Cryptography-Digest Digest #702, Volume #12 Sun, 17 Sep 00 17:13:00 EDT
Contents:
Re: Killer aircraft to fly again? (Mok-Kong Shen)
Re: Lossless compression defeats watermarks (Scott Craver)
S-Boxes (Anonymous)
wince encryption algorithm (Nomen Nescio)
Re: SDMI Crypto Challenge (Scott Craver)
Re: question about delastelle cipher in Bauer's book (Mok-Kong Shen)
Bugs 3.4.0 and Bcrypt 2.0 : Open Source and Multiplateform (Sylvain Martinez)
----------------------------------------------------------------------------
From: Mok-Kong Shen <[EMAIL PROTECTED]>
Crossposted-To: sci.military.naval,alt.conspiracy,sci.geo.earthquakes
Subject: Re: Killer aircraft to fly again?
Date: Sun, 17 Sep 2000 21:30:38 +0200
[EMAIL PROTECTED] wrote:
>
[snip]
Please kindly don't cross-post to sci.crypt stuffs
that have nothing to do with cryptology. Thanks.
M. K. Shen
------------------------------
From: [EMAIL PROTECTED] (Scott Craver)
Subject: Re: Lossless compression defeats watermarks
Date: 17 Sep 2000 19:56:09 GMT
Matthew Skala <[EMAIL PROTECTED]> wrote:
>
>If a watermarking scheme works perfectly (in the sense of being
>inmperceptible by humans) and a lossy compression scheme works perfectly
>(in the sense of maximizing compression without harming perceptual
>quality) then compressing and decompressing a signal will have the effect
>of removing the watermark.
On the other hand, we have Ross Anderson and Fabien Petitcolas's
observation: if perfect compression existed, then we would
still have steganography. Simply take any string of encrypted
text and feed it into the Perfect Image Decompressor. Mail
the output to your friend.
>Thus, the watermark will necessarily be in the part of the signal that is
>thrown out by the lossy compression.
Well, if the compression is truly perfect, maybe. But this
will not happen.
Also, there are lots of "channels" in an image which are
often imperceptible by users but off-limits to any fair compression
algorithm. Perceptible but arbitrary. For instance, using
Photoshop to add a very subtle, continuous spatial deformation to a
part of the image. Of the original image I and deformed image D,
no algorithm can tell which is the "right" one, unless the image is
something fragile to deformations (like a grid of black and white
pixels.) A compression scheme could not "undo" your deformation,
nor compress I and D to the same thing.
>Going in the other direction, if you have a watermarking scheme that
>survives lossy compression, then that implies some deficiency in either
>the watermarking scheme or the lossy compression or both: either the
>watermark is altering the perceptible part of the signal, or the lossy
>compression is transmitting some imperceptible information.
Certain aspects of the image are technically perceptible,
especially in comparison to the original, but unimportant enough
to be effectively ignored by the viewer. In fact, the pioneering
work of Cox et al consisted of tweaking low-frequency NxN DCT
coefficients of an NxN image. This has the appearance of
overlaying a kind of transparent, smooth gauzy stuff to the image,
which is "perceptible enough" to survive all manner of compression.
You can't see it w/o comparison to the original.
When I was working on a watermarking article, a professor
dropped by my cube (I was working at Intel, he on sabbatical)
and I showed him an illustration of 3 images, one unmarked
and one with a low-freq DCT mark. "It looks like clouds,"
he said. It turned out he was relaxing his eyes, the way you
look at stereograms, to superimpose the two; a trick he
learned when studying the effects of image compression.
>The success of watermarking schemes, in a world of lossy compression,
>depends upon either the user's willingness to accept signal degradation,
>or the deficiencies of the lossy compression at removing spurious data.
Heh heh. The success of watermarking depends on more than that.
Compression is no big deal; the problem is the 500 bazillion
different ways one can subtly alter an image in Photoshop.
Nothing is robust to them all.
