version 1.1, 2003/11/16 12:07:50 |
version 1.2, 2005/02/26 23:04:17 |
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/* $NetBSD$ */ |
/* $NetBSD$ */ |
/* $OpenBSD: skipjack.c,v 1.3 2001/05/05 00:31:34 angelos Exp $ */ |
/* $OpenBSD: skipjack.c,v 1.3 2001/05/05 00:31:34 angelos Exp $ */ |
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/* |
/* |
* Further optimized test implementation of SKIPJACK algorithm |
* Further optimized test implementation of SKIPJACK algorithm |
* Mark Tillotson <markt@chaos.org.uk>, 25 June 98 |
* Mark Tillotson <markt@chaos.org.uk>, 25 June 98 |
* Optimizations suit RISC (lots of registers) machine best. |
* Optimizations suit RISC (lots of registers) machine best. |
* |
* |
* based on unoptimized implementation of |
* based on unoptimized implementation of |
* Panu Rissanen <bande@lut.fi> 960624 |
* Panu Rissanen <bande@lut.fi> 960624 |
* |
* |
* SKIPJACK and KEA Algorithm Specifications |
* SKIPJACK and KEA Algorithm Specifications |
* Version 2.0 |
* Version 2.0 |
* 29 May 1998 |
* 29 May 1998 |
*/ |
*/ |
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Line 23 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 23 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <opencrypto/cryptodev.h> |
#include <opencrypto/cryptodev.h> |
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static const u_int8_t ftable[0x100] = |
static const u_int8_t ftable[0x100] = |
{ |
{ |
0xa3, 0xd7, 0x09, 0x83, 0xf8, 0x48, 0xf6, 0xf4, |
0xa3, 0xd7, 0x09, 0x83, 0xf8, 0x48, 0xf6, 0xf4, |
0xb3, 0x21, 0x15, 0x78, 0x99, 0xb1, 0xaf, 0xf9, |
0xb3, 0x21, 0x15, 0x78, 0x99, 0xb1, 0xaf, 0xf9, |
0xe7, 0x2d, 0x4d, 0x8a, 0xce, 0x4c, 0xca, 0x2e, |
0xe7, 0x2d, 0x4d, 0x8a, 0xce, 0x4c, 0xca, 0x2e, |
0x52, 0x95, 0xd9, 0x1e, 0x4e, 0x38, 0x44, 0x28, |
0x52, 0x95, 0xd9, 0x1e, 0x4e, 0x38, 0x44, 0x28, |
0x0a, 0xdf, 0x02, 0xa0, 0x17, 0xf1, 0x60, 0x68, |
0x0a, 0xdf, 0x02, 0xa0, 0x17, 0xf1, 0x60, 0x68, |
0x12, 0xb7, 0x7a, 0xc3, 0xe9, 0xfa, 0x3d, 0x53, |
0x12, 0xb7, 0x7a, 0xc3, 0xe9, 0xfa, 0x3d, 0x53, |
0x96, 0x84, 0x6b, 0xba, 0xf2, 0x63, 0x9a, 0x19, |
0x96, 0x84, 0x6b, 0xba, 0xf2, 0x63, 0x9a, 0x19, |
0x7c, 0xae, 0xe5, 0xf5, 0xf7, 0x16, 0x6a, 0xa2, |
0x7c, 0xae, 0xe5, 0xf5, 0xf7, 0x16, 0x6a, 0xa2, |
0x39, 0xb6, 0x7b, 0x0f, 0xc1, 0x93, 0x81, 0x1b, |
0x39, 0xb6, 0x7b, 0x0f, 0xc1, 0x93, 0x81, 0x1b, |
0xee, 0xb4, 0x1a, 0xea, 0xd0, 0x91, 0x2f, 0xb8, |
0xee, 0xb4, 0x1a, 0xea, 0xd0, 0x91, 0x2f, 0xb8, |
0x55, 0xb9, 0xda, 0x85, 0x3f, 0x41, 0xbf, 0xe0, |
0x55, 0xb9, 0xda, 0x85, 0x3f, 0x41, 0xbf, 0xe0, |
0x5a, 0x58, 0x80, 0x5f, 0x66, 0x0b, 0xd8, 0x90, |
0x5a, 0x58, 0x80, 0x5f, 0x66, 0x0b, 0xd8, 0x90, |
0x35, 0xd5, 0xc0, 0xa7, 0x33, 0x06, 0x65, 0x69, |
0x35, 0xd5, 0xc0, 0xa7, 0x33, 0x06, 0x65, 0x69, |
0x45, 0x00, 0x94, 0x56, 0x6d, 0x98, 0x9b, 0x76, |
0x45, 0x00, 0x94, 0x56, 0x6d, 0x98, 0x9b, 0x76, |
0x97, 0xfc, 0xb2, 0xc2, 0xb0, 0xfe, 0xdb, 0x20, |
0x97, 0xfc, 0xb2, 0xc2, 0xb0, 0xfe, 0xdb, 0x20, |
0xe1, 0xeb, 0xd6, 0xe4, 0xdd, 0x47, 0x4a, 0x1d, |
0xe1, 0xeb, 0xd6, 0xe4, 0xdd, 0x47, 0x4a, 0x1d, |
0x42, 0xed, 0x9e, 0x6e, 0x49, 0x3c, 0xcd, 0x43, |
0x42, 0xed, 0x9e, 0x6e, 0x49, 0x3c, 0xcd, 0x43, |
0x27, 0xd2, 0x07, 0xd4, 0xde, 0xc7, 0x67, 0x18, |
0x27, 0xd2, 0x07, 0xd4, 0xde, 0xc7, 0x67, 0x18, |
