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part of fix for 41594 and 150212 add cram md5 to imap, smtp and pop r/sr=sspitzer

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bienvenu%netscape.com 2003-04-05 20:34:39 +00:00
parent 280243e59b
commit 98fff34f56
3 changed files with 83 additions and 1 deletions
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1
mailnews/base/util/Makefile.in
View File

@ -45,6 +45,7 @@ REQUIRES = xpcom \
pref \
rdfutil \
mime \
caps \
msgcompose \
addrbook \
docshell \

81
mailnews/base/util/nsMsgUtils.cpp
View File

@ -62,7 +62,7 @@
#include "nsICategoryManager.h"
#include "nsCategoryManagerUtils.h"
#include "nsISpamSettings.h"
#include "nsISignatureVerifier.h"
static NS_DEFINE_CID(kImapUrlCID, NS_IMAPURL_CID);
static NS_DEFINE_CID(kCMailboxUrl, NS_MAILBOXURL_CID);
@ -733,3 +733,82 @@ GetOrCreateFolder(const nsACString &aURI, nsIUrlListener *aListener)
return NS_OK;
}
// digest needs to be a pointer to a 16 byte buffer
nsresult MSGCramMD5(const char *text, PRInt32 text_len, const char *key, PRInt32 key_len, unsigned char *digest)
{
#define DIGEST_LENGTH 16
nsresult rv;
unsigned char result[DIGEST_LENGTH];
unsigned char *presult = result;
nsCOMPtr<nsISignatureVerifier> verifier = do_GetService(SIGNATURE_VERIFIER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// this code adapted from http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2104.html
char innerPad[65]; /* inner padding - key XORd with innerPad */
char outerPad[65]; /* outer padding - key XORd with outerPad */
int i;
/* if key is longer than 64 bytes reset it to key=MD5(key) */
if (key_len > 64)
{
HASHContextStr *tctx;
PRUint32 resultLen;
rv = verifier->HashBegin(nsISignatureVerifier::MD5, &tctx);
NS_ENSURE_SUCCESS(rv, rv);
rv = verifier->HashUpdate(tctx, key, key_len);
NS_ENSURE_SUCCESS(rv, rv);
rv = verifier->HashEnd(tctx, &presult, &resultLen, DIGEST_LENGTH);
NS_ENSURE_SUCCESS(rv, rv);
key = (const char *) result;
key_len = DIGEST_LENGTH;
}
/*
* the HMAC_MD5 transform looks like:
*
* MD5(K XOR outerPad, MD5(K XOR innerPad, text))
*
* where K is an n byte key
* innerPad is the byte 0x36 repeated 64 times
* outerPad is the byte 0x5c repeated 64 times
* and text is the data being protected
*/
/* start out by storing key in pads */
memset(innerPad, 0, sizeof innerPad);
memset(outerPad, 0, sizeof outerPad);
memcpy(innerPad, key, key_len);
memcpy(outerPad, key, key_len);
/* XOR key with innerPad and outerPad values */
for (i=0; i<64; i++)
{
innerPad[i] ^= 0x36;
outerPad[i] ^= 0x5c;
}
/*
* perform inner MD5
*/
HASHContextStr *context;
PRUint32 resultLen;
rv = verifier->HashBegin(nsISignatureVerifier::MD5, &context); /* init context for 1st pass */
rv = verifier->HashUpdate(context, innerPad, 64); /* start with inner pad */
rv = verifier->HashUpdate(context, text, text_len); /* then text of datagram */
rv = verifier->HashEnd(context, &presult, &resultLen, DIGEST_LENGTH); /* finish up 1st pass */
/*
* perform outer MD5
*/
verifier->HashBegin(nsISignatureVerifier::MD5, &context); /* init context for 2nd pass */
rv = verifier->HashUpdate(context, outerPad, 64); /* start with outer pad */
rv = verifier->HashUpdate(context, (const char *) result, 16); /* then results of 1st hash */
rv = verifier->HashEnd(context, &presult, &resultLen, DIGEST_LENGTH); /* finish up 2nd pass */
strncpy((char *) digest, (const char *) result, DIGEST_LENGTH);
return rv;
}

2
mailnews/base/util/nsMsgUtils.h
View File

@ -93,5 +93,7 @@ NS_MSG_BASE nsresult IsRFC822HeaderFieldName(const char *aHdr, PRBool *aResult);
*/
NS_MSG_BASE nsresult GetOrCreateFolder(const nsACString & aURI, nsIUrlListener *aListener);
// digest needs to be a pointer to a 16 byte buffer
NS_MSG_BASE nsresult MSGCramMD5(const char *text, PRInt32 text_len, const char *key, PRInt32 key_len, unsigned char *digest);
#endif