/**********************************************************************
- * 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
const unsigned char *in, size_t inl);
/* Cleanup function */
static int gost_cipher_cleanup(EVP_CIPHER_CTX *);
+static int gost_magma_mgm_cleanup(EVP_CIPHER_CTX *c);
/* set/get cipher parameters */
static int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
static int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
/* Control function */
static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
-static EVP_CIPHER *_hidden_Gost28147_89_cipher = NULL;
-const EVP_CIPHER *cipher_gost(void)
-{
- 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;
- }
- return _hidden_Gost28147_89_cipher;
-}
-
-static EVP_CIPHER *_hidden_Gost28147_89_cbc = NULL;
-const EVP_CIPHER *cipher_gost_cbc(void)
-{
- 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;
- }
- return _hidden_Gost28147_89_cbc;
-}
-static EVP_CIPHER *_hidden_gost89_cnt = NULL;
-const EVP_CIPHER *cipher_gost_cpacnt(void)
-{
- if (_hidden_gost89_cnt == NULL
- && ((_hidden_gost89_cnt =
- EVP_CIPHER_meth_new(NID_gost89_cnt,
- 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_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,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt,
- 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;
- }
- return _hidden_gost89_cnt;
-}
-
-static EVP_CIPHER *_hidden_gost89_cnt_12 = NULL;
-const EVP_CIPHER *cipher_gost_cpcnt_12(void)
-{
- if (_hidden_gost89_cnt_12 == NULL
- && ((_hidden_gost89_cnt_12 =
- EVP_CIPHER_meth_new(NID_gost89_cnt_12,
- 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_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,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt_12,
- 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;
- }
- return _hidden_gost89_cnt_12;
-}
-
-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;
+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);
+static int gost_magma_cipher_init_mgm(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_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+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);
+static int gost_magma_cipher_do_mgm(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len);
+/* 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);
+static int gost_magma_mgm_ctrl(EVP_CIPHER_CTX *c, 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_CBC_MODE:
+ case EVP_CIPH_ECB_MODE:
+ case EVP_CIPH_WRAP_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,
+};
+
+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,
+ .flags =
+ 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_CUSTOM_IV |
+ 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_CUSTOM_IV |
+ 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_CUSTOM_IV |
+ 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_ecb_cipher = {
+ .nid = NID_magma_ecb,
+ .template = &magma_template_cipher,
+ .flags = EVP_CIPH_ECB_MODE,
+ .init = magma_cipher_init,
+ .do_cipher = magma_cipher_do_ecb,
+};
+
+ GOST_cipher magma_mgm_cipher = {
+ .nid = NID_undef,
+ .template = &magma_template_cipher,
+ .block_size = 1,
+ .iv_len = 8,
+ .flags = EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
+ EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER,
+ .init = gost_magma_cipher_init_mgm,
+ .do_cipher = gost_magma_cipher_do_mgm,
+ .ctrl = gost_magma_mgm_ctrl,
+ .cleanup = gost_magma_mgm_cleanup,
+ .ctx_size = sizeof(gost_mgm_ctx)
+ };
+
+static void magma_NID_callback (int nid)
+{
+ magma_mgm_cipher.nid = nid;
+}
+
+GOST_NID_JOB magma_mgm_NID = {
+ .sn = SN_magma_mgm,
+ .ln = SN_magma_mgm,
+ .callback = magma_NID_callback,
+};
+
+GOST_cipher magma_cbc_cipher = {
+ .nid = NID_magma_cbc,
+ .template = &gost_template_cipher,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CBC_MODE |
+ EVP_CIPH_CUSTOM_IV,
+ .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 */
/* Control function, knows how to set MAC key.*/
static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
-static EVP_MD *_hidden_Gost28147_89_MAC_md = NULL;
-static EVP_MD *_hidden_Gost28147_89_12_MAC_md = NULL;
-
-EVP_MD *imit_gost_cpa(void)
-{
- if (_hidden_Gost28147_89_MAC_md == NULL) {
- EVP_MD *md;
-
- if ((md = EVP_MD_meth_new(NID_id_Gost28147_89_MAC, NID_undef)) == NULL
- || !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)
