1 /* SHA512 module */
2
3 /* This module provides an interface to NIST's SHA-512 and SHA-384 Algorithms */
4
5 /* See below for information about the original code this module was
6 based upon. Additional work performed by:
7
8 Andrew Kuchling (amk@amk.ca)
9 Greg Stein (gstein@lyra.org)
10 Trevor Perrin (trevp@trevp.net)
11
12 Copyright (C) 2005 Gregory P. Smith (greg@krypto.org)
13 Licensed to PSF under a Contributor Agreement.
14
15 */
16
17 /* SHA objects */
18
19 #include "Python.h"
20 #include "structmember.h"
21
22 #ifdef PY_LONG_LONG /* If no PY_LONG_LONG, don't compile anything! */
23
24 /* Endianness testing and definitions */
25 #define TestEndianness(variable) {int i=1; variable=PCT_BIG_ENDIAN;\
26 if (*((char*)&i)==1) variable=PCT_LITTLE_ENDIAN;}
27
28 #define PCT_LITTLE_ENDIAN 1
29 #define PCT_BIG_ENDIAN 0
30
31 /* Some useful types */
32
33 typedef unsigned char SHA_BYTE;
34
35 #if SIZEOF_INT == 4
36 typedef unsigned int SHA_INT32; /* 32-bit integer */
37 typedef unsigned PY_LONG_LONG SHA_INT64; /* 64-bit integer */
38 #else
39 /* not defined. compilation will die. */
40 #endif
41
42 /* The SHA block size and message digest sizes, in bytes */
43
44 #define SHA_BLOCKSIZE 128
45 #define SHA_DIGESTSIZE 64
46
47 /* The structure for storing SHA info */
48
49 typedef struct {
50 PyObject_HEAD
51 SHA_INT64 digest[8]; /* Message digest */
52 SHA_INT32 count_lo, count_hi; /* 64-bit bit count */
53 SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */
54 int Endianness;
55 int local; /* unprocessed amount in data */
56 int digestsize;
57 } SHAobject;
58
59 /* When run on a little-endian CPU we need to perform byte reversal on an
60 array of longwords. */
61
longReverse(SHA_INT64 * buffer,int byteCount,int Endianness)62 static void longReverse(SHA_INT64 *buffer, int byteCount, int Endianness)
63 {
64 SHA_INT64 value;
65
66 if ( Endianness == PCT_BIG_ENDIAN )
67 return;
68
69 byteCount /= sizeof(*buffer);
70 while (byteCount--) {
71 value = *buffer;
72
73 ((unsigned char*)buffer)[0] = (unsigned char)(value >> 56) & 0xff;
74 ((unsigned char*)buffer)[1] = (unsigned char)(value >> 48) & 0xff;
75 ((unsigned char*)buffer)[2] = (unsigned char)(value >> 40) & 0xff;
76 ((unsigned char*)buffer)[3] = (unsigned char)(value >> 32) & 0xff;
77 ((unsigned char*)buffer)[4] = (unsigned char)(value >> 24) & 0xff;
78 ((unsigned char*)buffer)[5] = (unsigned char)(value >> 16) & 0xff;
79 ((unsigned char*)buffer)[6] = (unsigned char)(value >> 8) & 0xff;
80 ((unsigned char*)buffer)[7] = (unsigned char)(value ) & 0xff;
81
82 buffer++;
83 }
84 }
85
SHAcopy(SHAobject * src,SHAobject * dest)86 static void SHAcopy(SHAobject *src, SHAobject *dest)
87 {
88 dest->Endianness = src->Endianness;
89 dest->local = src->local;
90 dest->digestsize = src->digestsize;
91 dest->count_lo = src->count_lo;
92 dest->count_hi = src->count_hi;
93 memcpy(dest->digest, src->digest, sizeof(src->digest));
94 memcpy(dest->data, src->data, sizeof(src->data));
95 }
96
97
98 /* ------------------------------------------------------------------------
99 *
100 * This code for the SHA-512 algorithm was noted as public domain. The
101 * original headers are pasted below.
102 *
103 * Several changes have been made to make it more compatible with the
104 * Python environment and desired interface.
105 *
106 */
107
108 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
109 *
110 * LibTomCrypt is a library that provides various cryptographic
111 * algorithms in a highly modular and flexible manner.
