mirror of
https://gitlab.isc.org/isc-projects/bind9
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76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#include <stdio.h>
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#include <isc/md.h>
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#include <isc/iterated_hash.h>
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#include <isc/util.h>
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int
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isc_iterated_hash(unsigned char *out,
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const unsigned int hashalg, const int iterations,
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const unsigned char *salt, const int saltlength,
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const unsigned char *in, const int inlength)
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{
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isc_md_t *md;
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isc_result_t result;
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int n = 0;
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unsigned int outlength = 0;
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size_t len;
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const unsigned char *buf;
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REQUIRE(out != NULL);
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if (hashalg != 1) {
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return (0);
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}
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if ((md = isc_md_new()) == NULL) {
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return (0);
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}
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len = inlength;
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buf = in;
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do {
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result = isc_md_init(md, ISC_MD_SHA1);
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if (result != ISC_R_SUCCESS) {
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goto md_fail;
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}
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result = isc_md_update(md, buf, len);
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if (result != ISC_R_SUCCESS) {
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goto md_fail;
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}
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result = isc_md_update(md, salt, saltlength);
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if (result != ISC_R_SUCCESS) {
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goto md_fail;
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}
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result = isc_md_final(md, out, &outlength);
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if (result != ISC_R_SUCCESS) {
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goto md_fail;
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}
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result = isc_md_reset(md);
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if (result != ISC_R_SUCCESS) {
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goto md_fail;
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}
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buf = out;
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len = outlength;
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} while (n++ < iterations);
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isc_md_free(md);
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return (outlength);
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md_fail:
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isc_md_free(md);
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return (0);
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}
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#undef RETERR
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