Rename lib_generic/ to lib/

Now that the other architecture-specific lib directories have been
moved out of the top-level directory there's not much reason to have the
'_generic' suffix on the common lib directory.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

1 files changed, 452 insertions, 0 deletions

diff --git a/lib/sha1.c b/lib/sha1.c
new file mode 100644
index 0000000..da5bc16
--- /dev/null
+++ b/lib/sha1.c
@@ -0,0 +1,452 @@
+/*
+ *  Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *  based on:
+ *  FIPS-180-1 compliant SHA-1 implementation
+ *
+ *  Copyright (C) 2003-2006  Christophe Devine
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License, version 2.1 as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA  02110-1301  USA
+ */
+/*
+ *  The SHA-1 standard was published by NIST in 1993.
+ *
+ *  http://www.itl.nist.gov/fipspubs/fip180-1.htm
+ */
+
+#ifndef _CRT_SECURE_NO_DEPRECATE
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#ifndef USE_HOSTCC
+#include <common.h>
+#include <linux/string.h>
+#else
+#include <string.h>
+#endif /* USE_HOSTCC */
+#include <watchdog.h>
+#include "sha1.h"
+
+/*
+ * 32-bit integer manipulation macros (big endian)
+ */
+#ifndef GET_UINT32_BE
+#define GET_UINT32_BE(n,b,i) {				\
+	(n) = ( (unsigned long) (b)[(i)    ] << 24 )	\
+	    | ( (unsigned long) (b)[(i) + 1] << 16 )	\
+	    | ( (unsigned long) (b)[(i) + 2] <<  8 )	\
+	    | ( (unsigned long) (b)[(i) + 3]       );	\
+}
+#endif
+#ifndef PUT_UINT32_BE
+#define PUT_UINT32_BE(n,b,i) {				\
+	(b)[(i)    ] = (unsigned char) ( (n) >> 24 );	\
+	(b)[(i) + 1] = (unsigned char) ( (n) >> 16 );	\
+	(b)[(i) + 2] = (unsigned char) ( (n) >>  8 );	\
+	(b)[(i) + 3] = (unsigned char) ( (n)       );	\
+}
+#endif
+
+/*
+ * SHA-1 context setup
+ */
+void sha1_starts (sha1_context * ctx)
+{
+	ctx->total[0] = 0;
+	ctx->total[1] = 0;
+
+	ctx->state[0] = 0x67452301;
+	ctx->state[1] = 0xEFCDAB89;
+	ctx->state[2] = 0x98BADCFE;
+	ctx->state[3] = 0x10325476;
+	ctx->state[4] = 0xC3D2E1F0;
+}
+
+static void sha1_process (sha1_context * ctx, unsigned char data[64])
+{
+	unsigned long temp, W[16], A, B, C, D, E;
+
+	GET_UINT32_BE (W[0], data, 0);
+	GET_UINT32_BE (W[1], data, 4);
+	GET_UINT32_BE (W[2], data, 8);
+	GET_UINT32_BE (W[3], data, 12);
+	GET_UINT32_BE (W[4], data, 16);
+	GET_UINT32_BE (W[5], data, 20);
+	GET_UINT32_BE (W[6], data, 24);
+	GET_UINT32_BE (W[7], data, 28);
+	GET_UINT32_BE (W[8], data, 32);
+	GET_UINT32_BE (W[9], data, 36);
+	GET_UINT32_BE (W[10], data, 40);
+	GET_UINT32_BE (W[11], data, 44);
+	GET_UINT32_BE (W[12], data, 48);
+	GET_UINT32_BE (W[13], data, 52);
+	GET_UINT32_BE (W[14], data, 56);
+	GET_UINT32_BE (W[15], data, 60);
+
+#define S(x,n)	((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
+
+#define R(t) (						\
+	temp = W[(t -  3) & 0x0F] ^ W[(t - 8) & 0x0F] ^	\
+	       W[(t - 14) & 0x0F] ^ W[ t      & 0x0F],	\
+	( W[t & 0x0F] = S(temp,1) )			\
+)
+
+#define P(a,b,c,d,e,x)	{				\
+	e += S(a,5) + F(b,c,d) + K + x; b = S(b,30);	\
+}
+
+	A = ctx->state[0];
+	B = ctx->state[1];
+	C = ctx->state[2];
+	D = ctx->state[3];
+	E = ctx->state[4];
+
+#define F(x,y,z) (z ^ (x & (y ^ z)))
+#define K 0x5A827999
+
+	P (A, B, C, D, E, W[0]);
+	P (E, A, B, C, D, W[1]);
+	P (D, E, A, B, C, W[2]);
+	P (C, D, E, A, B, W[3]);
+	P (B, C, D, E, A, W[4]);
+	P (A, B, C, D, E, W[5]);
+	P (E, A, B, C, D, W[6]);
+	P (D, E, A, B, C, W[7]);
+	P (C, D, E, A, B, W[8]);
+	P (B, C, D, E, A, W[9]);
+	P (A, B, C, D, E, W[10]);
+	P (E, A, B, C, D, W[11]);
+	P (D, E, A, B, C, W[12]);
+	P (C, D, E, A, B, W[13]);
+	P (B, C, D, E, A, W[14]);
+	P (A, B, C, D, E, W[15]);
+	P (E, A, B, C, D, R (16));
+	P (D, E, A, B, C, R (17));
+	P (C, D, E, A, B, R (18));
+	P (B, C, D, E, A, R (19));
+
+#undef K
+#undef F
+
+#define F(x,y,z) (x ^ y ^ z)
+#define K 0x6ED9EBA1
+
+	P (A, B, C, D, E, R (20));
+	P (E, A, B, C, D, R (21));
+	P (D, E, A, B, C, R (22));
