1 files changed, 0 insertions, 121 deletions
diff --git a/bcpkix/src/main/java/org/bouncycastle/cert/crmf/bc/BcFixedLengthMGF1Padder.java b/bcpkix/src/main/java/org/bouncycastle/cert/crmf/bc/BcFixedLengthMGF1Padder.java
deleted file mode 100644
index 9fa53d6..0000000
--- a/bcpkix/src/main/java/org/bouncycastle/cert/crmf/bc/BcFixedLengthMGF1Padder.java
+++ /dev/null
@@ -1,121 +0,0 @@
-package org.bouncycastle.cert.crmf.bc;
-
-import java.security.SecureRandom;
-
-import org.bouncycastle.cert.crmf.EncryptedValuePadder;
-import org.bouncycastle.crypto.Digest;
-import org.bouncycastle.crypto.digests.SHA1Digest;
-import org.bouncycastle.crypto.generators.MGF1BytesGenerator;
-import org.bouncycastle.crypto.params.MGFParameters;
-
-/**
- * An encrypted value padder that uses MGF1 as the basis of the padding.
- */
-public class BcFixedLengthMGF1Padder
-    implements EncryptedValuePadder
-{
-    private int length;
-    private SecureRandom random;
-    private Digest dig = new SHA1Digest();
-
-    /**
-     * Create a padder to so that padded output will always be at least
-     * length bytes long.
-     *
-     * @param length fixed length for padded output.
-     */
-    public BcFixedLengthMGF1Padder(int length)
-    {
-        this(length, null);
-    }
-
-    /**
-     * Create a padder to so that padded output will always be at least
-     * length bytes long, using the passed in source of randomness to
-     * provide the random material for the padder.
-     *
-     * @param length fixed length for padded output.
-     * @param random a source of randomness.
-     */
-    public BcFixedLengthMGF1Padder(int length, SecureRandom random)
-    {
-        this.length = length;
-        this.random = random;
-    }
-
-    public byte[] getPaddedData(byte[] data)
-    {
-        byte[] bytes = new byte[length];
-        byte[] seed = new byte[dig.getDigestSize()];
-        byte[] mask = new byte[length - dig.getDigestSize()];
-
-        if (random == null)
-        {
-            random = new SecureRandom();
-        }
-
-        random.nextBytes(seed);
-
-        MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);
-
-        maskGen.init(new MGFParameters(seed));
-
-        maskGen.generateBytes(mask, 0, mask.length);
-
-        System.arraycopy(seed, 0, bytes, 0, seed.length);
-        System.arraycopy(data, 0, bytes, seed.length, data.length);
-
-        for (int i = seed.length + data.length + 1; i != bytes.length; i++)
-        {
-            bytes[i] = (byte)(1 + random.nextInt(255));
-        }
-
-        for (int i = 0; i != mask.length; i++)
-        {
-            bytes[i + seed.length] ^= mask[i];
-        }
-
-        return bytes;
-    }
-
-    public byte[] getUnpaddedData(byte[] paddedData)
-    {
-        byte[] seed = new byte[dig.getDigestSize()];
-        byte[] mask = new byte[length - dig.getDigestSize()];
-
-        System.arraycopy(paddedData, 0, seed, 0, seed.length);
-
-        MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);
-
-        maskGen.init(new MGFParameters(seed));
-
-        maskGen.generateBytes(mask, 0, mask.length);
-
-        for (int i = 0; i != mask.length; i++)
-        {
-            paddedData[i + seed.length] ^= mask[i];
-        }
-
-        int end = 0;
-
-        for (int i = paddedData.length - 1; i != seed.length; i--)
-        {
-            if (paddedData[i] == 0)
-            {
-                end = i;
-                break;
-            }
-        }
-
-        if (end == 0)
-        {
-            throw new IllegalStateException("bad padding in encoding");
-        }
-
-        byte[] data = new byte[end - seed.length];
-
-        System.arraycopy(paddedData, seed.length, data, 0, data.length);
-
-        return data;
-    }
-}