private void ParseNode(Asn1Node root)
{
if ((root.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SEQUENCE || root.ChildNodeCount != 3)
{
throw new InvalidX509Data();
}
// TBS cert
TbsCertificate = root.GetChildNode(0);
if (TbsCertificate.ChildNodeCount < 7)
{
throw new InvalidX509Data();
}
rawTBSCertificate = new byte[TbsCertificate.DataLength + 4];
Array.Copy(root.Data, 0, rawTBSCertificate, 0, rawTBSCertificate.Length);
// get the serial number
Asn1Node sn = TbsCertificate.GetChildNode(1);
if ((sn.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.INTEGER)
{
throw new InvalidX509Data();
}
SerialNumber = Asn1Util.ToHexString(sn.Data);
// get the issuer
Issuer = new DistinguishedName(TbsCertificate.GetChildNode(3));
// get the subject
Subject = new DistinguishedName(TbsCertificate.GetChildNode(5));
// get the dates
Asn1Node validTimes = TbsCertificate.GetChildNode(4);
if ((validTimes.Tag & Asn1Tag.TAG_MASK) != Asn1Tag.SEQUENCE || validTimes.ChildNodeCount != 2)
{
throw new InvalidX509Data();
}
ValidAfter = ParseTime(validTimes.GetChildNode(0));
ValidBefore = ParseTime(validTimes.GetChildNode(1));
// is this self signed?
SelfSigned = Subject.Equals(Issuer);
// get the pub key
PubKey = new RSAKey(TbsCertificate.GetChildNode(6));
// set the tbs cert & signature data for signature verification
Signature = root.GetChildNode(2);
}
public GooglePlayValidator(byte[] rsaKey)
{
key = new RSAKey(rsaKey);
}