+	P (C, D, E, A, B, R (23));
+	P (B, C, D, E, A, R (24));
+	P (A, B, C, D, E, R (25));
+	P (E, A, B, C, D, R (26));
+	P (D, E, A, B, C, R (27));
+	P (C, D, E, A, B, R (28));
+	P (B, C, D, E, A, R (29));
+	P (A, B, C, D, E, R (30));
+	P (E, A, B, C, D, R (31));
+	P (D, E, A, B, C, R (32));
+	P (C, D, E, A, B, R (33));
+	P (B, C, D, E, A, R (34));
+	P (A, B, C, D, E, R (35));
+	P (E, A, B, C, D, R (36));
+	P (D, E, A, B, C, R (37));
+	P (C, D, E, A, B, R (38));
+	P (B, C, D, E, A, R (39));
+
+#undef K
+#undef F
+
+#define F(x,y,z) ((x & y) | (z & (x | y)))
+#define K 0x8F1BBCDC
+
+	P (A, B, C, D, E, R (40));
+	P (E, A, B, C, D, R (41));
+	P (D, E, A, B, C, R (42));
+	P (C, D, E, A, B, R (43));
+	P (B, C, D, E, A, R (44));
+	P (A, B, C, D, E, R (45));
+	P (E, A, B, C, D, R (46));
+	P (D, E, A, B, C, R (47));
+	P (C, D, E, A, B, R (48));
+	P (B, C, D, E, A, R (49));
+	P (A, B, C, D, E, R (50));
+	P (E, A, B, C, D, R (51));
+	P (D, E, A, B, C, R (52));
+	P (C, D, E, A, B, R (53));
+	P (B, C, D, E, A, R (54));
+	P (A, B, C, D, E, R (55));
+	P (E, A, B, C, D, R (56));
+	P (D, E, A, B, C, R (57));
+	P (C, D, E, A, B, R (58));
+	P (B, C, D, E, A, R (59));
+
+#undef K
+#undef F
+
+#define F(x,y,z) (x ^ y ^ z)
+#define K 0xCA62C1D6
+
+	P (A, B, C, D, E, R (60));
+	P (E, A, B, C, D, R (61));
+	P (D, E, A, B, C, R (62));
+	P (C, D, E, A, B, R (63));
+	P (B, C, D, E, A, R (64));
+	P (A, B, C, D, E, R (65));
+	P (E, A, B, C, D, R (66));
+	P (D, E, A, B, C, R (67));
+	P (C, D, E, A, B, R (68));
+	P (B, C, D, E, A, R (69));
+	P (A, B, C, D, E, R (70));
+	P (E, A, B, C, D, R (71));
+	P (D, E, A, B, C, R (72));
+	P (C, D, E, A, B, R (73));
+	P (B, C, D, E, A, R (74));
+	P (A, B, C, D, E, R (75));
+	P (E, A, B, C, D, R (76));
+	P (D, E, A, B, C, R (77));
+	P (C, D, E, A, B, R (78));
+	P (B, C, D, E, A, R (79));
+
+#undef K
+#undef F
+
+	ctx->state[0] += A;
+	ctx->state[1] += B;
+	ctx->state[2] += C;
+	ctx->state[3] += D;
+	ctx->state[4] += E;
+}
+
+/*
+ * SHA-1 process buffer
+ */
+void sha1_update (sha1_context * ctx, unsigned char *input, int ilen)
+{
+	int fill;
+	unsigned long left;
+
+	if (ilen <= 0)
+		return;
+
+	left = ctx->total[0] & 0x3F;
+	fill = 64 - left;
+
+	ctx->total[0] += ilen;
+	ctx->total[0] &= 0xFFFFFFFF;
+
+	if (ctx->total[0] < (unsigned long) ilen)
+		ctx->total[1]++;
+
+	if (left && ilen >= fill) {
+		memcpy ((void *) (ctx->buffer + left), (void *) input, fill);
+		sha1_process (ctx, ctx->buffer);
+		input += fill;
+		ilen -= fill;
+		left = 0;
+	}
+
+	while (ilen >= 64) {
+		sha1_process (ctx, input);
+		input += 64;
+		ilen -= 64;
+	}
+
+	if (ilen > 0) {
+		memcpy ((void *) (ctx->buffer + left), (void *) input, ilen);
+	}
+}
+
+static const unsigned char sha1_padding[64] = {
+	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/*
+ * SHA-1 final digest
+ */
+void sha1_finish (sha1_context * ctx, unsigned char output[20])
+{
+	unsigned long last, padn;
+	unsigned long high, low;
+	unsigned char msglen[8];
+
+	high = (ctx->total[0] >> 29)
+		| (ctx->total[1] << 3);
+	low = (ctx->total[0] << 3);
+
+	PUT_UINT32_BE (high, msglen, 0);
+	PUT_UINT32_BE (low, msglen, 4);
+
+	last = ctx->total[0] & 0x3F;
+	padn = (last < 56) ? (56 - last) : (120 - last);
+
+	sha1_update (ctx, (unsigned char *) sha1_padding, padn);
+	sha1_update (ctx, msglen, 8);
+
+	PUT_UINT32_BE (ctx->state[0], output, 0);
+	PUT_UINT32_BE (ctx->state[1], output, 4);
+	PUT_UINT32_BE (ctx->state[2], output, 8);
+	PUT_UINT32_BE (ctx->state[3], output, 12);
+	PUT_UINT32_BE (ctx->state[4], output, 16);
+}
+
+/*
+ * Output = SHA-1( input buffer )
+ */
+void sha1_csum (unsigned char *input, int ilen, unsigned char output[20])
+{
+	sha1_context ctx;
+
+	sha1_starts (&ctx);
+	sha1_update (&ctx, input, ilen);
+	sha1_finish (&ctx, output);
+}
+
+/*
+ * Output = SHA-1( input buffer ). Trigger the watchdog every 'chunk_sz'
+ * bytes of input processed.
