public CmsAuthEnvelopedData(
ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
AuthEnvelopedData authEnvData = AuthEnvelopedData.GetInstance(contentInfo.Content);
this.originator = authEnvData.OriginatorInfo;
//
// read the recipients
//
Asn1Set recipientInfos = authEnvData.RecipientInfos;
//
// read the auth-encrypted content info
//
EncryptedContentInfo authEncInfo = authEnvData.AuthEncryptedContentInfo;
this.authEncAlg = authEncInfo.ContentEncryptionAlgorithm;
CmsSecureReadable secureReadable = new AuthEnvelopedSecureReadable(this);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
// FIXME These need to be passed to the AEAD cipher as AAD (Additional Authenticated Data)
this.authAttrs = authEnvData.AuthAttrs;
this.mac = authEnvData.Mac.GetOctets();
this.unauthAttrs = authEnvData.UnauthAttrs;
}
public CmsEnvelopedData(
ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
EnvelopedData envData = EnvelopedData.GetInstance(contentInfo.Content);
//
// read the recipients
//
Asn1Set recipientInfos = envData.RecipientInfos;
//
// read the encrypted content info
//
EncryptedContentInfo encInfo = envData.EncryptedContentInfo;
this.encAlg = encInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableByteArray(encInfo.EncryptedContent.GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(
this.encAlg, readable);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
this.unprotectedAttributes = envData.UnprotectedAttrs;
}
public CmsEnvelopedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this._attrNotRead = true;
this.envelopedData = new EnvelopedDataParser(
(Asn1SequenceParser)this.contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.envelopedData.Version;
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(this.envelopedData.GetRecipientInfos().ToAsn1Object());
//
// read the encrypted content info
//
EncryptedContentInfoParser encInfo = this.envelopedData.GetEncryptedContentInfo();
this._encAlg = encInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)encInfo.GetEncryptedContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(
this._encAlg, readable);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}
public CmsAuthenticatedData(
ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
AuthenticatedData authData = AuthenticatedData.GetInstance(contentInfo.Content);
//
// read the recipients
//
Asn1Set recipientInfos = authData.RecipientInfos;
this.macAlg = authData.MacAlgorithm;
//
// read the authenticated content info
//
ContentInfo encInfo = authData.EncapsulatedContentInfo;
CmsReadable readable = new CmsProcessableByteArray(
Asn1OctetString.GetInstance(encInfo.Content).GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(
this.macAlg, readable);
//
// build the RecipientInformationStore
//
this.recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
this.authAttrs = authData.AuthAttrs;
this.mac = authData.Mac.GetOctets();
this.unauthAttrs = authData.UnauthAttrs;
}
public CmsAuthenticatedDataParser(
Stream envelopedData)
: base(envelopedData)
{
this.authAttrNotRead = true;
this.authData = new AuthenticatedDataParser(
(Asn1SequenceParser)contentInfo.GetContent(Asn1Tags.Sequence));
// TODO Validate version?
//DerInteger version = this.authData.getVersion();
//
// read the recipients
//
Asn1Set recipientInfos = Asn1Set.GetInstance(authData.GetRecipientInfos().ToAsn1Object());
this.macAlg = authData.GetMacAlgorithm();
//
// read the authenticated content info
//
ContentInfoParser data = authData.GetEnapsulatedContentInfo();
CmsReadable readable = new CmsProcessableInputStream(
((Asn1OctetStringParser)data.GetContent(Asn1Tags.OctetString)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(
this.macAlg, readable);
//
// build the RecipientInformationStore
//
this._recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(
recipientInfos, secureReadable);
}