add ripemd-160 as authentication function.

1 files changed, 391 insertions, 0 deletions

diff --git a/sys/netinet/ip_rmd160.c b/sys/netinet/ip_rmd160.c
new file mode 100644
index 00000000000..dca3589e69c
--- /dev/null
+++ b/sys/netinet/ip_rmd160.c
@@ -0,0 +1,391 @@
+/********************************************************************\
+ *
+ *      FILE:     rmd160.c
+ *
+ *      CONTENTS: A sample C-implementation of the RIPEMD-160
+ *		  hash-function.
+ *      TARGET:   any computer with an ANSI C compiler
+ *
+ *      AUTHOR:   Antoon Bosselaers, ESAT-COSIC
+ *		  (Arranged for libc by Todd C. Miller)
+ *      DATE:     1 March 1996
+ *      VERSION:  1.0
+ *
+ *      Copyright (c) Katholieke Universiteit Leuven
+ *      1996, All Rights Reserved
+ *
+\********************************************************************/
+
+/*  header files */
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <netinet/ip_rmd160.h>
+
+/********************************************************************/
+
+/* macro definitions */
+
+/* collect four bytes into one word: */
+#define BYTES_TO_DWORD(strptr)			\
+    (((u_int32_t) *((strptr)+3) << 24) |	\
+    ((u_int32_t) *((strptr)+2) << 16) |		\
+    ((u_int32_t) *((strptr)+1) <<  8) |		\
+    ((u_int32_t) *(strptr)))
+
+/* ROL(x, n) cyclically rotates x over n bits to the left */
+/* x must be of an unsigned 32 bits type and 0 <= n < 32. */
+#define ROL(x, n)	(((x) << (n)) | ((x) >> (32-(n))))
+
+/* the three basic functions F(), G() and H() */
+#define F(x, y, z)	((x) ^ (y) ^ (z))
+#define G(x, y, z)	(((x) & (y)) | (~(x) & (z)))
+#define H(x, y, z)	(((x) | ~(y)) ^ (z))
+#define I(x, y, z)	(((x) & (z)) | ((y) & ~(z)))
+#define J(x, y, z)	((x) ^ ((y) | ~(z)))
+
+/* the eight basic operations FF() through III() */
+#define FF(a, b, c, d, e, x, s)	{			\
+      (a) += F((b), (c), (d)) + (x);			\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define GG(a, b, c, d, e, x, s)	{			\
+      (a) += G((b), (c), (d)) + (x) + 0x5a827999U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define HH(a, b, c, d, e, x, s)	{			\
+      (a) += H((b), (c), (d)) + (x) + 0x6ed9eba1U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define II(a, b, c, d, e, x, s)	{			\
+      (a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcU;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define JJ(a, b, c, d, e, x, s)	{			\
+      (a) += J((b), (c), (d)) + (x) + 0xa953fd4eU;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define FFF(a, b, c, d, e, x, s)	{		\
+      (a) += F((b), (c), (d)) + (x);			\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define GGG(a, b, c, d, e, x, s)	{		\
+      (a) += G((b), (c), (d)) + (x) + 0x7a6d76e9U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define HHH(a, b, c, d, e, x, s)	{		\
