public GetDigestAlgorithms ( ) : Asn1SetParser | ||
Результат | Asn1SetParser |
/** * base constructor * * @param signedContent the content that was signed. * @param sigData the signature object. */ public CmsSignedDataParser( CmsTypedStream signedContent, Stream sigData) : base(sigData) { try { this._signedContent = signedContent; this._signedData = SignedDataParser.GetInstance(this.contentInfo.GetContent(Asn1Tags.Sequence)); this._digests = Platform.CreateHashtable(); this._digestOids = new HashSet(); Asn1SetParser digAlgs = _signedData.GetDigestAlgorithms(); IAsn1Convertible o; while ((o = digAlgs.ReadObject()) != null) { AlgorithmIdentifier id = AlgorithmIdentifier.GetInstance(o.ToAsn1Object()); try { string digestOid = id.ObjectID.Id; string digestName = Helper.GetDigestAlgName(digestOid); if (!this._digests.Contains(digestName)) { this._digests[digestName] = Helper.GetDigestInstance(digestName); this._digestOids.Add(digestOid); } } catch (SecurityUtilityException) { // TODO Should do something other than ignore it } } // // If the message is simply a certificate chain message GetContent() may return null. // ContentInfoParser cont = _signedData.GetEncapContentInfo(); Asn1OctetStringParser octs = (Asn1OctetStringParser) cont.GetContent(Asn1Tags.OctetString); if (octs != null) { CmsTypedStream ctStr = new CmsTypedStream( cont.ContentType.Id, octs.GetOctetStream()); if (_signedContent == null) { this._signedContent = ctStr; } else { // // content passed in, need to read past empty encapsulated content info object if present // ctStr.Drain(); } } _signedContentType = _signedContent == null ? cont.ContentType : new DerObjectIdentifier(_signedContent.ContentType); } catch (IOException e) { throw new CmsException("io exception: " + e.Message, e); } if (_digests.Count < 1) { throw new CmsException("no digests could be created for message."); } }
/** * base constructor * * @param signedContent the content that was signed. * @param sigData the signature object. */ public CmsSignedDataParser( CmsTypedStream signedContent, Stream sigData) : base(sigData) { try { this._signedContent = signedContent; this._signedData = SignedDataParser.GetInstance(this.contentInfo.GetContent(Asn1Tags.Sequence)); this._digests = new Hashtable(); Asn1SetParser digAlgs = _signedData.GetDigestAlgorithms(); IAsn1Convertible o; while ((o = digAlgs.ReadObject()) != null) { AlgorithmIdentifier id = AlgorithmIdentifier.GetInstance(o.ToAsn1Object()); try { string digestName = Helper.GetDigestAlgName(id.ObjectID.Id); IDigest dig = DigestUtilities.GetDigest(digestName); this._digests[digestName] = dig; } catch (SecurityUtilityException) { // ignore } } if (_signedContent == null) { // // If the message is simply a certificate chain message GetContent() may return null. // Asn1OctetStringParser octs = (Asn1OctetStringParser) _signedData.GetEncapContentInfo().GetContent(Asn1Tags.OctetString); if (octs != null) { this._signedContent = new CmsTypedStream(octs.GetOctetStream()); } } else { // // content passed in, need to read past empty encapsulated content info object if present // Asn1OctetStringParser octs = (Asn1OctetStringParser) _signedData.GetEncapContentInfo().GetContent(Asn1Tags.OctetString); if (octs != null) { Stream inStream = octs.GetOctetStream(); while (inStream.ReadByte() >= 0) { // ignore } } } } catch (IOException e) { throw new CmsException("io exception: " + e.Message, e); } if (_digests.Count < 1) { throw new CmsException("no digests could be created for message."); } }