--- /dev/null
+/*
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is the Netscape security libraries.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation. Portions created by Netscape are
+ * Copyright (C) 1994-2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License Version 2 or later (the
+ * "GPL"), in which case the provisions of the GPL are applicable
+ * instead of those above. If you wish to allow use of your
+ * version of this file only under the terms of the GPL and not to
+ * allow others to use your version of this file under the MPL,
+ * indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by
+ * the GPL. If you do not delete the provisions above, a recipient
+ * may use your version of this file under either the MPL or the
+ * GPL.
+ */
+
+/*
+ * CMS digestedData methods.
+ */
+
+#include <Security/SecCmsDigestedData.h>
+
+#include <Security/SecCmsContentInfo.h>
+#include <Security/SecCmsDigestContext.h>
+
+#include "cmslocal.h"
+
+#include "secitem.h"
+#include "secoid.h"
+#include <security_asn1/secasn1.h>
+#include <security_asn1/secerr.h>
+
+/*
+ * SecCmsDigestedDataCreate - create a digestedData object (presumably for encoding)
+ *
+ * version will be set by SecCmsDigestedDataEncodeBeforeStart
+ * digestAlg is passed as parameter
+ * contentInfo must be filled by the user
+ * digest will be calculated while encoding
+ */
+SecCmsDigestedDataRef
+SecCmsDigestedDataCreate(SecCmsMessageRef cmsg, SECAlgorithmID *digestalg)
+{
+ void *mark;
+ SecCmsDigestedDataRef digd;
+ PLArenaPool *poolp;
+
+ poolp = cmsg->poolp;
+
+ mark = PORT_ArenaMark(poolp);
+
+ digd = (SecCmsDigestedDataRef)PORT_ArenaZAlloc(poolp, sizeof(SecCmsDigestedData));
+ 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;
+}
+
+/*
+ * SecCmsDigestedDataDestroy - destroy a digestedData object
+ */
+void
+SecCmsDigestedDataDestroy(SecCmsDigestedDataRef digd)
+{
+ /* everything's in a pool, so don't worry about the storage */
+ SecCmsContentInfoDestroy(&(digd->contentInfo));
+ return;
+}
+
+/*
+ * SecCmsDigestedDataGetContentInfo - return pointer to digestedData object's contentInfo
+ */
+SecCmsContentInfoRef
+SecCmsDigestedDataGetContentInfo(SecCmsDigestedDataRef digd)
+{
+ return &(digd->contentInfo);
+}
+
+/*
+ * SecCmsDigestedDataEncodeBeforeStart - 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.
+ */
+OSStatus
+SecCmsDigestedDataEncodeBeforeStart(SecCmsDigestedDataRef digd)
+{
+ unsigned long version;
+ CSSM_DATA_PTR dummy;
+
+ version = SEC_CMS_DIGESTED_DATA_VERSION_DATA;
+ if (SecCmsContentInfoGetContentTypeTag(&(digd->contentInfo)) != SEC_OID_PKCS7_DATA)
+ version = SEC_CMS_DIGESTED_DATA_VERSION_ENCAP;
+
+ dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version);
+ return (dummy == NULL) ? SECFailure : SECSuccess;
+}
+
+/*
+ * SecCmsDigestedDataEncodeBeforeData - 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
+ */
+OSStatus
+SecCmsDigestedDataEncodeBeforeData(SecCmsDigestedDataRef digd)
+{
+ /* set up the digests */
+ if (digd->digestAlg.algorithm.Length != 0 && digd->digest.Length == 0) {
+ /* if digest is already there, do nothing */
+ digd->contentInfo.digcx = SecCmsDigestContextStartSingle(&(digd->digestAlg));
+ if (digd->contentInfo.digcx == NULL)
+ return SECFailure;
+ }
+ return SECSuccess;
+}
+
+/*
+ * SecCmsDigestedDataEncodeAfterData - do all the necessary things to a DigestedData
+ * after all the encapsulated data was passed through the encoder.
+ *
+ * In detail:
+ * - finish the digests
+ */
+OSStatus
+SecCmsDigestedDataEncodeAfterData(SecCmsDigestedDataRef digd)
+{
+ OSStatus rv = SECSuccess;
+ /* did we have digest calculation going on? */
+ if (digd->contentInfo.digcx) {
+ rv = SecCmsDigestContextFinishSingle(digd->contentInfo.digcx,
+ (SecArenaPoolRef)digd->cmsg->poolp, &(digd->digest));
+ /* error has been set by SecCmsDigestContextFinishSingle */
+ digd->contentInfo.digcx = NULL;
+ }
+
+ return rv;
+}
+
+/*
+ * SecCmsDigestedDataDecodeBeforeData - 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
+ */
+OSStatus
+SecCmsDigestedDataDecodeBeforeData(SecCmsDigestedDataRef digd)
+{
+ /* is there a digest algorithm yet? */
+ if (digd->digestAlg.algorithm.Length == 0)
+ return SECFailure;
+
+ digd->contentInfo.digcx = SecCmsDigestContextStartSingle(&(digd->digestAlg));
+ if (digd->contentInfo.digcx == NULL)
+ return SECFailure;
+
+ return SECSuccess;
+}
+
+/*
+ * SecCmsDigestedDataDecodeAfterData - do all the necessary things to a DigestedData
+ * after all the encapsulated data was passed through the encoder.
+ *
+ * In detail:
+ * - finish the digests
+ */
+OSStatus
+SecCmsDigestedDataDecodeAfterData(SecCmsDigestedDataRef digd)
+{
+ OSStatus rv = SECSuccess;
+ /* did we have digest calculation going on? */
+ if (digd->contentInfo.digcx) {
+ rv = SecCmsDigestContextFinishSingle(digd->contentInfo.digcx,
+ (SecArenaPoolRef)digd->cmsg->poolp, &(digd->cdigest));
+ /* error has been set by SecCmsDigestContextFinishSingle */
+ digd->contentInfo.digcx = NULL;
+ }
+
+ return rv;
+}
+
+/*
+ * SecCmsDigestedDataDecodeAfterEnd - finalize a digestedData.
+ *
+ * In detail:
+ * - check the digests for equality
+ */
+OSStatus
+SecCmsDigestedDataDecodeAfterEnd(SecCmsDigestedDataRef digd)
+{
+ /* did we have digest calculation going on? */
+ if (digd->cdigest.Length != 0) {
+ /* XXX comparision btw digest & cdigest */
+ /* XXX set status */
+ /* TODO!!!! */
+ }
+
+ return SECSuccess;
+}
projects / apple / security.git / blobdiff