>--
>Matthew Skala
-S
------------------------------
Date: Sun, 17 Sep 2000 22:04:02 +0200
From: Anonymous <[EMAIL PROTECTED]>
Subject: S-Boxes
Sorry for me newbie question. What are S-Boxes? What are they
used for and how are they built?
------------------------------
From: Nomen Nescio <[EMAIL PROTECTED]>
Subject: wince encryption algorithm
Date: Sun, 17 Sep 2000 22:10:10 +0200 (CEST)
This is the secret Ace (and WinAce) encryption algorithm. It is a
combination of a Blowfish derivation and a SHA-1 derivation and it
uses Cipher Block Chaining. I called it AceFish therefore...
This code will only work on machines with Intel byte order! It
shouldnt be too difficult to adapt it for Motorola byte order,
anyway.
==== begin AceFish.h ================================================
ifndef __ACEFISH_H__
define __ACEFISH_H__
typedef unsigned long u32
class AceFish
u32 _p18
u32 _s4256
u32 _cbc0, _cbc1 // for cipher block chaining
static void hash(const char str, u32 hash5)
void encrypt(u32 res_l, u32 res_r, u32 in_l, u32 in_r)
void decrypt(u32 res_l, u32 res_r, u32 in_l, u32 in_r)
public:
AceFish(const char password)
void encrypt(void buffer, size_t bytes) // (bytes 8) == 0!!
void decrypt(void buffer, size_t bytes) // (bytes 8) == 0!!
void resetCBC()
_cbc0 = _cbc1 = 0
endif
==== end AceFish.h ==================================================
==== begin AceFish.cpp ==============================================
include <string.h>
include "AceFish.h"
static u32 InitP18 =
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822,
0x299f31d0, 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377,
0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5,
0xb5470917, 0x9216d5d9, 0x8979fb1b
static u32 InitS4256 =
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed,
0x6a267e96, 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7,
0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3,
0xf4933d7e, 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 0xc5d1b023,
0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda,
0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af,
0x7c72e993, 0xb3ee1411, 0x636fbc2a, 0x2da9c55d, 0x741831f6,
0xce5c3e16, 0x9b87901e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381,
0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d,
0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5,
0x0f6d6ff3, 0x83f44239, 0x2e0b4482, 0xa4842004, 0x69c8f04a,
0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c,
0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3,
0x3b8b5ebe, 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 0x37d0d724,
0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b,
0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b, 0x976ce0bd,
0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f,
0x9b30952c, 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd,
0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39,
0xb9d3fbdb, 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x412c7279,
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 0x3c7516df,
0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e,
0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98,
0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 0x9a53e479, 0xb6f84565,
0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341,
0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0,
0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64,
0x8888b812, 0x900df01c, 0x4fad5ea0, 0x688fc31c, 0xd1cff191,
0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0,
0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5,
0xfb9d35cf, 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 0x2464369b,
0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f,
0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9, 0x11c81968,
0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5,
0x571be91f, 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6,
0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799,
0x6e85076a
,
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0,
0x49a7df7d, 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff,
0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340,
0xe4183a3e, 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 0x4cdd2086,
0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305,
0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a,
0x3cb574b2, 0x25837a58, 0xdc0921bd, 0xd19113f9, 0x7ca92ff6,
0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634,
0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38,
0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79,
0x5679b072, 0xbcaf89af, 0xde9a771f, 0xd9930810, 0xb38bae12,
