1 files changed, 15 insertions, 1 deletions
diff --git a/crypto/src/crypto/engines/GOST28147Engine.cs b/crypto/src/crypto/engines/GOST28147Engine.cs
index 71e6d9e44..acf0be27b 100644
--- a/crypto/src/crypto/engines/GOST28147Engine.cs
+++ b/crypto/src/crypto/engines/GOST28147Engine.cs
@@ -364,5 +364,19 @@ namespace Org.BouncyCastle.Crypto.Engines
return Arrays.Clone(sBox);
}
- }
+
+ public static string GetSBoxName(byte[] sBox)
+ {
+ foreach (string name in sBoxes.Keys)
+ {
+ byte[] sb = (byte[])sBoxes[name];
+ if (Arrays.AreEqual(sb, sBox))
+ {
+ return name;
+ }
+ }
+
+ throw new ArgumentException("SBOX provided did not map to a known one");
+ }
+ }
}
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