diff options
Diffstat (limited to 'security/nss/lib/smime/cmssiginfo.c')
| -rw-r--r-- | security/nss/lib/smime/cmssiginfo.c | 885 |
1 files changed, 0 insertions, 885 deletions
diff --git a/security/nss/lib/smime/cmssiginfo.c b/security/nss/lib/smime/cmssiginfo.c deleted file mode 100644 index 4dbdcb7bf..000000000 --- a/security/nss/lib/smime/cmssiginfo.c +++ /dev/null @@ -1,885 +0,0 @@ -/* - * 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 signerInfo methods. - * - * $Id$ - */ - -#include "cmslocal.h" - -#include "cert.h" -#include "key.h" -#include "secasn1.h" -#include "secitem.h" -#include "secoid.h" -#include "pk11func.h" -#include "prtime.h" -#include "secerr.h" -#include "secder.h" -#include "cryptohi.h" - -#include "smime.h" - -/* ============================================================================= - * SIGNERINFO - */ - -NSSCMSSignerInfo * -NSS_CMSSignerInfo_Create(NSSCMSMessage *cmsg, CERTCertificate *cert, SECOidTag digestalgtag) -{ - void *mark; - NSSCMSSignerInfo *signerinfo; - int version; - PLArenaPool *poolp; - - poolp = cmsg->poolp; - - mark = PORT_ArenaMark(poolp); - - signerinfo = (NSSCMSSignerInfo *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSSignerInfo)); - if (signerinfo == NULL) { - PORT_ArenaRelease(poolp, mark); - return NULL; - } - - if ((signerinfo->cert = CERT_DupCertificate(cert)) == NULL) - goto loser; - - signerinfo->cmsg = cmsg; - - signerinfo->signerIdentifier.identifierType = NSSCMSSignerID_IssuerSN; /* hardcoded for now */ - if ((signerinfo->signerIdentifier.id.issuerAndSN = CERT_GetCertIssuerAndSN(poolp, cert)) == NULL) - goto loser; - - /* set version right now */ - version = NSS_CMS_SIGNER_INFO_VERSION_ISSUERSN; - /* RFC2630 5.3 "version is the syntax version number. If the .... " */ - if (signerinfo->signerIdentifier.identifierType == NSSCMSSignerID_SubjectKeyID) - version = NSS_CMS_SIGNER_INFO_VERSION_SUBJKEY; - (void)SEC_ASN1EncodeInteger(poolp, &(signerinfo->version), (long)version); - - if (SECOID_SetAlgorithmID(poolp, &signerinfo->digestAlg, digestalgtag, NULL) != SECSuccess) - goto loser; - - PORT_ArenaUnmark(poolp, mark); - return signerinfo; - -loser: - PORT_ArenaRelease(poolp, mark); - return NULL; -} - -/* - * NSS_CMSSignerInfo_Destroy - destroy a SignerInfo data structure - */ -void -NSS_CMSSignerInfo_Destroy(NSSCMSSignerInfo *si) -{ - if (si->cert != NULL) - CERT_DestroyCertificate(si->cert); - - if (si->certList != NULL) - CERT_DestroyCertificateList(si->certList); - - /* XXX storage ??? */ -} - -/* - * NSS_CMSSignerInfo_Sign - sign something - * - */ -SECStatus -NSS_CMSSignerInfo_Sign(NSSCMSSignerInfo *signerinfo, SECItem *digest, SECItem *contentType) -{ - CERTCertificate *cert; - SECKEYPrivateKey *privkey = NULL; - SECOidTag digestalgtag; - SECOidTag signalgtag; - SECItem signature = { 0 }; - SECStatus rv; - PLArenaPool *poolp, *tmppoolp; - - PORT_Assert (digest != NULL); - - poolp = signerinfo->cmsg->poolp; - - cert = signerinfo->cert; - - if ((privkey = PK11_FindKeyByAnyCert(cert, signerinfo->cmsg->pwfn_arg)) == NULL) - goto loser; - - digestalgtag = NSS_CMSSignerInfo_GetDigestAlgTag(signerinfo); - /* - * XXX I think there should be a cert-level interface