h"
-#include "gost_lcl.h"
-#include "e_gost_err.h"
-/*-------init, cleanup, copy - uniform for all algs ---------------*/
-/* Allocates new gost_pmeth_data structure and assigns it as data */
-static int pkey_gost_init(EVP_PKEY_CTX *ctx)
- {
- struct gost_pmeth_data *data;
- EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
- data = OPENSSL_malloc(sizeof(struct gost_pmeth_data));
- if (!data) return 0;
- memset(data,0,sizeof(struct gost_pmeth_data));
- if (pkey && EVP_PKEY_get0(pkey))
- {
- switch (EVP_PKEY_base_id(pkey)) {
- case NID_id_GostR3410_94:
- data->sign_param_nid = gost94_nid_by_params(EVP_PKEY_get0(pkey));
- break;
- case NID_id_GostR3410_2001:
- data->sign_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey)));
- break;
- default:
- return 0;
- }
- }
- EVP_PKEY_CTX_set_data(ctx,data);
- return 1;
- }
-
-/* Copies contents of gost_pmeth_data structure */
-static int pkey_gost_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
- {
- struct gost_pmeth_data *dst_data,*src_data;
- if (!pkey_gost_init(dst))
- {
- return 0;
- }
- src_data = EVP_PKEY_CTX_get_data(src);
- dst_data = EVP_PKEY_CTX_get_data(dst);
- *dst_data = *src_data;
- if (src_data -> shared_ukm) {
- dst_data->shared_ukm=NULL;
- }
- return 1;
- }
-
-/* Frees up gost_pmeth_data structure */
-static void pkey_gost_cleanup (EVP_PKEY_CTX *ctx)
- {
- struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
- if (data->shared_ukm) OPENSSL_free(data->shared_ukm);
- OPENSSL_free(data);
- }
-
-/* --------------------- control functions ------------------------------*/
-static int pkey_gost_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
- {
- struct gost_pmeth_data *pctx = (struct gost_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
- switch (type)
- {
- case EVP_PKEY_CTRL_MD:
- {
- if (EVP_MD_type((const EVP_MD *)p2) != NID_id_GostR3411_94)
- {
- GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
- return 0;
- }
- pctx->md = (EVP_MD *)p2;
- return 1;
- }
- break;
-
- case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
- case EVP_PKEY_CTRL_PKCS7_DECRYPT:
- case EVP_PKEY_CTRL_PKCS7_SIGN:
- case EVP_PKEY_CTRL_DIGESTINIT:
-#ifndef OPENSSL_NO_CMS
- case EVP_PKEY_CTRL_CMS_ENCRYPT:
- case EVP_PKEY_CTRL_CMS_DECRYPT:
- case EVP_PKEY_CTRL_CMS_SIGN:
-#endif
- return 1;
-
- case EVP_PKEY_CTRL_GOST_PARAMSET:
- pctx->sign_param_nid = (int)p1;
- return 1;
- case EVP_PKEY_CTRL_SET_IV:
- pctx->shared_ukm=OPENSSL_malloc((int)p1);
- memcpy(pctx->shared_ukm,p2,(int) p1);
- return 1;
- case EVP_PKEY_CTRL_PEER_KEY:
- if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
- return 1;
- if (p1 == 2) /* TLS: peer key used? */
- return pctx->peer_key_used;
- if (p1 == 3) /* TLS: peer key used! */
- return (pctx->peer_key_used = 1);
- return -2;
- }
- return -2;
- }
-
-
-static int pkey_gost_ctrl94_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
- {
- int param_nid=0;
- if(!strcmp(type, param_ctrl_string))
- {
- if (!value)
- {
- return 0;
- }
- if (strlen(value) == 1)
- {
- switch(toupper((unsigned char)value[0]))
- {
- case 'A':
- param_nid = NID_id_GostR3410_94_CryptoPro_A_ParamSet;
- break;
- case 'B':
- param_nid = NID_id_GostR3410_94_CryptoPro_B_ParamSet;
- break;
- case 'C':
- param_nid = NID_id_GostR3410_94_CryptoPro_C_ParamSet;
- break;
- case 'D':
- param_nid = NID_id_GostR3410_94_CryptoPro_D_ParamSet;
- break;
- default:
- return 0;
- break;
- }
- }
- else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
- {
- switch (toupper((unsigned char)value[1]))
- {
- case 'A':
- param_nid = NID_id_GostR3410_94_CryptoPro_XchA_ParamSet;
- break;
- case 'B':
- param_nid = NID_id_GostR3410_94_CryptoPro_XchB_ParamSet;
- break;
- case 'C':
- param_nid = NID_id_GostR3410_94_CryptoPro_XchC_ParamSet;
- break;
- default:
- return 0;
- break;
- }
- }
- else
- {
- R3410_params *p = R3410_paramset;
- param_nid = OBJ_txt2nid(value);