- || !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_copy(md, gost_imit_copy)
- || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
- || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
- EVP_MD_meth_free(md);
- md = NULL;
- }
- _hidden_Gost28147_89_MAC_md = md;
- }
- return _hidden_Gost28147_89_MAC_md;
-}
-
-void imit_gost_cpa_destroy(void)
-{
- EVP_MD_meth_free(_hidden_Gost28147_89_MAC_md);
- _hidden_Gost28147_89_MAC_md = NULL;
-}
-
-EVP_MD *imit_gost_cp_12(void)
-{
- if (_hidden_Gost28147_89_12_MAC_md == NULL) {
- EVP_MD *md;
-
- if ((md = EVP_MD_meth_new(NID_gost_mac_12, NID_undef)) == NULL
- || !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)
- || !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)
- || !EVP_MD_meth_set_copy(md, gost_imit_copy)
- || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
- || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
- EVP_MD_meth_free(md);
- md = NULL;
- }
- _hidden_Gost28147_89_12_MAC_md = md;
- }
- return _hidden_Gost28147_89_12_MAC_md;
-}
+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,
+};
-void imit_gost_cp_12_destroy(void)
-{
- EVP_MD_meth_free(_hidden_Gost28147_89_12_MAC_md);
- _hidden_Gost28147_89_12_MAC_md = NULL;
-}
+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,
+};
/*
* Correspondence between gost parameter OIDs and substitution blocks
* upon engine initialization
*/
-struct gost_cipher_info gost_cipher_list[] = {
+static struct gost_cipher_info gost_cipher_list[] = {
/*- NID *//*
* Subst block
*//*
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 = EVP_CIPHER_CTX_cipher_data(ctx);
+ 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;
- EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_cipher_data(ctx));
+ EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
}
if (key)
gost_key(&(c->cctx), key);
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));
+ EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
return 1;
}
const unsigned char *iv,
gost_subst_block * block)
{
- struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_cipher_data(ctx);
+ 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;
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));
+ EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx));
return 1;
}
}
/* 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,
}
/* Initializes EVP_CIPHER_CTX with default values */
-int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+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);
+}
+
+void gost_magma_encrypt_wrap(unsigned char *in, unsigned char *out,
+ struct ossl_gost_cipher_ctx *c) {
+ int i;
+ unsigned char b[8];
+ unsigned char d[8];
+ for (i = 0; i < 8; i++) {
+ b[7 - i] = in[i];
+ }
+ gostcrypt(&(c->cctx), b, d);
+ for (i = 0; i < 8; i++) {
+ out[7 - i] = d[i];
+ }
+}
+
+/* ----------------------------------------------------------------------------------------------- */
+/*! Функция реализует операцию умножения двух элементов конечного поля \f$ \mathbb F_{2^{64}}\f$,
+ порожденного неприводимым многочленом
+ \f$ f(x) = x^{64} + x^4 + x^3 + x + 1 \in \mathbb F_2[x]\f$. Для умножения используется
+ простейшая реализация, основанная на приведении по модулю после каждого шага алгоритма. */
+/* ----------------------------------------------------------------------------------------------- */
+static void gf64_mul (uint64_t *result, uint64_t *arg1, uint64_t *arg2)
+{
+ int i = 0;
+ register uint64_t t, X0;
+ uint64_t Z0 = 0;
+
+#ifdef L_ENDIAN
+ X0 = BSWAP64(*arg1);
+#else
+ X0 = *arg1;
+#endif
+
+#ifdef L_ENDIAN
+ t = BSWAP64(*(arg2));
+#else
+ t = *(arg2);
+#endif
+
+ for (i = 0; i < 63; i++) {
+ if (t & 0x1) {
+ Z0 ^= X0;
+ }
+ t >>= 1;
+ if (X0 & 0x8000000000000000) {
+ X0 <<= 1;
+ X0 ^= 0x1b;
+ }
+ else {
+ X0 <<= 1;
+ }
+ }
+
+ if (t & 0x1) {
+ Z0 ^= X0;
+ }
+
+#ifdef L_ENDIAN
+ *(result) = BSWAP64(Z0);
+#else
+ *(result) = Z0;
+#endif
+}
+
+static int gost_magma_cipher_init_mgm(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int bl;
+
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ bl = EVP_CIPHER_CTX_iv_length(ctx);
+ if (!gost_cipher_set_param(&mctx->ks.g_ks, NID_id_tc26_gost_28147_param_Z))
+ return 0;
+ magma_key(&(mctx->ks.g_ks.cctx), key);
+ gost_mgm128_init(&mctx->mgm, &mctx->ks,
+ (block128_f) gost_magma_encrypt_wrap, gf64_mul, bl);
+
+ /*
+ * If we have an iv can set it directly, otherwise use saved IV.
