gecko-dev/security/nss/lib/smime/cmsasn1.c

492 строки
18 KiB
C

/* 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 ASN.1 templates
*/
#include "cmslocal.h"
#include "cert.h"
#include "key.h"
#include "secasn1.h"
#include "secitem.h"
#include "secoid.h"
#include "prtime.h"
#include "secerr.h"
extern const SEC_ASN1Template nss_cms_set_of_attribute_template[];
SEC_ASN1_MKSUB(CERT_IssuerAndSNTemplate)
SEC_ASN1_MKSUB(CERT_SetOfSignedCrlTemplate)
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
SEC_ASN1_MKSUB(SEC_BitStringTemplate)
SEC_ASN1_MKSUB(SEC_OctetStringTemplate)
SEC_ASN1_MKSUB(SEC_PointerToOctetStringTemplate)
SEC_ASN1_MKSUB(SEC_SetOfAnyTemplate)
/* -----------------------------------------------------------------------------
* MESSAGE
* (uses NSSCMSContentInfo)
*/
/* forward declaration */
static const SEC_ASN1Template *
nss_cms_choose_content_template(void *src_or_dest, PRBool encoding);
static const SEC_ASN1TemplateChooserPtr nss_cms_chooser = nss_cms_choose_content_template;
const SEC_ASN1Template NSSCMSMessageTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSMessage) },
{ SEC_ASN1_OBJECT_ID,
offsetof(NSSCMSMessage, contentInfo.contentType) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_DYNAMIC | SEC_ASN1_MAY_STREAM |
SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSCMSMessage, contentInfo.content),
&nss_cms_chooser },
{ 0 }
};
/* -----------------------------------------------------------------------------
* ENCAPSULATED & ENCRYPTED CONTENTINFO
* (both use a NSSCMSContentInfo)
*/
static const SEC_ASN1Template NSSCMSEncapsulatedContentInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSContentInfo) },
{ SEC_ASN1_OBJECT_ID,
offsetof(NSSCMSContentInfo, contentType) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_EXPLICIT | SEC_ASN1_MAY_STREAM |
SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
offsetof(NSSCMSContentInfo, rawContent),
SEC_ASN1_SUB(SEC_PointerToOctetStringTemplate) },
{ 0 }
};
static const SEC_ASN1Template NSSCMSEncryptedContentInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSContentInfo) },
{ SEC_ASN1_OBJECT_ID,
offsetof(NSSCMSContentInfo, contentType) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSContentInfo, contentEncAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_POINTER | SEC_ASN1_MAY_STREAM |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
offsetof(NSSCMSContentInfo, rawContent),
SEC_ASN1_SUB(SEC_OctetStringTemplate) },
{ 0 }
};
/* -----------------------------------------------------------------------------
* SIGNED DATA
*/
const SEC_ASN1Template NSSCMSSignerInfoTemplate[];
const SEC_ASN1Template NSSCMSSignedDataTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSSignedData) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSSignedData, version) },
{ SEC_ASN1_SET_OF | SEC_ASN1_XTRN,
offsetof(NSSCMSSignedData, digestAlgorithms),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSSignedData, contentInfo),
NSSCMSEncapsulatedContentInfoTemplate },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 0,
offsetof(NSSCMSSignedData, rawCerts),
SEC_ASN1_SUB(SEC_SetOfAnyTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 1,
offsetof(NSSCMSSignedData, crls),
SEC_ASN1_SUB(CERT_SetOfSignedCrlTemplate) },
{ SEC_ASN1_SET_OF,
offsetof(NSSCMSSignedData, signerInfos),
NSSCMSSignerInfoTemplate },
{ 0 }
};
const SEC_ASN1Template NSS_PointerToCMSSignedDataTemplate[] = {
{ SEC_ASN1_POINTER, 0, NSSCMSSignedDataTemplate }
};
/* -----------------------------------------------------------------------------
* signeridentifier
*/
static const SEC_ASN1Template NSSCMSSignerIdentifierTemplate[] = {
{ SEC_ASN1_CHOICE,
offsetof(NSSCMSSignerIdentifier, identifierType), NULL,
