/* ----------------------------------------------------------------------------- * */ static const SEC_ASN1Template * nss_cms_choose_content_template(void *src_or_dest, PRBool encoding) { const SEC_ASN1Template *theTemplate; NSSCMSContentInfo *cinfo; SECOidTag type; PORT_Assert (src_or_dest != NULL); if (src_or_dest == NULL) return NULL; cinfo = (NSSCMSContentInfo *)src_or_dest; type = NSS_CMSContentInfo_GetContentTypeTag(cinfo); switch (type) { default: theTemplate = NSS_CMSType_GetTemplate(type); break; case SEC_OID_PKCS7_DATA: theTemplate = SEC_ASN1_GET(SEC_PointerToOctetStringTemplate); break; case SEC_OID_PKCS7_SIGNED_DATA: theTemplate = NSS_PointerToCMSSignedDataTemplate; break; case SEC_OID_PKCS7_ENVELOPED_DATA: theTemplate = NSS_PointerToCMSEnvelopedDataTemplate; break; case SEC_OID_PKCS7_DIGESTED_DATA: theTemplate = NSS_PointerToCMSDigestedDataTemplate; break; case SEC_OID_PKCS7_ENCRYPTED_DATA: theTemplate = NSS_PointerToCMSEncryptedDataTemplate; break; } return theTemplate; }
SECItem * NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo) { NSSCMSContentInfo *ccinfo; SECOidTag tag; SECItem *pItem = NULL; if (cinfo == NULL) { return NULL; } tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo); if (NSS_CMSType_IsData(tag)) { pItem = cinfo->content.data; } else if (NSS_CMSType_IsWrapper(tag)) { ccinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo); if (ccinfo != NULL) { pItem = NSS_CMSContentInfo_GetContent(ccinfo); } } else { PORT_Assert(0); } return pItem; }
/* * 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_CMSContentInfo_GetContentTypeTag(&(digd->contentInfo)) != SEC_OID_PKCS7_DATA) version = NSS_CMS_DIGESTED_DATA_VERSION_ENCAP; dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version); return (dummy == NULL) ? SECFailure : SECSuccess; }
/* * NSS_CMSMessage_ContainsCertsOrCrls - see if message contains certs along the way */ PRBool NSS_CMSMessage_ContainsCertsOrCrls(NSSCMSMessage *cmsg) { NSSCMSContentInfo *cinfo; /* descend into CMS message */ for (cinfo = &(cmsg->contentInfo); cinfo != NULL; cinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo)) { if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(cinfo))) continue; /* next level */ if (NSS_CMSSignedData_ContainsCertsOrCrls(cinfo->content.signedData)) return PR_TRUE; /* callback here for generic wrappers? */ } return PR_FALSE; }
/* * NSS_CMSContentInfo_GetChildContentInfo - get content's contentInfo (if it exists) */ NSSCMSContentInfo * NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo) { NSSCMSContentInfo *ccinfo = NULL; if (cinfo == NULL) { return NULL; } SECOidTag tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo); switch (tag) { case SEC_OID_PKCS7_SIGNED_DATA: if (cinfo->content.signedData != NULL) { ccinfo = &(cinfo->content.signedData->contentInfo); } break; case SEC_OID_PKCS7_ENVELOPED_DATA: if (cinfo->content.envelopedData != NULL) { ccinfo = &(cinfo->content.envelopedData->contentInfo); } break; case SEC_OID_PKCS7_DIGESTED_DATA: if (cinfo->content.digestedData != NULL) { ccinfo = &(cinfo->content.digestedData->contentInfo); } break; case SEC_OID_PKCS7_ENCRYPTED_DATA: if (cinfo->content.encryptedData != NULL) { ccinfo = &(cinfo->content.encryptedData->contentInfo); } break; case SEC_OID_PKCS7_DATA: default: if (NSS_CMSType_IsWrapper(tag)) { if (cinfo->content.genericData != NULL) { ccinfo = &(cinfo->content.genericData->contentInfo); } } break; } if (ccinfo && !ccinfo->privateInfo) { NSS_CMSContentInfo_Private_Init(ccinfo); } return ccinfo; }
