CAST_set_key(&(ctx->c.cast_ks),EVP_CAST5_KEY_SIZE,key);
CAST_set_key(&(ctx->c.cast_ks),EVP_CIPHER_CTX_key_length(ctx),key);
static void cast_ecb_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,	     unsigned char *iv, int enc)	{	if (key != NULL)		CAST_set_key(&(ctx->c.cast_ks),EVP_CAST5_KEY_SIZE,key);	}