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,
/* 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);
NULL,
};
+EVP_CIPHER cipher_gost_cbc = {
+ NID_gost89_cbc,
+ 8, /*block_size */
+ 32, /*key_size */
+ 8, /*iv_len */
+ EVP_CIPH_CBC_MODE |
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
+ gost_cipher_init_cbc,
+ gost_cipher_do_cbc,
+ gost_cipher_cleanup,
+ sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
+ gost89_set_asn1_parameters,
+ gost89_get_asn1_parameters,
+ gost_cipher_ctl,
+ NULL,
+};
+
EVP_CIPHER cipher_gost_cpacnt = {
NID_gost89_cnt,
1, /* block_size */
/* 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
-};
+static EVP_MD *_hidden_Gost28147_89_MAC_md = NULL;
+static EVP_MD *_hidden_Gost28147_89_12_MAC_md = NULL;
-EVP_MD imit_gost_cp_12 = {
- NID_gost_mac_12,
- NID_undef,
- 4,
- 0,
- gost_imit_init_cp_12,
- 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
-};
+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;
+}
+
+void imit_gost_cp_12_destroy(void)
+{
+ EVP_MD_meth_free(_hidden_Gost28147_89_12_MAC_md);
+ _hidden_Gost28147_89_12_MAC_md = NULL;
+}
/*
* Correspondence between gost parameter OIDs and substitution blocks
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[5];
+ 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) {
EVP_CIPH_CFB_MODE);
}
+/* Initializes EVP_CIPHER_CTX with default values */
+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);
+}
+
/*
* 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,
+ 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 = ctx->cipher_data;
+ if (ctx->encrypt) {
+ while (inl > 0) {
+ for (i = 0; i < 8; i++) {
+ b[i] = ctx->iv[i] ^ in_ptr[i];
+ }
+ gostcrypt(&(c->cctx), b, out_ptr);
+ memcpy(ctx->iv, out_ptr, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ } else {
+ while (inl > 0) {
+ gostdecrypt(&(c->cctx), in_ptr, b);
+ for (i = 0; i < 8; i++) {
+ out_ptr[i] = ctx->iv[i] ^ b[i];
+ }
+ memcpy(ctx->iv, in_ptr, 8);
+ out_ptr += 8;
+ in_ptr += 8;
+ inl -= 8;
+ }
+ }
+ return 1;
+}
+
/* GOST encryption in CFB mode */
int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
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);
+ GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
return -1;
}
break;
static int gost_imit_init(EVP_MD_CTX *ctx, gost_subst_block * block)
{
- struct ossl_gost_imit_ctx *c = ctx->md_data;
+ 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;
+ c->dgst_size = 4;
gost_init(&(c->cctx), block);
return 1;
}
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;
if (!(c->key_set)) {
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;
}
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_DigestInit(ctx, EVP_MD_CTX_md(ctx)) <= 0) {
+ GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
-
- gost_key(&(((struct ossl_gost_imit_ctx *)(ctx->md_data))->cctx),
- ptr);
- ((struct ossl_gost_imit_ctx *)(ctx->md_data))->key_set = 1;
+ EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_NO_INIT);
+
+ 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_MAC_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)
{
- 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)
{
- 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;
}
projects / openssl-gost / engine.git / blobdiff