};
static EVP_CIPHER *gost_grasshopper_ciphers[6] = {
- [GRASSHOPPER_CIPHER_ECB] = NULL,
- [GRASSHOPPER_CIPHER_CBC] = NULL,
- [GRASSHOPPER_CIPHER_OFB] = NULL,
- [GRASSHOPPER_CIPHER_CFB] = NULL,
- [GRASSHOPPER_CIPHER_CTR] = NULL,
- [GRASSHOPPER_CIPHER_CTRACPKM] = NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL,
};
static GRASSHOPPER_INLINE void
};
static struct GRASSHOPPER_CIPHER_PARAMS gost_cipher_params[6] = {
- [GRASSHOPPER_CIPHER_ECB] = {
+ {
NID_grasshopper_ecb,
gost_grasshopper_cipher_init_ecb,
gost_grasshopper_cipher_do_ecb,
0,
true}
,
- [GRASSHOPPER_CIPHER_CBC] = {
+ {
NID_grasshopper_cbc,
gost_grasshopper_cipher_init_cbc,
gost_grasshopper_cipher_do_cbc,
16,
true}
,
- [GRASSHOPPER_CIPHER_OFB] = {
+ {
NID_grasshopper_ofb,
gost_grasshopper_cipher_init_ofb,
gost_grasshopper_cipher_do_ofb,
16,
false}
,
- [GRASSHOPPER_CIPHER_CFB] = {
+ {
NID_grasshopper_cfb,
gost_grasshopper_cipher_init_cfb,
gost_grasshopper_cipher_do_cfb,
16,
false}
,
- [GRASSHOPPER_CIPHER_CTR] = {
+ {
NID_grasshopper_ctr,
gost_grasshopper_cipher_init_ctr,
gost_grasshopper_cipher_do_ctr,
16,
false}
,
- [GRASSHOPPER_CIPHER_CTRACPKM] = {
+ {
NID_id_tc26_cipher_gostr3412_2015_kuznyechik_ctracpkm,
gost_grasshopper_cipher_init_ctracpkm,
gost_grasshopper_cipher_do_ctracpkm,
unsigned int n = EVP_CIPHER_CTX_num(ctx);
size_t lasted;
size_t i;
+ size_t blocks;
+ grasshopper_w128_t *iv_buffer;
+ grasshopper_w128_t tmp;
while (n && inl) {
*(current_out++) = *(current_in++) ^ c->partial_buffer.b[n];
n = (n + 1) % GRASSHOPPER_BLOCK_SIZE;
}
EVP_CIPHER_CTX_set_num(ctx, n);
- size_t blocks = inl / GRASSHOPPER_BLOCK_SIZE;
+ blocks = inl / GRASSHOPPER_BLOCK_SIZE;
- grasshopper_w128_t *iv_buffer = (grasshopper_w128_t *) iv;
- grasshopper_w128_t tmp;
+ iv_buffer = (grasshopper_w128_t *) iv;
// full parts
for (i = 0; i < blocks; i++) {
gost_grasshopper_cipher_ctx_ctr *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
unsigned int num = EVP_CIPHER_CTX_num(ctx);
+ size_t blocks, i, lasted;
+ grasshopper_w128_t tmp;
while ((num & GRASSHOPPER_BLOCK_MASK) && inl) {
*out++ = *in++ ^ c->partial_buffer.b[num & GRASSHOPPER_BLOCK_MASK];
--inl;
num++;
}
- size_t blocks = inl / GRASSHOPPER_BLOCK_SIZE;
- size_t i;
- grasshopper_w128_t tmp;
+ blocks = inl / GRASSHOPPER_BLOCK_SIZE;
// full parts
for (i = 0; i < blocks; i++) {
}
// last part
- size_t lasted = inl - blocks * GRASSHOPPER_BLOCK_SIZE;
+ lasted = inl - blocks * GRASSHOPPER_BLOCK_SIZE;
if (lasted > 0) {
apply_acpkm_grasshopper(c, &num);
grasshopper_encrypt_block(&c->c.encrypt_round_keys,
int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
+ struct GRASSHOPPER_CIPHER_PARAMS *params;
gost_grasshopper_cipher_ctx *c =
(gost_grasshopper_cipher_ctx *) EVP_CIPHER_CTX_get_cipher_data(ctx);
if (!c)
return 1;
- struct GRASSHOPPER_CIPHER_PARAMS *params = &gost_cipher_params[c->type];
+ params = &gost_cipher_params[c->type];
gost_grasshopper_cipher_destroy(c);
if (params->destroy_cipher != NULL) {
unsigned char adjusted_iv[16];
unsigned char seq[8];
- int j;
+ int j, carry;
if (mode != EVP_CIPH_CTR_MODE)
return -1;
(const unsigned char *)seq) > 0) {
memset(adjusted_iv, 0, 16);
memcpy(adjusted_iv, EVP_CIPHER_CTX_original_iv(ctx), 8);
- for(j=7; j>=0; j--)
+ for(j=7,carry=0; j>=0; j--)
{
- int adj_byte, carry = 0;
- adj_byte = adjusted_iv[j]+seq[j]+carry;
+ int adj_byte = adjusted_iv[j]+seq[j]+carry;
carry = (adj_byte > 255) ? 1 : 0;
adjusted_iv[j] = adj_byte & 0xFF;
}
cipher = &gost_grasshopper_ciphers[num];
if (*cipher == NULL) {
+ grasshopper_init_cipher_func init_cipher;
+ int nid, block_size, ctx_size, iv_size;
+ bool padding;
+
params = &gost_cipher_params[num];
- int nid = params->nid;
- grasshopper_init_cipher_func init_cipher = params->init_cipher;
- int block_size = params->block_size;
- int ctx_size = params->ctx_size;
- int iv_size = params->iv_size;
- bool padding = params->padding;
+ nid = params->nid;
+ init_cipher = params->init_cipher;
+ block_size = params->block_size;
+ ctx_size = params->ctx_size;
+ iv_size = params->iv_size;
+ padding = params->padding;
*cipher = cipher_gost_grasshopper_create(nid, block_size);
if (*cipher == NULL) {