- if (param_nid == NID_undef)
- {
- return 0;
- }
- for (;p->nid != NID_undef;p++)
- {
- if (p->nid == param_nid) break;
- }
- if (p->nid == NID_undef)
- {
- GOSTerr(GOST_F_PKEY_GOST_CTRL94_STR,
- GOST_R_INVALID_PARAMSET);
- return 0;
- }
- }
-
- return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
- param_nid, NULL);
- }
- return -2;
- }
-
-static int pkey_gost_ctrl01_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
- {
- int param_nid=0;
- if(!strcmp(type, param_ctrl_string))
- {
- if (!value)
- {
- return 0;
- }
- if (strlen(value) == 1)
- {
- switch(toupper((unsigned char)value[0]))
- {
- case 'A':
- param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
- break;
- case 'B':
- param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
- break;
- case 'C':
- param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
- break;
- case '0':
- param_nid = NID_id_GostR3410_2001_TestParamSet;
- break;
- default:
- return 0;
- break;
- }
- }
- else if ((strlen(value) == 2) && (toupper((unsigned char)value[0]) == 'X'))
- {
- switch (toupper((unsigned char)value[1]))
- {
- case 'A':
- param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
- break;
- case 'B':
- param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
- break;
- default:
- return 0;
- break;
- }
- }
- else
- {
- R3410_2001_params *p = R3410_2001_paramset;
- param_nid = OBJ_txt2nid(value);
- if (param_nid == NID_undef)
- {
- return 0;
- }
- for (;p->nid != NID_undef;p++)
- {
- if (p->nid == param_nid) break;
- }
- if (p->nid == NID_undef)
- {
- GOSTerr(GOST_F_PKEY_GOST_CTRL01_STR,
- GOST_R_INVALID_PARAMSET);
- return 0;
- }
- }
-
- return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
- param_nid, NULL);
- }
- return -2;
- }
-
-/* --------------------- key generation --------------------------------*/
-
-static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx) {
- return 1;
-}
-static int pkey_gost94_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
- DSA *dsa=NULL;
- if (data->sign_param_nid == NID_undef)
- {
- GOSTerr(GOST_F_PKEY_GOST94_PARAMGEN,
- GOST_R_NO_PARAMETERS_SET);
- return 0;
- }
- dsa = DSA_new();
- if (!fill_GOST94_params(dsa,data->sign_param_nid))
- {
- DSA_free(dsa);
- return 0;
- }
- EVP_PKEY_assign(pkey,NID_id_GostR3410_94,dsa);
- return 1;
- }
-static int pkey_gost01_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
- EC_KEY *ec=NULL;
-
- if (data->sign_param_nid == NID_undef)
- {
- GOSTerr(GOST_F_PKEY_GOST01_PARAMGEN,
- GOST_R_NO_PARAMETERS_SET);
- return 0;
- }
- if (!ec)
- ec = EC_KEY_new();
- if (!fill_GOST2001_params(ec,data->sign_param_nid))
- {
- EC_KEY_free(ec);
- return 0;
- }
- EVP_PKEY_assign(pkey,NID_id_GostR3410_2001,ec);
- return 1;
- }
-
-/* Generates Gost_R3410_94_cp key */
-static int pkey_gost94cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- DSA *dsa;
- if (!pkey_gost94_paramgen(ctx,pkey)) return 0;
- dsa = EVP_PKEY_get0(pkey);
- gost_sign_keygen(dsa);
- return 1;
- }
-
-/* Generates GOST_R3410 2001 key and assigns it using specified type */
-static int pkey_gost01cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- EC_KEY *ec;
- if (!pkey_gost01_paramgen(ctx,pkey)) return 0;
- ec = EVP_PKEY_get0(pkey);
- gost2001_keygen(ec);
- return 1;
- }
-
-
-
-/* ----------- sign callbacks --------------------------------------*/
-
-static int pkey_gost94_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
- const unsigned char *tbs, size_t tbs_len)
- {
- DSA_SIG *unpacked_sig=NULL;
- EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
- if (!siglen) return 0;
- if (!sig)
- {
- *siglen= 64; /* better to check size of pkey->pkey.dsa-q */
- return 1;
- }
- unpacked_sig = gost_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
- if (!unpacked_sig)
- {
- return 0;
- }
- return pack_sign_cp(unpacked_sig,32,sig,siglen);
- }
-
