/**********************************************************************
- * gost_crypt.c *
+ * gost_crypt.c - Initialize all ciphers *
+ * *
* Copyright (c) 2005-2006 Cryptocom LTD *
+ * Copyright (c) 2020 Chikunov Vitaly <vt@altlinux.org> *
* This file is distributed under the same license as OpenSSL *
* *
* OpenSSL interface to GOST 28147-89 cipher functions *
**********************************************************************/
#include <string.h>
#include "gost89.h"
+#include <openssl/err.h>
#include <openssl/rand.h>
#include "e_gost_err.h"
#include "gost_lcl.h"
+#include "gost_gost2015.h"
#if !defined(CCGOST_DEBUG) && !defined(DEBUG)
# ifndef NDEBUG
static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
+static int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
+static int gost_cipher_init_cp_12(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc);
/* Handles block of data in CFB mode */
static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl);
+/* Handles block of data in CBC mode */
+static int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
/* Handles block of data in CNT mode */
static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl);
/* Control function */
static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
-EVP_CIPHER cipher_gost = {
- NID_id_Gost28147_89,
- 1, /* block_size */
- 32, /* key_size */
- 8, /* iv_len */
- EVP_CIPH_CFB_MODE | EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
- gost_cipher_init,
- gost_cipher_do_cfb,
- gost_cipher_cleanup,
- sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
- gost89_set_asn1_parameters,
- gost89_get_asn1_parameters,
- gost_cipher_ctl,
- NULL,
+static int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+/* Handles block of data in CBC mode */
+static int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+
+static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+
+/* set/get cipher parameters */
+static int magma_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
+static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
+/* Control function */
+static int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
+static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
+
+/*
+ * Single level template accessor.
+ * Note: that you cannot template 0 value.
+ */
+#define TPL(st,field) ( \
+ ((st)->field) ? ((st)->field) : TPL_VAL(st,field) \
+)
+
+#define TPL_VAL(st,field) ( \
+ ((st)->template ? (st)->template->field : 0) \
+)
+
+EVP_CIPHER *GOST_init_cipher(GOST_cipher *c)
+{
+ if (c->cipher)
+ return c->cipher;
+
+ /* Some sanity checking. */
+ int flags = c->flags | TPL_VAL(c, flags);
+ int block_size = TPL(c, block_size);
+ switch (flags & EVP_CIPH_MODE) {
+ case EVP_CIPH_CTR_MODE:
+ case EVP_CIPH_CFB_MODE:
+ case EVP_CIPH_OFB_MODE:
+ OPENSSL_assert(block_size == 1);
+ OPENSSL_assert(flags & EVP_CIPH_NO_PADDING);
+ break;
+ default:
+ OPENSSL_assert(block_size != 1);
+ OPENSSL_assert(!(flags & EVP_CIPH_NO_PADDING));
+ }
+
+ if (TPL(c, iv_len))
+ OPENSSL_assert(flags & EVP_CIPH_CUSTOM_IV);
+ else
+ OPENSSL_assert(!(flags & EVP_CIPH_CUSTOM_IV));
+
+ EVP_CIPHER *cipher;
+ if (!(cipher = EVP_CIPHER_meth_new(c->nid, block_size, TPL(c, key_len)))
+ || !EVP_CIPHER_meth_set_iv_length(cipher, TPL(c, iv_len))
+ || !EVP_CIPHER_meth_set_flags(cipher, flags)
+ || !EVP_CIPHER_meth_set_init(cipher, TPL(c, init))
+ || !EVP_CIPHER_meth_set_do_cipher(cipher, TPL(c, do_cipher))
+ || !EVP_CIPHER_meth_set_cleanup(cipher, TPL(c, cleanup))
+ || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, TPL(c, ctx_size))
+ || !EVP_CIPHER_meth_set_set_asn1_params(cipher, TPL(c, set_asn1_parameters))
+ || !EVP_CIPHER_meth_set_get_asn1_params(cipher, TPL(c, get_asn1_parameters))
+ || !EVP_CIPHER_meth_set_ctrl(cipher, TPL(c, ctrl))) {
+ EVP_CIPHER_meth_free(cipher);
+ cipher = NULL;
+ }
+ c->cipher = cipher;
+ return c->cipher;
+}
+
+void GOST_deinit_cipher(GOST_cipher *c)
+{
+ if (c->cipher) {
+ EVP_CIPHER_meth_free(c->cipher);
+ c->cipher = NULL;
+ }
+}
+
+static GOST_cipher gost_template_cipher = {
+ .block_size = 8,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .cleanup = gost_cipher_cleanup,
+ .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
+ .set_asn1_parameters = gost89_set_asn1_parameters,
