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comparison 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
comparison
equal deleted inserted replaced
9:31cc8a89cb74 10:26e34ae9a3e3
43 #define S41 6 43 #define S41 6
44 #define S42 10 44 #define S42 10
45 #define S43 15 45 #define S43 15
46 #define S44 21 46 #define S44 21
47 47
48 static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64])); 48 static void MD5Transform PROTO_LIST((UINT4[4], unsigned char[64]));
49 static void Encode PROTO_LIST 49 static void Encode PROTO_LIST((unsigned char *, UINT4 *, unsigned int));
50 ((unsigned char *, UINT4 *, unsigned int)); 50 static void Decode PROTO_LIST((UINT4 *, unsigned char *, unsigned int));
51 static void Decode PROTO_LIST 51 static void MD5_memcpy PROTO_LIST((POINTER, POINTER, unsigned int));
52 ((UINT4 *, unsigned char *, unsigned int)); 52 static void MD5_memset PROTO_LIST((POINTER, int, unsigned int));
53 static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
54 static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
55 53
56 static unsigned char PADDING[64] = { 54 static unsigned char PADDING[64] = {
57 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
58 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 57 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
60 }; 58 };
61 59
62 /* F, G, H and I are basic MD5 functions. 60 /* F, G, H and I are basic MD5 functions.
63 */ 61 */
64 #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) 62 #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
94 (a) += (b); \ 92 (a) += (b); \
95 } 93 }
96 94
97 /* MD5 initialization. Begins an MD5 operation, writing a new context. 95 /* MD5 initialization. Begins an MD5 operation, writing a new context.
98 */ 96 */
99 void MD5Init (context) 97 void
100 MD5_CTX *context; /* context */ 98 MD5Init(context)
101 { 99 MD5_CTX *context; /* context */
102 context->count[0] = context->count[1] = 0; 100 {
103 /* Load magic initialization constants. 101 context->count[0] = context->count[1] = 0;
104 */ 102 /* Load magic initialization constants. */
105 context->state[0] = 0x67452301; 103 context->state[0] = 0x67452301;
106 context->state[1] = 0xefcdab89; 104 context->state[1] = 0xefcdab89;
107 context->state[2] = 0x98badcfe; 105 context->state[2] = 0x98badcfe;
108 context->state[3] = 0x10325476; 106 context->state[3] = 0x10325476;
109 } 107 }
110 108
111 /* MD5 block update operation. Continues an MD5 message-digest 109 /* MD5 block update operation. Continues an MD5 message-digest
112 operation, processing another message block, and updating the 110 operation, processing another message block, and updating the
113 context. 111 context.
114 */ 112 */
115 void MD5Update (context, input, inputLen) 113 void
116 MD5_CTX *context; /* context */ 114 MD5Update(context, input, inputLen)
117 unsigned char *input; /* input block */ 115 MD5_CTX *context; /* context */
118 unsigned int inputLen; /* length of input block */ 116 unsigned char *input; /* input block */
119 { 117 unsigned int inputLen; /* length of input block */
120 unsigned int i, index, partLen; 118 {
121 119 unsigned int i, index, partLen;
122 /* Compute number of bytes mod 64 */ 120
123 index = (unsigned int)((context->count[0] >> 3) & 0x3F); 121 /* Compute number of bytes mod 64 */
124 122 index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
125 /* Update number of bits */ 123
126 if ((context->count[0] += ((UINT4)inputLen << 3)) 124 /* Update number of bits */
127 < ((UINT4)inputLen << 3)) 125 if ((context->count[0] += ((UINT4) inputLen << 3)) < ((UINT4) inputLen << 3))
128 context->count[1]++; 126 context->count[1]++;
129 context->count[1] += ((UINT4)inputLen >> 29); 127 context->count[1] += ((UINT4) inputLen >> 29);
130 128
131 partLen = 64 - index; 129 partLen = 64 - index;
132 130
133 /* Transform as many times as possible. 131 /* Transform as many times as possible.
