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/* lib/crypto/openssl/md5/md5.c
*
* Copyright (C) 2009 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "k5-int.h"
#include "rsa-md5.h"
#include "pk11pub.h"
#include "nss_gen.h"
/* The routine krb5int_MD5Init initializes the message-digest context
mdContext.
*/
void
krb5int_MD5Init (krb5_MD5_CTX *mdContext)
{
if (k5_nss_init()) {
mdContext->nss_ctxt = NULL;
return;
}
mdContext->nss_ctxt = PK11_CreateDigestContext(SEC_OID_MD5);
if (mdContext->nss_ctxt == NULL) {
return;
}
PK11_DigestBegin((PK11Context *)mdContext->nss_ctxt);
}
/* The routine krb5int_MD5Update updates the message-digest context to
account for the presence of each of the characters inBuf[0..inLen-1]
in the message whose digest is being computed.
*/
void
krb5int_MD5Update (krb5_MD5_CTX *mdContext, const unsigned char *inBuf, unsigned int inLen)
{
if (mdContext->nss_ctxt == NULL) {
return;
}
PK11_DigestOp((PK11Context *)mdContext->nss_ctxt, inBuf, inLen);
}
/* The routine krb5int_MD5Final terminates the message-digest computation and
ends with the desired message digest in mdContext->digest[0...15].
*/
void
krb5int_MD5Final (krb5_MD5_CTX *mdContext)
{
unsigned int digestLength;
if (mdContext->nss_ctxt == NULL) {
return;
}
PK11_DigestFinal((PK11Context *)mdContext->nss_ctxt, mdContext->digest,
&digestLength, sizeof (mdContext->digest));
/* since there is not separate cleanup step, free the context now.
* (otherwise we could have reused the context for another MD5 operation
* in the future).
*/
PK11_DestroyContext((PK11Context *)mdContext->nss_ctxt, PR_TRUE);
mdContext->nss_ctxt = NULL;
}
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