--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nss/lib/freebl/md2.c	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,268 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+
+#include "prerr.h"
+#include "secerr.h"
+
+#include "prtypes.h"
+
+#include "blapi.h"
+
+#define MD2_DIGEST_LEN    16
+#define MD2_BUFSIZE       16
+#define MD2_X_SIZE        48  /* The X array, [CV | INPUT | TMP VARS] */
+#define MD2_CV             0  /* index into X for chaining variables */
+#define MD2_INPUT         16  /* index into X for input */
+#define MD2_TMPVARS       32  /* index into X for temporary variables */
+#define MD2_CHECKSUM_SIZE 16
+
+struct MD2ContextStr {
+	unsigned char checksum[MD2_BUFSIZE];
+	unsigned char X[MD2_X_SIZE];
+	PRUint8 unusedBuffer;
+};
+
+static const PRUint8 MD2S[256] = {
+ 0051, 0056, 0103, 0311, 0242, 0330, 0174, 0001,
+ 0075, 0066, 0124, 0241, 0354, 0360, 0006, 0023,
+ 0142, 0247, 0005, 0363, 0300, 0307, 0163, 0214,
+ 0230, 0223, 0053, 0331, 0274, 0114, 0202, 0312,
+ 0036, 0233, 0127, 0074, 0375, 0324, 0340, 0026,
+ 0147, 0102, 0157, 0030, 0212, 0027, 0345, 0022,
+ 0276, 0116, 0304, 0326, 0332, 0236, 0336, 0111,
+ 0240, 0373, 0365, 0216, 0273, 0057, 0356, 0172,
+ 0251, 0150, 0171, 0221, 0025, 0262, 0007, 0077,
+ 0224, 0302, 0020, 0211, 0013, 0042, 0137, 0041,
+ 0200, 0177, 0135, 0232, 0132, 0220, 0062, 0047,
+ 0065, 0076, 0314, 0347, 0277, 0367, 0227, 0003,
+ 0377, 0031, 0060, 0263, 0110, 0245, 0265, 0321,
+ 0327, 0136, 0222, 0052, 0254, 0126, 0252, 0306,
+ 0117, 0270, 0070, 0322, 0226, 0244, 0175, 0266,
+ 0166, 0374, 0153, 0342, 0234, 0164, 0004, 0361,
+ 0105, 0235, 0160, 0131, 0144, 0161, 0207, 0040,
+ 0206, 0133, 0317, 0145, 0346, 0055, 0250, 0002,
+ 0033, 0140, 0045, 0255, 0256, 0260, 0271, 0366,
+ 0034, 0106, 0141, 0151, 0064, 0100, 0176, 0017,
+ 0125, 0107, 0243, 0043, 0335, 0121, 0257, 0072,
+ 0303, 0134, 0371, 0316, 0272, 0305, 0352, 0046,
+ 0054, 0123, 0015, 0156, 0205, 0050, 0204, 0011,
+ 0323, 0337, 0315, 0364, 0101, 0201, 0115, 0122,
+ 0152, 0334, 0067, 0310, 0154, 0301, 0253, 0372,
+ 0044, 0341, 0173, 0010, 0014, 0275, 0261, 0112,
+ 0170, 0210, 0225, 0213, 0343, 0143, 0350, 0155,
+ 0351, 0313, 0325, 0376, 0073, 0000, 0035, 0071,
+ 0362, 0357, 0267, 0016, 0146, 0130, 0320, 0344,
+ 0246, 0167, 0162, 0370, 0353, 0165, 0113, 0012,
+ 0061, 0104, 0120, 0264, 0217, 0355, 0037, 0032,
+ 0333, 0231, 0215, 0063, 0237, 0021, 0203, 0024
+};
+
+SECStatus 
+MD2_Hash(unsigned char *dest, const char *src)
+{
+	unsigned int len;
+	MD2Context *cx = MD2_NewContext();
+	if (!cx) {
+		PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
+		return SECFailure;
+	}
+	MD2_Begin(cx);
+	MD2_Update(cx, (const unsigned char *)src, PORT_Strlen(src));
+	MD2_End(cx, dest, &len, MD2_DIGEST_LEN);
+	MD2_DestroyContext(cx, PR_TRUE);
+	return SECSuccess;
+}
+
+MD2Context *
+MD2_NewContext(void)
+{
+	MD2Context *cx = (MD2Context *)PORT_ZAlloc(sizeof(MD2Context));
+	if (cx == NULL) {
+		PORT_SetError(PR_OUT_OF_MEMORY_ERROR);
+		return NULL;
+	}
+	return cx;
+}
+
+void 
+MD2_DestroyContext(MD2Context *cx, PRBool freeit)
+{
+	if (freeit)
+		PORT_ZFree(cx, sizeof(*cx));
+}
+
+void 
+MD2_Begin(MD2Context *cx)
+{
+	memset(cx, 0, sizeof(*cx));
+	cx->unusedBuffer = MD2_BUFSIZE;
+}
+
+static void
+md2_compress(MD2Context *cx)
+{
+	int j;
+	unsigned char P;
+	P = cx->checksum[MD2_CHECKSUM_SIZE-1];
