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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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210
security/nss/lib/smime/cmsdigdata.c Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* CMS digestedData methods.
*/
#include "cmslocal.h"
#include "secitem.h"
#include "secasn1.h"
#include "secoid.h"
#include "secerr.h"
/*
* NSS_CMSDigestedData_Create - create a digestedData object (presumably for encoding)
*
* version will be set by NSS_CMSDigestedData_Encode_BeforeStart
* digestAlg is passed as parameter
* contentInfo must be filled by the user
* digest will be calculated while encoding
*/
NSSCMSDigestedData *
NSS_CMSDigestedData_Create(NSSCMSMessage *cmsg, SECAlgorithmID *digestalg)
{
void *mark;
NSSCMSDigestedData *digd;
PLArenaPool *poolp;
poolp = cmsg->poolp;
mark = PORT_ArenaMark(poolp);
digd = (NSSCMSDigestedData *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSDigestedData));
if (digd == NULL)
goto loser;
digd->cmsg = cmsg;
if (SECOID_CopyAlgorithmID(poolp, &(digd->digestAlg), digestalg) != SECSuccess)
goto loser;
PORT_ArenaUnmark(poolp, mark);
return digd;
loser:
PORT_ArenaRelease(poolp, mark);
return NULL;
}
/*
* NSS_CMSDigestedData_Destroy - destroy a digestedData object
*/
void
NSS_CMSDigestedData_Destroy(NSSCMSDigestedData *digd)
{
/* everything's in a pool, so don't worry about the storage */
NSS_CMSContentInfo_Destroy(&(digd->contentInfo));
return;
}
/*
* NSS_CMSDigestedData_GetContentInfo - return pointer to digestedData object's contentInfo
*/
NSSCMSContentInfo *
NSS_CMSDigestedData_GetContentInfo(NSSCMSDigestedData *digd)
{
return &(digd->contentInfo);
}
/*
* NSS_CMSDigestedData_Encode_BeforeStart - do all the necessary things to a DigestedData
* before encoding begins.
*
* In particular:
* - set the right version number. The contentInfo's content type must be set up already.
*/
SECStatus
NSS_CMSDigestedData_Encode_BeforeStart(NSSCMSDigestedData *digd)
{
unsigned long version;
SECItem *dummy;
version = NSS_CMS_DIGESTED_DATA_VERSION_DATA;
if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(
&(digd->contentInfo))))
version = NSS_CMS_DIGESTED_DATA_VERSION_ENCAP;
dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version);
return (dummy == NULL) ? SECFailure : SECSuccess;
}
/*
* NSS_CMSDigestedData_Encode_BeforeData - do all the necessary things to a DigestedData
* before the encapsulated data is passed through the encoder.
*
* In detail:
* - set up the digests if necessary
*/
SECStatus
NSS_CMSDigestedData_Encode_BeforeData(NSSCMSDigestedData *digd)
{
SECStatus rv = NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
if (rv != SECSuccess) {
return SECFailure;
}
/* set up the digests */
if (digd->digestAlg.algorithm.len != 0 && digd->digest.len == 0) {
/* if digest is already there, do nothing */
digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
if (digd->contentInfo.privateInfo->digcx == NULL)
return SECFailure;
}
return SECSuccess;
}
/*
* NSS_CMSDigestedData_Encode_AfterData - do all the necessary things to a DigestedData
* after all the encapsulated data was passed through the encoder.
*
* In detail:
* - finish the digests
*/
SECStatus
NSS_CMSDigestedData_Encode_AfterData(NSSCMSDigestedData *digd)
{
SECStatus rv = SECSuccess;
/* did we have digest calculation going on? */
if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
digd->cmsg->poolp,
&(digd->digest));
/* error has been set by NSS_CMSDigestContext_FinishSingle */
digd->contentInfo.privateInfo->digcx = NULL;
}
return rv;
}
/*
* NSS_CMSDigestedData_Decode_BeforeData - do all the necessary things to a DigestedData
* before the encapsulated data is passed through the encoder.
*
* In detail:
* - set up the digests if necessary
*/
SECStatus
NSS_CMSDigestedData_Decode_BeforeData(NSSCMSDigestedData *digd)
{
SECStatus rv;
/* is there a digest algorithm yet? */
if (digd->digestAlg.algorithm.len == 0)
return SECFailure;
rv = NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
if (rv != SECSuccess) {
return SECFailure;
}
digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
if (digd->contentInfo.privateInfo->digcx == NULL)
return SECFailure;
return SECSuccess;
}
/*
* NSS_CMSDigestedData_Decode_AfterData - do all the necessary things to a DigestedData
* after all the encapsulated data was passed through the encoder.
*
* In detail:
* - finish the digests
*/
SECStatus
NSS_CMSDigestedData_Decode_AfterData(NSSCMSDigestedData *digd)
{
SECStatus rv = SECSuccess;
/* did we have digest calculation going on? */
if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
digd->cmsg->poolp,
&(digd->cdigest));
/* error has been set by NSS_CMSDigestContext_FinishSingle */
digd->contentInfo.privateInfo->digcx = NULL;
}
return rv;
}
/*
* NSS_CMSDigestedData_Decode_AfterEnd - finalize a digestedData.
*
* In detail:
* - check the digests for equality
*/
SECStatus
NSS_CMSDigestedData_Decode_AfterEnd(NSSCMSDigestedData *digd)
{
/* did we have digest calculation going on? */
if (digd->cdigest.len != 0) {
/* XXX comparision btw digest & cdigest */
/* XXX set status */
/* TODO!!!! */
}
return SECSuccess;
}