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diff src/md5/md5c.c @ 10:26e34ae9a3e3

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changed indention and line wrapping to a more consistent style
author meillo@marmaro.de
date Mon, 27 Oct 2008 16:23:10 +0100
parents 08114f7dcc23
children
line wrap: on
line diff
--- a/src/md5/md5c.c	Mon Oct 27 16:21:27 2008 +0100
+++ b/src/md5/md5c.c	Mon Oct 27 16:23:10 2008 +0100
@@ -45,18 +45,16 @@
 #define S43 15
 #define S44 21
 
-static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
-static void Encode PROTO_LIST
-  ((unsigned char *, UINT4 *, unsigned int));
-static void Decode PROTO_LIST
-  ((UINT4 *, unsigned char *, unsigned int));
-static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
-static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
+static void MD5Transform PROTO_LIST((UINT4[4], unsigned char[64]));
+static void Encode PROTO_LIST((unsigned char *, UINT4 *, unsigned int));
+static void Decode PROTO_LIST((UINT4 *, unsigned char *, unsigned int));
+static void MD5_memcpy PROTO_LIST((POINTER, POINTER, unsigned int));
+static void MD5_memset PROTO_LIST((POINTER, int, unsigned int));
 
 static unsigned char 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
+	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
 };
 
 /* F, G, H and I are basic MD5 functions.
@@ -96,239 +94,239 @@
 
 /* MD5 initialization. Begins an MD5 operation, writing a new context.
  */
-void MD5Init (context)
-MD5_CTX *context;                                        /* context */
+void
+MD5Init(context)
+MD5_CTX *context;  /* context */
 {
-  context->count[0] = context->count[1] = 0;
-  /* Load magic initialization constants.
-*/
-  context->state[0] = 0x67452301;
-  context->state[1] = 0xefcdab89;
-  context->state[2] = 0x98badcfe;
-  context->state[3] = 0x10325476;
+	context->count[0] = context->count[1] = 0;
+	/* Load magic initialization constants. */
+	context->state[0] = 0x67452301;
+	context->state[1] = 0xefcdab89;
+	context->state[2] = 0x98badcfe;
+	context->state[3] = 0x10325476;
 }
 
 /* MD5 block update operation. Continues an MD5 message-digest
   operation, processing another message block, and updating the
   context.
  */
-void MD5Update (context, input, inputLen)
-MD5_CTX *context;                                        /* context */
-unsigned char *input;                                /* input block */
-unsigned int inputLen;                     /* length of input block */
+void
+MD5Update(context, input, inputLen)
+MD5_CTX *context;  /* context */
+unsigned char *input;  /* input block */
+unsigned int inputLen;  /* length of input block */
 {
-  unsigned int i, index, partLen;
+	unsigned int i, index, partLen;
 
-  /* Compute number of bytes mod 64 */
-  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
+	/* Compute number of bytes mod 64 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
 
-  /* Update number of bits */
-  if ((context->count[0] += ((UINT4)inputLen << 3))
-   < ((UINT4)inputLen << 3))
- context->count[1]++;
-  context->count[1] += ((UINT4)inputLen >> 29);
-
-  partLen = 64 - index;
+	/* Update number of bits */
+	if ((context->count[0] += ((UINT4) inputLen << 3)) < ((UINT4) inputLen << 3))
+		context->count[1]++;
+	context->count[1] += ((UINT4) inputLen >> 29);
 
-  /* Transform as many times as possible.
-*/
-  if (inputLen >= partLen) {
- MD5_memcpy
-   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
- MD5Transform (context->state, context->buffer);
+	partLen = 64 - index;
 
- for (i = partLen; i + 63 < inputLen; i += 64)
-   MD5Transform (context->state, &input[i]);
+	/* Transform as many times as possible.
+	 */
+	if (inputLen >= partLen) {
+		MD5_memcpy((POINTER) & context->buffer[index], (POINTER) input, partLen);
+		MD5Transform(context->state, context->buffer);
 