+ .get_asn1_parameters = gost89_get_asn1_parameters,
+ .ctrl = gost_cipher_ctl,
+};
+
+GOST_cipher Gost28147_89_cipher = {
+ .nid = NID_id_Gost28147_89,
+ .template = &gost_template_cipher,
+ .block_size = 1,
+ .flags = EVP_CIPH_CFB_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = gost_cipher_init,
+ .do_cipher = gost_cipher_do_cfb,
+};
+
+GOST_cipher Gost28147_89_cbc_cipher = {
+ .nid = NID_gost89_cbc,
+ .template = &gost_template_cipher,
+ .flags = EVP_CIPH_CBC_MODE,
+ .init = gost_cipher_init_cbc,
+ .do_cipher = gost_cipher_do_cbc,
+};
+
+GOST_cipher Gost28147_89_cnt_cipher = {
+ .nid = NID_gost89_cnt,
+ .template = &gost_template_cipher,
+ .block_size = 1,
+ .flags = EVP_CIPH_OFB_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = gost_cipher_init_cpa,
+ .do_cipher = gost_cipher_do_cnt,
};
-EVP_CIPHER cipher_gost_cpacnt = {
- NID_gost89_cnt,
- 1, /* block_size */
- 32, /* key_size */
- 8, /* iv_len */
- EVP_CIPH_OFB_MODE | EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
- gost_cipher_init_cpa,
- gost_cipher_do_cnt,
- gost_cipher_cleanup,
- sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
- gost89_set_asn1_parameters,
- gost89_get_asn1_parameters,
- gost_cipher_ctl,
- NULL,
+GOST_cipher Gost28147_89_cnt_12_cipher = {
+ .nid = NID_gost89_cnt_12,
+ .template = &gost_template_cipher,
+ .block_size = 1,
+ .flags = EVP_CIPH_OFB_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = gost_cipher_init_cp_12,
+ .do_cipher = gost_cipher_do_cnt,
+};
+
+static GOST_cipher magma_template_cipher = {
+ .block_size = 8,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .cleanup = gost_cipher_cleanup,
+ .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
+ .set_asn1_parameters = magma_set_asn1_parameters,
+ .get_asn1_parameters = magma_get_asn1_parameters,
+ .do_cipher = magma_cipher_do_ctr,
+ .ctrl = magma_cipher_ctl,
+};
+
+GOST_cipher magma_ctr_cipher = {
+ .nid = NID_magma_ctr,
+ .template = &magma_template_cipher,
+ .block_size = 1,
+ .iv_len = 4,
+ .flags = EVP_CIPH_CTR_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = magma_cipher_init,
+};
+
+GOST_cipher magma_ctr_acpkm_cipher = {
+ .nid = NID_magma_ctr_acpkm,
+ .template = &magma_template_cipher,
+ .block_size = 1,
+ .iv_len = 4,
+ .flags = EVP_CIPH_CTR_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = magma_cipher_init,
+};
+
+GOST_cipher magma_ctr_acpkm_omac_cipher = {
+ .nid = NID_magma_ctr_acpkm_omac,
+ .template = &magma_template_cipher,
+ .block_size = 1,
+ .iv_len = 4,
+ .flags = EVP_CIPH_CTR_MODE |
+ EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_COPY |
+ EVP_CIPH_FLAG_CUSTOM_CIPHER |
+ EVP_CIPH_FLAG_CIPHER_WITH_MAC,
+ .init = magma_cipher_init_ctr_acpkm_omac,
+ .do_cipher = magma_cipher_do_ctr_acpkm_omac,
+ .ctrl = magma_cipher_ctl_acpkm_omac,
+};
+
+GOST_cipher magma_cbc_cipher = {
+ .nid = NID_magma_cbc,
+ .template = &gost_template_cipher,
+ .flags = EVP_CIPH_CBC_MODE,
+ .init = magma_cipher_init,
+ .do_cipher = magma_cipher_do_cbc,
};
/* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */
/* Init functions which set specific parameters */
static int gost_imit_init_cpa(EVP_MD_CTX *ctx);
+static int gost_imit_init_cp_12(EVP_MD_CTX *ctx);
/* process block of data */
static int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count);
/* Return computed value */
/* Control function, knows how to set MAC key.*/
static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
-EVP_MD imit_gost_cpa = {
- NID_id_Gost28147_89_MAC,
- NID_undef,
- 4,
- 0,
- gost_imit_init_cpa,
- gost_imit_update,
- gost_imit_final,
- gost_imit_copy,
- gost_imit_cleanup,
- NULL,
- NULL,
- {0, 0, 0, 0, 0},
- 8,
- sizeof(struct ossl_gost_imit_ctx),
- gost_imit_ctrl
+GOST_digest Gost28147_89_MAC_digest = {
+ .nid = NID_id_Gost28147_89_MAC,
+ .result_size = 4,
+ .input_blocksize = 8,
+ .app_datasize = sizeof(struct ossl_gost_imit_ctx),
+ .flags = EVP_MD_FLAG_XOF,
+ .init = gost_imit_init_cpa,
+ .update = gost_imit_update,
+ .final = gost_imit_final,
+ .copy = gost_imit_copy,
+ .cleanup = gost_imit_cleanup,
+ .ctrl = gost_imit_ctrl,
+};
+
+GOST_digest Gost28147_89_mac_12_digest = {
+ .nid = NID_gost_mac_12,
+ .result_size = 4,
+ .input_blocksize = 8,
+ .app_datasize = sizeof(struct ossl_gost_imit_ctx),
+ .flags = EVP_MD_FLAG_XOF,
+ .init = gost_imit_init_cp_12,
