44
40
= {0xB3, 0xE2, 0x0F, 0x39, 0xF2, 0x92, 0x11, 0xD6,
45
41
0x97, 0xA4, 0x00, 0x30, 0x65, 0x43, 0xEC, 0xAC};
47
#define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
48
#define ror(x,n) ( ((x) >> (n)) | ((x) << (32-(n))) )
51
grub_uint32_t A,B,C,D; /* chaining variables */
52
grub_uint32_t nblocks;
58
md5_init( void *context )
60
MD5_CONTEXT *ctx = context;
71
/* These are the four functions used in the four steps of the MD5 algorithm
72
and defined in the RFC 1321. The first function is a little bit optimized
73
(as found in Colin Plumbs public domain implementation). */
74
/* #define FF(b, c, d) ((b & c) | (~b & d)) */
75
#define FF(b, c, d) (d ^ (b & (c ^ d)))
76
#define FG(b, c, d) FF (d, b, c)
77
#define FH(b, c, d) (b ^ c ^ d)
78
#define FI(b, c, d) (c ^ (b | ~d))
82
* transform n*64 grub_uint8_ts
85
transform ( MD5_CONTEXT *ctx, const unsigned char *data )
87
grub_uint32_t correct_words[16];
88
register grub_uint32_t A = ctx->A;
89
register grub_uint32_t B = ctx->B;
90
register grub_uint32_t C = ctx->C;
91
register grub_uint32_t D = ctx->D;
92
grub_uint32_t *cwp = correct_words;
94
#ifdef GRUB_CPU_WORDS_BIGENDIAN
97
const grub_uint32_t *p = (const grub_uint32_t *) data;
99
for (i = 0; i < 16; i++)
100
correct_words[i] = grub_le_to_cpu32 (p[i]);
103
grub_memcpy (correct_words, data, 64);
106
#define OP(a, b, c, d, s, T) \
109
a += FF (b, c, d) + (*cwp++) + T; \
115
/* Before we start, one word about the strange constants.
116
They are defined in RFC 1321 as
118
T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
122
OP (A, B, C, D, 7, 0xd76aa478);
123
OP (D, A, B, C, 12, 0xe8c7b756);
124
OP (C, D, A, B, 17, 0x242070db);
125
OP (B, C, D, A, 22, 0xc1bdceee);
126
OP (A, B, C, D, 7, 0xf57c0faf);
127
OP (D, A, B, C, 12, 0x4787c62a);
128
OP (C, D, A, B, 17, 0xa8304613);
129
OP (B, C, D, A, 22, 0xfd469501);
130
OP (A, B, C, D, 7, 0x698098d8);
131
OP (D, A, B, C, 12, 0x8b44f7af);
132
OP (C, D, A, B, 17, 0xffff5bb1);
133
OP (B, C, D, A, 22, 0x895cd7be);
134
OP (A, B, C, D, 7, 0x6b901122);
135
OP (D, A, B, C, 12, 0xfd987193);
136
OP (C, D, A, B, 17, 0xa679438e);
137
OP (B, C, D, A, 22, 0x49b40821);
140
#define OP(f, a, b, c, d, k, s, T) \
143
a += f (b, c, d) + correct_words[k] + T; \
150
OP (FG, A, B, C, D, 1, 5, 0xf61e2562);
151
OP (FG, D, A, B, C, 6, 9, 0xc040b340);
152
OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
153
OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
154
OP (FG, A, B, C, D, 5, 5, 0xd62f105d);
155
OP (FG, D, A, B, C, 10, 9, 0x02441453);
156
OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
157
OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
158
OP (FG, A, B, C, D, 9, 5, 0x21e1cde6);
159
OP (FG, D, A, B, C, 14, 9, 0xc33707d6);
160
OP (FG, C, D, A, B, 3, 14, 0xf4d50d87);
161
OP (FG, B, C, D, A, 8, 20, 0x455a14ed);
162
OP (FG, A, B, C, D, 13, 5, 0xa9e3e905);
163
OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8);
164
OP (FG, C, D, A, B, 7, 14, 0x676f02d9);
165
OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
168
OP (FH, A, B, C, D, 5, 4, 0xfffa3942);
169
OP (FH, D, A, B, C, 8, 11, 0x8771f681);
170
OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
171
OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
172
OP (FH, A, B, C, D, 1, 4, 0xa4beea44);
173
OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9);
174
OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60);
175
OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
176
OP (FH, A, B, C, D, 13, 4, 0x289b7ec6);
177
OP (FH, D, A, B, C, 0, 11, 0xeaa127fa);
178
OP (FH, C, D, A, B, 3, 16, 0xd4ef3085);
179
OP (FH, B, C, D, A, 6, 23, 0x04881d05);
180
OP (FH, A, B, C, D, 9, 4, 0xd9d4d039);
181
OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
182
OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
183
OP (FH, B, C, D, A, 2, 23, 0xc4ac5665);
186
OP (FI, A, B, C, D, 0, 6, 0xf4292244);
187
OP (FI, D, A, B, C, 7, 10, 0x432aff97);
188
OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
189
OP (FI, B, C, D, A, 5, 21, 0xfc93a039);
190
OP (FI, A, B, C, D, 12, 6, 0x655b59c3);
191
OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92);
192
OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
193
OP (FI, B, C, D, A, 1, 21, 0x85845dd1);
194
OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f);
195
OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
196
OP (FI, C, D, A, B, 6, 15, 0xa3014314);
197
OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
198
OP (FI, A, B, C, D, 4, 6, 0xf7537e82);
199
OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
200
OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
201
OP (FI, B, C, D, A, 9, 21, 0xeb86d391);
203
/* Put checksum in context given as argument. */
210
/* The routine updates the message-digest context to
211
* account for the presence of each of the characters inBuf[0..inLen-1]
212
* in the message whose digest is being computed.