- index = 0;
-  }
-  else
- i = 0;
+		for (i = partLen; i + 63 < inputLen; i += 64)
+			MD5Transform(context->state, &input[i]);
 
-  /* Buffer remaining input */
-  MD5_memcpy
- ((POINTER)&context->buffer[index], (POINTER)&input[i],
-  inputLen-i);
+		index = 0;
+	} else
+		i = 0;
+
+	/* Buffer remaining input */
+	MD5_memcpy((POINTER) & context->buffer[index], (POINTER) & input[i], inputLen - i);
 }
 
 /* MD5 finalization. Ends an MD5 message-digest operation, writing the
   the message digest and zeroizing the context.
  */
-void MD5Final (digest, context)
-unsigned char digest[16];                         /* message digest */
-MD5_CTX *context;                                       /* context */
+void
+MD5Final(digest, context)
+unsigned char digest[16];  /* message digest */
+MD5_CTX *context;  /* context */
 {
-  unsigned char bits[8];
-  unsigned int index, padLen;
+	unsigned char bits[8];
+	unsigned int index, padLen;
 
-  /* Save number of bits */
-  Encode (bits, context->count, 8);
+	/* Save number of bits */
+	Encode(bits, context->count, 8);
 
-  /* Pad out to 56 mod 64.
-*/
-  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
-  padLen = (index < 56) ? (56 - index) : (120 - index);
-  MD5Update (context, PADDING, padLen);
+	/* Pad out to 56 mod 64.
+	 */
+	index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
+	padLen = (index < 56) ? (56 - index) : (120 - index);
+	MD5Update(context, PADDING, padLen);
 
-  /* Append length (before padding) */
-  MD5Update (context, bits, 8);
+	/* Append length (before padding) */
+	MD5Update(context, bits, 8);
 
-  /* Store state in digest */
-  Encode (digest, context->state, 16);
+	/* Store state in digest */
+	Encode(digest, context->state, 16);
 
-  /* Zeroize sensitive information.
-*/
-  MD5_memset ((POINTER)context, 0, sizeof (*context));
+	/* Zeroize sensitive information.
+	 */
+	MD5_memset((POINTER) context, 0, sizeof(*context));
 }
 
 /* MD5 basic transformation. Transforms state based on block.
  */
-static void MD5Transform (state, block)
+static void
+MD5Transform(state, block)
 UINT4 state[4];
 unsigned char block[64];
 {
-  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+	UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
 
-  Decode (x, block, 64);
+	Decode(x, block, 64);
 
-  /* Round 1 */
-  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
-  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
-  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
-  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
-  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
-  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
-  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
-  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
-  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
-  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
-  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
-  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
-  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
-  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
-  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
-  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
+	/* Round 1 */
+	FF(a, b, c, d, x[0], S11, 0xd76aa478);  /* 1 */
+	FF(d, a, b, c, x[1], S12, 0xe8c7b756);  /* 2 */
+	FF(c, d, a, b, x[2], S13, 0x242070db);  /* 3 */
+	FF(b, c, d, a, x[3], S14, 0xc1bdceee);  /* 4 */
+	FF(a, b, c, d, x[4], S11, 0xf57c0faf);  /* 5 */
+	FF(d, a, b, c, x[5], S12, 0x4787c62a);  /* 6 */
+	FF(c, d, a, b, x[6], S13, 0xa8304613);  /* 7 */
+	FF(b, c, d, a, x[7], S14, 0xfd469501);  /* 8 */
+	FF(a, b, c, d, x[8], S11, 0x698098d8);  /* 9 */
+	FF(d, a, b, c, x[9], S12, 0x8b44f7af);  /* 10 */
+	FF(c, d, a, b, x[10], S13, 0xffff5bb1);  /* 11 */
+	FF(b, c, d, a, x[11], S14, 0x895cd7be);  /* 12 */
+	FF(a, b, c, d, x[12], S11, 0x6b901122);  /* 13 */
+	FF(d, a, b, c, x[13], S12, 0xfd987193);  /* 14 */
+	FF(c, d, a, b, x[14], S13, 0xa679438e);  /* 15 */
+	FF(b, c, d, a, x[15], S14, 0x49b40821);  /* 16 */
 
