Asterisk - The Open Source Telephony Project GIT-master-f3e88d3
Data Structures | Functions
md5.h File Reference

MD5 digest functions. More...

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures

struct  MD5Context
 

Functions

void MD5Final (unsigned char digest[16], struct MD5Context *context)
 
void MD5Init (struct MD5Context *context)
 
void MD5Transform (uint32_t buf[4], uint32_t const in[16])
 
void MD5Update (struct MD5Context *context, unsigned char const *buf, unsigned len)
 

Detailed Description

MD5 digest functions.

Definition in file md5.h.

Function Documentation

◆ MD5Final()

void MD5Final ( unsigned char  digest[16],
struct MD5Context context 
)

Definition at line 120 of file md5.c.

121{
122 unsigned count;
123 unsigned char *p;
124 uint32_t *in_buf;
125
126 /* Compute number of bytes mod 64 */
127 count = (ctx->bits[0] >> 3) & 0x3F;
128
129 /* Set the first char of padding to 0x80. This is safe since there is
130 always at least one byte free */
131 p = ctx->in + count;
132 *p++ = 0x80;
133
134 /* Bytes of padding needed to make 64 bytes */
135 count = 64 - 1 - count;
136
137 /* Pad out to 56 mod 64 */
138 if (count < 8) {
139 /* Two lots of padding: Pad the first block to 64 bytes */
140 memset(p, 0, count);
141 byteReverse(ctx->in, 16);
142 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
143
144 /* Now fill the next block with 56 bytes */
145 memset(ctx->in, 0, 56);
146 } else {
147 /* Pad block to 56 bytes */
148 memset(p, 0, count - 8);
149 }
150 byteReverse(ctx->in, 14);
151
152 /* Append length in bits and transform */
153 in_buf = (uint32_t *) ctx->in;
154 in_buf[14] = ctx->bits[0];
155 in_buf[15] = ctx->bits[1];
156
157 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
158 byteReverse((unsigned char *) ctx->buf, 4);
159 memcpy(digest, ctx->buf, 16);
160 memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
161}
void MD5Transform(uint32_t buf[4], uint32_t const in[16])
Definition: md5.c:182
#define byteReverse(buf, len)
Definition: md5.c:32

References MD5Context::bits, MD5Context::buf, byteReverse, MD5Context::in, and MD5Transform().

Referenced by ast_md5_hash(), authenticate(), authenticate_verify(), decrypt_frame(), festival_exec(), iax2_key_rotate(), manager_login(), prov_ver_calc(), register_verify(), try_firmware(), and verify_key().

◆ MD5Init()

void MD5Init ( struct MD5Context context)

Definition at line 57 of file md5.c.

58{
59 ctx->buf[0] = 0x67452301;
60 ctx->buf[1] = 0xefcdab89;
61 ctx->buf[2] = 0x98badcfe;
62 ctx->buf[3] = 0x10325476;
63
64 ctx->bits[0] = 0;
65 ctx->bits[1] = 0;
66}

References MD5Context::bits, and MD5Context::buf.

Referenced by ast_md5_hash(), authenticate(), authenticate_verify(), decrypt_frame(), festival_exec(), iax2_key_rotate(), manager_login(), prov_ver_calc(), register_verify(), try_firmware(), and verify_key().

◆ MD5Transform()

void MD5Transform ( uint32_t  buf[4],
uint32_t const  in[16] 
)

Definition at line 182 of file md5.c.

183{
184 register uint32_t a, b, c, d;
185
186 a = buf[0];
187 b = buf[1];
188 c = buf[2];
189 d = buf[3];
190
191 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
192 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
193 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
194 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
195 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
196 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
197 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
198 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
199 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
200 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
201 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
202 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
203 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
204 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
205 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
206 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
207
208 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
209 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
210 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
211 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
212 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
213 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
214 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
215 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
216 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
217 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
218 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
219 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
220 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
221 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
222 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
223 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
224
225 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
226 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
227 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
228 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
229 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
230 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
231 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
232 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
233 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
234 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
235 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
236 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
237 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
238 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
239 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
240 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
241
242 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
243 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
244 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
245 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
246 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
247 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
248 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
249 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
250 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
251 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
252 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
253 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
254 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
255 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
256 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
257 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
258
259 buf[0] += a;
260 buf[1] += b;
261 buf[2] += c;
262 buf[3] += d;
263}
char buf[BUFSIZE]
Definition: eagi_proxy.c:66
#define MD5STEP(f, w, x, y, z, data, s)
Definition: md5.c:174
#define F1(x, y, z)
Definition: md5.c:168
#define F4(x, y, z)
Definition: md5.c:171
#define F3(x, y, z)
Definition: md5.c:170
#define F2(x, y, z)
Definition: md5.c:169
static struct test_val b
static struct test_val a
static struct test_val d
static struct test_val c
FILE * in
Definition: utils/frame.c:33

References a, b, buf, c, d, F1, F2, F3, F4, in, and MD5STEP.

Referenced by MD5Final(), and MD5Update().

◆ MD5Update()

void MD5Update ( struct MD5Context context,
unsigned char const *  buf,
unsigned  len 
)

Definition at line 72 of file md5.c.

73{
74 uint32_t t;
75
76 /* Update bitcount */
77
78 t = ctx->bits[0];
79 if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)
80 ctx->bits[1]++; /* Carry from low to high */
81 ctx->bits[1] += len >> 29;
82
83 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
84
85 /* Handle any leading odd-sized chunks */
86
87 if (t) {
88 unsigned char *p = (unsigned char *) ctx->in + t;
89
90 t = 64 - t;
91 if (len < t) {
92 memcpy(p, buf, len);
93 return;
94 }
95 memcpy(p, buf, t);
96 byteReverse(ctx->in, 16);
97 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
98 buf += t;
99 len -= t;
100 }
101 /* Process data in 64-byte chunks */
102
103 while (len >= 64) {
104 memcpy(ctx->in, buf, 64);
105 byteReverse(ctx->in, 16);
106 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
107 buf += 64;
108 len -= 64;
109 }
110
111 /* Handle any remaining bytes of data. */
112
113 memcpy(ctx->in, buf, len);
114}
if(!yyg->yy_init)
Definition: ast_expr2f.c:854
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)

References MD5Context::bits, MD5Context::buf, buf, byteReverse, if(), MD5Context::in, len(), and MD5Transform().

Referenced by ast_md5_hash(), authenticate(), authenticate_verify(), decrypt_frame(), festival_exec(), iax2_key_rotate(), manager_login(), prov_ver_calc(), register_verify(), try_firmware(), and verify_key().