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103 lines
2.9 KiB
103 lines
2.9 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 System.IO; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1; |
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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.Bcpg |
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{ |
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/// <remarks>Base class for an EC Public Key.</remarks> |
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public abstract class ECPublicBcpgKey |
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: BcpgObject, IBcpgKey |
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{ |
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internal DerObjectIdentifier oid; |
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internal BigInteger point; |
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/// <param name="bcpgIn">The stream to read the packet from.</param> |
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protected ECPublicBcpgKey( |
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BcpgInputStream bcpgIn) |
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{ |
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this.oid = DerObjectIdentifier.GetInstance(Asn1Object.FromByteArray(ReadBytesOfEncodedLength(bcpgIn))); |
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this.point = new MPInteger(bcpgIn).Value; |
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} |
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protected ECPublicBcpgKey( |
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DerObjectIdentifier oid, |
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ECPoint point) |
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{ |
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this.point = new BigInteger(1, point.GetEncoded(false)); |
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this.oid = oid; |
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} |
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protected ECPublicBcpgKey( |
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DerObjectIdentifier oid, |
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BigInteger encodedPoint) |
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{ |
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this.point = encodedPoint; |
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this.oid = oid; |
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} |
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/// <summary>The format, as a string, always "PGP".</summary> |
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public string Format |
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{ |
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get { return "PGP"; } |
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} |
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/// <summary>Return the standard PGP encoding of the key.</summary> |
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public override byte[] GetEncoded() |
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{ |
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try |
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{ |
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return base.GetEncoded(); |
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} |
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catch (IOException) |
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{ |
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return null; |
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} |
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} |
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public override void Encode( |
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BcpgOutputStream bcpgOut) |
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{ |
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byte[] oid = this.oid.GetEncoded(); |
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bcpgOut.Write(oid, 1, oid.Length - 1); |
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MPInteger point = new MPInteger(this.point); |
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bcpgOut.WriteObject(point); |
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} |
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public virtual BigInteger EncodedPoint |
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{ |
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get { return point; } |
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} |
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public virtual DerObjectIdentifier CurveOid |
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{ |
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get { return oid; } |
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} |
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protected static byte[] ReadBytesOfEncodedLength( |
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BcpgInputStream bcpgIn) |
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{ |
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int length = bcpgIn.ReadByte(); |
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if (length < 0) |
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throw new EndOfStreamException(); |
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if (length == 0 || length == 0xFF) |
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throw new IOException("future extensions not yet implemented"); |
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if (length > 127) |
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throw new IOException("unsupported OID"); |
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byte[] buffer = new byte[length + 2]; |
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bcpgIn.ReadFully(buffer, 2, buffer.Length - 2); |
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buffer[0] = (byte)0x06; |
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buffer[1] = (byte)length; |
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return buffer; |
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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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