112 *
113 * The library is free for all purposes without any express
114 * guarantee it works.
115 *
116 * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
117 */
118
119
120 /* SHA512 by Tom St Denis */
121
122 /* Various logical functions */
123 #define ROR64(x, y) \
124 ( ((((x) & Py_ULL(0xFFFFFFFFFFFFFFFF))>>((unsigned PY_LONG_LONG)(y) & 63)) | \
125 ((x)<<((unsigned PY_LONG_LONG)(64-((y) & 63))))) & Py_ULL(0xFFFFFFFFFFFFFFFF))
126 #define Ch(x,y,z) (z ^ (x & (y ^ z)))
127 #define Maj(x,y,z) (((x | y) & z) | (x & y))
128 #define S(x, n) ROR64((x),(n))
129 #define R(x, n) (((x) & Py_ULL(0xFFFFFFFFFFFFFFFF)) >> ((unsigned PY_LONG_LONG)n))
130 #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39))
131 #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41))
132 #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7))
133 #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6))
134
135
136 static void
sha512_transform(SHAobject * sha_info)137 sha512_transform(SHAobject *sha_info)
138 {
139 int i;
140 SHA_INT64 S[8], W[80], t0, t1;
141
142 memcpy(W, sha_info->data, sizeof(sha_info->data));
143 longReverse(W, (int)sizeof(sha_info->data), sha_info->Endianness);
144
145 for (i = 16; i < 80; ++i) {
146 W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
147 }
148 for (i = 0; i < 8; ++i) {
149 S[i] = sha_info->digest[i];
150 }
151
152 /* Compress */
153 #define RND(a,b,c,d,e,f,g,h,i,ki) \
154 t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
155 t1 = Sigma0(a) + Maj(a, b, c); \
156 d += t0; \
157 h = t0 + t1;
158
159 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,Py_ULL(0x428a2f98d728ae22));
160 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,Py_ULL(0x7137449123ef65cd));
161 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,Py_ULL(0xb5c0fbcfec4d3b2f));
162 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,Py_ULL(0xe9b5dba58189dbbc));
163 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,Py_ULL(0x3956c25bf348b538));
164 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,Py_ULL(0x59f111f1b605d019));
165 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,Py_ULL(0x923f82a4af194f9b));
166 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,Py_ULL(0xab1c5ed5da6d8118));
167 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,Py_ULL(0xd807aa98a3030242));
168 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,Py_ULL(0x12835b0145706fbe));
169 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,Py_ULL(0x243185be4ee4b28c));
170 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,Py_ULL(0x550c7dc3d5ffb4e2));
171 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,Py_ULL(0x72be5d74f27b896f));
172 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,Py_ULL(0x80deb1fe3b1696b1));
173 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,Py_ULL(0x9bdc06a725c71235));
174 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,Py_ULL(0xc19bf174cf692694));
175 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,Py_ULL(0xe49b69c19ef14ad2));
176 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,Py_ULL(0xefbe4786384f25e3));
177 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,Py_ULL(0x0fc19dc68b8cd5b5));
178 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,Py_ULL(0x240ca1cc77ac9c65));
179 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,Py_ULL(0x2de92c6f592b0275));
180 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,Py_ULL(0x4a7484aa6ea6e483));
181 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,Py_ULL(0x5cb0a9dcbd41fbd4));
182 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,Py_ULL(0x76f988da831153b5));
183 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,Py_ULL(0x983e5152ee66dfab));
184 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,Py_ULL(0xa831c66d2db43210));
185 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,Py_ULL(0xb00327c898fb213f));
186 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,Py_ULL(0xbf597fc7beef0ee4));
187 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,Py_ULL(0xc6e00bf33da88fc2));
188 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,Py_ULL(0xd5a79147930aa725));
189 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,Py_ULL(0x06ca6351e003826f));
190 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,Py_ULL(0x142929670a0e6e70));