+      (a) += H((b), (c), (d)) + (x) + 0x6d703ef3U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define III(a, b, c, d, e, x, s)	{		\
+      (a) += I((b), (c), (d)) + (x) + 0x5c4dd124U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+#define JJJ(a, b, c, d, e, x, s)	{		\
+      (a) += J((b), (c), (d)) + (x) + 0x50a28be6U;	\
+      (a) = ROL((a), (s)) + (e);			\
+      (c) = ROL((c), 10);				\
+}
+
+/********************************************************************/
+
+void RMD160Init(context)
+	RMD160_CTX *context;
+{
+
+	/* ripemd-160 initialization constants */
+	context->state[0] = 0x67452301U;
+	context->state[1] = 0xefcdab89U;
+	context->state[2] = 0x98badcfeU;
+	context->state[3] = 0x10325476U;
+	context->state[4] = 0xc3d2e1f0U;
+	context->length[0] = context->length[1] = 0;
+}
+
+/********************************************************************/
+
+void RMD160Transform(state, block)
+	u_int32_t state[5];
+	const u_int32_t block[16];
+{
+	u_int32_t aa = state[0],  bb = state[1],  cc = state[2],
+	    dd = state[3],  ee = state[4];
+	u_int32_t aaa = state[0], bbb = state[1], ccc = state[2],
+	    ddd = state[3], eee = state[4];
+
+	/* round 1 */
+	FF(aa, bb, cc, dd, ee, block[ 0], 11);
+	FF(ee, aa, bb, cc, dd, block[ 1], 14);
+	FF(dd, ee, aa, bb, cc, block[ 2], 15);
+	FF(cc, dd, ee, aa, bb, block[ 3], 12);
+	FF(bb, cc, dd, ee, aa, block[ 4],  5);
+	FF(aa, bb, cc, dd, ee, block[ 5],  8);
+	FF(ee, aa, bb, cc, dd, block[ 6],  7);
+	FF(dd, ee, aa, bb, cc, block[ 7],  9);
+	FF(cc, dd, ee, aa, bb, block[ 8], 11);
+	FF(bb, cc, dd, ee, aa, block[ 9], 13);
+	FF(aa, bb, cc, dd, ee, block[10], 14);
+	FF(ee, aa, bb, cc, dd, block[11], 15);
+	FF(dd, ee, aa, bb, cc, block[12],  6);
+	FF(cc, dd, ee, aa, bb, block[13],  7);
+	FF(bb, cc, dd, ee, aa, block[14],  9);
+	FF(aa, bb, cc, dd, ee, block[15],  8);
+
+	/* round 2 */
+	GG(ee, aa, bb, cc, dd, block[ 7],  7);
+	GG(dd, ee, aa, bb, cc, block[ 4],  6);
+	GG(cc, dd, ee, aa, bb, block[13],  8);
+	GG(bb, cc, dd, ee, aa, block[ 1], 13);
+	GG(aa, bb, cc, dd, ee, block[10], 11);
+	GG(ee, aa, bb, cc, dd, block[ 6],  9);
+	GG(dd, ee, aa, bb, cc, block[15],  7);
+	GG(cc, dd, ee, aa, bb, block[ 3], 15);
+	GG(bb, cc, dd, ee, aa, block[12],  7);
+	GG(aa, bb, cc, dd, ee, block[ 0], 12);
+	GG(ee, aa, bb, cc, dd, block[ 9], 15);
+	GG(dd, ee, aa, bb, cc, block[ 5],  9);
+	GG(cc, dd, ee, aa, bb, block[ 2], 11);
+	GG(bb, cc, dd, ee, aa, block[14],  7);
+	GG(aa, bb, cc, dd, ee, block[11], 13);
+	GG(ee, aa, bb, cc, dd, block[ 8], 12);
+
+	/* round 3 */
+	HH(dd, ee, aa, bb, cc, block[ 3], 11);
+	HH(cc, dd, ee, aa, bb, block[10], 13);
+	HH(bb, cc, dd, ee, aa, block[14],  6);
+	HH(aa, bb, cc, dd, ee, block[ 4],  7);
