Initial import of old CVS repository
1 files changed, 110 insertions, 0 deletions
diff --git a/crypto/src/asn1/DerBoolean.cs b/crypto/src/asn1/DerBoolean.cs
new file mode 100644
index 000000000..41ccae8a1
--- /dev/null
+++ b/crypto/src/asn1/DerBoolean.cs
@@ -0,0 +1,110 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1
+{
+ public class DerBoolean
+ : Asn1Object
+ {
+ private readonly byte value;
+
+ public static readonly DerBoolean False = new DerBoolean(false);
+ public static readonly DerBoolean True = new DerBoolean(true);
+
+ /**
+ * return a bool from the passed in object.
+ *
+ * @exception ArgumentException if the object cannot be converted.
+ */
+ public static DerBoolean GetInstance(
+ object obj)
+ {
+ if (obj == null || obj is DerBoolean)
+ {
+ return (DerBoolean) obj;
+ }
+
+ throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
+ }
+
+ /**
+ * return a DerBoolean from the passed in bool.
+ */
+ public static DerBoolean GetInstance(
+ bool value)
+ {
+ return value ? True : False;
+ }
+
+ /**
+ * return a Boolean from a tagged object.
+ *
+ * @param obj the tagged object holding the object we want
+ * @param explicitly true if the object is meant to be explicitly
+ * tagged false otherwise.
+ * @exception ArgumentException if the tagged object cannot
+ * be converted.
+ */
+ public static DerBoolean GetInstance(
+ Asn1TaggedObject obj,
+ bool isExplicit)
+ {
+ Asn1Object o = obj.GetObject();
+
+ if (isExplicit || o is DerBoolean)
+ {
+ return GetInstance(o);
+ }
+
+ return new DerBoolean(((Asn1OctetString)o).GetOctets());
+ }
+
+ public DerBoolean(
+ byte[] val)
+ {
+ if (val.Length != 1)
+ throw new ArgumentException("byte value should have 1 byte in it", "val");
+
+ // TODO Are there any constraints on the possible byte values?
+ this.value = val[0];
+ }
+
+ private DerBoolean(
+ bool value)
+ {
+ this.value = value ? (byte)0xff : (byte)0;
+ }
+
+ public bool IsTrue
+ {
+ get { return value != 0; }
+ }
+
+ internal override void Encode(
+ DerOutputStream derOut)
+ {
+ // TODO Should we make sure the byte value is one of '0' or '0xff' here?
+ derOut.WriteEncoded(Asn1Tags.Boolean, new byte[]{ value });
+ }
+
+ protected override bool Asn1Equals(
+ Asn1Object asn1Object)
+ {
+ DerBoolean other = asn1Object as DerBoolean;
+
+ if (other == null)
+ return false;
+
+ return IsTrue == other.IsTrue;
+ }
+
+ protected override int Asn1GetHashCode()
+ {
+ return IsTrue.GetHashCode();
+ }
+
+ public override string ToString()
+ {
+ return IsTrue ? "TRUE" : "FALSE";
+ }
+ }
+}
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