-#ifndef NOPROTO
-static void null_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
-static void null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl);
-#else
-static void null_init_key();
-static void null_cipher();
-#endif