+ .update = gost_imit_update,
+ .final = gost_imit_final,
+ .copy = gost_imit_copy,
+ .cleanup = gost_imit_cleanup,
+ .ctrl = gost_imit_ctrl,
};
/*
* upon engine initialization
*/
-struct gost_cipher_info gost_cipher_list[] = {
+static struct gost_cipher_info gost_cipher_list[] = {
/*- NID *//*
* Subst block
*//*
/*
* {NID_id_GostR3411_94_CryptoProParamSet,&GostR3411_94_CryptoProParamSet,0},
*/
- {NID_id_Gost28147_89_cc, &GostR3411_94_CryptoProParamSet, 0},
{NID_id_Gost28147_89_CryptoPro_A_ParamSet, &Gost28147_CryptoProParamSetA,
1},
{NID_id_Gost28147_89_CryptoPro_B_ParamSet, &Gost28147_CryptoProParamSetB,
1},
{NID_id_Gost28147_89_CryptoPro_D_ParamSet, &Gost28147_CryptoProParamSetD,
1},
+ {NID_id_tc26_gost_28147_param_Z, &Gost28147_TC26ParamSetZ, 1},
{NID_id_Gost28147_89_TestParamSet, &Gost28147_TestParamSet, 1},
{NID_undef, NULL, 0}
};
struct gost_cipher_info *param;
if (!obj) {
const char *params = get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS);
- if (!params || !strlen(params))
- return &gost_cipher_list[1];
+ if (!params || !strlen(params)) {
+ int i;
+ for (i = 0; gost_cipher_list[i].nid != NID_undef; i++)
+ if (gost_cipher_list[i].nid == NID_id_tc26_gost_28147_param_Z)
+ return &gost_cipher_list[i];
+ return &gost_cipher_list[0];
+ }
nid = OBJ_txt2nid(params);
if (nid == NID_undef) {
GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,
GOST_R_INVALID_CIPHER_PARAM_OID);
+ ERR_add_error_data(3, "Unsupported CRYPT_PARAMS='",
+ params, "' specified in environment or in config");
return NULL;
}
} else {
static int gost_cipher_set_param(struct ossl_gost_cipher_ctx *c, int nid)
{
const struct gost_cipher_info *param;
- param =
- get_encryption_params((nid == NID_undef ? NULL : OBJ_nid2obj(nid)));
+ param = get_encryption_params((nid == NID_undef ? NULL : OBJ_nid2obj(nid)));
if (!param)
return 0;
const unsigned char *iv, int enc,
int paramNID, int mode)
{
- struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
- if (ctx->app_data == NULL) {
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) {
if (!gost_cipher_set_param(c, paramNID))
return 0;
- ctx->app_data = ctx->cipher_data;
+ EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
}
if (key)
gost_key(&(c->cctx), key);
- if (iv)
- memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+ if (iv) {
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
+ EVP_CIPHER_CTX_iv_length(ctx));
+ }
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
return 1;
}
-static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
+static int gost_cipher_init_cnt(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv,
+ gost_subst_block * block)
{
- struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
- gost_init(&(c->cctx), &Gost28147_CryptoProParamSetA);
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ gost_init(&(c->cctx), block);
c->key_meshing = 1;
c->count = 0;
if (key)
gost_key(&(c->cctx), key);
- if (iv)
- memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+ if (iv) {
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
+ EVP_CIPHER_CTX_iv_length(ctx));
+ }
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
return 1;
}
+static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ return gost_cipher_init_cnt(ctx, key, iv, &Gost28147_CryptoProParamSetA);
+}
+
+static int gost_cipher_init_cp_12(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ return gost_cipher_init_cnt(ctx, key, iv, &Gost28147_TC26ParamSetZ);
+}
+
/* Initializes EVP_CIPHER_CTX with default values */
-int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
EVP_CIPH_CFB_MODE);
}
+/* Initializes EVP_CIPHER_CTX with default values */
+static int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
+ EVP_CIPH_CBC_MODE);
+}
+
+/* Initializes EVP_CIPHER_CTX with default values */
+static int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ /* FIXME this is just initializtion check */
+ if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) {
+ if (!gost_cipher_set_param(c, NID_id_tc26_gost_28147_param_Z))
+ return 0;
+ EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
+
+ if (enc) {
+ if (init_zero_kdf_seed(c->kdf_seed) == 0)
+ return -1;
+ }
+ }
+
+ if (key) {
+ magma_key(&(c->cctx), key);
+ magma_master_key(&(c->cctx), key);
+ }
+ if (iv) {