+	/* Compute the running checksum, and set the tmp variables to be 
+	 * CV[i] XOR input[i] 
+	 */
+#define CKSUMFN(n) \
+	P = cx->checksum[n] ^ MD2S[cx->X[MD2_INPUT+n] ^ P]; \
+	cx->checksum[n] = P; \
+	cx->X[MD2_TMPVARS+n] = cx->X[n] ^ cx->X[MD2_INPUT+n];
+	CKSUMFN(0);
+	CKSUMFN(1);
+	CKSUMFN(2);
+	CKSUMFN(3);
+	CKSUMFN(4);
+	CKSUMFN(5);
+	CKSUMFN(6);
+	CKSUMFN(7);
+	CKSUMFN(8);
+	CKSUMFN(9);
+	CKSUMFN(10);
+	CKSUMFN(11);
+	CKSUMFN(12);
+	CKSUMFN(13);
+	CKSUMFN(14);
+	CKSUMFN(15);
+	/* The compression function. */
+#define COMPRESS(n) \
+	P = cx->X[n] ^ MD2S[P]; \
+	cx->X[n] = P;
+	P = 0x00;
+	for (j=0; j<18; j++) {
+		COMPRESS(0);
+		COMPRESS(1);
+		COMPRESS(2);
+		COMPRESS(3);
+		COMPRESS(4);
+		COMPRESS(5);
+		COMPRESS(6);
+		COMPRESS(7);
+		COMPRESS(8);
+		COMPRESS(9);
+		COMPRESS(10);
+		COMPRESS(11);
+		COMPRESS(12);
+		COMPRESS(13);
+		COMPRESS(14);
+		COMPRESS(15);
+		COMPRESS(16);
+		COMPRESS(17);
+		COMPRESS(18);
+		COMPRESS(19);
+		COMPRESS(20);
+		COMPRESS(21);
+		COMPRESS(22);
+		COMPRESS(23);
+		COMPRESS(24);
+		COMPRESS(25);
+		COMPRESS(26);
+		COMPRESS(27);
+		COMPRESS(28);
+		COMPRESS(29);
+		COMPRESS(30);
+		COMPRESS(31);
+		COMPRESS(32);
+		COMPRESS(33);
+		COMPRESS(34);
+		COMPRESS(35);
+		COMPRESS(36);
+		COMPRESS(37);
+		COMPRESS(38);
+		COMPRESS(39);
+		COMPRESS(40);
+		COMPRESS(41);
+		COMPRESS(42);
+		COMPRESS(43);
+		COMPRESS(44);
+		COMPRESS(45);
+		COMPRESS(46);
+		COMPRESS(47);
+		P = (P + j) % 256;
+	}
+	cx->unusedBuffer = MD2_BUFSIZE;
+}
+
+void 
+MD2_Update(MD2Context *cx, const unsigned char *input, unsigned int inputLen)
+{
+	PRUint32 bytesToConsume;
+	
+	/* Fill the remaining input buffer. */
+	if (cx->unusedBuffer != MD2_BUFSIZE) {
+		bytesToConsume = PR_MIN(inputLen, cx->unusedBuffer);
+		memcpy(&cx->X[MD2_INPUT + (MD2_BUFSIZE - cx->unusedBuffer)],
+		            input, bytesToConsume);
+		if (cx->unusedBuffer + bytesToConsume >= MD2_BUFSIZE)
+			md2_compress(cx);
+		inputLen -= bytesToConsume;
+		input += bytesToConsume;
+	}
+
+	/* Iterate over 16-byte chunks of the input. */
+	while (inputLen >= MD2_BUFSIZE) {
+		memcpy(&cx->X[MD2_INPUT], input, MD2_BUFSIZE);
+		md2_compress(cx);
+		inputLen -= MD2_BUFSIZE;
+		input += MD2_BUFSIZE;
+	}
+
+	/* Copy any input that remains into the buffer. */
+	if (inputLen)
+		memcpy(&cx->X[MD2_INPUT], input, inputLen);
+	cx->unusedBuffer = MD2_BUFSIZE - inputLen;
+}
+
+void 
+MD2_End(MD2Context *cx, unsigned char *digest,
+        unsigned int *digestLen, unsigned int maxDigestLen)
+{
+	PRUint8 padStart;
+	if (maxDigestLen < MD2_BUFSIZE) {
+		PORT_SetError(SEC_ERROR_INVALID_ARGS);
+		return;
+	}
+	padStart = MD2_BUFSIZE - cx->unusedBuffer;
+	memset(&cx->X[MD2_INPUT + padStart], cx->unusedBuffer, 
+	            cx->unusedBuffer);
+	md2_compress(cx);
+	memcpy(&cx->X[MD2_INPUT], cx->checksum, MD2_BUFSIZE);
+	md2_compress(cx);
+	*digestLen = MD2_DIGEST_LEN;
+	memcpy(digest, &cx->X[MD2_CV], MD2_DIGEST_LEN);
+}
+
+unsigned int 
+MD2_FlattenSize(MD2Context *cx)
+{
+	return sizeof(*cx);
+}
+
+SECStatus 
+MD2_Flatten(MD2Context *cx, unsigned char *space)
+{
+	memcpy(space, cx, sizeof(*cx));
+	return SECSuccess;
+}
+
+MD2Context * 
+MD2_Resurrect(unsigned char *space, void *arg)
+{
+	MD2Context *cx = MD2_NewContext();
+	if (cx)
+		memcpy(cx, space, sizeof(*cx));
+	return cx;
+}
+
+void MD2_Clone(MD2Context *dest, MD2Context *src) 
+{
+	memcpy(dest, src, sizeof *dest);
+}