+ */
+void sha1_csum_wd (unsigned char *input, int ilen, unsigned char output[20],
+			unsigned int chunk_sz)
+{
+	sha1_context ctx;
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+	unsigned char *end, *curr;
+	int chunk;
+#endif
+
+	sha1_starts (&ctx);
+
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+	curr = input;
+	end = input + ilen;
+	while (curr < end) {
+		chunk = end - curr;
+		if (chunk > chunk_sz)
+			chunk = chunk_sz;
+		sha1_update (&ctx, curr, chunk);
+		curr += chunk;
+		WATCHDOG_RESET ();
+	}
+#else
+	sha1_update (&ctx, input, ilen);
+#endif
+
+	sha1_finish (&ctx, output);
+}
+
+/*
+ * Output = HMAC-SHA-1( input buffer, hmac key )
+ */
+void sha1_hmac (unsigned char *key, int keylen,
+		unsigned char *input, int ilen, unsigned char output[20])
+{
+	int i;
+	sha1_context ctx;
+	unsigned char k_ipad[64];
+	unsigned char k_opad[64];
+	unsigned char tmpbuf[20];
+
+	memset (k_ipad, 0x36, 64);
+	memset (k_opad, 0x5C, 64);
+
+	for (i = 0; i < keylen; i++) {
+		if (i >= 64)
+			break;
+
+		k_ipad[i] ^= key[i];
+		k_opad[i] ^= key[i];
+	}
+
+	sha1_starts (&ctx);
+	sha1_update (&ctx, k_ipad, 64);
+	sha1_update (&ctx, input, ilen);
+	sha1_finish (&ctx, tmpbuf);
+
+	sha1_starts (&ctx);
+	sha1_update (&ctx, k_opad, 64);
+	sha1_update (&ctx, tmpbuf, 20);
+	sha1_finish (&ctx, output);
+
+	memset (k_ipad, 0, 64);
+	memset (k_opad, 0, 64);
+	memset (tmpbuf, 0, 20);
+	memset (&ctx, 0, sizeof (sha1_context));
+}
+
+static const char _sha1_src[] = "_sha1_src";
+
+#ifdef SELF_TEST
+/*
+ * FIPS-180-1 test vectors
+ */
+static const char sha1_test_str[3][57] = {
+	{"abc"},
+	{"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"},
+	{""}
+};
+
+static const unsigned char sha1_test_sum[3][20] = {
+	{0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E,
+	 0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D},
+	{0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE,
+	 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1},
+	{0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E,
+	 0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F}
+};
+
+/*
+ * Checkup routine
+ */
+int sha1_self_test (void)
+{
+	int i, j;
+	unsigned char buf[1000];
+	unsigned char sha1sum[20];
+	sha1_context ctx;
+
+	for (i = 0; i < 3; i++) {
+		printf ("  SHA-1 test #%d: ", i + 1);
+
+		sha1_starts (&ctx);
+
+		if (i < 2)
+			sha1_update (&ctx, (unsigned char *) sha1_test_str[i],
+				     strlen (sha1_test_str[i]));
+		else {
+			memset (buf, 'a', 1000);
+			for (j = 0; j < 1000; j++)
+				sha1_update (&ctx, buf, 1000);
+		}
+
+		sha1_finish (&ctx, sha1sum);
+
+		if (memcmp (sha1sum, sha1_test_sum[i], 20) != 0) {
+			printf ("failed\n");
+			return (1);
+		}
+
+		printf ("passed\n");
+	}
+
+	printf ("\n");
+	return (0);
+}
+#else
+int sha1_self_test (void)
+{
+	return (0);
+}
+#endif