char *key, const unsigned
char *iv, int enc)
{
- gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
- /* NB: setting type makes EVP do_cipher callback useless */
- c->c.type = GRASSHOPPER_CIPHER_CTRACPKMOMAC;
- EVP_CIPHER_CTX_set_num(ctx, 0);
- c->section_size = 4096;
+ /* NB: setting type makes EVP do_cipher callback useless */
+ c->c.type = GRASSHOPPER_CIPHER_CTRACPKMOMAC;
+ EVP_CIPHER_CTX_set_num(ctx, 0);
+ c->section_size = 4096;
- if (key) {
- unsigned char cipher_key[32];
- c->omac_ctx = EVP_MD_CTX_new();
+ if (key) {
+ unsigned char cipher_key[32];
+ c->omac_ctx = EVP_MD_CTX_new();
- if (c->omac_ctx == NULL) {
- GOSTerr(GOST_F_GOST_GRASSHOPPER_CIPHER_INIT_CTRACPKM_OMAC, ERR_R_MALLOC_FAILURE);
- return 0;
- }
+ if (c->omac_ctx == NULL) {
+ GOSTerr(GOST_F_GOST_GRASSHOPPER_CIPHER_INIT_CTRACPKM_OMAC, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
- if (gost2015_acpkm_omac_init(NID_kuznyechik_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;
- }
+ if (gost2015_acpkm_omac_init(NID_kuznyechik_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 gost_grasshopper_cipher_init(ctx, cipher_key, iv, enc);
- }
+ return gost_grasshopper_cipher_init(ctx, cipher_key, iv, enc);
+ }
- return gost_grasshopper_cipher_init(ctx, key, iv, enc);
+ return gost_grasshopper_cipher_init(ctx, key, iv, enc);
}
static int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
ctr128_inc(iv_buffer->b);
current_in += GRASSHOPPER_BLOCK_SIZE;
current_out += GRASSHOPPER_BLOCK_SIZE;
- lasted -= GRASSHOPPER_BLOCK_SIZE;
+ lasted -= GRASSHOPPER_BLOCK_SIZE;
}
if (lasted > 0) {
in += GRASSHOPPER_BLOCK_SIZE;
out += GRASSHOPPER_BLOCK_SIZE;
num += GRASSHOPPER_BLOCK_SIZE;
- lasted -= GRASSHOPPER_BLOCK_SIZE;
+ lasted -= GRASSHOPPER_BLOCK_SIZE;
}
// last part
const unsigned char *in,
size_t inl)
{
- int result;
- gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
- /* 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 (in == NULL && inl == 0) { /* Final call */
- return gost2015_final_call(ctx, c->omac_ctx, KUZNYECHIK_MAC_MAX_SIZE, c->tag, gost_grasshopper_cipher_do_ctracpkm);
- }
-
- if (in == NULL) {
- GOSTerr(GOST_F_GOST_GRASSHOPPER_CIPHER_DO_CTRACPKM_OMAC, ERR_R_EVP_LIB);
- return -1;
- }
- result = gost_grasshopper_cipher_do_ctracpkm(ctx, out, in, inl);
-
- /* 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 result;
+ int result;
+ gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ /* 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 (in == NULL && inl == 0) { /* Final call */
+ return gost2015_final_call(ctx, c->omac_ctx, KUZNYECHIK_MAC_MAX_SIZE, c->tag, gost_grasshopper_cipher_do_ctracpkm);
+ }
+
+ if (in == NULL) {
+ GOSTerr(GOST_F_GOST_GRASSHOPPER_CIPHER_DO_CTRACPKM_OMAC, ERR_R_EVP_LIB);
+ return -1;
+ }
+ result = gost_grasshopper_cipher_do_ctracpkm(ctx, out, in, inl);
+
+ /* 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 result;
}
/*
* Fixed 128-bit IV implementation make shift regiser redundant.
