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75 lines
2.0 KiB
75 lines
2.0 KiB
#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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