public CmsEnvelopedDataParser(Stream envelopedData)
: base(envelopedData)
{
_attrNotRead = true;
this.envelopedData = new EnvelopedDataParser((Asn1SequenceParser)contentInfo.GetContent(16));
Asn1Set instance = Asn1Set.GetInstance(this.envelopedData.GetRecipientInfos().ToAsn1Object());
EncryptedContentInfoParser encryptedContentInfo = this.envelopedData.GetEncryptedContentInfo();
_encAlg = encryptedContentInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableInputStream(((Asn1OctetStringParser)encryptedContentInfo.GetEncryptedContent(4)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(_encAlg, readable);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(instance, secureReadable);
}
public CmsAuthenticatedDataParser(Stream envelopedData)
: base(envelopedData)
{
authAttrNotRead = true;
authData = new AuthenticatedDataParser((Asn1SequenceParser)contentInfo.GetContent(16));
Asn1Set instance = Asn1Set.GetInstance(authData.GetRecipientInfos().ToAsn1Object());
macAlg = authData.GetMacAlgorithm();
ContentInfoParser enapsulatedContentInfo = authData.GetEnapsulatedContentInfo();
CmsReadable readable = new CmsProcessableInputStream(((Asn1OctetStringParser)enapsulatedContentInfo.GetContent(4)).GetOctetStream());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(macAlg, readable);
_recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(instance, secureReadable);
}
public CmsEnvelopedData(ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
EnvelopedData instance = EnvelopedData.GetInstance(contentInfo.Content);
Asn1Set recipientInfos = instance.RecipientInfos;
EncryptedContentInfo encryptedContentInfo = instance.EncryptedContentInfo;
encAlg = encryptedContentInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableByteArray(encryptedContentInfo.EncryptedContent.GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(encAlg, readable);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(recipientInfos, secureReadable);
unprotectedAttributes = instance.UnprotectedAttrs;
}
static CmsEnvelopedHelper()
{
Instance = new CmsEnvelopedHelper();
KeySizes = Platform.CreateHashtable();
BaseCipherNames = Platform.CreateHashtable();
KeySizes.Add(CmsEnvelopedGenerator.DesEde3Cbc, 192);
KeySizes.Add(CmsEnvelopedGenerator.Aes128Cbc, 128);
KeySizes.Add(CmsEnvelopedGenerator.Aes192Cbc, 192);
KeySizes.Add(CmsEnvelopedGenerator.Aes256Cbc, 256);
BaseCipherNames.Add(CmsEnvelopedGenerator.DesEde3Cbc, "DESEDE");
BaseCipherNames.Add(CmsEnvelopedGenerator.Aes128Cbc, "AES");
BaseCipherNames.Add(CmsEnvelopedGenerator.Aes192Cbc, "AES");
BaseCipherNames.Add(CmsEnvelopedGenerator.Aes256Cbc, "AES");
}
public CmsAuthenticatedData(ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
AuthenticatedData instance = AuthenticatedData.GetInstance(contentInfo.Content);
Asn1Set recipientInfos = instance.RecipientInfos;
macAlg = instance.MacAlgorithm;
ContentInfo encapsulatedContentInfo = instance.EncapsulatedContentInfo;
CmsReadable readable = new CmsProcessableByteArray(Asn1OctetString.GetInstance(encapsulatedContentInfo.Content).GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(macAlg, readable);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(recipientInfos, secureReadable);
authAttrs = instance.AuthAttrs;
mac = instance.Mac.GetOctets();
unauthAttrs = instance.UnauthAttrs;
}
public CmsAuthEnvelopedData(ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
AuthEnvelopedData instance = AuthEnvelopedData.GetInstance(contentInfo.Content);
originator = instance.OriginatorInfo;
Asn1Set recipientInfos = instance.RecipientInfos;
EncryptedContentInfo authEncryptedContentInfo = instance.AuthEncryptedContentInfo;
authEncAlg = authEncryptedContentInfo.ContentEncryptionAlgorithm;
CmsSecureReadable secureReadable = new AuthEnvelopedSecureReadable(this);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(recipientInfos, secureReadable);
authAttrs = instance.AuthAttrs;
mac = instance.Mac.GetOctets();
unauthAttrs = instance.UnauthAttrs;
}