191 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,Py_ULL(0x27b70a8546d22ffc));
192 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,Py_ULL(0x2e1b21385c26c926));
193 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,Py_ULL(0x4d2c6dfc5ac42aed));
194 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,Py_ULL(0x53380d139d95b3df));
195 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,Py_ULL(0x650a73548baf63de));
196 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,Py_ULL(0x766a0abb3c77b2a8));
197 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,Py_ULL(0x81c2c92e47edaee6));
198 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,Py_ULL(0x92722c851482353b));
199 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,Py_ULL(0xa2bfe8a14cf10364));
200 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,Py_ULL(0xa81a664bbc423001));
201 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,Py_ULL(0xc24b8b70d0f89791));
202 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,Py_ULL(0xc76c51a30654be30));
203 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,Py_ULL(0xd192e819d6ef5218));
204 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,Py_ULL(0xd69906245565a910));
205 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,Py_ULL(0xf40e35855771202a));
206 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,Py_ULL(0x106aa07032bbd1b8));
207 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,Py_ULL(0x19a4c116b8d2d0c8));
208 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,Py_ULL(0x1e376c085141ab53));
209 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,Py_ULL(0x2748774cdf8eeb99));
210 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,Py_ULL(0x34b0bcb5e19b48a8));
211 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,Py_ULL(0x391c0cb3c5c95a63));
212 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,Py_ULL(0x4ed8aa4ae3418acb));
213 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,Py_ULL(0x5b9cca4f7763e373));
214 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,Py_ULL(0x682e6ff3d6b2b8a3));
215 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,Py_ULL(0x748f82ee5defb2fc));
216 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,Py_ULL(0x78a5636f43172f60));
217 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,Py_ULL(0x84c87814a1f0ab72));
218 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,Py_ULL(0x8cc702081a6439ec));
219 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,Py_ULL(0x90befffa23631e28));
220 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,Py_ULL(0xa4506cebde82bde9));
221 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,Py_ULL(0xbef9a3f7b2c67915));
222 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,Py_ULL(0xc67178f2e372532b));
223 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],64,Py_ULL(0xca273eceea26619c));
224 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],65,Py_ULL(0xd186b8c721c0c207));
225 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],66,Py_ULL(0xeada7dd6cde0eb1e));
226 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],67,Py_ULL(0xf57d4f7fee6ed178));
227 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],68,Py_ULL(0x06f067aa72176fba));
228 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],69,Py_ULL(0x0a637dc5a2c898a6));
229 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],70,Py_ULL(0x113f9804bef90dae));
230 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],71,Py_ULL(0x1b710b35131c471b));
231 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],72,Py_ULL(0x28db77f523047d84));
232 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],73,Py_ULL(0x32caab7b40c72493));
233 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],74,Py_ULL(0x3c9ebe0a15c9bebc));
234 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],75,Py_ULL(0x431d67c49c100d4c));
235 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],76,Py_ULL(0x4cc5d4becb3e42b6));
236 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],77,Py_ULL(0x597f299cfc657e2a));
237 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],78,Py_ULL(0x5fcb6fab3ad6faec));
238 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],79,Py_ULL(0x6c44198c4a475817));
239
240 #undef RND
241
242 /* feedback */
243 for (i = 0; i < 8; i++) {