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv,
+ EVP_CIPHER_CTX_iv_length(ctx));
+ }
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
+
+ if (EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm
+ || EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm_omac) {
+ c->key_meshing = 1024;
+ } else {
+ c->key_meshing = 0;
+ }
+
+ return 1;
+}
+
+/* Initializes EVP_CIPHER_CTX with default values */
+static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ if (key) {
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ unsigned char cipher_key[32];
+ c->omac_ctx = EVP_MD_CTX_new();
+
+ if (c->omac_ctx == NULL) {
+ GOSTerr(GOST_F_MAGMA_CIPHER_INIT_CTR_ACPKM_OMAC, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ if (gost2015_acpkm_omac_init(NID_magma_mac, enc, key,
+ c->omac_ctx, cipher_key, c->kdf_seed) != 1) {
+ EVP_MD_CTX_free(c->omac_ctx);
+ c->omac_ctx = NULL;
+ return 0;
+ }
+
+ return magma_cipher_init(ctx, cipher_key, iv, enc);
+ }
+
+ return magma_cipher_init(ctx, key, iv, enc);
+}
+
/*
* Wrapper around gostcrypt function from gost89.c which perform key meshing
* when nesseccary
c->count = c->count % 1024 + 8;
}
+/* GOST encryption in CBC mode */
+static int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ unsigned char b[8];
+ const unsigned char *in_ptr = in;
+ unsigned char *out_ptr = out;
+ int i;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ while (inl > 0) {
+
+ for (i = 0; i < 8; i++) {
+ b[i] = iv[i] ^ in_ptr[i];
+ }
+ gostcrypt(&(c->cctx), b, out_ptr);
+ memcpy(iv, out_ptr, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ } else {
+ while (inl > 0) {
+ unsigned char tmpiv[8];
+ gostdecrypt(&(c->cctx), in_ptr, b);
+ memcpy(tmpiv, in_ptr, 8);
+ for (i = 0; i < 8; i++) {
+ out_ptr[i] = iv[i] ^ b[i];
+ }
+ memcpy(iv, tmpiv, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ }
+ return 1;
+}
+
+/* MAGMA encryption in CBC mode */
+static int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ unsigned char b[8];
+ unsigned char d[8];
+ const unsigned char *in_ptr = in;
+ unsigned char *out_ptr = out;
+ int i;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ while (inl > 0) {
+
+ for (i = 0; i < 8; i++) {
+ b[7 - i] = iv[i] ^ in_ptr[i];
+ }
+ gostcrypt(&(c->cctx), b, d);
+
+ for (i = 0; i < 8; i++) {
+ out_ptr[7 - i] = d[i];
+ }
+ memcpy(iv, out_ptr, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ } else {
+ while (inl > 0) {
+ for (i = 0; i < 8; i++) {
+ d[7 - i] = in_ptr[i];
+ }
+ gostdecrypt(&(c->cctx), d, b);
+ memcpy(d, in_ptr, 8);
+ for (i = 0; i < 8; i++) {
+ out_ptr[i] = iv[i] ^ b[7 - i];
+ }
+ memcpy(iv, d, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ }
+ return 1;
+}
+
+/* increment counter (64-bit int) by 1 */
+static void ctr64_inc(unsigned char *counter)
+{
+ inc_counter(counter, 8);
+}
+
+#define MAGMA_BLOCK_SIZE 8
+#define MAGMA_BLOCK_MASK (MAGMA_BLOCK_SIZE - 1)
+static inline void apply_acpkm_magma(struct ossl_gost_cipher_ctx *
+ ctx, unsigned int *num)
+{
+ if (!ctx->key_meshing || (*num < (unsigned int)ctx->key_meshing))
+ return;
+ acpkm_magma_key_meshing(&ctx->cctx);
+ *num &= MAGMA_BLOCK_MASK;
+}
+
+/* MAGMA encryption in CTR mode */
+static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ const unsigned char *in_ptr = in;
+ unsigned char *out_ptr = out;
+ size_t j;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
+ unsigned int num = EVP_CIPHER_CTX_num(ctx);
+ size_t blocks, i, lasted = inl;
+ unsigned char b[8];
+/* Process partial blocks */
+ while ((num & MAGMA_BLOCK_MASK) && lasted) {
+ *out_ptr++ = *in_ptr++ ^ buf[7 - (num & MAGMA_BLOCK_MASK)];
+ --lasted;
+ num++;
+ }
+ blocks = lasted / MAGMA_BLOCK_SIZE;
+
+/* Process full blocks */
+ for (i = 0; i < blocks; i++) {
+ apply_acpkm_magma(c, &num);
+ for (j = 0; j < 8; j++) {
+ b[7 - j] = iv[j];
+ }
+ gostcrypt(&(c->cctx), b, buf);
+ for (j = 0; j < 8; j++) {
+ out_ptr[j] = buf[7 - j] ^ in_ptr[j];
+ }
+ ctr64_inc(iv);
+ c->count += MAGMA_BLOCK_SIZE;
+ in_ptr += MAGMA_BLOCK_SIZE;
+ out_ptr += MAGMA_BLOCK_SIZE;
+ num += MAGMA_BLOCK_SIZE;
+ lasted -= MAGMA_BLOCK_SIZE;
+ }
+
+/* Process the rest of plaintext */
+ if (lasted > 0) {
+ apply_acpkm_magma(c, &num);
+ for (j = 0; j < 8; j++) {
+ b[7 - j] = iv[j];
+ }
+ gostcrypt(&(c->cctx), b, buf);
+
+ for (i = 0; i < lasted; i++)
