char *out, int *outl);
int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);
-void ERR_load_EVP_strings(void );
-
void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);
int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);