internal SignerInfo ToSignerInfo( DerObjectIdentifier contentType, CmsProcessable content, SecureRandom random) { AlgorithmIdentifier digAlgId = DigestAlgorithmID; string digestName = Helper.GetDigestAlgName(digestOID); string signatureName = digestName + "with" + Helper.GetEncryptionAlgName(encOID); byte[] hash; if (outer._digests.Contains(digestOID)) { hash = (byte[])outer._digests[digestOID]; } else { IDigest dig = Helper.GetDigestInstance(digestName); if (content != null) { content.Write(new DigOutputStream(dig)); } hash = DigestUtilities.DoFinal(dig); outer._digests.Add(digestOID, hash.Clone()); } IStreamCalculator calculator = sigCalc.CreateCalculator(); #if NETCF_1_0 || NETCF_2_0 || SILVERLIGHT || PORTABLE Stream sigStr = calculator.Stream; #else Stream sigStr = new BufferedStream(calculator.Stream); #endif Asn1Set signedAttr = null; if (sAttr != null) { IDictionary parameters = outer.GetBaseParameters(contentType, digAlgId, hash); // Asn1.Cms.AttributeTable signed = sAttr.GetAttributes(Collections.unmodifiableMap(parameters)); Asn1.Cms.AttributeTable signed = sAttr.GetAttributes(parameters); if (contentType == null) //counter signature { if (signed != null && signed[CmsAttributes.ContentType] != null) { IDictionary tmpSigned = signed.ToDictionary(); tmpSigned.Remove(CmsAttributes.ContentType); signed = new Asn1.Cms.AttributeTable(tmpSigned); } } // TODO Validate proposed signed attributes signedAttr = outer.GetAttributeSet(signed); // sig must be composed from the DER encoding. new DerOutputStream(sigStr).WriteObject(signedAttr); } else if (content != null) { // TODO Use raw signature of the hash value instead content.Write(sigStr); } Platform.Dispose(sigStr); byte[] sigBytes = ((IBlockResult)calculator.GetResult()).Collect(); Asn1Set unsignedAttr = null; if (unsAttr != null) { IDictionary baseParameters = outer.GetBaseParameters(contentType, digAlgId, hash); baseParameters[CmsAttributeTableParameter.Signature] = sigBytes.Clone(); // Asn1.Cms.AttributeTable unsigned = unsAttr.GetAttributes(Collections.unmodifiableMap(baseParameters)); Asn1.Cms.AttributeTable unsigned = unsAttr.GetAttributes(baseParameters); // TODO Validate proposed unsigned attributes unsignedAttr = outer.GetAttributeSet(unsigned); } // TODO[RSAPSS] Need the ability to specify non-default parameters Asn1Encodable sigX509Parameters = SignerUtilities.GetDefaultX509Parameters(signatureName); AlgorithmIdentifier encAlgId = Helper.GetEncAlgorithmIdentifier( new DerObjectIdentifier(encOID), sigX509Parameters); return(new SignerInfo(signerIdentifier, digAlgId, signedAttr, encAlgId, new DerOctetString(sigBytes), unsignedAttr)); }