#ifndef __GCM_H__
#define __GCM_H__

/* Sample openssl GCM code from
https://wiki.openssl.org/index.php/EVP_Authenticated_Encryption_and_Decryption
*/
int gcm_encrypt(unsigned char *plaintext, int plaintext_len,
                unsigned char *aad, int aad_len,
                unsigned char *key,
                unsigned char *iv, int iv_len,
                unsigned char *ciphertext,
                unsigned char *tag);

int gcm_decrypt(unsigned char *ciphertext, int ciphertext_len,
                unsigned char *aad, int aad_len,
                unsigned char *tag,
                unsigned char *key,
                unsigned char *iv, int iv_len,
                unsigned char *plaintext);

#endif