sizeof(NSSCMSSignerIdentifier) },
{ SEC_ASN1_POINTER | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
offsetof(NSSCMSSignerIdentifier, id.subjectKeyID),
SEC_ASN1_SUB(SEC_OctetStringTemplate),
NSSCMSRecipientID_SubjectKeyID },
{ SEC_ASN1_POINTER | SEC_ASN1_XTRN,
offsetof(NSSCMSSignerIdentifier, id.issuerAndSN),
SEC_ASN1_SUB(CERT_IssuerAndSNTemplate),
NSSCMSRecipientID_IssuerSN },
{ 0 }
};
/* -----------------------------------------------------------------------------
* signerinfo
*/
const SEC_ASN1Template NSSCMSSignerInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSSignerInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSSignerInfo, version) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSSignerInfo, signerIdentifier),
NSSCMSSignerIdentifierTemplate },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSSignerInfo, digestAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSCMSSignerInfo, authAttr),
nss_cms_set_of_attribute_template },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSSignerInfo, digestEncAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSSignerInfo, encDigest) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 1,
offsetof(NSSCMSSignerInfo, unAuthAttr),
nss_cms_set_of_attribute_template },
{ 0 }
};
/* -----------------------------------------------------------------------------
* ENVELOPED DATA
*/
static const SEC_ASN1Template NSSCMSOriginatorInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSOriginatorInfo) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 0,
offsetof(NSSCMSOriginatorInfo, rawCerts),
SEC_ASN1_SUB(SEC_SetOfAnyTemplate) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 1,
offsetof(NSSCMSOriginatorInfo, crls),
SEC_ASN1_SUB(CERT_SetOfSignedCrlTemplate) },
{ 0 }
};
const SEC_ASN1Template NSSCMSRecipientInfoTemplate[];
const SEC_ASN1Template NSSCMSEnvelopedDataTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSEnvelopedData) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSEnvelopedData, version) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_POINTER | SEC_ASN1_CONSTRUCTED |
SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSCMSEnvelopedData, originatorInfo),
NSSCMSOriginatorInfoTemplate },
{ SEC_ASN1_SET_OF,
offsetof(NSSCMSEnvelopedData, recipientInfos),
NSSCMSRecipientInfoTemplate },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSEnvelopedData, contentInfo),
NSSCMSEncryptedContentInfoTemplate },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 1,
offsetof(NSSCMSEnvelopedData, unprotectedAttr),
nss_cms_set_of_attribute_template },
{ 0 }
};
const SEC_ASN1Template NSS_PointerToCMSEnvelopedDataTemplate[] = {
{ SEC_ASN1_POINTER, 0, NSSCMSEnvelopedDataTemplate }
};
/* here come the 15 gazillion templates for all the v3 varieties of RecipientInfo */
/* -----------------------------------------------------------------------------
* key transport recipient info
*/
static const SEC_ASN1Template NSSCMSRecipientIdentifierTemplate[] = {
{ SEC_ASN1_CHOICE,
offsetof(NSSCMSRecipientIdentifier, identifierType), NULL,
sizeof(NSSCMSRecipientIdentifier) },
{ SEC_ASN1_POINTER | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
offsetof(NSSCMSRecipientIdentifier, id.subjectKeyID),
SEC_ASN1_SUB(SEC_OctetStringTemplate),
NSSCMSRecipientID_SubjectKeyID },
{ SEC_ASN1_POINTER | SEC_ASN1_XTRN,
offsetof(NSSCMSRecipientIdentifier, id.issuerAndSN),
SEC_ASN1_SUB(CERT_IssuerAndSNTemplate),
NSSCMSRecipientID_IssuerSN },
{ 0 }
};
static const SEC_ASN1Template NSSCMSKeyTransRecipientInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSKeyTransRecipientInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSKeyTransRecipientInfo, version) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSKeyTransRecipientInfo, recipientIdentifier),