for this, - * so that I do not have to know about subjectPublicKeyInfo... - */ - signalgtag = SECOID_GetAlgorithmTag(&(cert->subjectPublicKeyInfo.algorithm)); - - /* Fortezza MISSI have weird signature formats. Map them to standard DSA formats */ - signalgtag = PK11_FortezzaMapSig(signalgtag); - - if (signerinfo->authAttr != NULL) { - SECItem encoded_attrs; - - /* find and fill in the message digest attribute. */ - rv = NSS_CMSAttributeArray_SetAttr(poolp, &(signerinfo->authAttr), SEC_OID_PKCS9_MESSAGE_DIGEST, digest, PR_FALSE); - if (rv != SECSuccess) - goto loser; - - if (contentType != NULL) { - /* if the caller wants us to, find and fill in the content type attribute. */ - rv = NSS_CMSAttributeArray_SetAttr(poolp, &(signerinfo->authAttr), SEC_OID_PKCS9_CONTENT_TYPE, contentType, PR_FALSE); - if (rv != SECSuccess) - goto loser; - } - - if ((tmppoolp = PORT_NewArena (1024)) == NULL) { - PORT_SetError(SEC_ERROR_NO_MEMORY); - goto loser; - } - - /* - * Before encoding, reorder the attributes so that when they - * are encoded, they will be conforming DER, which is required - * to have a specific order and that is what must be used for - * the hash/signature. We do this here, rather than building - * it into EncodeAttributes, because we do not want to do - * such reordering on incoming messages (which also uses - * EncodeAttributes) or our old signatures (and other "broken" - * implementations) will not verify. So, we want to guarantee - * that we send out good DER encodings of attributes, but not - * to expect to receive them. - */ - if (NSS_CMSAttributeArray_Reorder(signerinfo->authAttr) != SECSuccess) - goto loser; - - encoded_attrs.data = NULL; - encoded_attrs.len = 0; - if (NSS_CMSAttributeArray_Encode(tmppoolp, &(signerinfo->authAttr), &encoded_attrs) == NULL) - goto loser; - - rv = SEC_SignData(&signature, encoded_attrs.data, encoded_attrs.len, privkey, - NSS_CMSUtil_MakeSignatureAlgorithm(digestalgtag, signalgtag)); - PORT_FreeArena(tmppoolp, PR_FALSE); /* awkward memory management :-( */ - } else { - rv = SGN_Digest(privkey, digestalgtag, &signature, digest); - } - - SECKEY_DestroyPrivateKey(privkey); - privkey = NULL; - - if (rv != SECSuccess) - goto loser; - - if (SECITEM_CopyItem(poolp, &(signerinfo->encDigest), &signature) != SECSuccess) - goto loser; - - SECITEM_FreeItem(&signature, PR_FALSE); - - if (SECOID_SetAlgorithmID(poolp, &(signerinfo->digestEncAlg), signalgtag, NULL) != SECSuccess) - goto loser; - - return SECSuccess; - -loser: - if (signature.len != 0) - SECITEM_FreeItem (&signature, PR_FALSE); - if (privkey) - SECKEY_DestroyPrivateKey(privkey); - return SECFailure; -} - -SECStatus -NSS_CMSSignerInfo_VerifyCertificate(NSSCMSSignerInfo *signerinfo, CERTCertDBHandle *certdb, - SECCertUsage certusage) -{ - CERTCertificate *cert; - int64 stime; - - if ((cert = NSS_CMSSignerInfo_GetSigningCertificate(signerinfo, certdb)) == NULL) { - signerinfo->verificationStatus = NSSCMSVS_SigningCertNotFound; - return SECFailure; - } - - /* - * Get and convert the signing time; if available, it will be used - * both on the cert verification and for importing the sender - * email profile. - */ - if (NSS_CMSSignerInfo_GetSigningTime (signerinfo, &stime) != SECSuccess) - stime = PR_Now(); /* not found or conversion failed, so check against now */ - - /* - * XXX This uses the signing time, if available. Additionally, we - * might want to, if there is no signing time, get the message time - * from the mail header itself, and use that. That would require - * a change to our interface though, and for S/MIME callers to pass - * in a time (and for non-S/MIME callers to pass in nothing, or - * maybe make them pass in the current time, always?). - */ - if (CERT_VerifyCert(certdb, cert, PR_TRUE, certusage, stime, signerinfo->cmsg->pwfn_arg, NULL) != SECSuccess) { - signerinfo->verificationStatus = NSSCMSVS_SigningCertNotTrusted; - return SECFailure; - } - return SECSuccess; -} - -/* - * NSS_CMSSignerInfo_Verify - verify the signature of a single SignerInfo - * - * Just verifies the signature. The assumption is that verification of the certificate - * is done already. - */ -SECStatus -NSS_CMSSignerInfo_Verify(NSSCMSSignerInfo *signerinfo, SECItem *digest, SECItem *contentType) -{ - SECKEYPublicKey *publickey = NULL; - NSSCMSAttribute *attr; - SECItem encoded_attrs; - CERTCertificate *cert; - NSSCMSVerificationStatus vs = NSSCMSVS_Unverified; - PLArenaPool *poolp; - - if (signerinfo == NULL) - return SECFailure; - - /* NSS_CMSSignerInfo_GetSigningCertificate will fail if 2nd parm is NULL and */ - /* cert has not been verified */ - if ((cert = NSS_CMSSignerInfo_GetSigningCertificate(signerinfo, NULL)) == NULL) { - vs = NSSCMSVS_SigningCertNotFound; - goto loser; - } - - if ((publickey = CERT_ExtractPublicKey(cert)) == NULL) { - vs = NSSCMSVS_ProcessingError; - goto loser; - } - - /* - * XXX This may not be the right set of algorithms to check. - * I'd prefer to trust that just calling VFY_Verify{Data,Digest} - * would do the right thing (and set an error if it could not); - * then additional algorithms could be handled by that code - * and we would Just Work. So this check should just be removed, - * but not until the VFY code is better at setting errors. - */ - switch (SECOID_GetAlgorithmTag(&(signerinfo->digestEncAlg))) { - case SEC_OID_PKCS1_RSA_ENCRYPTION: - case SEC_OID_ANSIX9_DSA_SIGNATURE: - case SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST: - /* ok */ - break; - case SEC_OID_UNKNOWN: - vs = NSSCMSVS_SignatureAlgorithmUnknown; - goto loser; - default: - vs = NSSCMSVS_SignatureAlgorithmUnsupported; - goto loser; - } - - if (!NSS_CMSArray_IsEmpty((void **)signerinfo->authAttr)) { - if (contentType) { - /* - * Check content type - * - * RFC2630 sez that if there are any authenticated attributes, - * then there must be one for content type which matches the - * content type of the content being signed, and there must - * be one for message digest which matches our message digest. - * So check these things first. - */ - if ((attr = NSS_CMSAttributeArray_FindAttrByOidTag(signerinfo->authAttr, - SEC_OID_PKCS9_CONTENT_TYPE, PR_TRUE)) == NULL) - { - vs = NSSCMSVS_MalformedSignature; - goto loser; - } - - if (NSS_CMSAttribute_CompareValue(attr, contentType) == PR_FALSE) { - vs = NSSCMSVS_MalformedSignature; - goto loser; - } - } - - /* - * Check digest - */ - if ((attr = NSS_CMSAttributeArray_FindAttrByOidTag(signerinfo->authAttr, SEC_OID_PKCS9_MESSAGE_DIGEST, PR_TRUE)) == NULL) - { - vs = NSSCMSVS_MalformedSignature; - goto loser; - } - if (NSS_CMSAttribute_CompareValue(attr, digest) == PR_FALSE) { - vs = NSSCMSVS_DigestMismatch; - goto loser; - } - - if ((poolp = PORT_NewArena (1024)) == NULL) { - vs = NSSCMSVS_ProcessingError; - goto loser; - } - - /* - * Check signature - * - * The signature is based on a digest of the DER-encoded authenticated - * attributes. So, first we encode and then we digest/verify. - * we trust the decoder to have the attributes in the right (sorted) order - */ - encoded_attrs.data = NULL; - encoded_attrs.len = 0; - - if (NSS_CMSAttributeArray_Encode(poolp, &(signerinfo->authAttr), &encoded_attrs) == NULL || - encoded_attrs.data == NULL || encoded_attrs.len == 0) - { - vs = NSSCMSVS_ProcessingError; - goto loser; - } - - vs = (VFY_VerifyData (encoded_attrs.data, encoded_attrs.len, - publickey, &(signerinfo->encDigest), - SECOID_GetAlgorithmTag(&(signerinfo->digestEncAlg)), - signerinfo->cmsg->pwfn_arg) != SECSuccess) ? NSSCMSVS_BadSignature : NSSCMSVS_GoodSignature; - - PORT_FreeArena(poolp, PR_FALSE); /* awkward memory management :-( */ - - } else { - SECItem *sig; - - /* No authenticated attributes. The signature is based on the plain message digest. */ - sig = &(signerinfo->encDigest); - if (sig->len == 0) - goto loser; - - vs = (VFY_VerifyDigest(digest, publickey, sig, - SECOID_GetAlgorithmTag(&(signerinfo->digestEncAlg)), - signerinfo->cmsg->pwfn_arg) != SECSuccess) ? NSSCMSVS_BadSignature : NSSCMSVS_GoodSignature; - } - - if (vs == NSSCMSVS_BadSignature) { - /* - * XXX Change the generic error into our specific one, because - * in that case we get a better explanation out of the Security - * Advisor. This is really a bug in our error strings (the - * "generic" error has a lousy/wrong message associated with it - * which assumes the signature verification was done for the - * purposes of checking the issuer signature on a certificate) - * but this is at least an easy workaround and/or in the - * Security Advisor, which specifically checks for the error - * SEC_ERROR_PKCS7_BAD_SIGNATURE and gives more explanation - * in that case but does not similarly check for - * SEC_ERROR_BAD_SIGNATURE. It probably should, but then would - * probably say the wrong thing in the case that it *was* the - * certificate signature check that failed during the cert - * verification done above. Our error handling is really a mess. - */ - if (PORT_GetError() == SEC_ERROR_BAD_SIGNATURE) - PORT_SetError(SEC_ERROR_PKCS7_BAD_SIGNATURE); - } - - if (publickey != NULL) - SECKEY_DestroyPublicKey (publickey); - - signerinfo->verificationStatus = vs; - - return (vs == NSSCMSVS_GoodSignature) ? SECSuccess : SECFailure; - -loser: - if (publickey != NULL) - SECKEY_DestroyPublicKey (publickey); - - signerinfo->verificationStatus = vs; - - PORT_SetError (SEC_ERROR_PKCS7_BAD_SIGNATURE); - return SECFailure; -} - -NSSCMSVerificationStatus -NSS_CMSSignerInfo_GetVerificationStatus(NSSCMSSignerInfo *signerinfo) -{ - return signerinfo->verificationStatus; -} - -SECOidData * -NSS_CMSSignerInfo_GetDigestAlg(NSSCMSSignerInfo *signerinfo) -{ - return SECOID_FindOID (&(signerinfo->digestAlg.algorithm)); -} - -SECOidTag -NSS_CMSSignerInfo_GetDigestAlgTag(NSSCMSSignerInfo *signerinfo) -{ - SECOidData *algdata; - - algdata = SECOID_FindOID (&(signerinfo->digestAlg.algorithm)); - if (algdata != NULL) - return algdata->offset; - else - return SEC_OID_UNKNOWN; -} - -CERTCertificateList * -NSS_CMSSignerInfo_GetCertList(NSSCMSSignerInfo *signerinfo) -{ - return signerinfo->certList; -} - -int -NSS_CMSSignerInfo_GetVersion(NSSCMSSignerInfo *signerinfo) -{ - unsigned long version; - - /* always take apart the SECItem */ - if (SEC_ASN1DecodeInteger(&(signerinfo->version), &version) != SECSuccess) - return 0; - else - return (int)version; -} - -/* - * NSS_CMSSignerInfo_GetSigningTime - return the signing time, - * in UTCTime format, of a CMS signerInfo. - * - * sinfo - signerInfo data for this signer - * - * Returns a pointer to XXXX (what?) - * A return value of NULL is an error. - */ -SECStatus -NSS_CMSSignerInfo_GetSigningTime(NSSCMSSignerInfo *sinfo, PRTime *stime) -{ - NSSCMSAttribute *attr; - SECItem *value; - - if (sinfo == NULL) - return SECFailure; - - if (sinfo->signingTime != 0) { - *stime = sinfo->signingTime; /* cached copy */ - return SECSuccess; - } - - attr = NSS_CMSAttributeArray_FindAttrByOidTag(sinfo->authAttr, SEC_OID_PKCS9_SIGNING_TIME, PR_TRUE); - /* XXXX multi-valued attributes NIH */ - if (attr == NULL || (value = NSS_CMSAttribute_GetValue(attr)) == NULL) - return SECFailure; - if (DER_UTCTimeToTime(stime, value) != SECSuccess) - return SECFailure; - sinfo->signingTime = *stime; /* make cached copy */ - return SECSuccess; -} - -/* - * Return the signing cert of a CMS signerInfo. - * - * the certs in the enclosing SignedData must have been imported already - */ -CERTCertificate * -NSS_CMSSignerInfo_GetSigningCertificate(NSSCMSSignerInfo *signerinfo, CERTCertDBHandle *certdb) -{ - CERTCertificate *cert; - - if (signerinfo->cert != NULL) - return signerinfo->cert; - - /* no certdb, and cert hasn't been set yet? */ - if (certdb == NULL) - return NULL; - - /* - * This cert will also need to be freed, but since we save it - * in signerinfo for later, we do not want to destroy it when - * we leave this function -- we let the clean-up of the entire - * cinfo structure later do the destroy of this cert. - */ - switch (signerinfo->signerIdentifier.identifierType) { - case NSSCMSSignerID_IssuerSN: - cert = CERT_FindCertByIssuerAndSN(certdb, signerinfo->signerIdentifier.id.issuerAndSN); - break; - case NSSCMSSignerID_SubjectKeyID: -#if 0 /* not yet implemented */ - cert = CERT_FindCertBySubjectKeyID(certdb, signerinfo->signerIdentifier.id.subjectKeyID); -#else - cert = NULL; -#endif - break; - default: - cert = NULL; - break; - } - - /* cert can be NULL at that point */ - signerinfo->cert = cert; /* earmark it */ - - return cert; -} - -/* - * NSS_CMSSignerInfo_GetSignerCommonName - return the common name of the signer - * - * sinfo - signerInfo data for this signer - * - * Returns a pointer to allocated memory, which must be freed. - * A return value of NULL is an error. - */ -char * -NSS_CMSSignerInfo_GetSignerCommonName(NSSCMSSignerInfo *sinfo) -{ - CERTCertificate *signercert; - - /* will fail if cert is not verified */ - if ((signercert = NSS_CMSSignerInfo_GetSigningCertificate(sinfo, NULL)) == NULL) - return NULL; - - return (CERT_GetCommonName(&signercert->subject)); -} - -/* - * NSS_CMSSignerInfo_GetSignerEmailAddress - return the common name of the signer - * - * sinfo - signerInfo data for this signer - * - * Returns a pointer to allocated memory, which must be freed. - * A return value of NULL is an error. - */ -char * -NSS_CMSSignerInfo_GetSignerEmailAddress(NSSCMSSignerInfo *sinfo) -{ - CERTCertificate *signercert; - - if ((signercert = NSS_CMSSignerInfo_GetSigningCertificate(sinfo, NULL)) == NULL) - return NULL; - - if (signercert->emailAddr == NULL) - return NULL; - - return (PORT_Strdup(signercert->emailAddr)); -} - -/* - * NSS_CMSSignerInfo_AddAuthAttr - add an attribute to the - * authenticated (i.e. signed) attributes of "signerinfo". - */ -SECStatus -NSS_CMSSignerInfo_AddAuthAttr(NSSCMSSignerInfo *signerinfo, NSSCMSAttribute *attr) -{ - return NSS_CMSAttributeArray_AddAttr(signerinfo->cmsg->poolp, &(signerinfo->authAttr), attr); -} - -/* - * NSS_CMSSignerInfo_AddUnauthAttr - add an attribute to the - * unauthenticated attributes of "signerinfo". - */ -SECStatus -NSS_CMSSignerInfo_AddUnauthAttr(NSSCMSSignerInfo *signerinfo, NSSCMSAttribute *attr) -{ - return NSS_CMSAttributeArray_AddAttr(signerinfo->cmsg->poolp, &(signerinfo->unAuthAttr), attr); -} - -/* - * NSS_CMSSignerInfo_AddSigningTime - add the signing time to the - * authenticated (i.e. signed) attributes of "signerinfo". - * - * This is expected to be included in outgoing signed - * messages for email (S/MIME) but is likely useful in other situations. - * - * This should only be added once; a second call will do nothing. - * - * XXX This will probably just shove the current time into "signerinfo" - * but it will not actually get signed until the entire item is - * processed for encoding. Is this (expected to be small) delay okay? - */ -SECStatus -NSS_CMSSignerInfo_AddSigningTime(NSSCMSSignerInfo *signerinfo, PRTime t) -{ - NSSCMSAttribute *attr; - SECItem stime; - void *mark; - PLArenaPool *poolp; - - poolp = signerinfo->cmsg->poolp; - - mark = PORT_ArenaMark(poolp); - - /* create new signing time attribute */ - if (DER_TimeToUTCTime(&stime, t) != SECSuccess) - goto loser; - - if ((attr = NSS_CMSAttribute_Create(poolp, SEC_OID_PKCS9_SIGNING_TIME, &stime, PR_FALSE)) == NULL) { - SECITEM_FreeItem (&stime, PR_FALSE); - goto loser; - } - - SECITEM_FreeItem (&stime, PR_FALSE); - - if (NSS_CMSSignerInfo_AddAuthAttr(signerinfo, attr) != SECSuccess) - goto loser; - - PORT_ArenaUnmark (poolp, mark); - - return SECSuccess; - -loser: - PORT_ArenaRelease (poolp, mark); - return SECFailure; -} - -/* - * NSS_CMSSignerInfo_AddSMIMECaps - add a SMIMECapabilities attribute to the - * authenticated (i.e. signed) attributes of "signerinfo". - * - * This is expected to be included in outgoing signed - * messages for email (S/MIME). - */ -SECStatus -NSS_CMSSignerInfo_AddSMIMECaps(NSSCMSSignerInfo *signerinfo) -{ - NSSCMSAttribute *attr; - SECItem *smimecaps = NULL; - void *mark; - PLArenaPool *poolp; - - poolp = signerinfo->cmsg->poolp; - - mark = PORT_ArenaMark(poolp); - - smimecaps = SECITEM_AllocItem(poolp, NULL, 0); - if (smimecaps == NULL) - goto loser; - - /* create new signing time attribute */ - if (NSS_SMIMEUtil_CreateSMIMECapabilities(poolp, smimecaps, - PK11_FortezzaHasKEA(signerinfo->cert)) != SECSuccess) - goto loser; - - if ((attr = NSS_CMSAttribute_Create(poolp, SEC_OID_PKCS9_SMIME_CAPABILITIES, smimecaps, PR_TRUE)) == NULL) - goto loser; - - if (NSS_CMSSignerInfo_AddAuthAttr(signerinfo, attr) != SECSuccess) - goto loser; - - PORT_ArenaUnmark (poolp, mark); - return SECSuccess; - -loser: - PORT_ArenaRelease (poolp, mark); - return SECFailure; -} - -/* - * NSS_CMSSignerInfo_AddSMIMEEncKeyPrefs - add a SMIMEEncryptionKeyPreferences attribute to the - * authenticated (i.e. signed) attributes of "signerinfo". - * - * This is expected to be included in outgoing signed messages for email (S/MIME). - */ -SECStatus -NSS_CMSSignerInfo_AddSMIMEEncKeyPrefs(NSSCMSSignerInfo *signerinfo, CERTCertificate *cert, CERTCertDBHandle *certdb) -{ - NSSCMSAttribute *attr; - SECItem *smimeekp = NULL; - void *mark; - PLArenaPool *poolp; - - /* verify this cert for encryption */ - if (CERT_VerifyCert(certdb, cert, PR_TRUE, certUsageEmailRecipient, PR_Now(), signerinfo->cmsg->pwfn_arg, NULL) != SECSuccess) { - return SECFailure; - } - - poolp = signerinfo->cmsg->poolp; - mark = PORT_ArenaMark(poolp); - - smimeekp = SECITEM_AllocItem(poolp, NULL, 0); - if (smimeekp == NULL) - goto loser; - - /* create new signing time attribute */ - if (NSS_SMIMEUtil_CreateSMIMEEncKeyPrefs(poolp, smimeekp, cert) != SECSuccess) - goto loser; - - if ((attr = NSS_CMSAttribute_Create(poolp, SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, smimeekp, PR_TRUE)) == NULL) - goto loser; - - if (NSS_CMSSignerInfo_AddAuthAttr(signerinfo, attr) != SECSuccess) - goto loser; - - PORT_ArenaUnmark (poolp, mark); - return SECSuccess; - -loser: - PORT_ArenaRelease (poolp, mark); - return SECFailure; -} - -/* - * NSS_CMSSignerInfo_AddCounterSignature - countersign a signerinfo - * - * 1. digest the DER-encoded signature value of the original signerinfo - * 2. create new signerinfo with correct version, sid, digestAlg - * 3. add message-digest authAttr, but NO content-type - * 4. sign the authAttrs - * 5. DER-encode the new signerInfo - * 6. add the whole thing to original signerInfo's unAuthAttrs - * as a SEC_OID_PKCS9_COUNTER_SIGNATURE attribute - * - * XXXX give back the new signerinfo? - */ -SECStatus -NSS_CMSSignerInfo_AddCounterSignature(NSSCMSSignerInfo *signerinfo, - SECOidTag digestalg, CERTCertificate signingcert) -{ - /* XXXX TBD XXXX */ - return SECFailure; -} - -/* - * XXXX the following needs to be done in the S/MIME layer code - * after signature of a signerinfo is verified - */ -SECStatus -NSS_SMIMESignerInfo_SaveSMIMEProfile(NSSCMSSignerInfo *signerinfo) -{ - CERTCertificate *cert = NULL; - SECItem *profile = NULL; - NSSCMSAttribute *attr; - SECItem *utc_stime = NULL; - SECItem *ekp; - CERTCertDBHandle *certdb; - int save_error; - SECStatus rv; - - certdb = CERT_GetDefaultCertDB(); - - /* sanity check - see if verification status is ok (unverified does not