0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a,
0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002,
0x133ae4dd, 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, 0xf28fe6ed,
0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1,
0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa, 0x2965dcb9,
0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7,
0x361d2b3d, 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6,
0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1,
0x018cff28, 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 0x1521b628,
0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b,
0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32,
0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 0x9b540b19, 0x875fa099,
0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f,
0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb,
0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea,
0xfe28ed61, 0xee7c3c73, 0x5d4a14d9, 0xe864b7e3, 0x42105d14,
0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e,
0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b,
0x5692b285, 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061, 0x3372f092,
0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460,
0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e, 0xe8efd855,
0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3,
0x105588cd, 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8,
0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b,
0xdb83adf7
,
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7,
0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a,
0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74,
0xbf8b8840, 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 0x96eb27b3,
0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4,
0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35,
0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 0x1dc9faf7, 0x4b6d1856,
0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7,
0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc,
0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9,
0x5ef47e1c, 0x9029317c, 0xfdf8e802, 0x04272f70, 0x80bb155c,
0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb,
0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1,
0xcad18115, 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, 0xd0127845,
0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa,
0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74, 0x3a6f6eab,
0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7,
0xcc00ffa3, 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c,
0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf,
0x763bd6eb, 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 0x6a124237,
0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e,
0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346,
0xf6381fb0, 0x7745ae04, 0xd736fccc, 0x83426b33, 0xf01eab71,
0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299,
0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661,
0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770,
0x8cd55591, 0xc902de4c, 0xb90bace1, 0xbb8205d0, 0x11a86248,
0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d,
0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4,
0x0de6d027, 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62, 0x11e69ed7,
0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de,
0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188, 0x39720a3d,
0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e,
0xb161e6f8, 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4,
0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e,
0x406000e0
,
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e,
0x4fa33742, 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315,
0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be,
0x6a366eb4, 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 0x2939bbdb,
0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa,
0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3,
0xf752f7da, 0x3f046f69, 0x77fa0a59, 0x80e4a915, 0x87b08601,
0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9,
0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71,
0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc,
0xf8d56629, 0x79132e28, 0x785f0191, 0xed756055, 0xf7960e44,
0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b,
0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167,
0xccad925f, 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 0xa8b6e37e,
0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224,
