diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/paddings/X923Padding.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/paddings/X923Padding.java | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/paddings/X923Padding.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/paddings/X923Padding.java deleted file mode 100644 index e5b8992f1..000000000 --- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/paddings/X923Padding.java +++ /dev/null @@ -1,80 +0,0 @@ -package org.spongycastle.crypto.paddings; - -import java.security.SecureRandom; - -import org.spongycastle.crypto.InvalidCipherTextException; - -/** - * A padder that adds X9.23 padding to a block - if a SecureRandom is - * passed in random padding is assumed, otherwise padding with zeros is used. - */ -public class X923Padding - implements BlockCipherPadding -{ - SecureRandom random = null; - - /** - * Initialise the padder. - * - * @param random a SecureRandom if one is available. - */ - public void init(SecureRandom random) - throws IllegalArgumentException - { - this.random = random; - } - - /** - * Return the name of the algorithm the padder implements. - * - * @return the name of the algorithm the padder implements. - */ - public String getPaddingName() - { - return "X9.23"; - } - - /** - * add the pad bytes to the passed in block, returning the - * number of bytes added. - */ - public int addPadding( - byte[] in, - int inOff) - { - byte code = (byte)(in.length - inOff); - - while (inOff < in.length - 1) - { - if (random == null) - { - in[inOff] = 0; - } - else - { - in[inOff] = (byte)random.nextInt(); - } - inOff++; - } - - in[inOff] = code; - - return code; - } - - /** - * return the number of pad bytes present in the block. - */ - public int padCount(byte[] in) - throws InvalidCipherTextException - { - int count = in[in.length - 1] & 0xff; - - if (count > in.length) - { - throw new InvalidCipherTextException("pad block corrupted"); - } - - return count; - } -} |