244 sha_info->digest[i] = sha_info->digest[i] + S[i];
245 }
246
247 }
248
249
250
251 /* initialize the SHA digest */
252
253 static void
sha512_init(SHAobject * sha_info)254 sha512_init(SHAobject *sha_info)
255 {
256 TestEndianness(sha_info->Endianness)
257 sha_info->digest[0] = Py_ULL(0x6a09e667f3bcc908);
258 sha_info->digest[1] = Py_ULL(0xbb67ae8584caa73b);
259 sha_info->digest[2] = Py_ULL(0x3c6ef372fe94f82b);
260 sha_info->digest[3] = Py_ULL(0xa54ff53a5f1d36f1);
261 sha_info->digest[4] = Py_ULL(0x510e527fade682d1);
262 sha_info->digest[5] = Py_ULL(0x9b05688c2b3e6c1f);
263 sha_info->digest[6] = Py_ULL(0x1f83d9abfb41bd6b);
264 sha_info->digest[7] = Py_ULL(0x5be0cd19137e2179);
265 sha_info->count_lo = 0L;
266 sha_info->count_hi = 0L;
267 sha_info->local = 0;
268 sha_info->digestsize = 64;
269 }
270
271 static void
sha384_init(SHAobject * sha_info)272 sha384_init(SHAobject *sha_info)
273 {
274 TestEndianness(sha_info->Endianness)
275 sha_info->digest[0] = Py_ULL(0xcbbb9d5dc1059ed8);
276 sha_info->digest[1] = Py_ULL(0x629a292a367cd507);
277 sha_info->digest[2] = Py_ULL(0x9159015a3070dd17);
278 sha_info->digest[3] = Py_ULL(0x152fecd8f70e5939);
279 sha_info->digest[4] = Py_ULL(0x67332667ffc00b31);
280 sha_info->digest[5] = Py_ULL(0x8eb44a8768581511);
281 sha_info->digest[6] = Py_ULL(0xdb0c2e0d64f98fa7);
282 sha_info->digest[7] = Py_ULL(0x47b5481dbefa4fa4);
283 sha_info->count_lo = 0L;
284 sha_info->count_hi = 0L;
285 sha_info->local = 0;
286 sha_info->digestsize = 48;
287 }
288
289
290 /* update the SHA digest */
291
292 static void
sha512_update(SHAobject * sha_info,SHA_BYTE * buffer,int count)293 sha512_update(SHAobject *sha_info, SHA_BYTE *buffer, int count)
294 {
295 int i;
296 SHA_INT32 clo;
297
298 clo = sha_info->count_lo + ((SHA_INT32) count << 3);
299 if (clo < sha_info->count_lo) {
300 ++sha_info->count_hi;
301 }
302 sha_info->count_lo = clo;
303 sha_info->count_hi += (SHA_INT32) count >> 29;
304 if (sha_info->local) {
305 i = SHA_BLOCKSIZE - sha_info->local;
306 if (i > count) {
307 i = count;
308 }
309 memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
310 count -= i;
311 buffer += i;
312 sha_info->local += i;
313 if (sha_info->local == SHA_BLOCKSIZE) {
314 sha512_transform(sha_info);
315 }
316 else {
317 return;
318 }
319 }
320 while (count >= SHA_BLOCKSIZE) {
321 memcpy(sha_info->data, buffer, SHA_BLOCKSIZE);
322 buffer += SHA_BLOCKSIZE;
323 count -= SHA_BLOCKSIZE;
324 sha512_transform(sha_info);
325 }
326 memcpy(sha_info->data, buffer, count);
327 sha_info->local = count;
328 }
329
330 /* finish computing the SHA digest */
331
332 static void
sha512_final(unsigned char digest[SHA_DIGESTSIZE],SHAobject * sha_info)333 sha512_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info)
334 {
335 int count;
336 SHA_INT32 lo_bit_count, hi_bit_count;
337
338 lo_bit_count = sha_info->count_lo;
339 hi_bit_count = sha_info->count_hi;
340 count = (int) ((lo_bit_count >> 3) & 0x7f);
341 ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
342 if (count > SHA_BLOCKSIZE - 16) {
343 memset(((SHA_BYTE *) sha_info->data) + count, 0,
344 SHA_BLOCKSIZE - count);
345 sha512_transform(sha_info);
346 memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 16);
347 }
348 else {
349 memset(((SHA_BYTE *) sha_info->data) + count, 0,
350 SHA_BLOCKSIZE - 16 - count);
351 }
352
353 /* GJS: note that we add the hi/lo in big-endian. sha512_transform will
354 swap these values into host-order. */
355 sha_info->data[112] = 0;
356 sha_info->data[113] = 0;
357 sha_info->data[114] = 0;
358 sha_info->data[115] = 0;
359 sha_info->data[116] = 0;
360 sha_info->data[117] = 0;
361 sha_info->data[118] = 0;
362 sha_info->data[119] = 0;
363 sha_info->data[120] = (hi_bit_count >> 24) & 0xff;
364 sha_info->data[121] = (hi_bit_count >> 16) & 0xff;
365 sha_info->data[122] = (hi_bit_count >> 8) & 0xff;
366 sha_info->data[123] = (hi_bit_count >> 0) & 0xff;
367 sha_info->data[124] = (lo_bit_count >> 24) & 0xff;
368 sha_info->data[125] = (lo_bit_count >> 16) & 0xff;
369 sha_info->data[126] = (lo_bit_count >> 8) & 0xff;
370 sha_info->data[127] = (lo_bit_count >> 0) & 0xff;
371 sha512_transform(sha_info);
372 digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 56) & 0xff);
373 digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 48) & 0xff);
374 digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 40) & 0xff);