NSSCMSRecipientIdentifierTemplate },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSKeyTransRecipientInfo, keyEncAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSKeyTransRecipientInfo, encKey) },
{ 0 }
};
/* -----------------------------------------------------------------------------
* key agreement recipient info
*/
static const SEC_ASN1Template NSSCMSOriginatorPublicKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSOriginatorPublicKey) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSOriginatorPublicKey, algorithmIdentifier),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSOriginatorPublicKey, publicKey),
SEC_ASN1_SUB(SEC_BitStringTemplate) },
{ 0 }
};
static const SEC_ASN1Template NSSCMSOriginatorIdentifierOrKeyTemplate[] = {
{ SEC_ASN1_CHOICE,
offsetof(NSSCMSOriginatorIdentifierOrKey, identifierType), NULL,
sizeof(NSSCMSOriginatorIdentifierOrKey) },
{ SEC_ASN1_POINTER | SEC_ASN1_XTRN,
offsetof(NSSCMSOriginatorIdentifierOrKey, id.issuerAndSN),
SEC_ASN1_SUB(CERT_IssuerAndSNTemplate),
NSSCMSOriginatorIDOrKey_IssuerSN },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC |
SEC_ASN1_XTRN | 1,
offsetof(NSSCMSOriginatorIdentifierOrKey, id.subjectKeyID),
SEC_ASN1_SUB(SEC_PointerToOctetStringTemplate),
NSSCMSOriginatorIDOrKey_SubjectKeyID },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 2,
offsetof(NSSCMSOriginatorIdentifierOrKey, id.originatorPublicKey),
NSSCMSOriginatorPublicKeyTemplate,
NSSCMSOriginatorIDOrKey_OriginatorPublicKey },
{ 0 }
};
const SEC_ASN1Template NSSCMSRecipientKeyIdentifierTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSRecipientKeyIdentifier) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSRecipientKeyIdentifier, subjectKeyIdentifier) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSRecipientKeyIdentifier, date) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSRecipientKeyIdentifier, other) },
{ 0 }
};
static const SEC_ASN1Template NSSCMSKeyAgreeRecipientIdentifierTemplate[] = {
{ SEC_ASN1_CHOICE,
offsetof(NSSCMSKeyAgreeRecipientIdentifier, identifierType), NULL,
sizeof(NSSCMSKeyAgreeRecipientIdentifier) },
{ SEC_ASN1_POINTER | SEC_ASN1_XTRN,
offsetof(NSSCMSKeyAgreeRecipientIdentifier, id.issuerAndSN),
SEC_ASN1_SUB(CERT_IssuerAndSNTemplate),
NSSCMSKeyAgreeRecipientID_IssuerSN },
{ SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSCMSKeyAgreeRecipientIdentifier, id.recipientKeyIdentifier),
NSSCMSRecipientKeyIdentifierTemplate,
NSSCMSKeyAgreeRecipientID_RKeyID },
{ 0 }
};
static const SEC_ASN1Template NSSCMSRecipientEncryptedKeyTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSRecipientEncryptedKey) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSRecipientEncryptedKey, recipientIdentifier),
NSSCMSKeyAgreeRecipientIdentifierTemplate },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSRecipientEncryptedKey, encKey),
SEC_ASN1_SUB(SEC_BitStringTemplate) },
{ 0 }
};
static const SEC_ASN1Template NSSCMSKeyAgreeRecipientInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSKeyAgreeRecipientInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSKeyAgreeRecipientInfo, version) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSCMSKeyAgreeRecipientInfo, originatorIdentifierOrKey),
NSSCMSOriginatorIdentifierOrKeyTemplate },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_EXPLICIT |
SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 1,
offsetof(NSSCMSKeyAgreeRecipientInfo, ukm),
SEC_ASN1_SUB(SEC_OctetStringTemplate) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSKeyAgreeRecipientInfo, keyEncAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_SEQUENCE_OF,
