From e9ba420cfc46b61eb8ea96f360b6e08850cf6b6f Mon Sep 17 00:00:00 2001 From: "Marshall T. Vandegrift" Date: Sat, 26 Jul 2008 14:19:26 -0400 Subject: [PATCH] Converted DES decryption to a Python/C module --- setup.py | 6 +- src/calibre/__init__.py | 2 +- src/calibre/ebooks/lit/reader.py | 9 +- src/calibre/utils/msdes/d3des.h | 156 ++++++ src/calibre/utils/msdes/des.c | 693 ++++++++++++++++++++++++++ src/calibre/utils/msdes/msdesmodule.c | 98 ++++ src/calibre/utils/msdes/spr.h | 202 ++++++++ 7 files changed, 1160 insertions(+), 6 deletions(-) create mode 100644 src/calibre/utils/msdes/d3des.h create mode 100644 src/calibre/utils/msdes/des.c create mode 100644 src/calibre/utils/msdes/msdesmodule.c create mode 100644 src/calibre/utils/msdes/spr.h diff --git a/setup.py b/setup.py index 03cd53efe5..9150a28b90 100644 --- a/setup.py +++ b/setup.py @@ -53,7 +53,11 @@ if __name__ == '__main__': ext_modules = [Extension('calibre.plugins.lzx', sources=['src/calibre/utils/lzx/lzxmodule.c', 'src/calibre/utils/lzx/lzxd.c'], - include_dirs=['src/calibre/utils/lzx'])] + include_dirs=['src/calibre/utils/lzx']), + Extension('calibre.plugins.msdes', + sources=['src/calibre/utils/msdes/msdesmodule.c', + 'src/calibre/utils/msdes/des.c'], + include_dirs=['src/calibre/utils/msdes'])] if iswindows: ext_modules.append(Extension('calibre.plugins.winutil', sources=['src/calibre/utils/windows/winutil.c'], diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py index 65f1151e46..be12f3d102 100644 --- a/src/calibre/__init__.py +++ b/src/calibre/__init__.py @@ -61,7 +61,7 @@ if iswindows and getattr(sys, 'frozen', False): plugins = {} -for plugin in ['pictureflow', 'lzx'] + \ +for plugin in ['pictureflow', 'lzx', 'msdes'] + \ (['winutil'] if iswindows else []) + \ (['usbobserver'] if isosx else []): try: diff --git a/src/calibre/ebooks/lit/reader.py b/src/calibre/ebooks/lit/reader.py index 683f8d8dad..4fb5280a4d 100644 --- a/src/calibre/ebooks/lit/reader.py +++ b/src/calibre/ebooks/lit/reader.py @@ -13,9 +13,9 @@ import re from calibre.ebooks.lit import LitError from calibre.ebooks.lit.maps import OPF_MAP, HTML_MAP import calibre.ebooks.lit.mssha1 as mssha1 -import calibre.ebooks.lit.msdes as msdes from calibre import plugins lzx, lxzerror = plugins['lzx'] +msdes, msdeserror = plugins['msdes'] OPF_DECL = """ > 3] & bytebit[m]) ? 1 : 0; + } + for( i = 0; i < 16; i++ ) { + if( edf == DE1 ) m = (15 - i) << 1; + else m = i << 1; + n = m + 1; + kn[m] = kn[n] = 0L; + for( j = 0; j < 28; j++ ) { + l = j + totrot[i]; + if( l < 28 ) pcr[j] = pc1m[l]; + else pcr[j] = pc1m[l - 28]; + } + for( j = 28; j < 56; j++ ) { + l = j + totrot[i]; + if( l < 56 ) pcr[j] = pc1m[l]; + else pcr[j] = pc1m[l - 28]; + } + for( j = 0; j < 24; j++ ) { + if( pcr[pc2[j]] ) kn[m] |= bigbyte[j]; + if( pcr[pc2[j+24]] ) kn[n] |= bigbyte[j]; + } + } + cookey(kn); + return; + } + +static void cookey(raw1) +unsigned long *raw1; +{ + unsigned long *cook, *raw0; + unsigned long dough[32]; + int i; + + cook = dough; + for( i = 0; i < 16; i++, raw1++ ) { + raw0 = raw1++; + *cook = (*raw0 & 0x00fc0000L) << 6; + *cook |= (*raw0 & 0x00000fc0L) << 10; + *cook |= (*raw1 & 0x00fc0000L) >> 10; + *cook++ |= (*raw1 & 0x00000fc0L) >> 6; + *cook = (*raw0 & 0x0003f000L) << 12; + *cook |= (*raw0 & 0x0000003fL) << 16; + *cook |= (*raw1 & 0x0003f000L) >> 4; + *cook++ |= (*raw1 & 0x0000003fL); + } + usekey(dough); + return; + } + +void cpkey(into) +unsigned long *into; +{ + unsigned long *from, *endp; + + from = KnL, endp = &KnL[32]; + while( from < endp ) *into++ = *from++; + return; + } + +void usekey(from) +unsigned long *from; +{ + unsigned long *to, *endp; + + to = KnL, endp = &KnL[32]; + while( to < endp ) *to++ = *from++; + return; + } + +void des(inblock, outblock) +unsigned char *inblock, *outblock; +{ + unsigned long work[2]; + + scrunch(inblock, work); + desfunc(work, KnL); + unscrun(work, outblock); + return; + } + + +static void scrunch(outof, into) +unsigned char *outof; +unsigned long *into; +{ + *into = (*outof++ & 0xffL) << 24; + *into |= (*outof++ & 0xffL) << 16; + *into |= (*outof++ & 0xffL) << 8; + *into++ |= (*outof++ & 0xffL); + *into = (*outof++ & 0xffL) << 24; + *into |= (*outof++ & 0xffL) << 16; + *into |= (*outof++ & 0xffL) << 8; + *into |= (*outof & 0xffL); + return; + } + + +static void unscrun(outof, into) +unsigned long *outof; +unsigned char *into; +{ + *into++ = (*outof >> 24) & 0xffL; + *into++ = (*outof >> 16) & 0xffL; + *into++ = (*outof >> 8) & 0xffL; + *into++ = *outof++ & 0xffL; + *into++ = (*outof >> 24) & 0xffL; + *into++ = (*outof >> 16) & 0xffL; + *into++ = (*outof >> 8) & 0xffL; + *into = *outof & 0xffL; + return; + } + +#include "spr.h" +/* +static unsigned long SP1[64] = { + 0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L, + 0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L, + 0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L, + 0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L, + 0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L, + 0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L, + 0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L, + 0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L, + 