375 digest[ 3] = (unsigned char) ((sha_info->digest[0] >> 32) & 0xff);
376 digest[ 4] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
377 digest[ 5] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
378 digest[ 6] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
379 digest[ 7] = (unsigned char) ((sha_info->digest[0] ) & 0xff);
380 digest[ 8] = (unsigned char) ((sha_info->digest[1] >> 56) & 0xff);
381 digest[ 9] = (unsigned char) ((sha_info->digest[1] >> 48) & 0xff);
382 digest[10] = (unsigned char) ((sha_info->digest[1] >> 40) & 0xff);
383 digest[11] = (unsigned char) ((sha_info->digest[1] >> 32) & 0xff);
384 digest[12] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
385 digest[13] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
386 digest[14] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
387 digest[15] = (unsigned char) ((sha_info->digest[1] ) & 0xff);
388 digest[16] = (unsigned char) ((sha_info->digest[2] >> 56) & 0xff);
389 digest[17] = (unsigned char) ((sha_info->digest[2] >> 48) & 0xff);
390 digest[18] = (unsigned char) ((sha_info->digest[2] >> 40) & 0xff);
391 digest[19] = (unsigned char) ((sha_info->digest[2] >> 32) & 0xff);
392 digest[20] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
393 digest[21] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
394 digest[22] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
395 digest[23] = (unsigned char) ((sha_info->digest[2] ) & 0xff);
396 digest[24] = (unsigned char) ((sha_info->digest[3] >> 56) & 0xff);
397 digest[25] = (unsigned char) ((sha_info->digest[3] >> 48) & 0xff);
398 digest[26] = (unsigned char) ((sha_info->digest[3] >> 40) & 0xff);
399 digest[27] = (unsigned char) ((sha_info->digest[3] >> 32) & 0xff);
400 digest[28] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
401 digest[29] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
402 digest[30] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
403 digest[31] = (unsigned char) ((sha_info->digest[3] ) & 0xff);
404 digest[32] = (unsigned char) ((sha_info->digest[4] >> 56) & 0xff);
405 digest[33] = (unsigned char) ((sha_info->digest[4] >> 48) & 0xff);
406 digest[34] = (unsigned char) ((sha_info->digest[4] >> 40) & 0xff);
407 digest[35] = (unsigned char) ((sha_info->digest[4] >> 32) & 0xff);
408 digest[36] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
409 digest[37] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
410 digest[38] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
411 digest[39] = (unsigned char) ((sha_info->digest[4] ) & 0xff);
412 digest[40] = (unsigned char) ((sha_info->digest[5] >> 56) & 0xff);
413 digest[41] = (unsigned char) ((sha_info->digest[5] >> 48) & 0xff);
414 digest[42] = (unsigned char) ((sha_info->digest[5] >> 40) & 0xff);
415 digest[43] = (unsigned char) ((sha_info->digest[5] >> 32) & 0xff);
416 digest[44] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff);
417 digest[45] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff);
418 digest[46] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff);
419 digest[47] = (unsigned char) ((sha_info->digest[5] ) & 0xff);
420 digest[48] = (unsigned char) ((sha_info->digest[6] >> 56) & 0xff);
421 digest[49] = (unsigned char) ((sha_info->digest[6] >> 48) & 0xff);
422 digest[50] = (unsigned char) ((sha_info->digest[6] >> 40) & 0xff);
423 digest[51] = (unsigned char) ((sha_info->digest[6] >> 32) & 0xff);
424 digest[52] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff);
425 digest[53] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff);
426 digest[54] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff);
427 digest[55] = (unsigned char) ((sha_info->digest[6] ) & 0xff);
428 digest[56] = (unsigned char) ((sha_info->digest[7] >> 56) & 0xff);
429 digest[57] = (unsigned char) ((sha_info->digest[7] >> 48) & 0xff);
430 digest[58] = (unsigned char) ((sha_info->digest[7] >> 40) & 0xff);
431 digest[59] = (unsigned char) ((sha_info->digest[7] >> 32) & 0xff);
432 digest[60] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff);
433 digest[61] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff);
434 digest[62] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff);
435 digest[63] = (unsigned char) ((sha_info->digest[7] ) & 0xff);
436 }
437
438 /*
439 * End of copied SHA code.
