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encrypt.c
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Tue, Jul 8, 22:19

encrypt.c
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/**
* The implementation of the CAESAR encrypt/decrypt interface
*/
#include "api.h"
#include "paef.h"
#include "crypto_aead.h"
/**
* The CAESAR encrypt interface
* @param c A pointer to buffer for CT
* @param clen Ciphertext length in Bytes
* @param k The secret key
* @param m A pointer to the PT
* @param mlen Plaintext length in Bytes
* @param ad A pointer to associated data
* @param adlen Length of associated data in Bytes
* @param npub A pointer to the nonce
* @param nsec A pointer to secret message number (ignored)
*/
int crypto_aead_encrypt(
unsigned char *c,unsigned long long *clen,
const unsigned char *m,unsigned long long mlen,
const unsigned char *ad,unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k
) {
(void)nsec;
int res = paef_encrypt(c, m, mlen, ad, adlen, npub, k);
if (res != -1)
*clen = mlen + CRYPTO_ABYTES;
return res;
}
/**
* The CAESAR decrypt interface
* @param c A pointer to buffer for CT
* @param clen Ciphertext length in Bytes
* @param k The secret key
* @param m A pointer to the PT
* @param mlen Plaintext length in Bytes
* @param ad A pointer to associated data
* @param adlen Length of associated data in Bytes
* @param npub A pointer to the nonce
* @param nsec A pointer to secret message number (ignored)
*/
int crypto_aead_decrypt(
unsigned char *m,unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c,unsigned long long clen,
const unsigned char *ad,unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k
) {
(void)nsec;
int res = paef_decrypt(m, c, clen, ad, adlen, npub, k);
if (res != -1)
*mlen = clen - CRYPTO_ABYTES;
return res;
}

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