1 files changed, 269 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/md2.c b/security/nss/lib/freebl/md2.c
new file mode 100644
index 0000000000..cb3d3d82bc
--- /dev/null
+++ b/security/nss/lib/freebl/md2.c
@@ -0,0 +1,269 @@
+/* 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);
+}