+ out_ptr[i] = buf[7 - i] ^ in_ptr[i];
+ ctr64_inc(iv);
+ c->count += j;
+ num += lasted;
+ }
+ EVP_CIPHER_CTX_set_num(ctx, num);
+
+ return inl;
+}
+
+/* MAGMA encryption in CTR mode */
+static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+
+ if (in == NULL && inl == 0) /* Final call */
+ return gost2015_final_call(ctx, c->omac_ctx, MAGMA_MAC_MAX_SIZE, c->tag, magma_cipher_do_ctr);
+
+ if (in == NULL)
+ return -1;
+
+ /* As in and out can be the same pointer, process unencrypted here */
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ EVP_DigestSignUpdate(c->omac_ctx, in, inl);
+
+ if (magma_cipher_do_ctr(ctx, out, in, inl) != inl)
+ return -1;
+
+ /* As in and out can be the same pointer, process decrypted here */
+ if (!EVP_CIPHER_CTX_encrypting(ctx))
+ EVP_DigestSignUpdate(c->omac_ctx, out, inl);
+
+ return inl;
+}
/* GOST encryption in CFB mode */
-int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
+static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
const unsigned char *in_ptr = in;
unsigned char *out_ptr = out;
size_t i = 0;
size_t j = 0;
+ unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
/* process partial block if any */
- if (ctx->num) {
- for (j = ctx->num, i = 0; j < 8 && i < inl;
+ if (EVP_CIPHER_CTX_num(ctx)) {
+ for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
j++, i++, in_ptr++, out_ptr++) {
- if (!ctx->encrypt)
- ctx->buf[j + 8] = *in_ptr;
- *out_ptr = ctx->buf[j] ^ (*in_ptr);
- if (ctx->encrypt)
- ctx->buf[j + 8] = *out_ptr;
+ if (!EVP_CIPHER_CTX_encrypting(ctx))
+ buf[j + 8] = *in_ptr;
+ *out_ptr = buf[j] ^ (*in_ptr);
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ buf[j + 8] = *out_ptr;
}
if (j == 8) {
- memcpy(ctx->iv, ctx->buf + 8, 8);
- ctx->num = 0;
+ memcpy(iv, buf + 8, 8);
+ EVP_CIPHER_CTX_set_num(ctx, 0);
} else {
- ctx->num = j;
+ EVP_CIPHER_CTX_set_num(ctx, j);
return 1;
}
}
- for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ for (; (inl - i) >= 8; i += 8, in_ptr += 8, out_ptr += 8) {
/*
* block cipher current iv
*/
- gost_crypt_mesh(ctx->cipher_data, ctx->iv, ctx->buf);
+ gost_crypt_mesh(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
/*
* xor next block of input text with it and output it
*/
/*
* output this block
*/
- if (!ctx->encrypt)
- memcpy(ctx->iv, in_ptr, 8);
+ if (!EVP_CIPHER_CTX_encrypting(ctx))
+ memcpy(iv, in_ptr, 8);
for (j = 0; j < 8; j++) {
- out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ out_ptr[j] = buf[j] ^ in_ptr[j];
}
/* Encrypt */
/* Next iv is next block of cipher text */
- if (ctx->encrypt)
- memcpy(ctx->iv, out_ptr, 8);
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ memcpy(iv, out_ptr, 8);
}
/* Process rest of buffer */
if (i < inl) {
- gost_crypt_mesh(ctx->cipher_data, ctx->iv, ctx->buf);
- if (!ctx->encrypt)
- memcpy(ctx->buf + 8, in_ptr, inl - i);
+ gost_crypt_mesh(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
+ if (!EVP_CIPHER_CTX_encrypting(ctx))
+ memcpy(buf + 8, in_ptr, inl - i);
for (j = 0; i < inl; j++, i++) {
- out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ out_ptr[j] = buf[j] ^ in_ptr[j];
}
- ctx->num = j;
- if (ctx->encrypt)
- memcpy(ctx->buf + 8, out_ptr, j);
+ EVP_CIPHER_CTX_set_num(ctx, j);
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ memcpy(buf + 8, out_ptr, j);
} else {
- ctx->num = 0;
+ EVP_CIPHER_CTX_set_num(ctx, 0);
}
return 1;
}
unsigned char *out_ptr = out;
size_t i = 0;
size_t j;
+ unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
/* process partial block if any */
- if (ctx->num) {
- for (j = ctx->num, i = 0; j < 8 && i < inl;
+ if (EVP_CIPHER_CTX_num(ctx)) {
+ for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
j++, i++, in_ptr++, out_ptr++) {
- *out_ptr = ctx->buf[j] ^ (*in_ptr);
+ *out_ptr = buf[j] ^ (*in_ptr);
}
if (j == 8) {
- ctx->num = 0;
+ EVP_CIPHER_CTX_set_num(ctx, 0);
} else {
- ctx->num = j;
+ EVP_CIPHER_CTX_set_num(ctx, j);
return 1;
}
}
- for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ for (; (inl - i) >= 8; i += 8, in_ptr += 8, out_ptr += 8) {
/*
* block cipher current iv
*/
/* Encrypt */
- gost_cnt_next(ctx->cipher_data, ctx->iv, ctx->buf);
+ gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
/*
* xor next block of input text with it and output it
*/
* output this block
*/
for (j = 0; j < 8; j++) {