+	HH(ee, aa, bb, cc, dd, block[ 9], 14);
+	HH(dd, ee, aa, bb, cc, block[15],  9);
+	HH(cc, dd, ee, aa, bb, block[ 8], 13);
+	HH(bb, cc, dd, ee, aa, block[ 1], 15);
+	HH(aa, bb, cc, dd, ee, block[ 2], 14);
+	HH(ee, aa, bb, cc, dd, block[ 7],  8);
+	HH(dd, ee, aa, bb, cc, block[ 0], 13);
+	HH(cc, dd, ee, aa, bb, block[ 6],  6);
+	HH(bb, cc, dd, ee, aa, block[13],  5);
+	HH(aa, bb, cc, dd, ee, block[11], 12);
+	HH(ee, aa, bb, cc, dd, block[ 5],  7);
+	HH(dd, ee, aa, bb, cc, block[12],  5);
+
+	/* round 4 */
+	II(cc, dd, ee, aa, bb, block[ 1], 11);
+	II(bb, cc, dd, ee, aa, block[ 9], 12);
+	II(aa, bb, cc, dd, ee, block[11], 14);
+	II(ee, aa, bb, cc, dd, block[10], 15);
+	II(dd, ee, aa, bb, cc, block[ 0], 14);
+	II(cc, dd, ee, aa, bb, block[ 8], 15);
+	II(bb, cc, dd, ee, aa, block[12],  9);
+	II(aa, bb, cc, dd, ee, block[ 4],  8);
+	II(ee, aa, bb, cc, dd, block[13],  9);
+	II(dd, ee, aa, bb, cc, block[ 3], 14);
+	II(cc, dd, ee, aa, bb, block[ 7],  5);
+	II(bb, cc, dd, ee, aa, block[15],  6);
+	II(aa, bb, cc, dd, ee, block[14],  8);
+	II(ee, aa, bb, cc, dd, block[ 5],  6);
+	II(dd, ee, aa, bb, cc, block[ 6],  5);
+	II(cc, dd, ee, aa, bb, block[ 2], 12);
+
+	/* round 5 */
+	JJ(bb, cc, dd, ee, aa, block[ 4],  9);
+	JJ(aa, bb, cc, dd, ee, block[ 0], 15);
+	JJ(ee, aa, bb, cc, dd, block[ 5],  5);
+	JJ(dd, ee, aa, bb, cc, block[ 9], 11);
+	JJ(cc, dd, ee, aa, bb, block[ 7],  6);
+	JJ(bb, cc, dd, ee, aa, block[12],  8);
+	JJ(aa, bb, cc, dd, ee, block[ 2], 13);
+	JJ(ee, aa, bb, cc, dd, block[10], 12);
+	JJ(dd, ee, aa, bb, cc, block[14],  5);
+	JJ(cc, dd, ee, aa, bb, block[ 1], 12);
+	JJ(bb, cc, dd, ee, aa, block[ 3], 13);
+	JJ(aa, bb, cc, dd, ee, block[ 8], 14);
+	JJ(ee, aa, bb, cc, dd, block[11], 11);
+	JJ(dd, ee, aa, bb, cc, block[ 6],  8);
+	JJ(cc, dd, ee, aa, bb, block[15],  5);
+	JJ(bb, cc, dd, ee, aa, block[13],  6);
+
+	/* parallel round 1 */
+	JJJ(aaa, bbb, ccc, ddd, eee, block[ 5],  8);
+	JJJ(eee, aaa, bbb, ccc, ddd, block[14],  9);
+	JJJ(ddd, eee, aaa, bbb, ccc, block[ 7],  9);
+	JJJ(ccc, ddd, eee, aaa, bbb, block[ 0], 11);
+	JJJ(bbb, ccc, ddd, eee, aaa, block[ 9], 13);
+	JJJ(aaa, bbb, ccc, ddd, eee, block[ 2], 15);
+	JJJ(eee, aaa, bbb, ccc, ddd, block[11], 15);
+	JJJ(ddd, eee, aaa, bbb, ccc, block[ 4],  5);
+	JJJ(ccc, ddd, eee, aaa, bbb, block[13],  7);
+	JJJ(bbb, ccc, ddd, eee, aaa, block[ 6],  7);
+	JJJ(aaa, bbb, ccc, ddd, eee, block[15],  8);
+	JJJ(eee, aaa, bbb, ccc, ddd, block[ 8], 11);
+	JJJ(ddd, eee, aaa, bbb, ccc, block[ 1], 14);
+	JJJ(ccc, ddd, eee, aaa, bbb, block[10], 14);
+	JJJ(bbb, ccc, ddd, eee, aaa, block[ 3], 12);
+	JJJ(aaa, bbb, ccc, ddd, eee, block[12],  6);
+
+	/* parallel round 2 */
+	III(eee, aaa, bbb, ccc, ddd, block[ 6],  9);
+	III(ddd, eee, aaa, bbb, ccc, block[11], 13);