count...) */ - if (signerinfo->verificationStatus != NSSCMSVS_GoodSignature) - return SECFailure; - - /* find preferred encryption cert */ - if (!NSS_CMSArray_IsEmpty((void **)signerinfo->authAttr) && - (attr = NSS_CMSAttributeArray_FindAttrByOidTag(signerinfo->authAttr, - SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, PR_TRUE)) != NULL) - { /* we have a SMIME_ENCRYPTION_KEY_PREFERENCE attribute! */ - ekp = NSS_CMSAttribute_GetValue(attr); - if (ekp == NULL) - return SECFailure; - - /* we assume that all certs coming with the message have been imported to the */ - /* temporary database */ - cert = NSS_SMIMEUtil_GetCertFromEncryptionKeyPreference(certdb, ekp); - if (cert == NULL) - return SECFailure; - } - - if (cert == NULL) { - /* no preferred cert found? - * find the cert the signerinfo is signed with instead */ - cert = NSS_CMSSignerInfo_GetSigningCertificate(signerinfo, certdb); - if (cert == NULL || cert->emailAddr == NULL) - return SECFailure; - } - - /* verify this cert for encryption (has been verified for signing so far) */ /* don't verify this cert for encryption. It may just be a signing cert. - * that's OK, we can still save the S/MIME profile. The encryption cert - * should have already been saved */ -#ifdef notdef - if (CERT_VerifyCert(certdb, cert, PR_TRUE, certUsageEmailRecipient, PR_Now(), signerinfo->cmsg->pwfn_arg, NULL) != SECSuccess) { - return SECFailure; - } -#endif - - /* XXX store encryption cert permanently? */ - - /* - * Remember the current error set because we do not care about - * anything set by the functions we are about to call. - */ - save_error = PORT_GetError(); - - if (!NSS_CMSArray_IsEmpty((void **)signerinfo->authAttr)) { - attr = NSS_CMSAttributeArray_FindAttrByOidTag(signerinfo->authAttr, - SEC_OID_PKCS9_SMIME_CAPABILITIES, - PR_TRUE); - profile = NSS_CMSAttribute_GetValue(attr); - attr = NSS_CMSAttributeArray_FindAttrByOidTag(signerinfo->authAttr, - SEC_OID_PKCS9_SIGNING_TIME, - PR_TRUE); - utc_stime = NSS_CMSAttribute_GetValue(attr); - } - - rv = CERT_SaveSMimeProfile (cert, profile, utc_stime); - - /* - * Restore the saved error in case the calls above set a new - * one that we do not actually care about. - */ - PORT_SetError (save_error); - - return rv; -} - -/* - * NSS_CMSSignerInfo_IncludeCerts - set cert chain inclusion mode for this signer - */ -SECStatus -NSS_CMSSignerInfo_IncludeCerts(NSSCMSSignerInfo *signerinfo, NSSCMSCertChainMode cm, SECCertUsage usage) -{ - if (signerinfo->cert == NULL) - return SECFailure; - - /* don't leak if we get called twice */ - if (signerinfo->certList != NULL) { - CERT_DestroyCertificateList(signerinfo->certList); - signerinfo->certList = NULL; - } - - switch (cm) { - case NSSCMSCM_None: - signerinfo->certList = NULL; - break; - case NSSCMSCM_CertOnly: - signerinfo->certList = CERT_CertListFromCert(signerinfo->cert); - break; - case NSSCMSCM_CertChain: - signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_FALSE); - break; - case NSSCMSCM_CertChainWithRoot: - signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_TRUE); - break; - } - - if (cm != NSSCMSCM_None && signerinfo->certList == NULL) - return SECFailure; - - return SECSuccess; -} |