- out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ out_ptr[j] = buf[j] ^ in_ptr[j];
}
}
/* Process rest of buffer */
if (i < inl) {
- gost_cnt_next(ctx->cipher_data, ctx->iv, ctx->buf);
+ gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
for (j = 0; i < inl; j++, i++) {
- out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ out_ptr[j] = buf[j] ^ in_ptr[j];
}
- ctx->num = j;
+ EVP_CIPHER_CTX_set_num(ctx, j);
} else {
- ctx->num = 0;
+ EVP_CIPHER_CTX_set_num(ctx, 0);
}
return 1;
}
/* Cleaning up of EVP_CIPHER_CTX */
-int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
+static int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
- gost_destroy(&((struct ossl_gost_cipher_ctx *)ctx->cipher_data)->cctx);
- ctx->app_data = NULL;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ EVP_MD_CTX_free(c->omac_ctx);
+ gost_destroy(&(c->cctx));
+ EVP_CIPHER_CTX_set_app_data(ctx, NULL);
return 1;
}
/* Control function for gost cipher */
-int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
case EVP_CTRL_RAND_KEY:
{
- if (RAND_bytes((unsigned char *)ptr, ctx->key_len) <= 0) {
- GOSTerr(GOST_F_GOST_CIPHER_CTL,
- GOST_R_RANDOM_GENERATOR_ERROR);
+ if (RAND_priv_bytes
+ ((unsigned char *)ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
+ GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
return -1;
}
break;
}
case EVP_CTRL_PBE_PRF_NID:
if (ptr) {
- *((int *)ptr) = NID_id_HMACGostR3411_94;
+ const char *params = get_gost_engine_param(GOST_PARAM_PBE_PARAMS);
+ int nid = NID_id_tc26_hmac_gost_3411_2012_512;
+
+ if (params) {
+ if (!strcmp("md_gost12_256", params))
+ nid = NID_id_tc26_hmac_gost_3411_2012_256;
+ else if (!strcmp("md_gost12_512", params))
+ nid = NID_id_tc26_hmac_gost_3411_2012_512;
+ else if (!strcmp("md_gost94", params))
+ nid = NID_id_HMACGostR3411_94;
+ }
+ *((int *)ptr) = nid;
return 1;
} else {
return 0;
}
+ case EVP_CTRL_SET_SBOX:
+ if (ptr) {
+ struct ossl_gost_cipher_ctx *c =
+ EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int nid;
+ int cur_meshing;
+ int ret;
+
+ if (c == NULL) {
+ return -1;
+ }
+
+ if (c->count != 0) {
+ return -1;
+ }
+
+ nid = OBJ_txt2nid(ptr);
+ if (nid == NID_undef) {
+ return 0;
+ }
+
+ cur_meshing = c->key_meshing;
+ ret = gost_cipher_set_param(c, nid);
+ c->key_meshing = cur_meshing;
+ return ret;
+ } else {
+ return 0;
+ }
+ case EVP_CTRL_KEY_MESH:
+ {
+ struct ossl_gost_cipher_ctx *c =
+ EVP_CIPHER_CTX_get_cipher_data(ctx);
+
+ if (c == NULL) {
+ return -1;
+ }
+
+ if (c->count != 0) {
+ return -1;
+ }
+
+ c->key_meshing = arg;
+ return 1;
+ }
default:
- GOSTerr(GOST_F_GOST_CIPHER_CTL,
- GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
+ GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
return -1;
}
return 1;
}
+/* Decrement 8-byte sequence if needed */
+int decrement_sequence(unsigned char *seq, int decrement) {
+ if (decrement < 0 || decrement > 1)
+ return 0;
+
+ int j;
+ if (decrement) {
+ for (j = 7; j >= 0; j--)
+ {
+ if (seq[j] != 0)
+ {
+ seq[j]--;
+ break;
+ }
+ else
+ seq[j] = 0xFF;
+ }
+ }
+ return 1;
+}
+
+/* Control function for gost cipher */
+static int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+ switch (type) {
+ case EVP_CTRL_RAND_KEY:
+ if (RAND_priv_bytes
+ ((unsigned char *)ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
+ GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
+ return -1;
+ }
+ break;
+ case EVP_CTRL_KEY_MESH:
+ {
+ struct ossl_gost_cipher_ctx *c =
+ EVP_CIPHER_CTX_get_cipher_data(ctx);
+
+ if (c == NULL) {
+ return -1;
+ }
+
+ if (c->count != 0) {
+ return -1;
+ }
+
+ c->key_meshing = arg;
+ return 1;
+ }
+ case EVP_CTRL_TLSTREE:
+ {
+ unsigned char newkey[32];
+ int mode = EVP_CIPHER_CTX_mode(ctx);
+ struct ossl_gost_cipher_ctx *ctr_ctx = NULL;
+ gost_ctx *c = NULL;
+
+ unsigned char adjusted_iv[8];
+ unsigned char seq[8];
+ int j, carry, decrement_arg;
+ if (mode != EVP_CIPH_CTR_MODE)
+ return -1;
+
+ ctr_ctx = (struct ossl_gost_cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
+ c = &(ctr_ctx->cctx);
+
+ /*
+ * 'arg' parameter indicates what we should do with sequence value.
+ *
+ * When function called, seq is incremented after MAC calculation.
+ * In ETM mode, we use seq 'as is' in the ctrl-function (arg = 0)
+ * Otherwise we have to decrease it in the implementation (arg = 1).