offsetof(NSSCMSKeyAgreeRecipientInfo, recipientEncryptedKeys),
NSSCMSRecipientEncryptedKeyTemplate },
{ 0 }
};
/* -----------------------------------------------------------------------------
* KEK recipient info
*/
static const SEC_ASN1Template NSSCMSKEKIdentifierTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSKEKIdentifier) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSKEKIdentifier, keyIdentifier) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSKEKIdentifier, date) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSKEKIdentifier, other) },
{ 0 }
};
static const SEC_ASN1Template NSSCMSKEKRecipientInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSCMSKEKRecipientInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSKEKRecipientInfo, version) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSKEKRecipientInfo, kekIdentifier),
NSSCMSKEKIdentifierTemplate },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSKEKRecipientInfo, keyEncAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSKEKRecipientInfo, encKey) },
{ 0 }
};
/* -----------------------------------------------------------------------------
* recipient info
*/
const SEC_ASN1Template NSSCMSRecipientInfoTemplate[] = {
{ SEC_ASN1_CHOICE,
offsetof(NSSCMSRecipientInfo, recipientInfoType), NULL,
sizeof(NSSCMSRecipientInfo) },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 1,
offsetof(NSSCMSRecipientInfo, ri.keyAgreeRecipientInfo),
NSSCMSKeyAgreeRecipientInfoTemplate,
NSSCMSRecipientInfoID_KeyAgree },
{ SEC_ASN1_EXPLICIT | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 2,
offsetof(NSSCMSRecipientInfo, ri.kekRecipientInfo),
NSSCMSKEKRecipientInfoTemplate,
NSSCMSRecipientInfoID_KEK },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSRecipientInfo, ri.keyTransRecipientInfo),
NSSCMSKeyTransRecipientInfoTemplate,
NSSCMSRecipientInfoID_KeyTrans },
{ 0 }
};
/* -----------------------------------------------------------------------------
*
*/
const SEC_ASN1Template NSSCMSDigestedDataTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSDigestedData) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSDigestedData, version) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(NSSCMSDigestedData, digestAlg),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSDigestedData, contentInfo),
NSSCMSEncapsulatedContentInfoTemplate },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSCMSDigestedData, digest) },
{ 0 }
};
const SEC_ASN1Template NSS_PointerToCMSDigestedDataTemplate[] = {
{ SEC_ASN1_POINTER, 0, NSSCMSDigestedDataTemplate }
};
const SEC_ASN1Template NSSCMSEncryptedDataTemplate[] = {
{ SEC_ASN1_SEQUENCE | SEC_ASN1_MAY_STREAM,
0, NULL, sizeof(NSSCMSEncryptedData) },
{ SEC_ASN1_INTEGER,
offsetof(NSSCMSEncryptedData, version) },
{ SEC_ASN1_INLINE,
offsetof(NSSCMSEncryptedData, contentInfo),
NSSCMSEncryptedContentInfoTemplate },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 1,
offsetof(NSSCMSEncryptedData, unprotectedAttr),
nss_cms_set_of_attribute_template },
{ 0 }
};
const SEC_ASN1Template NSS_PointerToCMSEncryptedDataTemplate[] = {
{ SEC_ASN1_POINTER, 0, NSSCMSEncryptedDataTemplate }
};
const SEC_ASN1Template NSSCMSGenericWrapperDataTemplate[] = {
{ SEC_ASN1_INLINE,
offsetof(NSSCMSGenericWrapperData, contentInfo),
NSSCMSEncapsulatedContentInfoTemplate },
};
SEC_ASN1_CHOOSER_IMPLEMENT(NSSCMSGenericWrapperDataTemplate)
const SEC_ASN1Template NSS_PointerToCMSGenericWrapperDataTemplate[] = {
{ SEC_ASN1_POINTER, 0, NSSCMSGenericWrapperDataTemplate }
};
SEC_ASN1_CHOOSER_IMPLEMENT(NSS_PointerToCMSGenericWrapperDataTemplate)
/* -----------------------------------------------------------------------------
*
*/
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;
}