0x89, 0xcb, 0x30, 0x1f, 0x8d, 0xc6, 0x8f, 0xaa, |
0x89, 0xcb, 0x30, 0x1f, 0x8d, 0xc6, 0x8f, 0xaa, |
0xc8, 0x74, 0xdc, 0xc9, 0x5d, 0x5c, 0x31, 0xa4, |
0xc8, 0x74, 0xdc, 0xc9, 0x5d, 0x5c, 0x31, 0xa4, |
0x70, 0x88, 0x61, 0x2c, 0x9f, 0x0d, 0x2b, 0x87, |
0x70, 0x88, 0x61, 0x2c, 0x9f, 0x0d, 0x2b, 0x87, |
0x50, 0x82, 0x54, 0x64, 0x26, 0x7d, 0x03, 0x40, |
0x50, 0x82, 0x54, 0x64, 0x26, 0x7d, 0x03, 0x40, |
0x34, 0x4b, 0x1c, 0x73, 0xd1, 0xc4, 0xfd, 0x3b, |
0x34, 0x4b, 0x1c, 0x73, 0xd1, 0xc4, 0xfd, 0x3b, |
0xcc, 0xfb, 0x7f, 0xab, 0xe6, 0x3e, 0x5b, 0xa5, |
0xcc, 0xfb, 0x7f, 0xab, 0xe6, 0x3e, 0x5b, 0xa5, |
0xad, 0x04, 0x23, 0x9c, 0x14, 0x51, 0x22, 0xf0, |
0xad, 0x04, 0x23, 0x9c, 0x14, 0x51, 0x22, 0xf0, |
0x29, 0x79, 0x71, 0x7e, 0xff, 0x8c, 0x0e, 0xe2, |
0x29, 0x79, 0x71, 0x7e, 0xff, 0x8c, 0x0e, 0xe2, |
0x0c, 0xef, 0xbc, 0x72, 0x75, 0x6f, 0x37, 0xa1, |
0x0c, 0xef, 0xbc, 0x72, 0x75, 0x6f, 0x37, 0xa1, |
0xec, 0xd3, 0x8e, 0x62, 0x8b, 0x86, 0x10, 0xe8, |
0xec, 0xd3, 0x8e, 0x62, 0x8b, 0x86, 0x10, 0xe8, |
0x08, 0x77, 0x11, 0xbe, 0x92, 0x4f, 0x24, 0xc5, |
0x08, 0x77, 0x11, 0xbe, 0x92, 0x4f, 0x24, 0xc5, |
0x32, 0x36, 0x9d, 0xcf, 0xf3, 0xa6, 0xbb, 0xac, |
0x32, 0x36, 0x9d, 0xcf, 0xf3, 0xa6, 0xbb, 0xac, |
0x5e, 0x6c, 0xa9, 0x13, 0x57, 0x25, 0xb5, 0xe3, |
0x5e, 0x6c, 0xa9, 0x13, 0x57, 0x25, 0xb5, 0xe3, |
0xbd, 0xa8, 0x3a, 0x01, 0x05, 0x59, 0x2a, 0x46 |
0xbd, 0xa8, 0x3a, 0x01, 0x05, 0x59, 0x2a, 0x46 |
}; |
}; |
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/* |
/* |
* For each key byte generate a table to represent the function |
* For each key byte generate a table to represent the function |
* ftable [in ^ keybyte] |
* ftable [in ^ keybyte] |
* |
* |
* These tables used to save an XOR in each stage of the G-function |
* These tables used to save an XOR in each stage of the G-function |
Line 94 subkey_table_gen (const u_int8_t *key, u |
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Line 94 subkey_table_gen (const u_int8_t *key, u |
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#define g2(ih, il, oh, ol) g(2, 3, 4, 5, ih, il, oh, ol) |
#define g2(ih, il, oh, ol) g(2, 3, 4, 5, ih, il, oh, ol) |
#define g6(ih, il, oh, ol) g(6, 7, 8, 9, ih, il, oh, ol) |
#define g6(ih, il, oh, ol) g(6, 7, 8, 9, ih, il, oh, ol) |
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#define g_inv(k0, k1, k2, k3, ih, il, oh, ol) \ |
#define g_inv(k0, k1, k2, k3, ih, il, oh, ol) \ |
{ \ |
{ \ |
ol = k##k3 [ih] ^ il; \ |
ol = k##k3 [ih] ^ il; \ |
Line 114 subkey_table_gen (const u_int8_t *key, u |
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Line 114 subkey_table_gen (const u_int8_t *key, u |
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* |
* |
* the appropriate g-function is inlined for each round |
* the appropriate g-function is inlined for each round |
* |
* |
* the data movement is minimized by rotating the names of the |
* the data movement is minimized by rotating the names of the |
* variables w1..w4, not their contents (saves 3 moves per round) |
* variables w1..w4, not their contents (saves 3 moves per round) |
* |
* |
* the loops are completely unrolled (needed to staticize choice of g) |
* the loops are completely unrolled (needed to staticize choice of g) |