void decode(Byte[] rawData) {
Asn1Reader asn = new Asn1Reader(rawData);
asn.MoveNext();
ContentType = new Asn1ObjectIdentifier(asn.GetTagRawData()).Value;
asn.MoveNextAndExpectTags(0xa0); // [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL, 0xa0
asn.MoveNextAndExpectTags(0x30); // SEQUENCE OF ANY
asn.MoveNextAndExpectTags((Byte)Asn1Type.INTEGER); // version
Version = (Int32)new Asn1Integer(asn.GetTagRawData()).Value;
asn.MoveNextCurrentLevelAndExpectTags(0x31);
decodeDigestAlgorithms(asn);
asn.MoveNextCurrentLevelAndExpectTags(0x30); // ContentInfo
Byte[] content = extractContent(asn);
while (asn.MoveNextCurrentLevel()) {
switch (asn.Tag) {
case 0xa0:
decodeCertificates(asn);
break;
case 0xa1:
decodeCrls(asn);
break;
case 0x31:
decodeSignerInfos(asn);
break;
default:
throw new ArgumentException("Invalid type.");
}
}
RawData = rawData;
DecodeContent(content);
}
void m_decode(Byte[] rawData)
{
Asn1Reader asn = new Asn1Reader(rawData);
if (asn.Tag != 48)
{
throw new Asn1InvalidTagException(asn.Offset);
}
asn.MoveNextAndExpectTags(0x30);
ToBeSignedData = asn.GetTagRawData();
asn.MoveNextCurrentLevelAndExpectTags(0x30);
SignatureAlgorithm = new AlgorithmIdentifier(asn.GetTagRawData());
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.BIT_STRING);
Signature = new Asn1BitString(asn);
}
void decodeCms(Asn1Reader asn)
{
asn.MoveNextAndExpectTags(48, (Byte)Asn1Type.OBJECT_IDENTIFIER);
if (asn.Tag == 48)
{
Status = new TspStatusInfo(asn.GetTagRawData());
if (Status.ResponseStatus != TspResponseStatus.Granted && Status.ResponseStatus != TspResponseStatus.GrantedWithModifications)
{
return;
}
asn.MoveNextCurrentLevelAndExpectTags(48);
}
else
{
asn.MoveToPosition(0);
}
signedCms = new DefaultSignedPkcs7(asn.GetTagRawData());
ResponseType = signedCms.ContentType;
switch (ResponseType.Value)
{
// TimeStamp Token
case "1.2.840.113549.1.9.16.1.4":
decodeTstInfo(new Asn1Reader(signedCms.Content));
break;
// PKCS 7 DATA
case "1.2.840.113549.1.7.1":
break;
}
getSigningTime();
_rawData.AddRange(asn.GetRawData());
validate();
}
void decode(Asn1Reader asn)
{
asn.MoveNextAndExpectTags(48);
AlgorithmIdentifier = new AlgorithmIdentifier(asn.GetTagRawData());
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.OCTET_STRING);
_msgHash.AddRange(new Asn1OctetString(asn).Value);
}
void getSubject(Asn1Reader asn)
{
asn.MoveNextCurrentLevelAndExpectTags(0x30);
if (asn.PayloadLength != 0)
{
SubjectName = new X500DistinguishedName(asn.GetTagRawData());
}
}
void decode(Byte[] rawData)
{
var asn = new Asn1Reader(rawData);
asn.MoveNext();
IssuerName = new X500DistinguishedName(asn.GetTagRawData());
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.INTEGER);
SerialNumber = AsnFormatter.BinaryToString(asn);
_rawData.AddRange(rawData);
}
/// <summary>
/// Decodes embedded payload of the CMC message. Current implementation supports only PKCS#10 certificate
/// request objects.
/// </summary>
/// <inheritdoc select="param"/>
/// <remarks>This member cannot be inherited or overriden.</remarks>
protected override void DecodeContent(Byte[] rawData)
{
var asn = new Asn1Reader(rawData);
asn.MoveNextAndExpectTags(0x30); // ControlSequence ::= SEQUENCE OF TaggedAttribute
asn.MoveNextCurrentLevelAndExpectTags(0x30); // ReqSequence ::= SEQUENCE OF TaggedRequest
asn.MoveNextAndExpectTags(0xa0);
asn.MoveNextAndExpectTags((Byte)Asn1Type.INTEGER);
asn.MoveNextAndExpectTags(0x30);
// theoretically, it is a sequence, but we pick only first request. Never seen an array of requests
Content = new X509CertificateRequestPkcs10(asn.GetTagRawData());
}
void initializeFromAsn(Byte[] rawData)
{
Asn1Reader asn = new Asn1Reader(rawData);
if (asn.Tag != 48)
{
throw new Asn1InvalidTagException(asn.Offset);
}
asn.MoveNext();
HashingAlgorithm = new AlgorithmIdentifier(Asn1Utils.Encode(asn.GetPayload(), 48)).AlgorithmId;
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.OCTET_STRING);
// issuerNameHash
IssuerNameId = AsnFormatter.BinaryToString(asn.GetPayload()).Trim();
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.OCTET_STRING);
// issuerKeyId
IssuerKeyId = AsnFormatter.BinaryToString(asn.GetPayload()).Trim();
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.INTEGER);
// serialnumber
serialNumber = asn.GetPayload();
IsReadOnly = true;
}
void decodeTstInfo(Asn1Reader asn)
{
asn.MoveNextAndExpectTags((Byte)Asn1Type.INTEGER);
Version = (Int32) new Asn1Integer(asn).Value;
asn.MoveNextAndExpectTags((Byte)Asn1Type.OBJECT_IDENTIFIER);
PolicyID = new Asn1ObjectIdentifier(asn).Value;
asn.MoveNextAndExpectTags(48);
RequestMessage = new TspMessageImprint(asn.GetTagRawData());
asn.MoveNextCurrentLevelAndExpectTags((Byte)Asn1Type.INTEGER);
SerialNumber = new Asn1Integer(asn).Value;
asn.MoveNextAndExpectTags((Byte)Asn1Type.GeneralizedTime);
GenerationTimestamp = new Asn1GeneralizedTime(asn).Value;
decodeOptionalFields(asn);
}
