ascon-pbkdf2-hmac.c File Reference

#include <ascon/pbkdf2.h>
#include <ascon/hmac.h>
#include <ascon/utility.h>
#include "core/ascon-util.h"
#include <string.h>

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Functions
void	ascon_pbkdf2_hmac (unsigned char *out, size_t outlen, const unsigned char *password, size_t passwordlen, const unsigned char *salt, size_t saltlen, unsigned long count)
	Derives key material using ASCON-PBKDF2 (legacy HMAC version). More...

Function Documentation

ascon_pbkdf2_hmac()

void ascon_pbkdf2_hmac	(	unsigned char *	out,
		size_t	outlen,
		const unsigned char *	password,
		size_t	passwordlen,
		const unsigned char *	salt,
		size_t	saltlen,
		unsigned long	count
	)

Derives key material using ASCON-PBKDF2 (legacy HMAC version).

Parameters

out	Points to the output buffer to receive the key material.
outlen	Number of bytes of key material to generate.
password	Points to the bytes of the password.
passwordlen	Number of bytes in the password.
salt	Points to the bytes of the salt.
saltlen	Number of bytes in the salt.
count	Number of iterations to perform. If this is set to zero, then the value will be changed to 1.

This function can generate a maximum of (2^32 - 1) * ASCON_PBKDF2_SIZE bytes, but this limit is not checked. The count value should be large enough to provide resistance against dictionary attacks on the password.

Note

This function uses ASCON-HMAC to implement the pseudorandom function PRF from RFC 8018 for compatibility with existing designs.

Definition at line 58 of file ascon-pbkdf2-hmac.c.