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76 lines
2.0 KiB
76 lines
2.0 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.X9
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{
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/**
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* Class for processing an ECFieldElement as a DER object.
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*/
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public class X9FieldElement
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: Asn1Encodable
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{
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private ECFieldElement f;
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public X9FieldElement(
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ECFieldElement f)
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{
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this.f = f;
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}
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public X9FieldElement(
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BigInteger p,
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Asn1OctetString s)
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: this(new FpFieldElement(p, new BigInteger(1, s.GetOctets())))
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{
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}
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public X9FieldElement(
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int m,
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int k1,
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int k2,
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int k3,
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Asn1OctetString s)
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: this(new F2mFieldElement(m, k1, k2, k3, new BigInteger(1, s.GetOctets())))
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{
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}
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public ECFieldElement Value
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{
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get { return f; }
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}
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/**
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* Produce an object suitable for an Asn1OutputStream.
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* <pre>
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* FieldElement ::= OCTET STRING
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* </pre>
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* <p>
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* <ol>
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* <li> if <i>q</i> is an odd prime then the field element is
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* processed as an Integer and converted to an octet string
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* according to x 9.62 4.3.1.</li>
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* <li> if <i>q</i> is 2<sup>m</sup> then the bit string
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* contained in the field element is converted into an octet
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* string with the same ordering padded at the front if necessary.
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* </li>
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* </ol>
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* </p>
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*/
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public override Asn1Object ToAsn1Object()
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{
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int byteCount = X9IntegerConverter.GetByteLength(f);
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byte[] paddedBigInteger = X9IntegerConverter.IntegerToBytes(f.ToBigInteger(), byteCount);
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return new DerOctetString(paddedBigInteger);
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}
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}
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}
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#pragma warning restore
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#endif
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