0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L, + 0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L, + 0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L, + 0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L, + 0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L, + 0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L, + 0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L, + 0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L }; + +static unsigned long SP2[64] = { + 0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L, + 0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L, + 0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L, + 0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L, + 0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L, + 0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L, + 0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L, + 0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L, + 0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L, + 0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L, + 0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L, + 0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L, + 0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L, + 0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L, + 0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L, + 0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L }; + +static unsigned long SP3[64] = { + 0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L, + 0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L, + 0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L, + 0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L, + 0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L, + 0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L, + 0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L, + 0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L, + 0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L, + 0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L, + 0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L, + 0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L, + 0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L, + 0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L, + 0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L, + 0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L }; + +static unsigned long SP4[64] = { + 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L, + 0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L, + 0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L, + 0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L, + 0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L, + 0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L, + 0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L, + 0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L, + 0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L, + 0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L, + 0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L, + 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L, + 0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L, + 0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L, + 0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L, + 0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L }; + +static unsigned long SP5[64] = { + 0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L, + 0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L, + 0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L, + 0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L, + 0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L, + 0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L, + 0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L, + 0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L, + 0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L, + 0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L, + 0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L, + 0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L, + 0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L, + 0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L, + 0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L, + 0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L }; + +static unsigned long SP6[64] = { + 0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L, + 0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L, + 0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L, + 0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L, + 0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L, + 0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L, + 0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L, + 0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L, + 0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L, + 0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L, + 0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L, + 0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L, + 0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L, + 