/* * NSS_CMSMessage_IsEncrypted - see if message contains a encrypted submessage */ PRBool NSS_CMSMessage_IsEncrypted(NSSCMSMessage *cmsg) { NSSCMSContentInfo *cinfo; /* walk down the chain of contentinfos */ for (cinfo = &(cmsg->contentInfo); cinfo != NULL; cinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo)) { switch (NSS_CMSContentInfo_GetContentTypeTag(cinfo)) { case SEC_OID_PKCS7_ENVELOPED_DATA: case SEC_OID_PKCS7_ENCRYPTED_DATA: return PR_TRUE; default: /* callback here for generic wrappers? */ break; } } return PR_FALSE; }
/* * NSS_CMSMessage_IsSigned - see if message contains a signed submessage * * If the CMS message has a SignedData with a signature (not just a SignedData) * return true; false otherwise. This can/should be called before calling * VerifySignature, which will always indicate failure if no signature is * present, but that does not mean there even was a signature! * Note that the content itself can be empty (detached content was sent * another way); it is the presence of the signature that matters. */ PRBool NSS_CMSMessage_IsSigned(NSSCMSMessage *cmsg) { NSSCMSContentInfo *cinfo; /* walk down the chain of contentinfos */ for (cinfo = &(cmsg->contentInfo); cinfo != NULL; cinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo)) { switch (NSS_CMSContentInfo_GetContentTypeTag(cinfo)) { case SEC_OID_PKCS7_SIGNED_DATA: if (!NSS_CMSArray_IsEmpty((void **)cinfo->content.signedData->signerInfos)) return PR_TRUE; break; default: /* callback here for generic wrappers? */ break; } } return PR_FALSE; }
/* * NSS_CMSContentInfo_Destroy - destroy a CMS contentInfo and all of its sub-pieces. */ void NSS_CMSContentInfo_Destroy(NSSCMSContentInfo *cinfo) { SECOidTag kind; if (cinfo == NULL) { return; } kind = NSS_CMSContentInfo_GetContentTypeTag(cinfo); switch (kind) { case SEC_OID_PKCS7_ENVELOPED_DATA: NSS_CMSEnvelopedData_Destroy(cinfo->content.envelopedData); break; case SEC_OID_PKCS7_SIGNED_DATA: NSS_CMSSignedData_Destroy(cinfo->content.signedData); break; case SEC_OID_PKCS7_ENCRYPTED_DATA: NSS_CMSEncryptedData_Destroy(cinfo->content.encryptedData); break; case SEC_OID_PKCS7_DIGESTED_DATA: NSS_CMSDigestedData_Destroy(cinfo->content.digestedData); break; default: NSS_CMSGenericWrapperData_Destroy(kind, cinfo->content.genericData); /* XXX Anything else that needs to be "manually" freed/destroyed? */ break; } if (cinfo->privateInfo) { nss_cmsContentInfo_private_destroy(cinfo->privateInfo); cinfo->privateInfo = NULL; } if (cinfo->bulkkey) { PK11_FreeSymKey(cinfo->bulkkey); } }
static int verify1(struct message *m, int n) { SECItem **digests; NSSCMSMessage *msg; PLArenaPool *poolp; SECAlgorithmID **algids; CERTCertDBHandle *handle; int nlevels, i; int status = 0; int foundsender = 0; char *sender; if ((m = getsig(m, n, &msg)) == NULL) return 1; sender = getsender(m); handle = CERT_GetDefaultCertDB(); nlevels = NSS_CMSMessage_ContentLevelCount(msg); for (i = 0; i < nlevels; i++) { NSSCMSContentInfo *content; SECOidTag tag; content = NSS_CMSMessage_ContentLevel(msg, i); tag = NSS_CMSContentInfo_GetContentTypeTag(content); if (tag == SEC_OID_PKCS7_SIGNED_DATA) { NSSCMSSignedData *data; int nsigners, j; if ((data = NSS_CMSContentInfo_GetContent(content)) == NULL) { fprintf(stderr, "Signed data missing for " "message %d.\n", n); status = -1; break; } if (!NSS_CMSSignedData_HasDigests(data)) { algids = NSS_CMSSignedData_GetDigestAlgs(data); if (getdig(m, n, &digests, &poolp, algids) != OKAY) { status = -1; break; } if (NSS_CMSSignedData_SetDigests(data, algids, digests) != SECSuccess) { fprintf(stderr, "Cannot set digests " "for message %d.