+	III(ccc, ddd, eee, aaa, bbb, block[ 3], 15);
+	III(bbb, ccc, ddd, eee, aaa, block[ 7],  7);
+	III(aaa, bbb, ccc, ddd, eee, block[ 0], 12);
+	III(eee, aaa, bbb, ccc, ddd, block[13],  8);
+	III(ddd, eee, aaa, bbb, ccc, block[ 5],  9);
+	III(ccc, ddd, eee, aaa, bbb, block[10], 11);
+	III(bbb, ccc, ddd, eee, aaa, block[14],  7);
+	III(aaa, bbb, ccc, ddd, eee, block[15],  7);
+	III(eee, aaa, bbb, ccc, ddd, block[ 8], 12);
+	III(ddd, eee, aaa, bbb, ccc, block[12],  7);
+	III(ccc, ddd, eee, aaa, bbb, block[ 4],  6);
+	III(bbb, ccc, ddd, eee, aaa, block[ 9], 15);
+	III(aaa, bbb, ccc, ddd, eee, block[ 1], 13);
+	III(eee, aaa, bbb, ccc, ddd, block[ 2], 11);
+
+	/* parallel round 3 */
+	HHH(ddd, eee, aaa, bbb, ccc, block[15],  9);
+	HHH(ccc, ddd, eee, aaa, bbb, block[ 5],  7);
+	HHH(bbb, ccc, ddd, eee, aaa, block[ 1], 15);
+	HHH(aaa, bbb, ccc, ddd, eee, block[ 3], 11);
+	HHH(eee, aaa, bbb, ccc, ddd, block[ 7],  8);
+	HHH(ddd, eee, aaa, bbb, ccc, block[14],  6);
+	HHH(ccc, ddd, eee, aaa, bbb, block[ 6],  6);
+	HHH(bbb, ccc, ddd, eee, aaa, block[ 9], 14);
+	HHH(aaa, bbb, ccc, ddd, eee, block[11], 12);
+	HHH(eee, aaa, bbb, ccc, ddd, block[ 8], 13);
+	HHH(ddd, eee, aaa, bbb, ccc, block[12],  5);
+	HHH(ccc, ddd, eee, aaa, bbb, block[ 2], 14);
+	HHH(bbb, ccc, ddd, eee, aaa, block[10], 13);
+	HHH(aaa, bbb, ccc, ddd, eee, block[ 0], 13);
+	HHH(eee, aaa, bbb, ccc, ddd, block[ 4],  7);
+	HHH(ddd, eee, aaa, bbb, ccc, block[13],  5);
+
+	/* parallel round 4 */
+	GGG(ccc, ddd, eee, aaa, bbb, block[ 8], 15);
+	GGG(bbb, ccc, ddd, eee, aaa, block[ 6],  5);
+	GGG(aaa, bbb, ccc, ddd, eee, block[ 4],  8);
+	GGG(eee, aaa, bbb, ccc, ddd, block[ 1], 11);
+	GGG(ddd, eee, aaa, bbb, ccc, block[ 3], 14);
+	GGG(ccc, ddd, eee, aaa, bbb, block[11], 14);
+	GGG(bbb, ccc, ddd, eee, aaa, block[15],  6);
+	GGG(aaa, bbb, ccc, ddd, eee, block[ 0], 14);
+	GGG(eee, aaa, bbb, ccc, ddd, block[ 5],  6);
+	GGG(ddd, eee, aaa, bbb, ccc, block[12],  9);
+	GGG(ccc, ddd, eee, aaa, bbb, block[ 2], 12);
+	GGG(bbb, ccc, ddd, eee, aaa, block[13],  9);
+	GGG(aaa, bbb, ccc, ddd, eee, block[ 9], 12);
+	GGG(eee, aaa, bbb, ccc, ddd, block[ 7],  5);
+	GGG(ddd, eee, aaa, bbb, ccc, block[10], 15);
+	GGG(ccc, ddd, eee, aaa, bbb, block[14],  8);
+
+	/* parallel round 5 */
+	FFF(bbb, ccc, ddd, eee, aaa, block[12] ,  8);
+	FFF(aaa, bbb, ccc, ddd, eee, block[15] ,  5);
+	FFF(eee, aaa, bbb, ccc, ddd, block[10] , 12);
+	FFF(ddd, eee, aaa, bbb, ccc, block[ 4] ,  9);
+	FFF(ccc, ddd, eee, aaa, bbb, block[ 1] , 12);
+	FFF(bbb, ccc, ddd, eee, aaa, block[ 5] ,  5);
+	FFF(aaa, bbb, ccc, ddd, eee, block[ 8] , 14);
+	FFF(eee, aaa, bbb, ccc, ddd, block[ 7] ,  6);
+	FFF(ddd, eee, aaa, bbb, ccc, block[ 6] ,  8);
+	FFF(ccc, ddd, eee, aaa, bbb, block[ 2] , 13);