0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd, 0x586cdecf,
0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8,
0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e,
0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671,
0xaf537d5d, 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, 0x6f3f3b82,
0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7,
0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a,
0xc6913667, 0x8df9317c, 0xe0b12b4f, 0xf79e59b7, 0x43f5bb3a,
0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71,
0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e,
0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df,
0xd3a0342b, 0x8971f21e, 0x1b0a7441, 0x4ba3348c, 0xc5be7120,
0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166,
0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697,
0x88d273cc, 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd,
0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222,
0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3, 0x38abbd60,
0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c,
0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0,
0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3,
0x3ac372e6
void AceFish::hash(const char str, u32 hash5)
u32 w80 = 0
int len = strlen(str)
memcpy(w, str, len)
((unsigned char)w)len = 0x80
w15 = 8len
hash0 = 0x67452301UL hash1 = 0xEFCDAB89UL
hash2 = 0x98BADCFEUL hash3 = 0x10325476UL
hash4 = 0xC3D2E1F0UL
int t
for (t = 16 t < 80 t++)
wt = wt-3 wt-8 wt- 14 wt-16
u32 a = hash0, b = hash1, c = hash2, d = hash3,
e = hash4
for (t = 0 t < 20 t++)
u32 temp = ((a << 5) (a >> 27)) + ((b c) (~b d)) +
e + wt + 0x5A827999UL
e = d d = c c = (b << 30) (b >> 2) b = a a = temp
for (t = 20 t < 40 t++)
u32 temp = ((a << 5) (a >> 27)) + (b c d) + e +
wt + 0x6ED9EBA1UL
e = d d = c c = (b << 30) (b >> 2) b = a a = temp
for (t = 40 t < 60 t++)
u32 temp = ((a << 5) (a >> 27)) +
((b c) (b d) (c d)) + e +
wt + 0x8F1BBCDCUL
e = d d = c c = (b << 30) (b >> 2) b = a a = temp
for (t = 60 t < 80 t++)
u32 temp = ((a << 5) (a >> 27)) + (b c d) + e +
wt + 0xCA62C1D6UL
e = d d = c c = (b << 30) (b >> 2) b = a a = temp
hash0 += a hash1 += b hash2 += c
hash3 += d hash4 += e
AceFish::AceFish(const char password)
u32 h5
hash(password, h)
memcpy(_p, InitP, 18 sizeof(u32))
memcpy(_s, InitS, 4 256 sizeof(u32))
int i
for (i = 0 i < 18 ++i)
_pi = hi 5
u32 data_l = 0, data_r = 0
for (i = 0 i < 18 i += 2)
encrypt(data_l, data_r, data_l, data_r)
_pi = data_l
_pi + 1 = data_r
for (i = 0 i < 4 ++i)
for (int j = 0 j < 256 j += 2)
encrypt(data_l, data_r, data_l, data_r)
_sij = data_l
_sij + 1 = data_r
resetCBC()
void AceFish::encrypt(u32 res_l, u32 res_r, u32 in_l, u32 in_r)
for (int i = 0 i < 16 ++i)
in_l = _pi
u32 temp = _s0((unsigned char)in_l+3)
temp += _s1((unsigned char)in_l+2)
temp = _s2((unsigned char)in_l+1)
temp += _s3(unsigned char)in_l
in_r = temp
temp = in_l in_l = in_r in_r = temp
res_l = in_r _p17
res_r = in_l _p16
void AceFish::decrypt(u32 res_l, u32 res_r, u32 in_l, u32 in_r)
for (int i = 17 i > 1 --i)
in_l = _pi
u32 temp = _s0((unsigned char)in_l+3)
temp += _s1((unsigned char)in_l+2)
temp = _s2((unsigned char)in_l+1)
temp += _s3(unsigned char)in_l
in_r = temp
temp = in_l in_l = in_r in_r = temp
res_l = in_r _p0
res_r = in_l _p1
void AceFish::encrypt(void buffer, size_t bytes)
u32 b = (u32)buffer
size_t blocks = bytes >> 3
while (blocks--)
b0 = _cbc0 b1 = _cbc1
encrypt(b0, b1, b0, b1)
_cbc0 = b0 _cbc1 = b1
b += 2
void AceFish::decrypt(void buffer, size_t bytes)
u32 b = (u32)buffer
size_t blocks = bytes >> 3
while (blocks--)
u32 e0 = b0, e1 = b1
decrypt(b0, b1, b0, b1)
b0 = _cbc0 b1 = _cbc1
_cbc0 = e0 _cbc1 = e1
b += 2
==== end AceFish.cpp ================================================
==== begin AceFishTest.cpp ==========================================
include <stdio.h>
include <string.h>
include "AceFish.h"
unsigned char small_ace_file95 =
0xe9, 0xec, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x2a, // 0: .......
0x2a, 0x41, 0x43, 0x45, 0x2a, 0x2a, 0x0a, 0x14, // 8: ACE..
0x02, 0x00, 0x6f, 0x96, 0x2a, 0x29, 0x90, 0x69, // 10: ..o.).i
0x39, 0xfb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, // 18: 9......$
0xd5, 0x24, 0x00, 0x01, 0x01, 0x40, 0x18, 0x00, // 20: .$...@..
0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x6c, 0x96, // 28: ......l.
0x2a, 0x29, 0x20, 0x00, 0x00, 0x00, 0x88, 0x28, // 30: ) ....(
0x37, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 38: 7.......
0x05, 0x00, 0x78, 0x2e, 0x74, 0x78, 0x74, 0x1e, // 40: ..x.txt.
0xdc, 0xa1, 0x1a, 0xb5, 0x57, 0x12, 0x20, 0x05, // 48: ....W. .
0x88, 0x7d, 0x5c, 0x26, 0xcd, 0x21, 0x2a, 0xad, // 50: ..!.
