-GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_create(int
- cipher_type, int
- block_size)
-{
- return EVP_CIPHER_meth_new(cipher_type, block_size /* block_size */ ,
- GRASSHOPPER_KEY_SIZE /* key_size */ );
-}
-
-const int cipher_gost_grasshopper_setup(EVP_CIPHER *cipher, uint8_t mode,
- int iv_size, bool padding, int extra_flags)
-{
- unsigned long flags = (unsigned long)(mode
- | ((!padding) ? EVP_CIPH_NO_PADDING : 0)
- | ((iv_size > 0) ? EVP_CIPH_CUSTOM_IV : 0)
- | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT
- | extra_flags);
-
- return EVP_CIPHER_meth_set_iv_length(cipher, iv_size)
- && EVP_CIPHER_meth_set_flags(cipher, flags)
- && EVP_CIPHER_meth_set_cleanup(cipher, gost_grasshopper_cipher_cleanup)
- && EVP_CIPHER_meth_set_set_asn1_params(cipher,
- gost_grasshopper_set_asn1_parameters)
- && EVP_CIPHER_meth_set_get_asn1_params(cipher,
- gost_grasshopper_get_asn1_parameters)
- && EVP_CIPHER_meth_set_ctrl(cipher, gost_grasshopper_cipher_ctl)
- && EVP_CIPHER_meth_set_do_cipher(cipher, gost_grasshopper_cipher_do);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper(uint8_t mode,
- uint8_t num)
-{
- EVP_CIPHER **cipher;
- struct GRASSHOPPER_CIPHER_PARAMS *params;
-
- cipher = &gost_grasshopper_ciphers[num];
-
- if (*cipher == NULL) {
- grasshopper_init_cipher_func init_cipher;
- int nid, block_size, ctx_size, iv_size, extra_flags;
- bool padding;
-
- params = &gost_cipher_params[num];
-
- 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;
- extra_flags = params->extra_flags;
-
- *cipher = cipher_gost_grasshopper_create(nid, block_size);
- if (*cipher == NULL) {
- return NULL;
- }
-
- if (!cipher_gost_grasshopper_setup(*cipher, mode, iv_size, padding, extra_flags)
- || !EVP_CIPHER_meth_set_init(*cipher, init_cipher)
- || !EVP_CIPHER_meth_set_impl_ctx_size(*cipher, ctx_size)) {
- EVP_CIPHER_meth_free(*cipher);
- *cipher = NULL;
- }
- }
-
- return *cipher;
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ecb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_ECB_MODE, GRASSHOPPER_CIPHER_ECB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_cbc()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CBC_MODE, GRASSHOPPER_CIPHER_CBC);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ofb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_OFB_MODE, GRASSHOPPER_CIPHER_OFB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_cfb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CFB_MODE, GRASSHOPPER_CIPHER_CFB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctr()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE, GRASSHOPPER_CIPHER_CTR);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctracpkm()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE,
- GRASSHOPPER_CIPHER_CTRACPKM);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctracpkm_omac()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE,
- GRASSHOPPER_CIPHER_CTRACPKMOMAC);
-}
-
-void cipher_gost_grasshopper_destroy(void)