1 files changed, 56 insertions, 0 deletions
diff --git a/crypto/src/asn1/PrimitiveDerEncoding.cs b/crypto/src/asn1/PrimitiveDerEncoding.cs
new file mode 100644
index 000000000..ef5f67b26
--- /dev/null
+++ b/crypto/src/asn1/PrimitiveDerEncoding.cs
@@ -0,0 +1,56 @@
+using System;
+using System.Diagnostics;
+
+namespace Org.BouncyCastle.Asn1
+{
+ internal class PrimitiveDerEncoding
+ : DerEncoding
+ {
+ internal readonly byte[] m_contentsOctets;
+
+ internal PrimitiveDerEncoding(int tagClass, int tagNo, byte[] contentsOctets)
+ : base (tagClass, tagNo)
+ {
+ Debug.Assert(contentsOctets != null);
+ m_contentsOctets = contentsOctets;
+ }
+
+ protected internal override int CompareLengthAndContents(DerEncoding other)
+ {
+ if (other is PrimitiveDerEncodingSuffixed suffixed)
+ return -suffixed.CompareLengthAndContents(this);
+
+ if (!(other is PrimitiveDerEncoding that))
+ throw new InvalidOperationException();
+
+ int length = this.m_contentsOctets.Length;
+ if (length != that.m_contentsOctets.Length)
+ return length - that.m_contentsOctets.Length;
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
+ return this.m_contentsOctets.AsSpan(0, length).SequenceCompareTo(
+ that.m_contentsOctets.AsSpan(0, length));
+#else
+ for (int i = 0; i < length; i++)
+ {
+ byte ai = this.m_contentsOctets[i], bi = that.m_contentsOctets[i];
+ if (ai != bi)
+ return ai - bi;
+ }
+ return 0;
+#endif
+ }
+
+ public override void Encode(Asn1OutputStream asn1Out)
+ {
+ asn1Out.WriteIdentifier(m_tagClass, m_tagNo);
+ asn1Out.WriteDL(m_contentsOctets.Length);
+ asn1Out.Write(m_contentsOctets, 0, m_contentsOctets.Length);
+ }
+
+ public override int GetLength()
+ {
+ return Asn1OutputStream.GetLengthOfEncodingDL(m_tagNo, m_contentsOctets.Length);
+ }
+ }
+}
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