54 lines
1.3 KiB
C#
54 lines
1.3 KiB
C#
using System;
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using Org.BouncyCastle.Asn1.X509;
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using Org.BouncyCastle.Utilities;
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namespace Org.BouncyCastle.Asn1.Tsp;
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public class MessageImprint : Asn1Encodable
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{
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private readonly AlgorithmIdentifier hashAlgorithm;
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private readonly byte[] hashedMessage;
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public AlgorithmIdentifier HashAlgorithm => hashAlgorithm;
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public static MessageImprint GetInstance(object o)
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{
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if (o == null || o is MessageImprint)
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{
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return (MessageImprint)o;
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}
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if (o is Asn1Sequence)
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{
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return new MessageImprint((Asn1Sequence)o);
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}
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throw new ArgumentException("Unknown object in 'MessageImprint' factory: " + Platform.GetTypeName(o));
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}
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private MessageImprint(Asn1Sequence seq)
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{
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if (seq.Count != 2)
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{
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throw new ArgumentException("Wrong number of elements in sequence", "seq");
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}
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hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[0]);
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hashedMessage = Asn1OctetString.GetInstance(seq[1]).GetOctets();
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}
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public MessageImprint(AlgorithmIdentifier hashAlgorithm, byte[] hashedMessage)
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{
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this.hashAlgorithm = hashAlgorithm;
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this.hashedMessage = hashedMessage;
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}
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public byte[] GetHashedMessage()
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{
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return hashedMessage;
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}
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public override Asn1Object ToAsn1Object()
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{
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return new DerSequence(hashAlgorithm, new DerOctetString(hashedMessage));
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}
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}
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