\n", n); status = -1; break; } PORT_FreeArena(poolp, PR_FALSE); } if (NSS_CMSSignedData_ImportCerts(data, handle, certUsageEmailSigner, PR_FALSE) != SECSuccess) { fprintf(stderr, "Cannot temporarily import " "certificates for " "message %d.\n", n); status = -1; break; } nsigners = NSS_CMSSignedData_SignerInfoCount(data); if (nsigners == 0) { fprintf(stderr, "Message %d has no signers.\n", n); status = -1; break; } if (!NSS_CMSSignedData_HasDigests(data)) { fprintf(stderr, "Message %d has no digests.\n", n); status = -1; break; } for (j = 0; j < nsigners; j++) { const char *svs; NSSCMSSignerInfo *info; NSSCMSVerificationStatus vs; SECStatus bad; CERTCertificate *cert; const char *addr; int passed = 0; info = NSS_CMSSignedData_GetSignerInfo(data, j); cert = NSS_CMSSignerInfo_GetSigningCertificate (info, handle); bad = NSS_CMSSignedData_VerifySignerInfo(data, j, handle, certUsageEmailSigner); vs = NSS_CMSSignerInfo_GetVerificationStatus (info); svs = NSS_CMSUtil_VerificationStatusToString (vs); addr = CERT_GetCertEmailAddress(&cert->subject); if (sender != NULL && addr != NULL && asccasecmp(sender, addr) == 0) foundsender++; else { addr = CERT_GetFirstEmailAddress(cert); while (sender && addr) { if (!asccasecmp(sender, addr)) { foundsender++; break; } addr = CERT_GetNextEmailAddress (cert, addr); } } if (CERT_VerifyCertNow(handle, cert, PR_TRUE, certUsageEmailSigner, NULL) != SECSuccess) fprintf(stderr, "Bad certificate for " "signer <%s> of " "message %d: %s.\n", addr ? addr : "?", n, bad_cert_str()); else passed++; if (bad) fprintf(stderr, "Bad status for " "signer <%s> of " "message %d: %s.\n", addr ? addr : "?", n, svs); else passed++; if (passed < 2) status = -1; else if (status == 0) status = 1; } } } if (foundsender == 0) { if (sender) { fprintf(stderr, "Signers of message " "%d do not include the sender <%s>\n", n, sender); status = -1; } else fprintf(stderr, "Warning: Message %d has no From: " "header field.\n", n); } else if (status == 1) printf("Message %d was verified successfully.\n", n); if (status == 0) fprintf(stderr, "No verification information found in " "message %d.\n", n); NSS_CMSMessage_Destroy(msg); return status != 1; }
struct message * smime_decrypt(struct message *m, const char *to, const char *cc, int signcall) { NSSCMSDecoderContext *ctx; NSSCMSMessage *msg; FILE *op, *hp, *bp; char *buf = NULL; size_t bufsize = 0, buflen, count; char *cp; struct str in, out; FILE *yp; long size; int i, nlevels; int binary = 0; if ((yp = setinput(&mb, m, NEED_BODY)) == NULL) return NULL; if (nss_init() != OKAY) return NULL; if ((op = Ftemp(&cp, "Rp", "w+", 0600, 1)) == NULL) { perror("tempfile"); return NULL; } rm(cp); Ftfree(&cp); if ((ctx = NSS_CMSDecoder_Start(NULL, decoder_cb, op, password_cb, "Pass phrase:", NULL, NULL)) == NULL) { fprintf(stderr, "Cannot start decoder.\n"); return NULL; } size = m->m_size; if ((smime_split(yp, &hp, &bp, size, 1)) == STOP) return NULL; count = fsize(bp); while (fgetline(&buf, &bufsize, &count, &buflen, bp, 0) != NULL) { if (buf[0] == '\n') break; if ((cp = thisfield(buf, "content-transfer-encoding")) != NULL) if (ascncasecmp(cp, "binary", 7) == 0) binary = 1; } while (fgetline(&buf, &bufsize, &count, &buflen, bp, 0) != NULL) { if (binary) NSS_CMSDecoder_Update(ctx, buf, buflen); else { in.s = buf; in.l = buflen; mime_fromb64_b(&in, &out, 0, bp); NSS_CMSDecoder_Update(ctx, out.s, out.l); free(out.s); } } free(buf); if ((msg = NSS_CMSDecoder_Finish(ctx)) == NULL) { fprintf(stderr, "Failed to decode message.