// 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;
- uint64_t counter;
+ 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 enum {
+ mgm_associated_data = 0,
+ mgm_main_data,
+} mgm_state;
+
+typedef struct {
+ gost_grasshopper_cipher_ctx c;
+ grasshopper_w128_t partial_buffer;
+
+ mgm_state mgm_state; /* associated_data/plain text */
+ grasshopper_w128_t mgm_iv[16]; /* nonce */
+ grasshopper_w128_t mgm_partial_buffer; /* Rest of associated data */
+ size_t ad_length;
+ size_t taglen; /* MAC length*/
+ unsigned char tag[16]; /* MAC - intermediate state */
+ unsigned char final_tag[16]; /* MAC - final state*/
+} gost_grasshopper_cipher_ctx_mgm;
+
typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv,
int enc);
typedef void (* grasshopper_destroy_cipher_func)(gost_grasshopper_cipher_ctx* c);
-static void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k);
+void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k);
+
+void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c);
-static void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c);
+int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static 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);
-static int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
- const unsigned char* iv, int enc);
+int gost_grasshopper_cipher_init_mgm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out,
- const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
+ const unsigned char* iv, int enc);
-static int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out,
- const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out,
- const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out,
- const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static int gost_grasshopper_cipher_do_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out,
- const unsigned char* in, size_t inl);
+int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static 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_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
+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_do_mgm(EVP_CIPHER_CTX* ctx, unsigned char* out,
+ const unsigned char* in, size_t inl);
-static int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
+int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
-static int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
+int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
-static int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr);
+int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
-static EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size);
+int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr);
-static const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding);
+EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size);
-static const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num);
+const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding, int extra_flags);
+
+const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num);
extern const EVP_CIPHER* cipher_gost_grasshopper_ecb();
extern const EVP_CIPHER* cipher_gost_grasshopper_cbc();
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();
+extern const EVP_CIPHER* cipher_gost_grasshopper_mgm();
+
+void cipher_gost_grasshopper_destroy(void);
#if defined(__cplusplus)
}