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

#include <stddef.h>

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

m	Buffer to receive the plaintext message on output.
mlen	Receives the length of the plaintext message on output.
c	Buffer that contains the ciphertext and authentication tag to decrypt.
clen	Length of the input data in bytes, which includes the ciphertext and the 16 byte authentication tag.
ad	Buffer that contains associated data to authenticate along with the packet but which does not need to be encrypted.
adlen	Length of the associated data in bytes.
npub	Points to the public nonce for the packet which must be 16 bytes in length.
k	Points 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.

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

c	Buffer to receive the output.
clen	On exit, set to the length of the output which includes the ciphertext and the 16 byte authentication tag.
m	Buffer that contains the plaintext message to encrypt.
mlen	Length of the plaintext message in bytes.
ad	Buffer that contains associated data to authenticate along with the packet but which does not need to be encrypted.
adlen	Length of the associated data in bytes.
npub	Points to the public nonce for the packet which must be 16 bytes in length.
k	Points 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.