- /* Round 2 */
-  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
-  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
-  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
-  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
-  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
-  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
-  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
-  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
-  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
-  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
-  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
-  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
-  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
-  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
-  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
-  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
+	/* Round 2 */
+	GG(a, b, c, d, x[1], S21, 0xf61e2562);  /* 17 */
+	GG(d, a, b, c, x[6], S22, 0xc040b340);  /* 18 */
+	GG(c, d, a, b, x[11], S23, 0x265e5a51);  /* 19 */
+	GG(b, c, d, a, x[0], S24, 0xe9b6c7aa);  /* 20 */
+	GG(a, b, c, d, x[5], S21, 0xd62f105d);  /* 21 */
+	GG(d, a, b, c, x[10], S22, 0x2441453);  /* 22 */
+	GG(c, d, a, b, x[15], S23, 0xd8a1e681);  /* 23 */
+	GG(b, c, d, a, x[4], S24, 0xe7d3fbc8);  /* 24 */
+	GG(a, b, c, d, x[9], S21, 0x21e1cde6);  /* 25 */
+	GG(d, a, b, c, x[14], S22, 0xc33707d6);  /* 26 */
+	GG(c, d, a, b, x[3], S23, 0xf4d50d87);  /* 27 */
+	GG(b, c, d, a, x[8], S24, 0x455a14ed);  /* 28 */
+	GG(a, b, c, d, x[13], S21, 0xa9e3e905);  /* 29 */
+	GG(d, a, b, c, x[2], S22, 0xfcefa3f8);  /* 30 */
+	GG(c, d, a, b, x[7], S23, 0x676f02d9);  /* 31 */
+	GG(b, c, d, a, x[12], S24, 0x8d2a4c8a);  /* 32 */
 
-  /* Round 3 */
-  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
-  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
-  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
-  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
-  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
-  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
-  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
-  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
-  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
-  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
-  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
-  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
-  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
-  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
-  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
-  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
+	/* Round 3 */
+	HH(a, b, c, d, x[5], S31, 0xfffa3942);  /* 33 */
+	HH(d, a, b, c, x[8], S32, 0x8771f681);  /* 34 */
+	HH(c, d, a, b, x[11], S33, 0x6d9d6122);  /* 35 */
+	HH(b, c, d, a, x[14], S34, 0xfde5380c);  /* 36 */
+	HH(a, b, c, d, x[1], S31, 0xa4beea44);  /* 37 */
+	HH(d, a, b, c, x[4], S32, 0x4bdecfa9);  /* 38 */
+	HH(c, d, a, b, x[7], S33, 0xf6bb4b60);  /* 39 */
+	HH(b, c, d, a, x[10], S34, 0xbebfbc70);  /* 40 */
+	HH(a, b, c, d, x[13], S31, 0x289b7ec6);  /* 41 */
+	HH(d, a, b, c, x[0], S32, 0xeaa127fa);  /* 42 */
+	HH(c, d, a, b, x[3], S33, 0xd4ef3085);  /* 43 */
+	HH(b, c, d, a, x[6], S34, 0x4881d05);  /* 44 */
+	HH(a, b, c, d, x[9], S31, 0xd9d4d039);  /* 45 */
+	HH(d, a, b, c, x[12], S32, 0xe6db99e5);  /* 46 */
+	HH(c, d, a, b, x[15], S33, 0x1fa27cf8);  /* 47 */
+	HH(b, c, d, a, x[2], S34, 0xc4ac5665);  /* 48 */
 