+	FFF(bbb, ccc, ddd, eee, aaa, block[13] ,  6);
+	FFF(aaa, bbb, ccc, ddd, eee, block[14] ,  5);
+	FFF(eee, aaa, bbb, ccc, ddd, block[ 0] , 15);
+	FFF(ddd, eee, aaa, bbb, ccc, block[ 3] , 13);
+	FFF(ccc, ddd, eee, aaa, bbb, block[ 9] , 11);
+	FFF(bbb, ccc, ddd, eee, aaa, block[11] , 11);
+
+	/* combine results */
+	ddd += cc + state[1];		/* final result for state[0] */
+	state[1] = state[2] + dd + eee;
+	state[2] = state[3] + ee + aaa;
+	state[3] = state[4] + aa + bbb;
+	state[4] = state[0] + bb + ccc;
+	state[0] = ddd;
+}
+
+/********************************************************************/
+
+void RMD160Update(context, data, nbytes)
+	RMD160_CTX *context;
+	const u_char *data;
+	u_int32_t nbytes;
+{
+	u_int32_t X[16];
+	u_int32_t i;
+#if BYTE_ORDER != LITTLE_ENDIAN
+	u_int32_t j;
+#endif
+	bzero(X, sizeof(X));
+
+	/* process all complete blocks */
+	for (i = 0; i < (nbytes >> 6); i++) {
+#if BYTE_ORDER == LITTLE_ENDIAN
+		bcopy(data, X, sizeof(X));
+#else
+		for (j=0; j < 16; j++)
+			X[j] = BYTES_TO_DWORD(data + (64 * i) + (4 * j));
+#endif
+		RMD160Transform(context->state, X);
+	}
+
+	/* update length[] */
+	if (context->length[0] + nbytes < context->length[0])
+		context->length[1]++;		/* overflow to msb of length */
+	context->length[0] += nbytes;
+
+	/*
+	 * Put bytes from data into context's buffer
+	 */
+	bzero(context->buffer, 16 * sizeof(u_int32_t));
+	/* extract bytes 6 to 10 inclusive */
+	data += (context->length[0] & 0x3C0);
+	for (i = 0; i < (context->length[0] & 63); i++) {
+		/* byte i goes into word buffer[i div 4] at pos.  8*(i mod 4) */
+		context->buffer[i>>2] ^= (u_int32_t) *data++ << (8 * (i & 3));
+	}
+}
+
+/********************************************************************/
+
+void RMD160Final(digest, context)
+	u_char digest[20];
+	RMD160_CTX *context;
+{
+	u_int32_t i;
+
+	/* append the bit m_n == 1 */
+	context->buffer[(context->length[0] >> 2) & 15] ^=
+	    1U << (8 * (context->length[0] & 3) + 7);
+
+	if ((context->length[0] & 63) > 55) {
+		/* length goes to next block */
+		RMD160Transform(context->state, context->buffer);
+		bzero(context->buffer, 16 * sizeof(u_int32_t));
+	}
+
+	/* append length in bits */
+	context->buffer[14] = context->length[0] << 3;
+	context->buffer[15] = (context->length[0] >> 29) |
+	    (context->length[1] << 3);
+	RMD160Transform(context->state, context->buffer);
+
+	if (digest != NULL) {
+		for (i = 0; i < 20; i += 4) {
+			/* extracts the 8 least significant bits. */
+			digest[i]     =  context->state[i>>2];
+			digest[i + 1] = (context->state[i>>2] >>  8);
+			digest[i + 2] = (context->state[i>>2] >> 16);
+			digest[i + 3] = (context->state[i>>2] >> 24);
+		}
+	}
+}
+
+/************************ end of file rmd160.c **********************/