static int aria_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret;
EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,ctx);
if (!iv && !key)
return 1;
if (key) {
ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
&cctx->ks.ks);
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
&cctx->ks, (block128_f) aria_encrypt);
if (ret < 0) {
EVPerr(EVP_F_ARIA_CCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
return 0;
}
cctx->str = NULL;
cctx->key_set = 1;
}
if (iv) {
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
cctx->iv_set = 1;
}
return 1;
}
/* The subkey for ARIA is generated. */
static int aria_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret;
int mode = EVP_CIPHER_CTX_mode(ctx);
if (enc || (mode != EVP_CIPH_ECB_MODE && mode != EVP_CIPH_CBC_MODE))
ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
EVP_CIPHER_CTX_get_cipher_data(ctx));
else
ret = aria_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
EVP_CIPHER_CTX_get_cipher_data(ctx));
if (ret < 0) {
EVPerr(EVP_F_ARIA_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
static int aria_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret;
EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx);
if (!iv && !key)
return 1;
if (key) {
ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
&gctx->ks.ks);
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
(block128_f) aria_encrypt);
if (ret < 0) {
EVPerr(EVP_F_ARIA_GCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
return 0;
}
/*
* If we have an iv can set it directly, otherwise use saved IV.
*/
if (iv == NULL && gctx->iv_set)
iv = gctx->iv;
if (iv) {
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
gctx->iv_set = 1;
}
gctx->key_set = 1;
} else {
/* If key set use IV, otherwise copy */
if (gctx->key_set)
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
else
memcpy(gctx->iv, iv, gctx->ivlen);
gctx->iv_set = 1;
gctx->iv_gen = 0;
}
return 1;
}
