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Guido said include these in the Great ANSI-fication, so here they are!
This commit is contained in:
Fred Drake
parent
9ac81f69b2
commit
859bad00cb
2 changed files with 202 additions and 245 deletions
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@ -27,18 +27,6 @@ documentation and/or software.
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/* GLOBAL.H - RSAREF types and constants
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*/
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/* PROTOTYPES should be set to one if and only if the compiler supports
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function argument prototyping.
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The following makes PROTOTYPES default to 0 if it has not already
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been defined with C compiler flags.
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*/
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#ifdef HAVE_PROTOTYPES
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#define PROTOTYPES 1
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#endif
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#ifndef PROTOTYPES
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#define PROTOTYPES 0
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#endif
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/* POINTER defines a generic pointer type */
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typedef unsigned char *POINTER;
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@ -62,15 +50,6 @@ typedef unsigned long int UINT4;
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/* Too bad if neither is */
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#endif
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/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
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If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
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returns an empty list.
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*/
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#if PROTOTYPES
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#define PROTO_LIST(list) list
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#else
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#define PROTO_LIST(list) ()
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#endif
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/* ========== End global.h; continue md5.h ========== */
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/* MD5 context. */
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@ -87,7 +66,6 @@ typedef struct {
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#define MD5Update _Py_MD5Update
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#define MD5Final _Py_MD5Final
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void MD5Init PROTO_LIST ((MD5_CTX *));
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void MD5Update PROTO_LIST
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((MD5_CTX *, unsigned char *, unsigned int));
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void MD5Final PROTO_LIST ((unsigned char [16], MD5_CTX *));
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void MD5Init(MD5_CTX *);
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void MD5Update(MD5_CTX *, unsigned char *, unsigned int);
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void MD5Final(unsigned char [16], MD5_CTX *);
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109
Modules/md5c.c
109
Modules/md5c.c
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@ -26,8 +26,7 @@ documentation and/or software.
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#include "config.h"
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#include "md5.h"
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/* Constants for MD5Transform routine.
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*/
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/* Constants for MD5Transform routine. */
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#define S11 7
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#define S12 12
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@ -46,13 +45,11 @@ documentation and/or software.
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#define S43 15
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#define S44 21
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static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
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static void Encode PROTO_LIST
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((unsigned char *, UINT4 *, unsigned int));
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static void Decode PROTO_LIST
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((UINT4 *, unsigned char *, unsigned int));
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static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
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static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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static void MD5Transform(UINT4[4], unsigned char[64]);
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static void Encode(unsigned char *, UINT4 *, unsigned int);
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static void Decode(UINT4 *, unsigned char *, unsigned int);
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static void MD5_memcpy(POINTER, POINTER, unsigned int);
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static void MD5_memset(POINTER, int, unsigned int);
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static unsigned char PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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@ -60,15 +57,13 @@ static unsigned char PADDING[64] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* F, G, H and I are basic MD5 functions.
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*/
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/* F, G, H and I are basic MD5 functions. */
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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/* ROTATE_LEFT rotates x left n bits. */
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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@ -95,28 +90,26 @@ Rotation is separate from addition to prevent recomputation.
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(a) += (b); \
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}
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/* MD5 initialization. Begins an MD5 operation, writing a new context.
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*/
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void MD5Init (context)
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MD5_CTX *context; /* context */
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/* MD5 initialization. Begins an MD5 operation, writing a new context. */
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void
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MD5Init(MD5_CTX *context)
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{
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.
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*/
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/* Load magic initialization constants. */
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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/* MD5 block update operation. Continues an MD5 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void MD5Update (context, input, inputLen)
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MD5_CTX *context; /* context */
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unsigned char *input; /* input block */
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unsigned int inputLen; /* length of input block */
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void
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MD5Update(MD5_CTX *context, unsigned char *input, unsigned int inputLen)
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{
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unsigned int i, index, partLen;
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@ -131,11 +124,9 @@ unsigned int inputLen; /* length of input block */
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partLen = 64 - index;
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/* Transform as many times as possible.