0xe7, 0x20, 0x8c, 0x42, 0x2c, 0xb2, 0x62 // 58: . .B,.b
int main()
const u32 file_offset = 0x47
const unsigned char data = small_ace_file + file_offset
const size_t size = sizeof(small_ace_file) - file_offset
unsigned char buffersize
memcpy(buffer, data, size)
AceFish acefish("password")
acefish.decrypt(buffer, size)
printf("decrypted data: sn", buffer)
acefish.resetCBC()
acefish.encrypt(buffer, size)
for (size_t i = 0 i < size i++)
if (bufferi != datai)
printf("re-encryption failedn")
return 0
printf("re-encryption was successfuln")
return 0
==== end AceFishTest.cpp ============================================
------------------------------
From: [EMAIL PROTECTED] (Scott Craver)
Subject: Re: SDMI Crypto Challenge
Date: 17 Sep 2000 20:05:38 GMT
Tom St Denis <[EMAIL PROTECTED]> wrote:
>
>If you can't hear the watermark then I can do an analogue rip. So
>what. Or I can filter it out. Or ... Just like hiding messages in
>JPEG's. I can always filter it out.
None of these will work either. Any audio watermark worth
the Barry Manilow it's printed on will be able to survive
digital-analog conversion. Some survive FM transmission.
And filtering is a brute process which will squelch the music
along with the mark.
You can, of course, remove a mark, if you know where it is
and how it is embedded. Without that detail, it's not as
easy.
>Ever notice that the levy on CDs and DVDS is because of music/video
>piracy? But I often use CDs to pirate software ... hehhehehe so why
>don't all software companies get shares in the levy?
They're starting to. Note that Microsoft now sells "medialess"
OS licenses. Meaning, your computer comes with Win98 or Win2000,
but no CDs for reinstallation. If you want to replace your hard
drive, or move all your software to a new computer, tough: the
OEM license only applies to the specific setup you got from
the factory.
This is a (pretty strict) piracy prevention measure.
>Tom
-S
------------------------------
From: Mok-Kong Shen <[EMAIL PROTECTED]>
Subject: Re: question about delastelle cipher in Bauer's book
Date: Sun, 17 Sep 2000 22:41:56 +0200
Fritz Schneider wrote:
>
> I'm working through F. L. Bauer's book "Decrypted Secrets" and ran
> across something unfamiliar in section 4.2.3 (Delastelle cipher). He
[snip]
I looked at the place you referenced. The author's
argument is indeed not clear and likely to be invalid.
M. K. Shen
------------------------------
From: Sylvain Martinez <[EMAIL PROTECTED]>
Subject: Bugs 3.4.0 and Bcrypt 2.0 : Open Source and Multiplateform
Date: Sun, 17 Sep 2000 20:24:17 GMT
Hi,
Here are the latest news regarding the Private Key Dynamic Cryptography
Algorithm. Multiplatform (Unix/Windows), Free, Open Source.
- The new Library BUGS v3.4.0 is now available from:
http://www.bcrypt.com
Changes:
*Few changes in the errors check function
*New logs Management
*Progress report
*Minor bugs corrections
- The new Windows application for windows is available: bcrypt 2.0
http://www.bcrypt.com/crypto/bcrypt2_0.zip
This application uses the latest BUGS librarie version.
You can Crypt/Decrypt, Generate Keys.
- New Unix Package: bugs-3.4.0:
http://www.bcrypt.com/crypto/bugs-3.4.0.tgz
Changes:
* You now have an "interactive mode" for the bcrypt and bchat
(a secure chat) applications. These applications can now
prompt you for each parameter, this is more secure as before
someone could see your parameter by doing a 'ps'.
* Minor corrections in the logs generation.
- The contest to crack the BUGS algorithm is still running for
a symbolic 50 English Pounds:
http://www.bcrypt.com/crypto/contest_uk.html
About 200 people downloaded the information regarding this contest and
still noone managed to crack it.
These updates are the result of the feedback I received the last 2
months. There is still a lot of place for improvement, please keep
sending me your comments on:
[EMAIL PROTECTED]
Thanks for your support,
Sylvain Martinez.
---
Unix security administrator
BUGS crypto project: http://www.bcrypt.com
http://www.encryptsolutions.com
--
---
Unix security administrator
BUGS crypto project: http://www.bcrypt.com
http://www.encryptsolutions.com
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
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