-static int pkey_gost01_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
- const unsigned char *tbs, size_t tbs_len)
- {
- DSA_SIG *unpacked_sig=NULL;
- EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
- if (!siglen) return 0;
- if (!sig)
- {
- *siglen= 64; /* better to check size of curve order*/
- return 1;
- }
- unpacked_sig = gost2001_do_sign(tbs,tbs_len,EVP_PKEY_get0(pkey));
- if (!unpacked_sig)
- {
- return 0;
- }
- return pack_sign_cp(unpacked_sig,32,sig,siglen);
- }
-
-/* ------------------- verify callbacks ---------------------------*/
-
-static int pkey_gost94_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
- size_t siglen, const unsigned char *tbs, size_t tbs_len)
- {
- int ok = 0;
- EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
- DSA_SIG *s=unpack_cp_signature(sig,siglen);
- if (!s) return 0;
- if (pub_key) ok = gost_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
- DSA_SIG_free(s);
- return ok;
- }
-
-
-static int pkey_gost01_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
- size_t siglen, const unsigned char *tbs, size_t tbs_len)
- {
- int ok = 0;
- EVP_PKEY* pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
- DSA_SIG *s=unpack_cp_signature(sig,siglen);
- if (!s) return 0;
-#ifdef DEBUG_SIGN
- fprintf(stderr,"R=");
- BN_print_fp(stderr,s->r);
- fprintf(stderr,"\nS=");
- BN_print_fp(stderr,s->s);
- fprintf(stderr,"\n");
-#endif
- if (pub_key) ok = gost2001_do_verify(tbs,tbs_len,s,EVP_PKEY_get0(pub_key));
- DSA_SIG_free(s);
- return ok;
- }
-
-/* ------------- encrypt init -------------------------------------*/
-/* Generates ephermeral key */
-static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
- {
- return 1;
- }
-/* --------------- Derive init ------------------------------------*/
-static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
-{
- return 1;
-}
-/* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
-static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
- {
- struct gost_mac_pmeth_data *data;
- data = OPENSSL_malloc(sizeof(struct gost_mac_pmeth_data));
- if (!data) return 0;
- memset(data,0,sizeof(struct gost_mac_pmeth_data));
- EVP_PKEY_CTX_set_data(ctx,data);
- return 1;
- }
-static void pkey_gost_mac_cleanup (EVP_PKEY_CTX *ctx)
- {
- struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
- OPENSSL_free(data);
- }
-static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
- {
- struct gost_mac_pmeth_data *dst_data,*src_data;
- if (!pkey_gost_mac_init(dst))
- {
- return 0;
- }
- src_data = EVP_PKEY_CTX_get_data(src);
- dst_data = EVP_PKEY_CTX_get_data(dst);
- *dst_data = *src_data;
- return 1;
- }
-
-static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
- {
- struct gost_mac_pmeth_data *data =
-(struct gost_mac_pmeth_data*)EVP_PKEY_CTX_get_data(ctx);
-
- switch (type)
- {
- case EVP_PKEY_CTRL_MD:
- {
- if (EVP_MD_type((const EVP_MD *)p2) != NID_id_Gost28147_89_MAC)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_DIGEST_TYPE);
- return 0;
- }
- data->md = (EVP_MD *)p2;
- return 1;
- }
- break;
-
- case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
- case EVP_PKEY_CTRL_PKCS7_DECRYPT:
- case EVP_PKEY_CTRL_PKCS7_SIGN:
- return 1;
- case EVP_PKEY_CTRL_SET_MAC_KEY:
- if (p1 != 32)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
- GOST_R_INVALID_MAC_KEY_LENGTH);
- return 0;
- }
-
- memcpy(data->key,p2,32);
- data->key_set = 1;
- return 1;
- case EVP_PKEY_CTRL_DIGESTINIT:
- {
- EVP_MD_CTX *mctx = p2;
- void *key;
- if (!data->key_set)
- {
- EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
- if (!pkey)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
- return 0;
- }
- key = EVP_PKEY_get0(pkey);
- if (!key)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,GOST_R_MAC_KEY_NOT_SET);
- return 0;
- }
- } else {
- key = &(data->key);
- }
- return mctx->digest->md_ctrl(mctx,EVP_MD_CTRL_SET_KEY,32,key);
- }
- }
