diff options
| author | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-06-26 20:42:58 +0000 | 
|---|---|---|
| committer | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-06-26 20:42:58 +0000 | 
| commit | c5552ad03973839d83d32d7108f20c00f192633b (patch) | |
| tree | de32e4def600e56134cd085a7447cb6620542078 /target/linux/generic/files/crypto/ocf/safe/sha1.c | |
| parent | 7ec88f88f4c65a22b3b7e32ef87cb42dcb32a6fb (diff) | |
rename target/linux/generic-2.6 to generic
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21952 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/safe/sha1.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/safe/sha1.c | 279 | 
1 files changed, 279 insertions, 0 deletions
diff --git a/target/linux/generic/files/crypto/ocf/safe/sha1.c b/target/linux/generic/files/crypto/ocf/safe/sha1.c new file mode 100644 index 000000000..4e360e20d --- /dev/null +++ b/target/linux/generic/files/crypto/ocf/safe/sha1.c @@ -0,0 +1,279 @@ +/*	$KAME: sha1.c,v 1.5 2000/11/08 06:13:08 itojun Exp $	*/ +/* + * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. + * All rights reserved. + * + * 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 above 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. Neither the name of the project nor the names of its contributors + *    may be used to endorse or promote products derived from this software + *    without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT 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. + */ + +/* + * FIPS pub 180-1: Secure Hash Algorithm (SHA-1) + * based on: http://csrc.nist.gov/fips/fip180-1.txt + * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org> + */ + +#if 0 +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/sys/crypto/sha1.c,v 1.9 2003/06/10 21:36:57 obrien Exp $"); + +#include <sys/types.h> +#include <sys/cdefs.h> +#include <sys/time.h> +#include <sys/systm.h> + +#include <crypto/sha1.h> +#endif + +/* sanity check */ +#if BYTE_ORDER != BIG_ENDIAN +# if BYTE_ORDER != LITTLE_ENDIAN +#  define unsupported 1 +# endif +#endif + +#ifndef unsupported + +/* constant table */ +static u_int32_t _K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 }; +#define	K(t)	_K[(t) / 20] + +#define	F0(b, c, d)	(((b) & (c)) | ((~(b)) & (d))) +#define	F1(b, c, d)	(((b) ^ (c)) ^ (d)) +#define	F2(b, c, d)	(((b) & (c)) | ((b) & (d)) | ((c) & (d))) +#define	F3(b, c, d)	(((b) ^ (c)) ^ (d)) + +#define	S(n, x)		(((x) << (n)) | ((x) >> (32 - n))) + +#undef H +#define	H(n)	(ctxt->h.b32[(n)]) +#define	COUNT	(ctxt->count) +#define	BCOUNT	(ctxt->c.b64[0] / 8) +#define	W(n)	(ctxt->m.b32[(n)]) + +#define	PUTBYTE(x)	{ \ +	ctxt->m.b8[(COUNT % 64)] = (x);		\ +	COUNT++;				\ +	COUNT %= 64;				\ +	ctxt->c.b64[0] += 8;			\ +	if (COUNT % 64 == 0)			\ +		sha1_step(ctxt);		\ +     } + +#define	PUTPAD(x)	{ \ +	ctxt->m.b8[(COUNT % 64)] = (x);		\ +	COUNT++;				\ +	COUNT %= 64;				\ +	if (COUNT % 64 == 0)			\ +		sha1_step(ctxt);		\ +     } + +static void sha1_step(struct sha1_ctxt *); + +static void +sha1_step(ctxt) +	struct sha1_ctxt *ctxt; +{ +	u_int32_t	a, b, c, d, e; +	size_t t, s; +	u_int32_t	tmp; + +#if BYTE_ORDER == LITTLE_ENDIAN +	struct sha1_ctxt tctxt; +	bcopy(&ctxt->m.b8[0], &tctxt.m.b8[0], 64); +	ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2]; +	ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0]; +	ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6]; +	ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4]; +	ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10]; +	ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8]; +	ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14]; +	ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12]; +	ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18]; +	ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16]; +	ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22]; +	ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20]; +	ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26]; +	ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24]; +	ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30]; +	ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28]; +	ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34]; +	ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32]; +	ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38]; +	ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36]; +	ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42]; +	ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40]; +	ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46]; +	ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44]; +	ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50]; +	ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48]; +	ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54]; +	ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52]; +	ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58]; +	ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56]; +	ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62]; +	ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60]; +#endif + +	a = H(0); b = H(1); c = H(2); d = H(3); e = H(4); + +	for (t = 0; t < 20; t++) { +		s = t & 0x0f; +		if (t >= 16) { +			W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s)); +		} +		tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t); +		e = d; d = c; c = S(30, b); b = a; a = tmp; +	} +	for (t = 20; t < 40; t++) { +		s = t & 0x0f; +		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s)); +		tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t); +		e = d; d = c; c = S(30, b); b = a; a = tmp; +	} +	for (t = 40; t < 60; t++) { +		s = t & 0x0f; +		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s)); +		tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t); +		e = d; d = c; c = S(30, b); b = a; a = tmp; +	} +	for (t = 60; t < 80; t++) { +		s = t & 0x0f; +		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s)); +		tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t); +		e = d; d = c; c = S(30, b); b = a; a = tmp; +	} + +	H(0) = H(0) + a; +	H(1) = H(1) + b; +	H(2) = H(2) + c; +	H(3) = H(3) + d; +	H(4) = H(4) + e; + +	bzero(&ctxt->m.b8[0], 64); +} + +/*------------------------------------------------------------*/ + +void +sha1_init(ctxt) +	struct sha1_ctxt *ctxt; +{ +	bzero(ctxt, sizeof(struct sha1_ctxt)); +	H(0) = 0x67452301; +	H(1) = 0xefcdab89; +	H(2) = 0x98badcfe; +	H(3) = 0x10325476; +	H(4) = 0xc3d2e1f0; +} + +void +sha1_pad(ctxt) +	struct sha1_ctxt *ctxt; +{ +	size_t padlen;		/*pad length in bytes*/ +	size_t padstart; + +	PUTPAD(0x80); + +	padstart = COUNT % 64; +	padlen = 64 - padstart; +	if (padlen < 8) { +		bzero(&ctxt->m.b8[padstart], padlen); +		COUNT += padlen; +		COUNT %= 64; +		sha1_step(ctxt); +		padstart = COUNT % 64;	/* should be 0 */ +		padlen = 64 - padstart;	/* should be 64 */ +	} +	bzero(&ctxt->m.b8[padstart], padlen - 8); +	COUNT += (padlen - 8); +	COUNT %= 64; +#if BYTE_ORDER == BIG_ENDIAN +	PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]); +	PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]); +	PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]); +	PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]); +#else +	PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]); +	PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]); +	PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]); +	PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]); +#endif +} + +void +sha1_loop(ctxt, input, len) +	struct sha1_ctxt *ctxt; +	const u_int8_t *input; +	size_t len; +{ +	size_t gaplen; +	size_t gapstart; +	size_t off; +	size_t copysiz; + +	off = 0; + +	while (off < len) { +		gapstart = COUNT % 64; +		gaplen = 64 - gapstart; + +		copysiz = (gaplen < len - off) ? gaplen : len - off; +		bcopy(&input[off], &ctxt->m.b8[gapstart], copysiz); +		COUNT += copysiz; +		COUNT %= 64; +		ctxt->c.b64[0] += copysiz * 8; +		if (COUNT % 64 == 0) +			sha1_step(ctxt); +		off += copysiz; +	} +} + +void +sha1_result(ctxt, digest0) +	struct sha1_ctxt *ctxt; +	caddr_t digest0; +{ +	u_int8_t *digest; + +	digest = (u_int8_t *)digest0; +	sha1_pad(ctxt); +#if BYTE_ORDER == BIG_ENDIAN +	bcopy(&ctxt->h.b8[0], digest, 20); +#else +	digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2]; +	digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0]; +	digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6]; +	digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4]; +	digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10]; +	digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8]; +	digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14]; +	digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12]; +	digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18]; +	digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16]; +#endif +} + +#endif /*unsupported*/  | 
