Mercurial > projects > dcrypt
view dcrypt/crypto/padding/RFC1321.d @ 27:8b5eaf3c2979
Fixed error in hash message padding reported by Glenn Haecker.
author | Thomas Dixon <reikon@reikon.us> |
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date | Sat, 09 May 2009 23:29:20 -0400 |
parents | cd376996cdb3 |
children | ad687db713a4 |
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/** * This file is part of the dcrypt project. * * Copyright: Copyright (C) dcrypt contributors 2008. All rights reserved. * License: MIT * Authors: Thomas Dixon */ module dcrypt.crypto.padding.RFC1321; import dcrypt.crypto.BlockCipherPadding; /** * This class implements the padding described in RFC1321 (MD5 spec). * Ex. [... 0x80, 0x00 ... 0x00] */ class RFC1321 : BlockCipherPadding { char[] name() { return "RFC1321"; } ubyte[] pad(uint len) { ubyte[] output = new ubyte[len]; output[0] = 0x80; output[1..output.length] = 0; return output; } uint unpad(void[] input_) { ubyte[] input = cast(ubyte[]) input_; uint len = input.length; while (len-- > 0) if (input[len] != 0) break; if (input[len] != 0x80) throw new InvalidPaddingError(name()~": Incorrect padding."); return (input.length - len); } }