0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L, + 0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L, + 0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L }; + +static unsigned long SP7[64] = { + 0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L, + 0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L, + 0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L, + 0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L, + 0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L, + 0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L, + 0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L, + 0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L, + 0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L, + 0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L, + 0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L, + 0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L, + 0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L, + 0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L, + 0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L, + 0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L }; + +static unsigned long SP8[64] = { + 0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L, + 0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L, + 0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L, + 0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L, + 0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L, + 0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L, + 0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L, + 0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L, + 0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L, + 0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L, + 0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L, + 0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L, + 0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L, + 0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L, + 0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L, + 0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L }; +*/ + + +static void desfunc(block, keys) +unsigned long *block, *keys; +{ + unsigned long fval, work, right, leftt; + int round; + + leftt = block[0]; + right = block[1]; + work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL; + right ^= work; + leftt ^= (work << 4); + work = ((leftt >> 16) ^ right) & 0x0000ffffL; + right ^= work; + leftt ^= (work << 16); + work = ((right >> 2) ^ leftt) & 0x33333333L; + leftt ^= work; + right ^= (work << 2); + work = ((right >> 8) ^ leftt) & 0x00ff00ffL; + leftt ^= work; + right ^= (work << 8); + right = ((right << 1) | ((right >> 31) & 1L)) & 0xffffffffL; + work = (leftt ^ right) & 0xaaaaaaaaL; + leftt ^= work; + right ^= work; + leftt = ((leftt << 1) | ((leftt >> 31) & 1L)) & 0xffffffffL; + + for( round = 0; round < 8; round++ ) { + work = (right << 28) | (right >> 4); + work ^= *keys++; + fval = SP7[ work & 0x3fL]; + fval |= SP5[(work >> 8) & 0x3fL]; + fval |= SP3[(work >> 16) & 0x3fL]; + fval |= SP1[(work >> 24) & 0x3fL]; + work = right ^ *keys++; + fval |= SP8[ work & 0x3fL]; + fval |= SP6[(work >> 8) & 0x3fL]; + fval |= SP4[(work >> 16) & 0x3fL]; + fval |= SP2[(work >> 24) & 0x3fL]; + leftt ^= fval; + work = (leftt << 28) | (leftt >> 4); + work ^= *keys++; + fval = SP7[ work & 0x3fL]; + fval |= SP5[(work >> 8) & 0x3fL]; + fval |= SP3[(work >> 16) & 0x3fL]; + fval |= SP1[(work >> 24) & 0x3fL]; + work = leftt ^ *keys++; + fval |= SP8[ work & 0x3fL]; + fval |= SP6[(work >> 8) & 0x3fL]; + fval |= SP4[(work >> 16) & 0x3fL]; + fval |= SP2[(work >> 24) & 0x3fL]; + right ^= fval; + } + + right = (right << 31) | (right >> 1); + work = (leftt ^ right) & 0xaaaaaaaaL; + leftt ^= work; + right ^= work; + leftt = (leftt << 31) | (leftt >> 1); + work = ((leftt >> 8) ^ right) & 0x00ff00ffL; + right ^= work; + leftt ^= (work << 8); + work = ((leftt >> 2) ^ right) & 0x33333333L; + right ^= work; + leftt ^= (work << 2); + work = ((right >> 16) ^ leftt) & 0x0000ffffL; + leftt ^= work; + right ^= (work << 16); + work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL; + leftt ^= work; + right ^= (work << 4); + *block++ = right; + *block = leftt; + return; + } + +#ifdef D2_DES + +void des2key(hexkey, mode) /* stomps on Kn3 too */ +unsigned char *hexkey; /* unsigned char[16] */ +short mode; +{ + short revmod; + + revmod = (mode == EN0) ? DE1 : EN0; + deskey(&hexkey[8], revmod); + cpkey(KnR); + deskey(hexkey, mode); + cpkey(Kn3); /* Kn3 = KnL */ + return; + } + +void Ddes(from, into) +unsigned char *from, *into; /* unsigned char[8] */ +{ + unsigned long work[2]; + + scrunch(from, work); + desfunc(work, KnL); + desfunc(work, KnR); + desfunc(work, Kn3); + unscrun(work, into); + return; + } + +void D2des(from, into) +unsigned char *from; /* unsigned char[16] */ +unsigned char *into; /* unsigned char[16] */ +{ + unsigned long *right, *l1, swap; + unsigned long leftt[2], bufR[2]; + + right = bufR; + l1 = &leftt[1]; + scrunch(from, leftt); + scrunch(&from[8], right); + desfunc(leftt, KnL); + desfunc(right, KnL); + swap = *l1; + *l1 = *right; + *right = swap; + desfunc(leftt, KnR); + desfunc(right, KnR); + swap = *l1; + *l1 = *right; + *right = swap; + desfunc(leftt, Kn3); + desfunc(right, Kn3); + unscrun(leftt, into); + unscrun(right, &into[8]); + return; + } + +void makekey(aptr, kptr) +char *aptr; /* NULL-terminated */ +unsigned char *kptr; /* unsigned char[8] */ +{ + unsigned char *store; + int first, i; + unsigned long savek[96]; + + cpDkey(savek); + des2key(Df_Key, EN0); + for( i = 0; i < 8; i++ ) kptr[i] = Df_Key[i]; + first = 1; + while( (*aptr != '\0') || first ) { + store = kptr; + for( i = 0; i < 8 && (*aptr != '\0'); i++ ) { + *store++ ^= *aptr & 0x7f; + *aptr++ = '\0'; + } + Ddes(kptr, kptr); + first = 0; + } + useDkey(savek); + return; + } + +void make2key(aptr, kptr) +char *aptr; /* NULL-terminated */ +unsigned char *kptr; /* unsigned char[16] */ +{ + unsigned char *store; + int first, i; + unsigned long savek[96]; + + cpDkey(savek); + des2key(Df_Key, EN0); + for( i = 0; i < 16; i++ ) kptr[i] = Df_Key[i]; + first = 1; + while( (*aptr != '\0') || first ) { + store = kptr; + for( i = 0; i < 16 && (*aptr != '\0'); i++ ) { + *store++ ^= *aptr & 0x7f; + *aptr++ = '\0'; + } + D2des(kptr, kptr); + first = 0; + } + useDkey(savek); + return; + } + +#ifndef D3_DES /* D2_DES only */ + +void cp2key(into) +unsigned long *into; /* unsigned long[64] */ +{ + unsigned long *from, *endp; + + cpkey(into); + into = &into[32]; + from = KnR, endp = &KnR[32]; + while( from < endp ) *into++ = *from++; + return; + } + +void use2key(from) /* stomps on Kn3 too */ +unsigned long *from; /* unsigned long[64] */ +{ + unsigned long *to, *endp; + + usekey(from); + from = &from[32]; + to = KnR, endp = &KnR[32]; + while( to < endp ) *to++ = *from++; + cpkey(Kn3); /* Kn3 = KnL */ + return; + } + +#else /* D3_DES too */ + +void des3key(hexkey, mode) +unsigned char *hexkey; /* unsigned char[24] */ +short mode; +{ + unsigned char *first, *third; + short revmod; + + if( mode == EN0 ) { + revmod = DE1; + first = hexkey; + third = &hexkey[16]; + } + else { + revmod = EN0; + first = &hexkey[16]; + third = hexkey; + } + deskey(&hexkey[8], revmod); + cpkey(KnR); + deskey(third, mode); + cpkey(Kn3); + deskey(first, mode); + return; + } + +void cp3key(into) +unsigned long *into; /* unsigned long[96] */ +{ + unsigned long *from, *endp; + + cpkey(into); + into = &into[32]; + from = KnR, endp = &KnR[32]; + while( from < endp ) *into++ = *from++; + from = Kn3, endp = &Kn3[32]; + while( from < endp ) *into++ = *from++; + return; + } + +void use3key(from) +unsigned long *from; /* unsigned long[96] */ +{ + unsigned long *to, *endp; + + usekey(from); + from = &from[32]; + to = KnR, endp = &KnR[32]; + while( to < endp ) *to++ = *from++; + to = Kn3, endp = &Kn3[32]; + while( to < endp ) *to++ = *from++; + return; + } + +static void D3des(unsigned char *, unsigned char *); + +static void D3des(from, into) /* amateur theatrics */ +unsigned char *from; /* unsigned char[24] */ +unsigned char *into; /* unsigned char[24] */ +{ + unsigned long swap, leftt[2], middl[2], right[2]; + + scrunch(from, leftt); + scrunch(&from[8], middl); + scrunch(&from[16], right); + desfunc(leftt, KnL); + desfunc(middl, KnL); + desfunc(right, KnL); + swap = leftt[1]; + leftt[1] = middl[0]; + middl[0] = swap; + swap = middl[1]; + middl[1] = right[0]; + right[0] = swap; + desfunc(leftt, KnR); + desfunc(middl, KnR); + desfunc(right, KnR); + swap = leftt[1]; + leftt[1] = middl[0]; + middl[0] = swap; + swap = middl[1]; + middl[1] = right[0]; + right[0] = swap; + desfunc(leftt, Kn3); + desfunc(middl, Kn3); + desfunc(right, Kn3); + unscrun(leftt, into); + unscrun(middl, &into[8]); + unscrun(right, &into[16]); + return; + } + +void make3key(aptr, kptr) +char *aptr; /* NULL-terminated */ +unsigned char *kptr; /* unsigned char[24] */ +{ + unsigned char *store; + int first, i; + unsigned long savek[96]; + + cp3key(savek); + des3key(Df_Key, EN0); + for( i = 0; i < 24; i++ ) kptr[i] = Df_Key[i]; + first = 1; + while( (*aptr != '\0') || first ) { + store = kptr; + for( i = 0; i < 24 && (*aptr != '\0'); i++ ) { + *store++ ^= *aptr & 0x7f; + *aptr++ = '\0'; + } + D3des(kptr, kptr); + first = 0; + } + use3key(savek); + return; + } + +#endif /* D3_DES */ +#endif /* D2_DES */ + +/* Validation sets: + * + * Single-length key, single-length plaintext - + * Key : 0123 4567 89ab cdef + * Plain : 0123 4567 89ab cde7 + * Cipher : c957 4425 6a5e d31d + * + * Double-length key, single-length plaintext - + * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 + * Plain : 0123 4567 89ab cde7 + * Cipher : 7f1d 0a77 826b 8aff + * + * Double-length key, double-length plaintext - + * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 + * Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff + * Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7 + * + * Triple-length key, single-length plaintext - + * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567 + * Plain : 0123 4567 89ab cde7 + * Cipher : de0b 7c06 ae5e 0ed5 + * + * Triple-length key, double-length plaintext - + * Key : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567 + * Plain : 0123 4567 89ab cdef 0123 4567 89ab cdff + * Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5 + * + * d3des V5.09 rwo 9208.04 20:31 Graven Imagery + **********************************************************************/ + diff --git a/src/calibre/utils/msdes/msdesmodule.c b/src/calibre/utils/msdes/msdesmodule.c new file mode 100644 index 0000000000..27ca46ffcb --- /dev/null +++ b/src/calibre/utils/msdes/msdesmodule.c @@ -0,0 +1,98 @@ +/* __license__ = 'GPL v3' + * __copyright__ = '2008, Marshall T. Vandegrift ' + * + * Python module C glue code. + */ + + +#include + +#include + +static char msdes_doc[] = +"Provide LIT-specific DES en/decryption."; + +static PyObject *MsDesError = NULL; + +static PyObject * +msdes_deskey(PyObject *self, PyObject *args) +{ + unsigned char *key = NULL; + unsigned int len = 0; + short int edf = 0; + + if (!PyArg_ParseTuple(args, "s#h", &key, &len, &edf)) { + return NULL; + } + + if (len != 8) { + PyErr_SetString(MsDesError, "Key length incorrect"); + return NULL; + } + + if ((edf != EN0) && (edf != DE1)) { + PyErr_SetString(MsDesError, "En/decryption direction invalid"); + return NULL; + } + + deskey(key, edf); + + Py_RETURN_NONE; +} + +static PyObject * +msdes_des(PyObject *self, PyObject *args) +{ + unsigned char *inbuf = NULL; + unsigned char *outbuf = NULL; + unsigned int len = 0; + unsigned int off = 0; + PyObject *retval = NULL; + + if (!PyArg_ParseTuple(args, "s#", &inbuf, &len)) { + return NULL; + } + + if ((len == 0) || ((len % 8) != 0)) { + PyErr_SetString(MsDesError, + "Input length not a multiple of the block size"); + return NULL; + } + + retval = PyString_FromStringAndSize(NULL, len); + if (retval == NULL) { + return NULL; + } + outbuf = (unsigned char *)PyString_AS_STRING(retval); + + for (off = 0; off < len; off += 8) { + des((inbuf + off), (outbuf + off)); + } + + return retval; +} + +static PyMethodDef msdes_methods[] = { + { "deskey", &msdes_deskey, METH_VARARGS, "Provide a new key for DES en/decryption." }, + { "des", &msdes_des, METH_VARARGS, "Perform DES en/decryption." }, + { NULL, NULL } +}; + +PyMODINIT_FUNC +initmsdes(void) +{ + PyObject *m; + + m = Py_InitModule3("msdes", msdes_methods, msdes_doc); + if (m == NULL) { + return; + } + + MsDesError = PyErr_NewException("msdes.MsDesError", NULL, NULL); + Py_INCREF(MsDesError); + PyModule_AddObject(m, "MsDesError", MsDesError); + PyModule_AddObject(m, "EN0", PyInt_FromLong(EN0)); + PyModule_AddObject(m, "DE1", PyInt_FromLong(DE1)); + + return; +} diff --git a/src/calibre/utils/msdes/spr.h b/src/calibre/utils/msdes/spr.h new file mode 100644 index 0000000000..fdcf5e3e46 --- /dev/null +++ b/src/calibre/utils/msdes/spr.h @@ -0,0 +1,202 @@ +/* crypto/des/spr.h */ +/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +static unsigned long SP1[64] = { +0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, +0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L, +0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L, +0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L, +0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L, +0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, +0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L, +0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L, +0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L, +0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L, +0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, +0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L, +0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L, +0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L, +0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L, +0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L +}; +static unsigned long SP2[64] = { +0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, +0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L, +0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L, +0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L, +0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L, +0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, +0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L, +0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L, +0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L, +0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L, +0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, +0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L, +0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L, +0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L, +0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L, +0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L +}; +static unsigned long SP3[64] = { +0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, +0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L, +0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L, +0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L, +0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L, +0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, +0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L, +0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L, +0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L, +0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L, +0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, +0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L, +0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L, +0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L, +0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L, +0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L +}; +static unsigned long SP4[64] = { +0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, +0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L, +0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L, +0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L, +0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L, +0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, +0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L, +0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L, +0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L, +0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L, +0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, +0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L, +0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L, +0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L, +0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L, +0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L +}; +static unsigned long SP5[64] = { +0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, +0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L, +0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L, +0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L, +0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L, +0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, +0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L, +0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L, +0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L, +0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L, +0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, +0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L, +0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L, +0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L, +0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L, +0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L +}; +static unsigned long SP6[64] = { +0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, +0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L, +0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L, +0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L, +0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L, +0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, +0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L, +0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L, +0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L, +0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L, +0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, +0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L, +0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L, +0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L, +0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L, +0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, +}; +static unsigned long SP7[64] = { +0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, +0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L, +0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L, +0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L, +0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L, +0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, +0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L, +0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L, +0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L, +0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L, +0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, +0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L, +0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L, +0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L, +0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L, +0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, +}; +static unsigned long SP8[64] = { +0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, +0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L, +0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L, +0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L, +0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L, +0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, +0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L, +0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L, +0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L, +0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L, +0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, +0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L, +0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L, +0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L, +0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L, +0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, +};