| /* 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 */ |
| if (digd != NULL) { |
| 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; |
| } |