hash_pw.c File Reference

#include <sys/types.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include "class.h"
#include "auth/storage.h"
#include "utils/memory.h"
#include "commons.h"

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Macros
#define	PBKDF2_ITERATIONS   2048

Functions
int	hash_pw (const char *password, const size_t npassword, unsigned char *hash, unsigned char **salt)

Detailed Description

Author

Georg Hopp

Copyright

Copyright © 2012 Georg Hopp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file hash_pw.c.

Macro Definition Documentation

#define PBKDF2_ITERATIONS   2048

Definition at line 38 of file hash_pw.c.

Referenced by hash_pw().

Function Documentation

int hash_pw	(	const char *	,
		const size_t	,
		unsigned char *	,
		unsigned char **
	)

Todo:

In future this should use a more general purpose hash function, which then will be in utils/hash.c

Definition at line 74 of file hash_pw.c.

References FALSE, HASH_SIZE, MEM_FREE, memCalloc(), PBKDF2_ITERATIONS, SALT_SIZE, and TRUE.

Referenced by applicationUpdatePassword(), and authStorageAuthenticate().

{
    if (NULL == *salt) {
        *salt = memCalloc(SALT_SIZE, sizeof(unsigned char));
        if (0 > RAND_pseudo_bytes(*salt, SALT_SIZE)) {
            MEM_FREE(*salt);
            return FALSE;
        }
    }

    if (0 == PKCS5_PBKDF2_HMAC(
            password,
            npassword,
            *salt,
            SALT_SIZE,
            PBKDF2_ITERATIONS,
            EVP_sha512(),
            HASH_SIZE,
            hash)) {
        MEM_FREE(*salt);
        return FALSE;
    }

    return TRUE;
}

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