134 */ 132 */
135 if (inputLen >= partLen) { 133 if (inputLen >= partLen) {
136 MD5_memcpy 134 MD5_memcpy((POINTER) & context->buffer[index], (POINTER) input, partLen);
137 ((POINTER)&context->buffer[index], (POINTER)input, partLen); 135 MD5Transform(context->state, context->buffer);
138 MD5Transform (context->state, context->buffer); 136
139 137 for (i = partLen; i + 63 < inputLen; i += 64)
140 for (i = partLen; i + 63 < inputLen; i += 64) 138 MD5Transform(context->state, &input[i]);
141 MD5Transform (context->state, &input[i]); 139
142 140 index = 0;
143 index = 0; 141 } else
144 } 142 i = 0;
145 else 143
146 i = 0; 144 /* Buffer remaining input */
147 145 MD5_memcpy((POINTER) & context->buffer[index], (POINTER) & input[i], inputLen - i);
148 /* Buffer remaining input */
149 MD5_memcpy
150 ((POINTER)&context->buffer[index], (POINTER)&input[i],
151 inputLen-i);
152 } 146 }
153 147
154 /* MD5 finalization. Ends an MD5 message-digest operation, writing the 148 /* MD5 finalization. Ends an MD5 message-digest operation, writing the
155 the message digest and zeroizing the context. 149 the message digest and zeroizing the context.
156 */ 150 */
157 void MD5Final (digest, context) 151 void
158 unsigned char digest[16]; /* message digest */ 152 MD5Final(digest, context)
159 MD5_CTX *context; /* context */ 153 unsigned char digest[16]; /* message digest */
160 { 154 MD5_CTX *context; /* context */
161 unsigned char bits[8]; 155 {
162 unsigned int index, padLen; 156 unsigned char bits[8];
163 157 unsigned int index, padLen;
164 /* Save number of bits */ 158
165 Encode (bits, context->count, 8); 159 /* Save number of bits */
166 160 Encode(bits, context->count, 8);
167 /* Pad out to 56 mod 64. 161
168 */ 162 /* Pad out to 56 mod 64.
169 index = (unsigned int)((context->count[0] >> 3) & 0x3f); 163 */
170 padLen = (index < 56) ? (56 - index) : (120 - index); 164 index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
171 MD5Update (context, PADDING, padLen); 165 padLen = (index < 56) ? (56 - index) : (120 - index);
172 166 MD5Update(context, PADDING, padLen);
173 /* Append length (before padding) */ 167
174 MD5Update (context, bits, 8); 168 /* Append length (before padding) */
175 169 MD5Update(context, bits, 8);
176 /* Store state in digest */ 170
177 Encode (digest, context->state, 16); 171 /* Store state in digest */
178 172 Encode(digest, context->state, 16);
179 /* Zeroize sensitive information. 173
180 */ 174 /* Zeroize sensitive information.
181 MD5_memset ((POINTER)context, 0, sizeof (*context)); 175 */
176 MD5_memset((POINTER) context, 0, sizeof(*context));
182 } 177 }
183 178
184 /* MD5 basic transformation. Transforms state based on block. 179 /* MD5 basic transformation. Transforms state based on block.
185 */ 180 */
186 static void MD5Transform (state, block) 181 static void
182 MD5Transform(state, block)
187 UINT4 state[4]; 183 UINT4 state[4];
188 unsigned char block[64]; 184 unsigned char block[64];
189 { 185 {
190 UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; 186 UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
191 187
192 Decode (x, block, 64); 188 Decode(x, block, 64);
193 189
194 /* Round 1 */ 190 /* Round 1 */
195 FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ 191 FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
196 FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ 192 FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
197 FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ 193 FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
198 FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ 194 FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
199 FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ 195 FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
200 FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ 196 FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
201 FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ 197 FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
202 FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ 198 FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
203 FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ 199 FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
204 FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ 200 FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
205 FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ 201 FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
206 FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ 202 FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
207 FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ 203 FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
208 FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ 204 FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
209 FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ 205 FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
210 FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ 206 FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
211 207
212 /* Round 2 */ 208 /* Round 2 */
213 GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ 209 GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
214 GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ 210 GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
215 GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ 211 GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
216 GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ 212 GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
217 GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ 213 GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
218 GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */ 214 GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
219 GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ 215 GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
220 GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ 216 GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
221 GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ 217 GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
222 GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ 218 GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
223 GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ 219 GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
224 GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ 220 GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
225 GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ 221 GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
226 GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ 222 GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
227 GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ 223 GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
228 GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ 224 GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
229 225
230 /* Round 3 */ 226 /* Round 3 */
231 HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ 227 HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