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*/
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/* Transform as many times as possible. */
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if (inputLen >= partLen) {
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MD5_memcpy
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((POINTER)&context->buffer[index], (POINTER)input, partLen);
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MD5_memcpy((POINTER)&context->buffer[index], (POINTER)input, partLen);
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MD5Transform(context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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@ -147,17 +138,15 @@ unsigned int inputLen; /* length of input block */
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i = 0;
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/* Buffer remaining input */
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MD5_memcpy
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((POINTER)&context->buffer[index], (POINTER)&input[i],
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inputLen-i);
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MD5_memcpy((POINTER)&context->buffer[index],
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(POINTER)&input[i], inputLen-i);
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}
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/* MD5 finalization. Ends an MD5 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void MD5Final (digest, context)
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unsigned char digest[16]; /* message digest */
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MD5_CTX *context; /* context */
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void
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MD5Final(unsigned char digest[16], MD5_CTX *context)
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{
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unsigned char bits[8];
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unsigned int index, padLen;
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@ -165,8 +154,7 @@ MD5_CTX *context; /* context */
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/* Save number of bits */
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Encode (bits, context->count, 8);
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/* Pad out to 56 mod 64.
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*/
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/* Pad out to 56 mod 64. */
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index = (unsigned int)((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MD5Update(context, PADDING, padLen);
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@ -177,16 +165,14 @@ MD5_CTX *context; /* context */
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/* Store state in digest */
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Encode(digest, context->state, 16);
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/* Zeroize sensitive information.
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*/
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/* Zeroize sensitive information. */
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MD5_memset((POINTER)context, 0, sizeof (*context));
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}
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/* MD5 basic transformation. Transforms state based on block.
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*/
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static void MD5Transform (state, block)
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UINT4 state[4];
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unsigned char block[64];
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/* MD5 basic transformation. Transforms state based on block. */
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static void
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MD5Transform(UINT4 state[4], unsigned char block[64])
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{
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UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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@ -269,18 +255,16 @@ unsigned char block[64];
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state[2] += c;
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state[3] += d;
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/* Zeroize sensitive information.
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*/
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/* Zeroize sensitive information. */
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MD5_memset((POINTER)x, 0, sizeof (x));
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}
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/* Encodes input (UINT4) into output (unsigned char). Assumes len is
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a multiple of 4.
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*/
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static void Encode (output, input, len)
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unsigned char *output;
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UINT4 *input;
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unsigned int len;
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static void
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Encode(unsigned char *output, UINT4 *input, unsigned int len)
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{
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unsigned int i, j;
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@ -292,28 +276,25 @@ unsigned int len;
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}
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}
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/* Decodes input (unsigned char) into output (UINT4). Assumes len is
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a multiple of 4.
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*/
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static void Decode (output, input, len)
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UINT4 *output;
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unsigned char *input;
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unsigned int len;
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static void
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Decode(UINT4 *output, unsigned char *input, unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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for (i = 0, j = 0; j < len; i++, j += 4) {
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output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
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(((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
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}
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}
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/* Note: Replace "for loop" with standard memcpy if possible.
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*/
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static void MD5_memcpy (output, input, len)
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POINTER output;
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POINTER input;
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unsigned int len;
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/* Note: Replace "for loop" with standard memcpy if possible. */
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static void
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MD5_memcpy(POINTER output, POINTER input, unsigned int len)
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{
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unsigned int i;
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@ -321,12 +302,10 @@ unsigned int len;
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output[i] = input[i];
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}
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/* Note: Replace "for loop" with standard memset if possible.
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*/
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static void MD5_memset (output, value, len)
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POINTER output;
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int value;
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unsigned int len;
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/* Note: Replace "for loop" with standard memset if possible. */
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static void
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MD5_memset(POINTER output, int value, unsigned int len)
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{
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unsigned int i;
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