romulus-pbkdf2.h File Reference

Password-based key derivation function based on Romulus-HMAC. More...

#include <stddef.h>

Go to the source code of this file.

Macros
#define	ROMULUS_PBKDF2_SIZE   32
	Default output block size for Romulus-PBKDF2. Key material is generated in blocks of this size.

Functions
void	romulus_pbkdf2 (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 Romulus-PBKDF2. More...

Detailed Description

Password-based key derivation function based on Romulus-HMAC.

Reference: https://tools.ietf.org/html/rfc8018

Function Documentation

void romulus_pbkdf2	(	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 Romulus-PBKDF2.

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) * ROMULUS_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.