232 HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ 228 HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
233 HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ 229 HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
234 HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ 230 HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
235 HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ 231 HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
236 HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ 232 HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
237 HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ 233 HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
238 HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ 234 HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
239 HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ 235 HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
240 HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ 236 HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
241 HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ 237 HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
242 HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ 238 HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
243 HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ 239 HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
244 HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ 240 HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
245 HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ 241 HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
246 HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ 242 HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
247 243
248 /* Round 4 */ 244 /* Round 4 */
249 II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ 245 II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
250 II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ 246 II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
251 II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ 247 II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
252 II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ 248 II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
253 II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ 249 II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
254 II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ 250 II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
255 II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ 251 II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
256 II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ 252 II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
257 II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ 253 II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
258 II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ 254 II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
259 II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ 255 II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
260 II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ 256 II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
261 II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ 257 II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
262 II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ 258 II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
263 II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ 259 II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
264 II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ 260 II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
265 261
266 state[0] += a; 262 state[0] += a;
267 state[1] += b; 263 state[1] += b;
268 state[2] += c; 264 state[2] += c;
269 state[3] += d; 265 state[3] += d;
270 266
271 /* Zeroize sensitive information. 267 /* Zeroize sensitive information. */
272 */ 268 MD5_memset((POINTER) x, 0, sizeof(x));
273 MD5_memset ((POINTER)x, 0, sizeof (x));
274 } 269 }
275 270
276 /* Encodes input (UINT4) into output (unsigned char). Assumes len is 271 /* Encodes input (UINT4) into output (unsigned char). Assumes len is
277 a multiple of 4. 272 a multiple of 4.
278 */ 273 */
279 static void Encode (output, input, len) 274 static void
275 Encode(output, input, len)
280 unsigned char *output; 276 unsigned char *output;
281 UINT4 *input; 277 UINT4 *input;
282 unsigned int len; 278 unsigned int len;
283 { 279 {
284 unsigned int i, j; 280 unsigned int i, j;
285 281
286 for (i = 0, j = 0; j < len; i++, j += 4) { 282 for (i = 0, j = 0; j < len; i++, j += 4) {
287 output[j] = (unsigned char)(input[i] & 0xff); 283 output[j] = (unsigned char) (input[i] & 0xff);
288 output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); 284 output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
289 output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); 285 output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
290 output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); 286 output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
291 } 287 }
292 } 288 }
293 289
294 /* Decodes input (unsigned char) into output (UINT4). Assumes len is 290 /* Decodes input (unsigned char) into output (UINT4). Assumes len is
295 a multiple of 4. 291 a multiple of 4.
296 */ 292 */
297 static void Decode (output, input, len) 293 static void
294 Decode(output, input, len)
298 UINT4 *output; 295 UINT4 *output;
299 unsigned char *input; 296 unsigned char *input;
300 unsigned int len; 297 unsigned int len;
301 { 298 {
302 unsigned int i, j; 299 unsigned int i, j;
303 300
304 for (i = 0, j = 0; j < len; i++, j += 4) 301 for (i = 0, j = 0; j < len; i++, j += 4)
305 output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) | 302 output[i] = ((UINT4) input[j]) | (((UINT4) input[j + 1]) << 8) | (((UINT4) input[j + 2]) << 16) | (((UINT4) input[j + 3]) << 24);
306 (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
307 } 303 }
308 304
309 /* Note: Replace "for loop" with standard memcpy if possible. 305 /* Note: Replace "for loop" with standard memcpy if possible.
310 */ 306 */
311 307
312 static void MD5_memcpy (output, input, len) 308 static void
309 MD5_memcpy(output, input, len)
313 POINTER output; 310 POINTER output;
314 POINTER input; 311 POINTER input;
315 unsigned int len; 312 unsigned int len;
316 { 313 {
317 unsigned int i; 314 unsigned int i;
318 315
319 for (i = 0; i < len; i++) 316 for (i = 0; i < len; i++)
320 output[i] = input[i]; 317 output[i] = input[i];
321 } 318 }
322 319
323 /* Note: Replace "for loop" with standard memset if possible. 320 /* Note: Replace "for loop" with standard memset if possible.
324 */ 321 */
325 static void MD5_memset (output, value, len) 322 static void
323 MD5_memset(output, value, len)
326 POINTER output; 324 POINTER output;
327 int value; 325 int value;
328 unsigned int len; 326 unsigned int len;
329 { 327 {
330 unsigned int i; 328 unsigned int i;
331 329
332 for (i = 0; i < len; i++) 330 for (i = 0; i < len; i++)
333 ((char *)output)[i] = (char)value; 331 ((char *) output)[i] = (char) value;
334 } 332 }