+ */
+ memcpy(seq, ptr, 8);
+ decrement_arg = arg;
+ if(!decrement_sequence(seq, decrement_arg)) {
+ GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_CTRL_CALL_FAILED);
+ return -1;
+ }
+
+ if (gost_tlstree(NID_magma_cbc, (const unsigned char *)c->master_key, newkey,
+ (const unsigned char *)seq) > 0) {
+ memset(adjusted_iv, 0, 8);
+ memcpy(adjusted_iv, EVP_CIPHER_CTX_original_iv(ctx), 4);
+ for (j = 3, carry = 0; j >= 0; j--)
+ {
+ int adj_byte = adjusted_iv[j] + seq[j+4] + carry;
+ carry = (adj_byte > 255) ? 1 : 0;
+ adjusted_iv[j] = adj_byte & 0xFF;
+ }
+ EVP_CIPHER_CTX_set_num(ctx, 0);
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), adjusted_iv, 8);
+
+ magma_key(c, newkey);
+ return 1;
+ }
+ }
+ return -1;
+ default:
+ GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
+ return -1;
+ }
+ return 1;
+}
+
+static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+ switch (type)
+ {
+ case EVP_CTRL_PROCESS_UNPROTECTED:
+ {
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ STACK_OF(X509_ATTRIBUTE) *x = ptr;
+ return gost2015_process_unprotected_attributes(x, arg, MAGMA_MAC_MAX_SIZE, c->tag);
+ }
+ case EVP_CTRL_COPY: {
+ EVP_CIPHER_CTX *out = ptr;
+ struct ossl_gost_cipher_ctx *in_cctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ struct ossl_gost_cipher_ctx *out_cctx = EVP_CIPHER_CTX_get_cipher_data(out);
+
+ if (in_cctx->omac_ctx == out_cctx->omac_ctx) {
+ out_cctx->omac_ctx = EVP_MD_CTX_new();
+ if (out_cctx->omac_ctx == NULL) {
+ GOSTerr(GOST_F_MAGMA_CIPHER_CTL_ACPKM_OMAC, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ }
+ return EVP_MD_CTX_copy(out_cctx->omac_ctx, in_cctx->omac_ctx);
+ }
+ default:
+ return magma_cipher_ctl(ctx, type, arg, ptr);
+ break;
+ }
+}
+
/* Set cipher parameters from ASN1 structure */
-int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+static int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int len = 0;
unsigned char *buf = NULL;
unsigned char *p = NULL;
- struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
ASN1_OCTET_STRING *os = NULL;
if (!gcp) {
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
return 0;
}
- if (!ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len)) {
+ if (!ASN1_OCTET_STRING_set
+ (gcp->iv, EVP_CIPHER_CTX_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx))) {
GOST_CIPHER_PARAMS_free(gcp);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
return 0;
}
ASN1_OBJECT_free(gcp->enc_param_set);
gcp->enc_param_set = OBJ_nid2obj(c->paramNID);
len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
- p = buf = (unsigned char *)OPENSSL_malloc(len);
+ p = buf = OPENSSL_malloc(len);
if (!buf) {
GOST_CIPHER_PARAMS_free(gcp);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
return 0;
}
i2d_GOST_CIPHER_PARAMS(gcp, &p);
if (!os || !ASN1_OCTET_STRING_set(os, buf, len)) {
OPENSSL_free(buf);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, ERR_R_MALLOC_FAILURE);
return 0;
}
OPENSSL_free(buf);
}
/* Store parameters into ASN1 structure */
-int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+static int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
- int ret = -1;
int len;
GOST_CIPHER_PARAMS *gcp = NULL;
unsigned char *p;
- struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int nid;
+
if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE) {
- return ret;
+ return -1;
}
p = params->value.sequence->data;
params->value.sequence->length);
len = gcp->iv->length;
- if (len != ctx->cipher->iv_len) {
+ if (len != EVP_CIPHER_CTX_iv_length(ctx)) {
GOST_CIPHER_PARAMS_free(gcp);
GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS, GOST_R_INVALID_IV_LENGTH);
return -1;
}
- if (!gost_cipher_set_param(c, OBJ_obj2nid(gcp->enc_param_set))) {
+
+ nid = OBJ_obj2nid(gcp->enc_param_set);
+ if (nid == NID_undef) {
+ GOST_CIPHER_PARAMS_free(gcp);
+ GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
+ GOST_R_INVALID_CIPHER_PARAM_OID);
+ return -1;
+ }
+
+ if (!gost_cipher_set_param(c, nid)) {
GOST_CIPHER_PARAMS_free(gcp);
return -1;
}
- memcpy(ctx->oiv, gcp->iv->data, len);
+ /*XXX missing non-const accessor */
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), gcp->iv->data,
+ EVP_CIPHER_CTX_iv_length(ctx));
GOST_CIPHER_PARAMS_free(gcp);
return 1;
}
-int gost_imit_init_cpa(EVP_MD_CTX *ctx)
+#define MAGMA_UKM_LEN 12
+static int magma_set_asn1_parameters (EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+{
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ c->key_meshing = 8192;
+
+ return gost2015_set_asn1_params(params, EVP_CIPHER_CTX_original_iv(ctx), 4,
+ c->kdf_seed);
+}
+
+static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
- struct ossl_gost_imit_ctx *c = ctx->md_data;
+ struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ unsigned char iv[16];
+
+ c->key_meshing = 8192;
+
