diff options
Diffstat (limited to 'pg/src/main/java/org/bouncycastle/openpgp/operator/PGPPad.java')
-rw-r--r-- | pg/src/main/java/org/bouncycastle/openpgp/operator/PGPPad.java | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/pg/src/main/java/org/bouncycastle/openpgp/operator/PGPPad.java b/pg/src/main/java/org/bouncycastle/openpgp/operator/PGPPad.java deleted file mode 100644 index c9cebe7d..00000000 --- a/pg/src/main/java/org/bouncycastle/openpgp/operator/PGPPad.java +++ /dev/null @@ -1,50 +0,0 @@ -package org.bouncycastle.openpgp.operator; - -import org.bouncycastle.openpgp.PGPException; - -/** - * Utility class that provides padding addition and removal for PGP session keys. - */ -public class PGPPad -{ - private PGPPad() - { - - } - - public static byte[] padSessionData(byte[] sessionInfo) - { - byte[] result = new byte[40]; - - System.arraycopy(sessionInfo, 0, result, 0, sessionInfo.length); - - byte padValue = (byte)(result.length - sessionInfo.length); - - for (int i = sessionInfo.length; i != result.length; i++) - { - result[i] = padValue; - } - - return result; - } - - public static byte[] unpadSessionData(byte[] encoded) - throws PGPException - { - byte padValue = encoded[encoded.length - 1]; - - for (int i = encoded.length - padValue; i != encoded.length; i++) - { - if (encoded[i] != padValue) - { - throw new PGPException("bad padding found in session data"); - } - } - - byte[] taggedKey = new byte[encoded.length - padValue]; - - System.arraycopy(encoded, 0, taggedKey, 0, taggedKey.length); - - return taggedKey; - } -} |