/**********************************************************************
- * 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 <openssl/rand.h>
#include "e_gost_err.h"
#include "gost_lcl.h"
+#include "gost_gost2015.h"
#if !defined(CCGOST_DEBUG) && !defined(DEBUG)
# ifndef NDEBUG
/* Control function */
static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
-static int magma_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
+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 EVP_CIPHER *_hidden_Gost28147_89_cipher = NULL;
-const EVP_CIPHER *cipher_gost(void)
+ 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);
+
+EVP_CIPHER *GOST_init_cipher(GOST_cipher *c)
{
- if (_hidden_Gost28147_89_cipher == NULL
- && ((_hidden_Gost28147_89_cipher =
- EVP_CIPHER_meth_new(NID_id_Gost28147_89, 1 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cipher, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cipher,
- EVP_CIPH_CFB_MODE |
- EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cipher,
- gost_cipher_init)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cipher,
- gost_cipher_do_cfb)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cipher,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cipher,
- sizeof(struct
- ossl_gost_cipher_ctx))
- ||
- !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cipher,
- gost89_set_asn1_parameters)
- ||
- !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cipher,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cipher,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
- _hidden_Gost28147_89_cipher = NULL;
+ if (c->cipher)
+ return c->cipher;
+
+ EVP_CIPHER *cipher;
+ if (!(cipher = EVP_CIPHER_meth_new(c->nid, c->block_size, c->key_len))
+ || !EVP_CIPHER_meth_set_iv_length(cipher, c->iv_len)
+ || !EVP_CIPHER_meth_set_flags(cipher, c->flags)
+ || !EVP_CIPHER_meth_set_init(cipher, c->init)
+ || !EVP_CIPHER_meth_set_do_cipher(cipher, c->do_cipher)
+ || !EVP_CIPHER_meth_set_cleanup(cipher, c->cleanup)
+ || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, c->ctx_size)
+ || !EVP_CIPHER_meth_set_set_asn1_params(cipher, c->set_asn1_parameters)
+ || !EVP_CIPHER_meth_set_get_asn1_params(cipher, c->get_asn1_parameters)
+ || !EVP_CIPHER_meth_set_ctrl(cipher, c->ctrl)) {
+ EVP_CIPHER_meth_free(cipher);
+ cipher = NULL;
}
- return _hidden_Gost28147_89_cipher;
+ c->cipher = cipher;
+ return c->cipher;
}
-static EVP_CIPHER *_hidden_Gost28147_89_cbc = NULL;
-const EVP_CIPHER *cipher_gost_cbc(void)
+void GOST_deinit_cipher(GOST_cipher *c)
{
- if (_hidden_Gost28147_89_cbc == NULL
- && ((_hidden_Gost28147_89_cbc =
- EVP_CIPHER_meth_new(NID_gost89_cbc, 8 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cbc, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cbc,
- EVP_CIPH_CBC_MODE |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cbc,
- gost_cipher_init_cbc)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cbc,
- gost_cipher_do_cbc)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cbc,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cbc,
- sizeof(struct
- ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cbc,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cbc,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cbc,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
- _hidden_Gost28147_89_cbc = NULL;
+ if (c->cipher) {
+ EVP_CIPHER_meth_free(c->cipher);
+ c->cipher = NULL;
}
- return _hidden_Gost28147_89_cbc;
}
-static EVP_CIPHER *_hidden_gost89_cnt = NULL;
-const EVP_CIPHER *cipher_gost_cpacnt(void)
+GOST_cipher Gost28147_89_cipher = {
+ .nid = NID_id_Gost28147_89,
+ .block_size = 1,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CFB_MODE |
+ EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .init = gost_cipher_init,
+ .do_cipher = gost_cipher_do_cfb,
+ .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_cbc_cipher = {
+ .nid = NID_gost89_cbc,
+ .block_size = 8,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CBC_MODE |
+ EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .init = gost_cipher_init_cbc,