+ */
+ if (iv == NULL && mctx->iv_set)
+ iv = mctx->iv;
+ if (iv) {
+ if (gost_mgm128_setiv(&mctx->mgm, iv, mctx->ivlen) != 1)
+ return 0;
+ mctx->iv_set = 1;
+ }
+ mctx->key_set = 1;
+ } else {
+ /* If key set use IV, otherwise copy */
+ if (mctx->key_set) {
+ if (gost_mgm128_setiv(&mctx->mgm, iv, mctx->ivlen) != 1)
+ return 0;
+ }
+ else
+ memcpy(mctx->iv, iv, mctx->ivlen);
+ mctx->iv_set = 1;
+ }
+ return 1;
+}
+
/*
* Wrapper around gostcrypt function from gost89.c which perform key meshing
* when nesseccary
c->count = c->count % 1024 + 8;
}
-/* GOST encryptoon in CBC mode */
-int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+/* 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)
{
- OPENSSL_assert(inl % 8 == 0);
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_cipher_data(ctx);
+ 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];
}
}
} 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, in_ptr, 8);
+ memcpy(iv, tmpiv, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ }
+ return 1;
+}
+
+/* MAGMA encryption in ECB mode */
+static int magma_cipher_do_ecb(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 (EVP_CIPHER_CTX_encrypting(ctx)) {
+ while (inl > 0) {
+ magmacrypt(&(c->cctx), in, out);
+ out += 8;
+ in += 8;
+ inl -= 8;
+ }
+ } else {
+ while (inl > 0) {
+ magmadecrypt(&(c->cctx), in, out);
+ out += 8;
+ in += 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++) {
+ out_ptr[i] = iv[i] ^ in_ptr[i];
+ }
+ magmacrypt(&(c->cctx), out_ptr, out_ptr);
+ memcpy(iv, out_ptr, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ } else {
+ while (inl > 0) {
+ magmadecrypt(&(c->cctx), in_ptr, b);
+ memcpy(d, in_ptr, 8);
+ for (i = 0; i < 8; i++) {
+ out_ptr[i] = iv[i] ^ b[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;
+/* Process partial blocks */
+ while ((num & MAGMA_BLOCK_MASK) && lasted) {
+ *out_ptr++ = *in_ptr++ ^ buf[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);
+ magmacrypt(&(c->cctx), iv, buf);
+ for (j = 0; j < 8; j++) {
+ out_ptr[j] = buf[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);
+ magmacrypt(&(c->cctx), iv, buf);
+
+ for (i = 0; i < lasted; i++)
+ out_ptr[i] = buf[i] ^ in_ptr[i];
+ ctr64_inc(iv);
+ c->count += 8;
+ 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;
+}
+
+static int gost_magma_cipher_do_mgm(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int enc = EVP_CIPHER_CTX_encrypting(ctx);
+
+ /* If not set up, return error */
+ if (!mctx->key_set) {
+ GOSTerr(GOST_F_GOST_MAGMA_CIPHER_DO_MGM,
+ GOST_R_BAD_ORDER);
+ return -1;
+ }
+
+ if (!mctx->iv_set) {
+ GOSTerr(GOST_F_GOST_MAGMA_CIPHER_DO_MGM,
+ GOST_R_BAD_ORDER);
+ return -1;
+ }
+ if (in) {
+ if (out == NULL) {
+ if (gost_mgm128_aad(&mctx->mgm, in, len))
+ return -1;
+ } else if (enc) {
+ if (gost_mgm128_encrypt(&mctx->mgm, in, out, len))
+ return -1;
+ } else {
+ if (gost_mgm128_decrypt(&mctx->mgm, in, out, len))
+ return -1;
+ }
+ return len;
+ } else {
+ if (!enc) {
+ if (mctx->taglen < 0)
+ return -1;
+ if (gost_mgm128_finish(&mctx->mgm,
+ EVP_CIPHER_CTX_buf_noconst(ctx),
+ mctx->taglen) != 0)
+ return -1;
+ mctx->iv_set = 0;
+ return 0;
+ }
+ gost_mgm128_tag(&mctx->mgm, EVP_CIPHER_CTX_buf_noconst(ctx), 8);
+ mctx->taglen = 8;
+ /* Don't reuse the IV */
+ mctx->iv_set = 0;
+ return 0;
+ }
+
+}
+
/* 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;
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);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
/* process partial block if any */
if (EVP_CIPHER_CTX_num(ctx)) {
for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
}
}
- 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(EVP_CIPHER_CTX_cipher_data(ctx), iv, buf);
+ gost_crypt_mesh(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
/*
* xor next block of input text with it and output it
*/
}
/* Process rest of buffer */
if (i < inl) {
- gost_crypt_mesh(EVP_CIPHER_CTX_cipher_data(ctx), iv, buf);
+ 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++) {
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);
+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
/* process partial block if any */
if (EVP_CIPHER_CTX_num(ctx)) {
for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
}
}
- 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(EVP_CIPHER_CTX_cipher_data(ctx), iv, buf);
+ gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
/*
* xor next block of input text with it and output it
*/
}
/* Process rest of buffer */
if (i < inl) {