215
md5_write( void *context, const void *inbuf_arg , grub_size_t inlen)
217
const unsigned char *inbuf = inbuf_arg;
218
MD5_CONTEXT *hd = context;
220
if( hd->count == 64 ) /* flush the buffer */
222
transform( hd, hd->buf );
223
// _gcry_burn_stack (80+6*sizeof(void*));
232
for( ; inlen && hd->count < 64; inlen-- )
233
hd->buf[hd->count++] = *inbuf++;
234
md5_write( hd, NULL, 0 );
238
// _gcry_burn_stack (80+6*sizeof(void*));
242
transform( hd, inbuf );
248
for( ; inlen && hd->count < 64; inlen-- )
249
hd->buf[hd->count++] = *inbuf++;
255
/* The routine final terminates the message-digest computation and
256
* ends with the desired message digest in mdContext->digest[0...15].
257
* The handle is prepared for a new MD5 cycle.
258
* Returns 16 grub_uint8_ts representing the digest.
261
md5_final( void *context)
263
MD5_CONTEXT *hd = context;
264
grub_uint32_t t, msb, lsb;
267
md5_write(hd, NULL, 0); /* flush */;
270
/* multiply by 64 to make a grub_uint8_t count */
275
if( (lsb += hd->count) < t )
277
/* multiply by 8 to make a bit count */
283
if( hd->count < 56 ) /* enough room */
285
hd->buf[hd->count++] = 0x80; /* pad */
286
while( hd->count < 56 )
287
hd->buf[hd->count++] = 0; /* pad */
289
else /* need one extra block */
291
hd->buf[hd->count++] = 0x80; /* pad character */
292
while( hd->count < 64 )
293
hd->buf[hd->count++] = 0;
294
md5_write(hd, NULL, 0); /* flush */;
295
grub_memset(hd->buf, 0, 56 ); /* fill next block with zeroes */
297
/* append the 64 bit count */
299
hd->buf[57] = lsb >> 8;
300
hd->buf[58] = lsb >> 16;
301
hd->buf[59] = lsb >> 24;
303
hd->buf[61] = msb >> 8;
304
hd->buf[62] = msb >> 16;
305
hd->buf[63] = msb >> 24;
306
transform( hd, hd->buf );
307
// _gcry_burn_stack (80+6*sizeof(void*));
309
p = (grub_uint32_t *) hd->buf;
310
#define X(a) do { *p = grub_le_to_cpu32 (hd->a); p++; } while (0)
320
* GRUB2 Crypto Interface
321
* Written by Michael Gorven
324
md5 (const char *in, grub_size_t insize, char *out)
329
md5_write (&hd, in, insize);
331
grub_memcpy (out, hd.buf, 16);
333
return GRUB_ERR_NONE;
337
44
grub_cmd_xnu_uuid (grub_command_t cmd __attribute__ ((unused)),
338
45
int argc, char **args)
340
struct tohash hashme;
341
grub_uint8_t xnu_uuid[16];
48
grub_uint8_t *xnu_uuid;
342
49
char uuid_string[sizeof ("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")];
51
grub_uint8_t ctx[GRUB_MD_MD5->contextsize];
346
54
return grub_error (GRUB_ERR_BAD_ARGUMENT, "UUID required");
348
hashme.serial = grub_cpu_to_be64 (grub_strtoull (args[0], 0, 16));
349
grub_memcpy (hashme.prefix, hash_prefix, sizeof (hashme.prefix));
351
md5 ((char *) &hashme, sizeof (hashme), (char *) xnu_uuid);
56
serial = grub_cpu_to_be64 (grub_strtoull (args[0], 0, 16));
58
GRUB_MD_MD5->init (&ctx);
59
GRUB_MD_MD5->write (&ctx, hash_prefix, sizeof (hash_prefix));
60
GRUB_MD_MD5->write (&ctx, &serial, sizeof (serial));
61
GRUB_MD_MD5->final (&ctx);
62
xnu_uuid = GRUB_MD_MD5->read (&ctx);
352
64
grub_sprintf (uuid_string,
353
65
"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
354
66
(unsigned int) xnu_uuid[0], (unsigned int) xnu_uuid[1],