+ .do_cipher = gost_cipher_do_cbc,
+ .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_cnt_cipher = {
+ .nid = NID_gost89_cnt,
+ .block_size = 1,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_OFB_MODE |
+ EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .init = gost_cipher_init_cpa,
+ .do_cipher = gost_cipher_do_cnt,
+ .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_cnt_12_cipher = {
+ .nid = NID_gost89_cnt_12,
+ .block_size = 1,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_OFB_MODE |
+ EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .init = gost_cipher_init_cp_12,
+ .do_cipher = gost_cipher_do_cnt,
+ .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 magma_ctr_cipher = {
+ .nid = NID_magma_ctr,
+ .block_size = 1,
+ .key_len = 32,
+ .iv_len = 4,
+ .flags = EVP_CIPH_CTR_MODE |
+ EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .init = magma_cipher_init,
+ .do_cipher = magma_cipher_do_ctr,
+ .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 = magma_cipher_ctl,
+};
+
+static EVP_CIPHER *_hidden_magma_ctr_acpkm = NULL;
+const EVP_CIPHER *cipher_magma_ctr_acpkm(void)
{
- if (_hidden_gost89_cnt == NULL
- && ((_hidden_gost89_cnt =
- EVP_CIPHER_meth_new(NID_gost89_cnt, 1 /* block_size */ ,
+ if (_hidden_magma_ctr_acpkm == NULL
+ && ((_hidden_magma_ctr_acpkm =
+ EVP_CIPHER_meth_new(NID_magma_ctr_acpkm, 1 /* block_size */ ,
32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt,
- EVP_CIPH_OFB_MODE |
+ || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm, 4)
+ || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm,
+ EVP_CIPH_CTR_MODE |
EVP_CIPH_NO_PADDING |
EVP_CIPH_CUSTOM_IV |
EVP_CIPH_RAND_KEY |
EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt,
- gost_cipher_init_cpa)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt,
- gost_cipher_do_cnt)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt,
+ || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm, magma_cipher_init)
+ || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm,
+ magma_cipher_do_ctr)
+ || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm,
gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt,
+ || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm,
sizeof(struct
ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_gost89_cnt);
- _hidden_gost89_cnt = NULL;
+ || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm,
+ magma_set_asn1_parameters)
+ || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm,
+ magma_get_asn1_parameters)
+
+ || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm, magma_cipher_ctl))) {
+ EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
+ _hidden_magma_ctr_acpkm = NULL;
}
- return _hidden_gost89_cnt;
+ return _hidden_magma_ctr_acpkm;
}
-static EVP_CIPHER *_hidden_gost89_cnt_12 = NULL;
-const EVP_CIPHER *cipher_gost_cpcnt_12(void)
+static EVP_CIPHER *_hidden_magma_ctr_acpkm_omac = NULL;
+const EVP_CIPHER *cipher_magma_ctr_acpkm_omac(void)
{
- if (_hidden_gost89_cnt_12 == NULL
- && ((_hidden_gost89_cnt_12 =
- EVP_CIPHER_meth_new(NID_gost89_cnt_12, 1 /* block_size */ ,
+ if (_hidden_magma_ctr_acpkm_omac == NULL
+ && ((_hidden_magma_ctr_acpkm_omac =
+ EVP_CIPHER_meth_new(NID_magma_ctr_acpkm_omac, 1 /* block_size */ ,
32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt_12, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt_12,
- EVP_CIPH_OFB_MODE |
+ || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm_omac, 4)
+ || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm_omac,
+ EVP_CIPH_CTR_MODE |
EVP_CIPH_NO_PADDING |
EVP_CIPH_CUSTOM_IV |
EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt_12,
- gost_cipher_init_cp_12)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt_12,
- gost_cipher_do_cnt)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt_12,
+ EVP_CIPH_ALWAYS_CALL_INIT |
+ EVP_CIPH_CUSTOM_COPY |
+ EVP_CIPH_FLAG_CUSTOM_CIPHER |
+ EVP_CIPH_FLAG_CIPHER_WITH_MAC)
+ || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm_omac, magma_cipher_init_ctr_acpkm_omac)
+ || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm_omac,
+ magma_cipher_do_ctr_acpkm_omac)
+ || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm_omac,
gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt_12,
+ || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm_omac,
sizeof(struct
ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt_12,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt_12,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt_12,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
- _hidden_gost89_cnt_12 = NULL;
+ || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm_omac,
+ magma_set_asn1_parameters)
+ || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm_omac,
+ magma_get_asn1_parameters)
+ || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm_omac, magma_cipher_ctl_acpkm_omac))) {
+ EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
+ _hidden_magma_ctr_acpkm_omac = NULL;
}
- return _hidden_gost89_cnt_12;
+ return _hidden_magma_ctr_acpkm_omac;
}
static EVP_CIPHER *_hidden_magma_cbc = NULL;
EVP_CIPH_CUSTOM_IV |
EVP_CIPH_RAND_KEY |
EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_magma_cbc,
- magma_cipher_init_cbc)
+ || !EVP_CIPHER_meth_set_init(_hidden_magma_cbc, magma_cipher_init)
|| !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_cbc,
magma_cipher_do_cbc)
|| !EVP_CIPHER_meth_set_cleanup(_hidden_magma_cbc,
|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_cbc,
sizeof(struct
ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_cbc,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_cbc,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_cbc,
- gost_cipher_ctl))) {
+ || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_cbc, magma_cipher_ctl))) {
EVP_CIPHER_meth_free(_hidden_magma_cbc);
_hidden_magma_cbc = NULL;
}
return _hidden_magma_cbc;
}
-void cipher_gost_destroy(void)
-{
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
- _hidden_Gost28147_89_cipher = NULL;
- EVP_CIPHER_meth_free(_hidden_gost89_cnt);
- _hidden_gost89_cnt = NULL;
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
- _hidden_Gost28147_89_cbc = NULL;
- EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
- _hidden_gost89_cnt_12 = NULL;
- EVP_CIPHER_meth_free(_hidden_magma_cbc);
- _hidden_magma_cbc = NULL;
-}
-
/* 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);
|| !EVP_MD_meth_set_result_size(md, 4)
|| !EVP_MD_meth_set_input_blocksize(md, 8)
|| !EVP_MD_meth_set_app_datasize(md,
- sizeof(struct
- ossl_gost_imit_ctx))
- || !EVP_MD_meth_set_flags(md, 0)
+ sizeof(struct ossl_gost_imit_ctx))
+ || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
|| !EVP_MD_meth_set_init(md, gost_imit_init_cpa)
|| !EVP_MD_meth_set_update(md, gost_imit_update)
|| !EVP_MD_meth_set_final(md, gost_imit_final)
|| !EVP_MD_meth_set_result_size(md, 4)
|| !EVP_MD_meth_set_input_blocksize(md, 8)
|| !EVP_MD_meth_set_app_datasize(md,
- sizeof(struct
- ossl_gost_imit_ctx))
- || !EVP_MD_meth_set_flags(md, 0)
+ sizeof(struct ossl_gost_imit_ctx))
+ || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
|| !EVP_MD_meth_set_init(md, gost_imit_init_cp_12)
|| !EVP_MD_meth_set_update(md, gost_imit_update)
|| !EVP_MD_meth_set_final(md, gost_imit_final)
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;
return 1;
}
-static int magma_cipher_init_param(EVP_CIPHER_CTX *ctx,
- const unsigned char *key,
- const unsigned char *iv, int enc,
- int paramNID, int mode)
-{
- 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, NID_id_tc26_gost_28147_param_Z))
- return 0;
- EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
- }
- if (key)
- magma_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));
- return 1;
-}
-
static int gost_cipher_init_cnt(EVP_CIPHER_CTX *ctx,
const unsigned char *key,
const unsigned char *iv,
}
/* Initializes EVP_CIPHER_CTX with default values */
-int magma_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
+int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
{
- return magma_cipher_init_param(ctx, key, iv, enc, NID_undef,