- gost_cnt_next(EVP_CIPHER_CTX_cipher_data(ctx), iv, buf);
+ gost_cnt_next(EVP_CIPHER_CTX_get_cipher_data(ctx), iv, buf);
for (j = 0; i < inl; j++, i++) {
out_ptr[j] = buf[j] ^ in_ptr[j];
}
}
/* 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 *)EVP_CIPHER_CTX_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;
}
-/* Control function for gost cipher */
-int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+static int gost_magma_mgm_cleanup(EVP_CIPHER_CTX *c)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(c);
+ if (mctx == NULL)
+ return 0;
+ gost_destroy(&mctx->ks.g_ks.cctx);
+ OPENSSL_cleanse(&mctx->mgm, sizeof(mctx->mgm));
+ EVP_CIPHER_CTX_set_app_data(c, NULL);
+ return 1;
+}
+
+static int gost_magma_mgm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(c);
+ unsigned char *buf, *iv;
+ int ivlen, enc;
+
switch (type) {
-#if 0
case EVP_CTRL_INIT:
- {
- struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_cipher_data(ctx);
- if (c == NULL) {
- return -1;
- }
- return gost_cipher_set_param(c, arg);
+ ivlen = EVP_CIPHER_iv_length(EVP_CIPHER_CTX_cipher(c));
+ iv = EVP_CIPHER_CTX_iv_noconst(c);
+ mctx->key_set = 0;
+ mctx->iv_set = 0;
+ mctx->ivlen = ivlen;
+ mctx->iv = iv;
+ mctx->taglen = -1;
+ return 1;
+
+ case EVP_CTRL_GET_IVLEN:
+ *(int *)ptr = mctx->ivlen;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg <= 0)
+ return 0;
+ if ((arg > EVP_MAX_IV_LENGTH) && (arg > mctx->ivlen)) {
+ // TODO: Allocate memory for IV or set error
+ return 0;
}
-#endif
+ mctx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (arg <= 0 || arg != 8 || enc) {
+ GOSTerr(GOST_F_GOST_MAGMA_MGM_CTRL,
+ GOST_R_INVALID_TAG_LENGTH);
+ return 0;
+ }
+ memcpy(buf, ptr, arg);
+ mctx->taglen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (arg <= 0 || arg > 8 || !enc || mctx->taglen < 0) {
+ GOSTerr(GOST_F_GOST_MAGMA_MGM_CTRL,
+ GOST_R_INVALID_TAG_LENGTH);
+ return 0;
+ }
+ memcpy(ptr, buf, arg);
+ return 1;
+
+ default:
+ return -1;
+ }
+}
+
+/* Control function for gost cipher */
+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, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
+ 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;
}
case EVP_CTRL_SET_SBOX:
if (ptr) {
- struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_cipher_data(ctx);
+ struct ossl_gost_cipher_ctx *c =
+ EVP_CIPHER_CTX_get_cipher_data(ctx);
int nid;
int cur_meshing;
int ret;
c->key_meshing = cur_meshing;
return ret;
} else {
- return 0;
+ return 0;
}
case EVP_CTRL_KEY_MESH:
{
- struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_cipher_data(ctx);
+ 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);
+ 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_MAGMA_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;
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_GOST_CIPHER_CTL,
- GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
+ 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 = EVP_CIPHER_CTX_cipher_data(ctx);
+ 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, ERR_R_MALLOC_FAILURE);
return 0;
}
- if (!ASN1_OCTET_STRING_set(gcp->iv, EVP_CIPHER_CTX_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx))) {
+ 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, ERR_R_MALLOC_FAILURE);
return 0;
}
/* 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 = EVP_CIPHER_CTX_cipher_data(ctx);
+ 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;
GOST_CIPHER_PARAMS_free(gcp);
return -1;
}
- /*XXX missing non-const accessor*/
+ /*XXX missing non-const accessor */
memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), gcp->iv->data,
- EVP_CIPHER_CTX_iv_length(ctx));
+ EVP_CIPHER_CTX_iv_length(ctx));
GOST_CIPHER_PARAMS_free(gcp);
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;
}
-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 = 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 = EVP_MD_CTX_md_data(ctx);
if (!c->key_set) {
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:
{
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) {
+ 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;
}
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) {
}
}
-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)
{
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),
}
/* Clean up imit ctx */
-int gost_imit_cleanup(EVP_MD_CTX *ctx)
+static int gost_imit_cleanup(EVP_MD_CTX *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 : */
projects / openssl-gost / engine.git / blobdiff