\n"); Fclose(hp); Fclose(bp); return NULL; } nlevels = NSS_CMSMessage_ContentLevelCount(msg); for (i = 0; i < nlevels; i++) { NSSCMSContentInfo *content; SECOidTag tag; content = NSS_CMSMessage_ContentLevel(msg, i); tag = NSS_CMSContentInfo_GetContentTypeTag(content); if (tag == SEC_OID_PKCS7_DATA) { const char *fld = "X-Encryption-Cipher"; SECOidTag alg; int keysize; alg = NSS_CMSContentInfo_GetContentEncAlgTag(content); keysize = NSS_CMSContentInfo_GetBulkKeySize(content); fseek(hp, 0L, SEEK_END); switch (alg) { case 0: if (signcall) { NSS_CMSMessage_Destroy(msg); Fclose(hp); Fclose(bp); setinput(&mb, m, NEED_BODY); return (struct message *)-1; } fprintf(hp, "%s: none\n", fld); break; case SEC_OID_RC2_CBC: fprintf(hp, "%s: RC2, %d bits\n", fld, keysize); break; case SEC_OID_DES_CBC: fprintf(hp, "%s: DES, 56 bits\n", fld); break; case SEC_OID_DES_EDE3_CBC: fprintf(hp, "%s: 3DES, 112/168 bits\n", fld); break; case SEC_OID_FORTEZZA_SKIPJACK: fprintf(hp, "%s: Fortezza\n", fld); break; default: fprintf(hp, "%s: unknown type %lu\n", fld, (unsigned long)alg); } fflush(hp); rewind(hp); } } NSS_CMSMessage_Destroy(msg); fflush(op); rewind(op); Fclose(bp); return smime_decrypt_assemble(m, hp, op); }
enum okay smime_certsave(struct message *m, int n, FILE *op) { NSSCMSMessage *msg; CERTCertDBHandle *handle; int nlevels, i, cnt = 0; enum okay ok = OKAY; if (nss_init() == STOP) return STOP; if ((m = getsig(m, n, &msg)) == NULL) return 1; handle = CERT_GetDefaultCertDB(); nlevels = NSS_CMSMessage_ContentLevelCount(msg); for (i = 0; i < nlevels; i++) { NSSCMSContentInfo *content; SECOidTag tag; content = NSS_CMSMessage_ContentLevel(msg, i); tag = NSS_CMSContentInfo_GetContentTypeTag(content); if (tag == SEC_OID_PKCS7_SIGNED_DATA) { NSSCMSSignedData *data; int nsigners, j; if ((data = NSS_CMSContentInfo_GetContent(content)) == NULL) { fprintf(stderr, "Signed data missing for " "message %d.\n", n); ok = STOP; break; } if (NSS_CMSSignedData_ImportCerts(data, handle, certUsageEmailSigner, PR_FALSE) != SECSuccess) { fprintf(stderr, "Cannot temporarily import " "certificates for " "message %d.\n", n); ok = STOP; break; } nsigners = NSS_CMSSignedData_SignerInfoCount(data); if (nsigners == 0) { fprintf(stderr, "Message %d has no signers.\n", n); ok = STOP; break; } for (j = 0; j < nsigners; j++) { NSSCMSSignerInfo *info; CERTCertificateList *list; CERTCertificate *cert; int k; info = NSS_CMSSignedData_GetSignerInfo(data, j); list = NSS_CMSSignerInfo_GetCertList(info); if (list) { for (k = 0; k < list->len; k++) { cert = (CERTCertificate *) &list->certs[k]; dumpcert(cert, op); cnt++; } } cert = NSS_CMSSignerInfo_GetSigningCertificate (info, handle); if (cert) { dumpcert(cert, op); cnt++; } } } } NSS_CMSMessage_Destroy(msg); if (cnt == 0) { fprintf(stderr, "No certificates found in message %d.\n", n); ok = STOP; } return ok; }
static CamelCipherValidity * sm_verify_cmsg(CamelCipherContext *context, NSSCMSMessage *cmsg, CamelStream *extstream, CamelException *ex) { struct _CamelSMIMEContextPrivate *p = ((CamelSMIMEContext *)context)->priv; NSSCMSSignedData *sigd = NULL; NSSCMSEnvelopedData *envd; NSSCMSEncryptedData *encd; SECAlgorithmID **digestalgs; NSSCMSDigestContext *digcx; int count, i, nsigners, j; SECItem **digests; PLArenaPool *poolp = NULL; CamelStreamMem *mem; NSSCMSVerificationStatus status; CamelCipherValidity *valid; GString *description; description = g_string_new(""); valid = camel_cipher_validity_new(); camel_cipher_validity_set_valid(valid, TRUE); status = NSSCMSVS_Unverified; /* NB: this probably needs to go into a decoding routine that can be used for processing enveloped data too */ count = NSS_CMSMessage_ContentLevelCount(cmsg); for (i = 0; i < count; i++) { NSSCMSContentInfo *cinfo = NSS_CMSMessage_ContentLevel(cmsg, i); SECOidTag typetag = NSS_CMSContentInfo_GetContentTypeTag(cinfo); switch (typetag) { case SEC_OID_PKCS7_SIGNED_DATA: sigd = (NSSCMSSignedData *)NSS_CMSContentInfo_GetContent(cinfo); if (sigd == NULL) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("No signed data in signature")); goto fail; } /* need to build digests of the content */ if (!NSS_CMSSignedData_HasDigests(sigd)) { if (extstream == NULL) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Digests missing from enveloped data")); goto fail; } if ((poolp = PORT_NewArena(1024)) == NULL) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, g_strerror (ENOMEM)); goto fail; } digestalgs = NSS_CMSSignedData_GetDigestAlgs(sigd); digcx = NSS_CMSDigestContext_StartMultiple(digestalgs); if (digcx == NULL) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot calculate digests")); goto fail; } mem = (CamelStreamMem *)camel_stream_mem_new(); camel_stream_write_to_stream(extstream, (CamelStream *)mem); NSS_CMSDigestContext_Update(digcx, mem->buffer->data, mem->buffer->len); camel_object_unref(mem); if (NSS_CMSDigestContext_FinishMultiple(digcx, poolp, &digests) != SECSuccess) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot calculate digests")); goto fail; } if (NSS_CMSSignedData_SetDigests(sigd, digestalgs, digests) != SECSuccess) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot set message digests")); goto fail; } PORT_FreeArena(poolp, PR_FALSE); poolp = NULL; } /* import all certificates present */ if (NSS_CMSSignedData_ImportCerts(sigd, p->certdb, certUsageEmailSigner, PR_TRUE) != SECSuccess) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Certificate import failed")); goto fail; } if (NSS_CMSSignedData_ImportCerts(sigd, p->certdb, certUsageEmailRecipient, PR_TRUE) != SECSuccess) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Certificate import failed")); goto fail; } /* check for certs-only message */ nsigners = NSS_CMSSignedData_SignerInfoCount(sigd); if (nsigners == 0) { /* already imported certs above, not sure what usage we should use here or if this isn't handled above */ if (NSS_CMSSignedData_VerifyCertsOnly(sigd, p->certdb, certUsageEmailSigner) != SECSuccess) { g_string_printf(description, _("Certificate is the only message, cannot verify certificates")); } else { status = NSSCMSVS_GoodSignature; g_string_printf(description, _("Certificate is the only message, certificates imported and verified")); } } else { if (!NSS_CMSSignedData_HasDigests(sigd)) { camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM, _("Cannot find signature digests")); goto fail; } for (j = 0; j < nsigners; j++) { NSSCMSSignerInfo *si; char *cn, *em; si = NSS_CMSSignedData_GetSignerInfo(sigd, j); NSS_CMSSignedData_VerifySignerInfo(sigd, j, p->certdb, certUsageEmailSigner); status = NSS_CMSSignerInfo_GetVerificationStatus(si); cn = NSS_CMSSignerInfo_GetSignerCommonName(si); em = NSS_CMSSignerInfo_GetSignerEmailAddress(si); g_string_append_printf(description, _("Signer: %s <%s>: %s\n"), cn?cn:"<unknown>", em?em:"<unknown>", sm_status_description(status)); camel_cipher_validity_add_certinfo(valid, CAMEL_CIPHER_VALIDITY_SIGN, cn, em); if (cn) PORT_Free(cn); if (em) PORT_Free(em); if (status != NSSCMSVS_GoodSignature) camel_cipher_validity_set_valid(valid, FALSE); } } break; case SEC_OID_PKCS7_ENVELOPED_DATA: envd = (NSSCMSEnvelopedData *)NSS_CMSContentInfo_GetContent(cinfo); break; case SEC_OID_PKCS7_ENCRYPTED_DATA: encd = (NSSCMSEncryptedData *)NSS_CMSContentInfo_GetContent(cinfo); break; case SEC_OID_PKCS7_DATA: break; default: break; } } camel_cipher_validity_set_valid(valid, status == NSSCMSVS_GoodSignature); camel_cipher_validity_set_description(valid, description->str); g_string_free(description, TRUE); return valid; fail: camel_cipher_validity_free(valid); g_string_free(description, TRUE); return NULL; }
/* * NSS_CMSSignedData_Encode_BeforeStart - do all the necessary things to a SignedData * before start of encoding. * * In detail: * - find out about the right value to put into sigd->version * - come up with a list of digestAlgorithms (which should be the union of the algorithms * in the signerinfos). * If we happen to have a pre-set list of algorithms (and digest values!), we * check if we have all the signerinfos' algorithms. If not, this is an error. */ SECStatus NSS_CMSSignedData_Encode_BeforeStart(NSSCMSSignedData *sigd) { NSSCMSSignerInfo *signerinfo; SECOidTag digestalgtag; SECItem *dummy; int version; SECStatus rv; PRBool haveDigests = PR_FALSE; int n, i; PLArenaPool *poolp; if (!sigd) { PORT_SetError(SEC_ERROR_INVALID_ARGS); return SECFailure; } poolp = sigd->cmsg->poolp; /* we assume that we have precomputed digests if there is a list of algorithms, and */ /* a chunk of data for each of those algorithms */ if (sigd->digestAlgorithms != NULL && sigd->digests != NULL) { for (i = 0; sigd->digestAlgorithms[i] != NULL; i++) { if (sigd->digests[i] == NULL) break; } if (sigd->digestAlgorithms[i] == NULL) /* reached the end of the array? */ haveDigests = PR_TRUE; /* yes: we must have all the digests */ } version = NSS_CMS_SIGNED_DATA_VERSION_BASIC; /* RFC2630 5.1 "version is the syntax version number..." */ if (NSS_CMSContentInfo_GetContentTypeTag(&(sigd->contentInfo)) != SEC_OID_PKCS7_DATA) version = NSS_CMS_SIGNED_DATA_VERSION_EXT; /* prepare all the SignerInfos (there may be none) */ for (i = 0; i < NSS_CMSSignedData_SignerInfoCount(sigd); i++) { signerinfo = NSS_CMSSignedData_GetSignerInfo(sigd, i); /* RFC2630 5.1 "version is the syntax version number..." */ if (NSS_CMSSignerInfo_GetVersion(signerinfo) != NSS_CMS_SIGNER_INFO_VERSION_ISSUERSN) version = NSS_CMS_SIGNED_DATA_VERSION_EXT; /* collect digestAlgorithms from SignerInfos */ /* (we need to know which algorithms we have when the content comes in) */ /* do not overwrite any existing digestAlgorithms (and digest) */ digestalgtag = NSS_CMSSignerInfo_GetDigestAlgTag(signerinfo); n = NSS_CMSAlgArray_GetIndexByAlgTag(sigd->digestAlgorithms, digestalgtag); if (n < 0 && haveDigests) { /* oops, there is a digestalg we do not have a digest for */ /* but we were supposed to have all the digests already... */ goto loser; } else if (n < 0) { /* add the digestAlgorithm & a NULL digest */ rv = NSS_CMSSignedData_AddDigest(poolp, sigd, digestalgtag, NULL); if (rv != SECSuccess) goto loser; } else { /* found it, nothing to do */ } } dummy = SEC_ASN1EncodeInteger(poolp, &(sigd->version), (long)version); if (dummy == NULL) return SECFailure; /* this is a SET OF, so we need to sort them guys */ rv = NSS_CMSArray_SortByDER((void **)sigd->digestAlgorithms, SEC_ASN1_GET(SECOID_AlgorithmIDTemplate), (void **)sigd->digests); if (rv != SECSuccess) return SECFailure; return SECSuccess; loser: return SECFailure; }