- EVP_CIPH_CBC_MODE);
+ 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);
+ 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 */
+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);
}
/*
return 1;
}
-/* GOST encryption in CBC mode */
+/* MAGMA encryption in CBC mode */
int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
unsigned char b[8];
- unsigned char d[8];
+ unsigned char d[8];
const unsigned char *in_ptr = in;
unsigned char *out_ptr = out;
int i;
while (inl > 0) {
for (i = 0; i < 8; i++) {
- b[7-i] = iv[i] ^ in_ptr[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];
+ out_ptr[7 - i] = d[i];
}
memcpy(iv, out_ptr, 8);
out_ptr += 8;
} else {
while (inl > 0) {
for (i = 0; i < 8; i++) {
- d[7-i] = in_ptr[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];
+ out_ptr[i] = iv[i] ^ b[7 - i];
}
- memcpy(iv, in_ptr, 8);
+ 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);
+}
+
+/* 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 i = 0;
+ 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 char b[8];
+/* Process partial blocks */
+ 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 = buf[7 - j] ^ (*in_ptr);
+ }
+ if (j == 8) {
+ EVP_CIPHER_CTX_set_num(ctx, 0);
+ } else {
+ EVP_CIPHER_CTX_set_num(ctx, j);
+ return inl;
+ }
+ }
+
+/* Process full blocks */
+ for (; i + 8 <= inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ 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 += 8;
+ if (c->key_meshing && (c->count % c->key_meshing == 0))
+ acpkm_magma_key_meshing(&(c->cctx));
+ }
+
+/* Process the rest of plaintext */
+ if (i < inl) {
+ for (j = 0; j < 8; j++) {
+ b[7 - j] = iv[j];
+ }
+ gostcrypt(&(c->cctx), b, buf);
+
+ for (j = 0; i < inl; j++, i++) {
+ out_ptr[j] = buf[7 - j] ^ in_ptr[j];
+ }
+
+ ctr64_inc(iv);
+ c->count += 8;
+ if (c->key_meshing && (c->count % c->key_meshing == 0))
+ acpkm_magma_key_meshing(&(c->cctx));
+
+ EVP_CIPHER_CTX_set_num(ctx, j);
+ } else {
+ EVP_CIPHER_CTX_set_num(ctx, 0);
+ }
+
+ 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,
const unsigned char *in, size_t inl)
/* Cleaning up of EVP_CIPHER_CTX */
int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
- gost_destroy(&
- ((struct ossl_gost_cipher_ctx *)
- EVP_CIPHER_CTX_get_cipher_data(ctx))->cctx);
+ 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;
}
int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
-#if 0
- case EVP_CTRL_INIT:
- {
- struct ossl_gost_cipher_ctx *c =
- EVP_CIPHER_CTX_get_cipher_data(ctx);
- if (c == NULL) {
- return -1;
- }
- return gost_cipher_set_param(c, arg);
- }
-#endif
case EVP_CTRL_RAND_KEY:
{
- if (RAND_bytes
+ 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;
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;
+}
+
+/* Control function for gost cipher */
+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;
+ }
+ 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)
{
/* Store parameters into ASN1 structure */
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;
int nid;
if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE) {
- return ret;
+ return -1;
}
p = params->value.sequence->data;
return 1;
}
+#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_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);
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;
{
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;
case EVP_MD_CTRL_SET_KEY:
{
- struct ossl_gost_imit_ctx *gost_imit_ctx =
- EVP_MD_CTX_md_data(ctx);
+ 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);
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));
+ get_encryption_params(OBJ_nid2obj(key->mac_param_nid));
if (param == NULL) {
GOSTerr(GOST_F_GOST_IMIT_CTRL,
GOST_R_INVALID_MAC_PARAMS);
GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_SIZE);
return 0;
}
- case EVP_MD_CTRL_MAC_LEN:
+ case EVP_MD_CTRL_XOF_LEN:
{
struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
if (arg < 1 || arg > 8) {
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 : */
projects / openssl-gost / engine.git / blobdiff