- return -2;
- }
-static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
- {
- if (!strcmp(type, key_ctrl_string))
- {
- if (strlen(value)!=32)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
- GOST_R_INVALID_MAC_KEY_LENGTH);
- return 0;
- }
- return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
- 32,(char *)value);
- }
- if (!strcmp(type, hexkey_ctrl_string))
- {
- long keylen; int ret;
- unsigned char *keybuf=string_to_hex(value,&keylen);
- if (keylen != 32)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
- GOST_R_INVALID_MAC_KEY_LENGTH);
- OPENSSL_free(keybuf);
- return 0;
- }
- ret= pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
- 32,keybuf);
- OPENSSL_free(keybuf);
- return ret;
-
- }
- return -2;
- }
-
-static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
- {
- struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
- unsigned char *keydata;
- if (!data->key_set)
- {
- GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN,GOST_R_MAC_KEY_NOT_SET);
- return 0;
- }
- keydata = OPENSSL_malloc(32);
- memcpy(keydata,data->key,32);
- EVP_PKEY_assign(pkey, NID_id_Gost28147_89_MAC, keydata);
- return 1;
- }
-
-static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
- {
- return 1;
-}
-
-static int pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, EVP_MD_CTX *mctx)
- {
- unsigned int tmpsiglen=*siglen; /* for platforms where sizeof(int)!=sizeof(size_t)*/
- int ret;
- if (!sig)
- {
- *siglen = 4;
- return 1;
- }
- ret=EVP_DigestFinal_ex(mctx,sig,&tmpsiglen);
- *siglen = tmpsiglen;
- return ret;
- }
-/* ----------------------------------------------------------------*/
-int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth,int flags)
- {
- *pmeth = EVP_PKEY_meth_new(id, flags);
- if (!*pmeth) return 0;
-
- switch (id)
- {
- case NID_id_GostR3410_94:
- EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl94_str);
- EVP_PKEY_meth_set_keygen(*pmeth,NULL,pkey_gost94cp_keygen);
- EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost94_cp_sign);
- EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost94_cp_verify);
- EVP_PKEY_meth_set_encrypt(*pmeth,
- pkey_gost_encrypt_init, pkey_GOST94cp_encrypt);
- EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST94cp_decrypt);
- EVP_PKEY_meth_set_derive(*pmeth,
- pkey_gost_derive_init, pkey_gost94_derive);
- EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost94_paramgen);
- break;
- case NID_id_GostR3410_2001:
- EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_ctrl, pkey_gost_ctrl01_str);
- EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost01_cp_sign);
- EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost01_cp_verify);
-
- EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost01cp_keygen);
-
- EVP_PKEY_meth_set_encrypt(*pmeth,
- pkey_gost_encrypt_init, pkey_GOST01cp_encrypt);
- EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_GOST01cp_decrypt);
- EVP_PKEY_meth_set_derive(*pmeth,
- pkey_gost_derive_init, pkey_gost2001_derive);
- EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,pkey_gost01_paramgen);
- break;
- case NID_id_Gost28147_89_MAC:
- EVP_PKEY_meth_set_ctrl(*pmeth,pkey_gost_mac_ctrl, pkey_gost_mac_ctrl_str);
- EVP_PKEY_meth_set_signctx(*pmeth,pkey_gost_mac_signctx_init, pkey_gost_mac_signctx);
- EVP_PKEY_meth_set_keygen(*pmeth,NULL, pkey_gost_mac_keygen);
- EVP_PKEY_meth_set_init(*pmeth,pkey_gost_mac_init);
- EVP_PKEY_meth_set_cleanup(*pmeth,pkey_gost_mac_cleanup);
- EVP_PKEY_meth_set_copy(*pmeth,pkey_gost_mac_copy);
- return 1;
- default: /*Unsupported method*/
- return 0;
- }
- EVP_PKEY_meth_set_init(*pmeth, pkey_gost_init);
- EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_cleanup);
-
- EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_copy);
- /*FIXME derive etc...*/
-
- return 1;
- }
-
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