+ if (gost2015_get_asn1_params(params, MAGMA_UKM_LEN, iv, 4, c->kdf_seed) < 0)
+ return -1;
+
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, sizeof(iv));
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, sizeof(iv));
+ /* Key meshing 8 kb*/
+ c->key_meshing = 8192;
+
+ return 1;
+}
+
+static int gost_imit_init(EVP_MD_CTX *ctx, gost_subst_block * block)
+{
+ struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
memset(c->buffer, 0, sizeof(c->buffer));
memset(c->partial_block, 0, sizeof(c->partial_block));
c->count = 0;
c->bytes_left = 0;
c->key_meshing = 1;
- gost_init(&(c->cctx), &Gost28147_CryptoProParamSetA);
+ c->dgst_size = 4;
+ gost_init(&(c->cctx), block);
return 1;
}
+static int gost_imit_init_cpa(EVP_MD_CTX *ctx)
+{
+ return gost_imit_init(ctx, &Gost28147_CryptoProParamSetA);
+}
+
+static int gost_imit_init_cp_12(EVP_MD_CTX *ctx)
+{
+ return gost_imit_init(ctx, &Gost28147_TC26ParamSetZ);
+}
+
static void mac_block_mesh(struct ossl_gost_imit_ctx *c,
const unsigned char *data)
{
- unsigned char buffer[8];
/*
- * We are using local buffer for iv because CryptoPro doesn't interpret
+ * We are using NULL for iv because CryptoPro doesn't interpret
* internal state of MAC algorithm as iv during keymeshing (but does
* initialize internal state from iv in key transport
*/
assert(c->count % 8 == 0 && c->count <= 1024);
if (c->key_meshing && c->count == 1024) {
- cryptopro_key_meshing(&(c->cctx), buffer);
+ cryptopro_key_meshing(&(c->cctx), NULL);
}
mac_block(&(c->cctx), c->buffer, data);
c->count = c->count % 1024 + 8;
}
-int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+static int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
- struct ossl_gost_imit_ctx *c = ctx->md_data;
+ struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
const unsigned char *p = data;
- size_t bytes = count, i;
+ size_t bytes = count;
if (!(c->key_set)) {
GOSTerr(GOST_F_GOST_IMIT_UPDATE, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
if (c->bytes_left) {
+ size_t i;
for (i = c->bytes_left; i < 8 && bytes > 0; bytes--, i++, p++) {
c->partial_block[i] = *p;
}
return 1;
}
-int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
+static int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
{
- struct ossl_gost_imit_ctx *c = ctx->md_data;
+ struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
if (!c->key_set) {
GOSTerr(GOST_F_GOST_IMIT_FINAL, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
mac_block_mesh(c, c->partial_block);
}
- get_mac(c->buffer, 32, md);
+ get_mac(c->buffer, 8 * c->dgst_size, md);
return 1;
}
-int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
+static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
case EVP_MD_CTRL_KEY_LEN:
return 1;
case EVP_MD_CTRL_SET_KEY:
{
- if (arg != 32) {
- GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
+ struct ossl_gost_imit_ctx *gost_imit_ctx = EVP_MD_CTX_md_data(ctx);
+
+ if (EVP_MD_meth_get_init(EVP_MD_CTX_md(ctx)) (ctx) <= 0) {
+ GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
+ EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_NO_INIT);
- gost_key(&(((struct ossl_gost_imit_ctx *)(ctx->md_data))->cctx),
- ptr);
- ((struct ossl_gost_imit_ctx *)(ctx->md_data))->key_set = 1;
- return 1;
+ if (arg == 0) {
+ struct gost_mac_key *key = (struct gost_mac_key *)ptr;
+ if (key->mac_param_nid != NID_undef) {
+ const struct gost_cipher_info *param =
+ get_encryption_params(OBJ_nid2obj(key->mac_param_nid));
+ if (param == NULL) {
+ GOSTerr(GOST_F_GOST_IMIT_CTRL,
+ GOST_R_INVALID_MAC_PARAMS);
+ return 0;
+ }
+ gost_init(&(gost_imit_ctx->cctx), param->sblock);
+ }
+ gost_key(&(gost_imit_ctx->cctx), key->key);
+ gost_imit_ctx->key_set = 1;
+ return 1;
+ } else if (arg == 32) {
+ gost_key(&(gost_imit_ctx->cctx), ptr);
+ gost_imit_ctx->key_set = 1;
+ return 1;
+ }
+ GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_SIZE);
+ return 0;
+ }
+ case EVP_MD_CTRL_XOF_LEN:
+ {
+ struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
+ if (arg < 1 || arg > 8) {
+ GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_SIZE);
+ return 0;
+ }
+ c->dgst_size = arg;
+ return 1;
}
+
default:
return 0;
}
}
-int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
+static int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
{
- memcpy(to->md_data, from->md_data, sizeof(struct ossl_gost_imit_ctx));
+ if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
+ memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
+ sizeof(struct ossl_gost_imit_ctx));
+ }
return 1;
}
/* Clean up imit ctx */
-int gost_imit_cleanup(EVP_MD_CTX *ctx)
+static int gost_imit_cleanup(EVP_MD_CTX *ctx)
{
- memset(ctx->md_data, 0, sizeof(struct ossl_gost_imit_ctx));
+ memset(EVP_MD_CTX_md_data(ctx), 0, sizeof(struct ossl_gost_imit_ctx));
return 1;
}
+/* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */