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111 lines
2.7 KiB
111 lines
2.7 KiB
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR) |
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#pragma warning disable |
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using System.IO; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.IO; |
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1 |
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{ |
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public abstract class DerGenerator |
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: Asn1Generator |
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{ |
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private bool _tagged = false; |
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private bool _isExplicit; |
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private int _tagNo; |
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protected DerGenerator( |
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Stream outStream) |
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: base(outStream) |
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{ |
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} |
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protected DerGenerator( |
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Stream outStream, |
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int tagNo, |
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bool isExplicit) |
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: base(outStream) |
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{ |
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_tagged = true; |
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_isExplicit = isExplicit; |
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_tagNo = tagNo; |
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} |
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private static void WriteLength( |
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Stream outStr, |
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int length) |
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{ |
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if (length > 127) |
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{ |
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int size = 1; |
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int val = length; |
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while ((val >>= 8) != 0) |
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{ |
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size++; |
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} |
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outStr.WriteByte((byte)(size | 0x80)); |
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for (int i = (size - 1) * 8; i >= 0; i -= 8) |
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{ |
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outStr.WriteByte((byte)(length >> i)); |
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} |
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} |
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else |
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{ |
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outStr.WriteByte((byte)length); |
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} |
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} |
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internal static void WriteDerEncoded( |
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Stream outStream, |
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int tag, |
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byte[] bytes) |
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{ |
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outStream.WriteByte((byte) tag); |
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WriteLength(outStream, bytes.Length); |
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outStream.Write(bytes, 0, bytes.Length); |
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} |
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internal void WriteDerEncoded( |
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int tag, |
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byte[] bytes) |
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{ |
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if (_tagged) |
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{ |
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int tagNum = _tagNo | Asn1Tags.ContextSpecific; |
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if (_isExplicit) |
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{ |
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int newTag = _tagNo | Asn1Tags.Constructed | Asn1Tags.ContextSpecific; |
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MemoryStream bOut = new MemoryStream(); |
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WriteDerEncoded(bOut, tag, bytes); |
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WriteDerEncoded(Out, newTag, bOut.ToArray()); |
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} |
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else |
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{ |
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if ((tag & Asn1Tags.Constructed) != 0) |
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{ |
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tagNum |= Asn1Tags.Constructed; |
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} |
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WriteDerEncoded(Out, tagNum, bytes); |
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} |
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} |
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else |
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{ |
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WriteDerEncoded(Out, tag, bytes); |
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} |
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} |
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internal static void WriteDerEncoded( |
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Stream outStr, |
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int tag, |
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Stream inStr) |
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{ |
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WriteDerEncoded(outStr, tag, Streams.ReadAll(inStr)); |
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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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