-  /* Round 4 */
-  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
-  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
-  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
-  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
-  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
-  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
-  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
-  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
-  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
-  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
-  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
-  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
-  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
-  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
-  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
-  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
+	/* Round 4 */
+	II(a, b, c, d, x[0], S41, 0xf4292244);  /* 49 */
+	II(d, a, b, c, x[7], S42, 0x432aff97);  /* 50 */
+	II(c, d, a, b, x[14], S43, 0xab9423a7);  /* 51 */
+	II(b, c, d, a, x[5], S44, 0xfc93a039);  /* 52 */
+	II(a, b, c, d, x[12], S41, 0x655b59c3);  /* 53 */
+	II(d, a, b, c, x[3], S42, 0x8f0ccc92);  /* 54 */
+	II(c, d, a, b, x[10], S43, 0xffeff47d);  /* 55 */
+	II(b, c, d, a, x[1], S44, 0x85845dd1);  /* 56 */
+	II(a, b, c, d, x[8], S41, 0x6fa87e4f);  /* 57 */
+	II(d, a, b, c, x[15], S42, 0xfe2ce6e0);  /* 58 */
+	II(c, d, a, b, x[6], S43, 0xa3014314);  /* 59 */
+	II(b, c, d, a, x[13], S44, 0x4e0811a1);  /* 60 */
+	II(a, b, c, d, x[4], S41, 0xf7537e82);  /* 61 */
+	II(d, a, b, c, x[11], S42, 0xbd3af235);  /* 62 */
+	II(c, d, a, b, x[2], S43, 0x2ad7d2bb);  /* 63 */
+	II(b, c, d, a, x[9], S44, 0xeb86d391);  /* 64 */
 
-  state[0] += a;
-  state[1] += b;
-  state[2] += c;
-  state[3] += d;
+	state[0] += a;
+	state[1] += b;
+	state[2] += c;
+	state[3] += d;
 
-  /* Zeroize sensitive information.
-*/
-  MD5_memset ((POINTER)x, 0, sizeof (x));
+	/* Zeroize sensitive information. */
+	MD5_memset((POINTER) x, 0, sizeof(x));
 }
 
 /* Encodes input (UINT4) into output (unsigned char). Assumes len is
   a multiple of 4.
  */
-static void Encode (output, input, len)
+static void
+Encode(output, input, len)
 unsigned char *output;
 UINT4 *input;
 unsigned int len;
 {
-  unsigned int i, j;
+	unsigned int i, j;
 
-  for (i = 0, j = 0; j < len; i++, j += 4) {
- output[j] = (unsigned char)(input[i] & 0xff);
- output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
- output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
- output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
-  }
+	for (i = 0, j = 0; j < len; i++, j += 4) {
+		output[j] = (unsigned char) (input[i] & 0xff);
+		output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
+		output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
+		output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
+	}
 }
 
 /* Decodes input (unsigned char) into output (UINT4). Assumes len is
   a multiple of 4.
  */
-static void Decode (output, input, len)
+static void
+Decode(output, input, len)
 UINT4 *output;
 unsigned char *input;
 unsigned int len;
 {
-  unsigned int i, j;
+	unsigned int i, j;
 
-  for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
-   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
+	for (i = 0, j = 0; j < len; i++, j += 4)
+		output[i] = ((UINT4) input[j]) | (((UINT4) input[j + 1]) << 8) | (((UINT4) input[j + 2]) << 16) | (((UINT4) input[j + 3]) << 24);
 }
 
 /* Note: Replace "for loop" with standard memcpy if possible.
  */
 
-static void MD5_memcpy (output, input, len)
+static void
+MD5_memcpy(output, input, len)
 POINTER output;
 POINTER input;
 unsigned int len;
 {
-  unsigned int i;
+	unsigned int i;
 
-  for (i = 0; i < len; i++)
-    output[i] = input[i];
+	for (i = 0; i < len; i++)
+		output[i] = input[i];
 }
 
 /* Note: Replace "for loop" with standard memset if possible.
  */
-static void MD5_memset (output, value, len)
+static void
+MD5_memset(output, value, len)
 POINTER output;
 int value;
 unsigned int len;
 {
-  unsigned int i;
+	unsigned int i;
 
-  for (i = 0; i < len; i++)
- ((char *)output)[i] = (char)value;
+	for (i = 0; i < len; i++)
+		((char *) output)[i] = (char) value;
 }