Lightweight Cryptography Primitives
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xoodyak-masked.h File Reference

Masked version of the Xoodyak authenticated encryption algorithm. More...

#include <stddef.h>

Go to the source code of this file.

Macros

#define XOODYAK_MASKED_KEY_SIZE   16
 Size of the key for masked Xoodyak.
 
#define XOODYAK_MASKED_TAG_SIZE   16
 Size of the authentication tag for masked Xoodyak.
 
#define XOODYAK_MASKED_NONCE_SIZE   16
 Size of the nonce for masked Xoodyak.
 

Functions

int xoodyak_masked_aead_encrypt (unsigned char *c, size_t *clen, const unsigned char *m, size_t mlen, const unsigned char *ad, size_t adlen, const unsigned char *npub, const unsigned char *k)
 Encrypts and authenticates a packet with masked Xoodyak. More...
 
int xoodyak_masked_aead_decrypt (unsigned char *m, size_t *mlen, const unsigned char *c, size_t clen, const unsigned char *ad, size_t adlen, const unsigned char *npub, const unsigned char *k)
 Decrypts and authenticates a packet with masked Xoodyak. More...
 

Detailed Description

Masked version of the Xoodyak authenticated encryption algorithm.

Function Documentation

int xoodyak_masked_aead_decrypt ( unsigned char *  m,
size_t *  mlen,
const unsigned char *  c,
size_t  clen,
const unsigned char *  ad,
size_t  adlen,
const unsigned char *  npub,
const unsigned char *  k 
)

Decrypts and authenticates a packet with masked Xoodyak.

Parameters
mBuffer to receive the plaintext message on output.
mlenReceives the length of the plaintext message on output.
cBuffer that contains the ciphertext and authentication tag to decrypt.
clenLength of the input data in bytes, which includes the ciphertext and the 16 byte authentication tag.
adBuffer that contains associated data to authenticate along with the packet but which does not need to be encrypted.
adlenLength of the associated data in bytes.
npubPoints to the public nonce for the packet which must be 16 bytes in length.
kPoints to the 16 bytes of the key to use to decrypt the packet.
Returns
0 on success, -1 if the authentication tag was incorrect, or some other negative number if there was an error in the parameters.
See Also
xoodyak_masked_aead_encrypt()
int xoodyak_masked_aead_encrypt ( unsigned char *  c,
size_t *  clen,
const unsigned char *  m,
size_t  mlen,
const unsigned char *  ad,
size_t  adlen,
const unsigned char *  npub,
const unsigned char *  k 
)

Encrypts and authenticates a packet with masked Xoodyak.

Parameters
cBuffer to receive the output.
clenOn exit, set to the length of the output which includes the ciphertext and the 16 byte authentication tag.
mBuffer that contains the plaintext message to encrypt.
mlenLength of the plaintext message in bytes.
adBuffer that contains associated data to authenticate along with the packet but which does not need to be encrypted.
adlenLength of the associated data in bytes.
npubPoints to the public nonce for the packet which must be 16 bytes in length.
kPoints to the 16 bytes of the key to use to encrypt the packet.
Returns
0 on success, or a negative value if there was an error in the parameters.
See Also
xoodyak_masked_aead_decrypt()