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[uclibc-ng.git] / libcrypt / crypt.c

/*
 * crypt() for uClibc
 * Copyright (C) 2000-2006 by Erik Andersen <[email protected]>
 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 */

#include <unistd.h>
#include <crypt.h>
#include <errno.h>
#include "libcrypt.h"

char *crypt(const char *key, const char *salt)
{
	const unsigned char *ukey = (const unsigned char *)key;
	const unsigned char *usalt = (const unsigned char *)salt;

	if (salt[0] == '$') {
		if (salt[1] && salt[2] == '$') { /* no blowfish '2X' here ATM */
			if (*++salt == '1')
				return __md5_crypt(ukey, usalt);
#ifdef __UCLIBC_HAS_SHA256_CRYPT_IMPL__
			else if (*salt == '5')
				return __sha256_crypt(ukey, usalt);
#endif
#ifdef __UCLIBC_HAS_SHA512_CRYPT_IMPL__
			else if (*salt == '6')
				return __sha512_crypt(ukey, usalt);
#endif
		}
		__set_errno(EINVAL);
		return NULL;
	}
	return __des_crypt(ukey, usalt);
}