static int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
- if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CTR_MODE) {
- gost_grasshopper_cipher_ctx_ctr *ctr = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CTR_MODE) {
+ gost_grasshopper_cipher_ctx_ctr *ctr = EVP_CIPHER_CTX_get_cipher_data(ctx);
- /* CMS implies 256kb section_size */
- ctr->section_size = 256*1024;
+ /* CMS implies 256kb section_size */
+ ctr->section_size = 256*1024;
- return gost2015_set_asn1_params(params, EVP_CIPHER_CTX_original_iv(ctx), 8,
- ctr->kdf_seed);
- }
- return 0;
+ return gost2015_set_asn1_params(params,
+ EVP_CIPHER_CTX_original_iv(ctx), 8, ctr->kdf_seed);
+ }
+ return 0;
}
static GRASSHOPPER_INLINE int
gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
- if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CTR_MODE) {
- gost_grasshopper_cipher_ctx_ctr *ctr = EVP_CIPHER_CTX_get_cipher_data(ctx);
+ if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CTR_MODE) {
+ gost_grasshopper_cipher_ctx_ctr *ctr = EVP_CIPHER_CTX_get_cipher_data(ctx);
- int iv_len = 16;
- unsigned char iv[16];
+ int iv_len = 16;
+ unsigned char iv[16];
- if (gost2015_get_asn1_params(params, 16, iv, 8, ctr->kdf_seed) == 0) {
- return 0;
- }
+ if (gost2015_get_asn1_params(params, 16, iv, 8, ctr->kdf_seed) == 0) {
+ return 0;
+ }
- memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, iv_len);
- memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, iv_len);
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, iv_len);
+ memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, iv_len);
- /* CMS implies 256kb section_size */
- ctr->section_size = 256*1024;
- return 1;
- }
- return 0;
+ /* CMS implies 256kb section_size */
+ ctr->section_size = 256*1024;
+ return 1;
+ }
+ return 0;
}
static int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
gost_grasshopper_cipher_ctx_ctr *c =
EVP_CIPHER_CTX_get_cipher_data(ctx);
if ((c->c.type != GRASSHOPPER_CIPHER_CTRACPKM &&
- c->c.type != GRASSHOPPER_CIPHER_CTRACPKMOMAC)
- || (arg == 0)
- || (arg % GRASSHOPPER_BLOCK_SIZE))
+ c->c.type != GRASSHOPPER_CIPHER_CTRACPKMOMAC)
+ || (arg == 0)
+ || (arg % GRASSHOPPER_BLOCK_SIZE))
return -1;
c->section_size = arg;
break;
return 1;
}
#endif
- case EVP_CTRL_PROCESS_UNPROTECTED:
+ case EVP_CTRL_PROCESS_UNPROTECTED:
{
STACK_OF(X509_ATTRIBUTE) *x = ptr;
gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
}
return 1;
case EVP_CTRL_COPY: {
- EVP_CIPHER_CTX *out = ptr;
-
- gost_grasshopper_cipher_ctx_ctr *out_cctx = EVP_CIPHER_CTX_get_cipher_data(out);
- gost_grasshopper_cipher_ctx_ctr *in_cctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
-
- if (in_cctx->c.type != GRASSHOPPER_CIPHER_CTRACPKMOMAC)
- return -1;
-
- 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_GOST_GRASSHOPPER_CIPHER_CTL, ERR_R_MALLOC_FAILURE);
- return -1;
- }
- }
- return EVP_MD_CTX_copy(out_cctx->omac_ctx, in_cctx->omac_ctx);
- }
+ EVP_CIPHER_CTX *out = ptr;
+
+ gost_grasshopper_cipher_ctx_ctr *out_cctx = EVP_CIPHER_CTX_get_cipher_data(out);
+ gost_grasshopper_cipher_ctx_ctr *in_cctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
+
+ if (in_cctx->c.type != GRASSHOPPER_CIPHER_CTRACPKMOMAC)
+ return -1;
+
+ 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_GOST_GRASSHOPPER_CIPHER_CTL, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ }
+ return EVP_MD_CTX_copy(out_cctx->omac_ctx, in_cctx->omac_ctx);
+ }
default:
GOSTerr(GOST_F_GOST_GRASSHOPPER_CIPHER_CTL,
GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
projects / openssl-gost / engine.git / blobdiff