#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 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);
+
static EVP_CIPHER *_hidden_Gost28147_89_cipher = NULL;
const EVP_CIPHER *cipher_gost(void)
{
sizeof(struct
ossl_gost_cipher_ctx))
|| !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr,
- gost89_set_asn1_parameters)
+ magma_set_asn1_parameters)
|| !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr, gost_cipher_ctl))) {
+ magma_get_asn1_parameters)
+ || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr, magma_cipher_ctl))) {
EVP_CIPHER_meth_free(_hidden_magma_ctr);
_hidden_magma_ctr = NULL;
}
return _hidden_magma_ctr;
}
+static EVP_CIPHER *_hidden_magma_ctr_acpkm = NULL;
+const EVP_CIPHER *cipher_magma_ctr_acpkm(void)
+{
+ 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_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_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_magma_ctr_acpkm,
+ sizeof(struct
+ ossl_gost_cipher_ctx))
+ || !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_magma_ctr_acpkm;
+}
+
+static EVP_CIPHER *_hidden_magma_ctr_acpkm_omac = NULL;
+const EVP_CIPHER *cipher_magma_ctr_acpkm_omac(void)
+{
+ 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_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_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_magma_ctr_acpkm_omac,
+ sizeof(struct
+ ossl_gost_cipher_ctx))
+ || !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_magma_ctr_acpkm_omac;
+}
+
static EVP_CIPHER *_hidden_magma_cbc = NULL;
const EVP_CIPHER *cipher_magma_cbc(void)
{
|| !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;
}
_hidden_magma_cbc = NULL;
EVP_CIPHER_meth_free(_hidden_magma_ctr);
_hidden_magma_ctr = NULL;
+ EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
+ _hidden_magma_ctr_acpkm = NULL;
+ EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
+ _hidden_magma_ctr_acpkm_omac = NULL;
}
/* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */
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,
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 (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 keys[64];
+ const EVP_MD *md = EVP_get_digestbynid(NID_magma_mac);
+ EVP_PKEY *mac_key;
+
+ if (md == NULL)
+ return 0;
+
+ if (enc) {
+ if (RAND_bytes(c->kdf_seed, 8) != 1)
+ return 0;
+ }
+
+ if (gost_kdftree2012_256(keys, 64, key, 32, (const unsigned char *)"kdf tree", 8, c->kdf_seed, 8, 1) <= 0)
+ return 0;
+
+ c->omac_ctx = EVP_MD_CTX_new();
+ mac_key = EVP_PKEY_new_mac_key(NID_magma_mac, NULL, keys+32, 32);
+
+ if (mac_key == NULL || c->omac_ctx == NULL) {
+ EVP_PKEY_free(mac_key);
+ OPENSSL_cleanse(keys, sizeof(keys));
+ return 0;
+ }
+
+ if (EVP_DigestInit_ex(c->omac_ctx, md, NULL) <= 0 ||
+ EVP_DigestSignInit(c->omac_ctx, NULL, md, NULL, mac_key) <= 0) {
+ EVP_PKEY_free(mac_key);
+ OPENSSL_cleanse(keys, sizeof(keys));
+ return 0;
+ }
+ EVP_PKEY_free(mac_key);
+ OPENSSL_cleanse(keys + 32, sizeof(keys) - 32);
+
+ return magma_cipher_init(ctx, keys, iv, enc);
+ }
+ return magma_cipher_init(ctx, key, iv, enc);
}
/*
EVP_CIPHER_CTX_set_num(ctx, 0);
} else {
EVP_CIPHER_CTX_set_num(ctx, j);
- return 1;
+ return inl;
}
}
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 */
for (j = 0; j < 8; j++) {
b[7 - j] = iv[j];
}
- gostcrypt(&(c->cctx), iv, buf);
- ctr64_inc(iv);
+ 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 1;
+ 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);
+
+ /* 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_priv_bytes
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)
{
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);
projects / openssl-gost / engine.git / commitdiff