// because of buffers
typedef struct {
uint8_t type;
+ grasshopper_key_t master_key;
grasshopper_key_t key;
grasshopper_round_keys_t encrypt_round_keys;
grasshopper_round_keys_t decrypt_round_keys;
typedef struct {
gost_grasshopper_cipher_ctx c;
- grasshopper_w128_t buffer1;
- uint32_t g;
- uint32_t go;
-} gost_grasshopper_cipher_ctx_ofb;
-
-typedef struct {
- gost_grasshopper_cipher_ctx c;
- grasshopper_w128_t iv_buffer;
grasshopper_w128_t partial_buffer;
+ unsigned int section_size; /* After how much bytes mesh the key,
+ if 0 never mesh and work like plain ctr. */
} gost_grasshopper_cipher_ctx_ctr;
typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv,
int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_ctracpkm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+
int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
const unsigned char* iv, int enc);
int gost_grasshopper_cipher_do_ctr(EVP_CIPHER_CTX* ctx, unsigned char* out,
const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_do_ctracpkm(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
extern const EVP_CIPHER* cipher_gost_grasshopper_ofb();
extern const EVP_CIPHER* cipher_gost_grasshopper_cfb();
extern const EVP_CIPHER* cipher_gost_grasshopper_ctr();
+extern const EVP_CIPHER* cipher_gost_grasshopper_ctracpkm();
void cipher_gost_grasshopper_destroy(void);