440 *
441 * ------------------------------------------------------------------------
442 */
443
444 static PyTypeObject SHA384type;
445 static PyTypeObject SHA512type;
446
447
448 static SHAobject *
newSHA384object(void)449 newSHA384object(void)
450 {
451 return (SHAobject *)PyObject_New(SHAobject, &SHA384type);
452 }
453
454 static SHAobject *
newSHA512object(void)455 newSHA512object(void)
456 {
457 return (SHAobject *)PyObject_New(SHAobject, &SHA512type);
458 }
459
460 /* Internal methods for a hash object */
461
462 static void
SHA512_dealloc(PyObject * ptr)463 SHA512_dealloc(PyObject *ptr)
464 {
465 PyObject_Del(ptr);
466 }
467
468
469 /* External methods for a hash object */
470
471 PyDoc_STRVAR(SHA512_copy__doc__, "Return a copy of the hash object.");
472
473 static PyObject *
SHA512_copy(SHAobject * self,PyObject * unused)474 SHA512_copy(SHAobject *self, PyObject *unused)
475 {
476 SHAobject *newobj;
477
478 if (((PyObject*)self)->ob_type == &SHA512type) {
479 if ( (newobj = newSHA512object())==NULL)
480 return NULL;
481 } else {
482 if ( (newobj = newSHA384object())==NULL)
483 return NULL;
484 }
485
486 SHAcopy(self, newobj);
487 return (PyObject *)newobj;
488 }
489
490 PyDoc_STRVAR(SHA512_digest__doc__,
491 "Return the digest value as a string of binary data.");
492
493 static PyObject *
SHA512_digest(SHAobject * self,PyObject * unused)494 SHA512_digest(SHAobject *self, PyObject *unused)
495 {
496 unsigned char digest[SHA_DIGESTSIZE];
497 SHAobject temp;
498
499 SHAcopy(self, &temp);
500 sha512_final(digest, &temp);
501 return PyString_FromStringAndSize((const char *)digest, self->digestsize);
502 }
503
504 PyDoc_STRVAR(SHA512_hexdigest__doc__,
505 "Return the digest value as a string of hexadecimal digits.");
506
507 static PyObject *
SHA512_hexdigest(SHAobject * self,PyObject * unused)508 SHA512_hexdigest(SHAobject *self, PyObject *unused)
509 {
510 unsigned char digest[SHA_DIGESTSIZE];
511 SHAobject temp;
512 PyObject *retval;
513 char *hex_digest;
514 int i, j;
515
516 /* Get the raw (binary) digest value */
517 SHAcopy(self, &temp);
518 sha512_final(digest, &temp);
519
520 /* Create a new string */
521 retval = PyString_FromStringAndSize(NULL, self->digestsize * 2);
522 if (!retval)
523 return NULL;
524 hex_digest = PyString_AsString(retval);
525 if (!hex_digest) {
526 Py_DECREF(retval);
527 return NULL;
528 }
529
530 /* Make hex version of the digest */
531 for (i=j=0; i<self->digestsize; i++) {
532 char c;
533 c = (digest[i] >> 4) & 0xf;
534 c = (c>9) ? c+'a'-10 : c + '0';
535 hex_digest[j++] = c;
536 c = (digest[i] & 0xf);
537 c = (c>9) ? c+'a'-10 : c + '0';
538 hex_digest[j++] = c;
539 }
540 return retval;
541 }
542
543 PyDoc_STRVAR(SHA512_update__doc__,
544 "Update this hash object's state with the provided string.");
545
546 static PyObject *
SHA512_update(SHAobject * self,PyObject * args)547 SHA512_update(SHAobject *self, PyObject *args)
548 {
549 Py_buffer buf;
550
551 if (!PyArg_ParseTuple(args, "s*:update", &buf))
552 return NULL;
553
554 sha512_update(self, buf.buf, buf.len);
555
556 PyBuffer_Release(&buf);
557 Py_RETURN_NONE;
558 }
559
560 static PyMethodDef SHA_methods[] = {
561 {"copy", (PyCFunction)SHA512_copy, METH_NOARGS, SHA512_copy__doc__},
562 {"digest", (PyCFunction)SHA512_digest, METH_NOARGS, SHA512_digest__doc__},
563 {"hexdigest", (PyCFunction)SHA512_hexdigest, METH_NOARGS, SHA512_hexdigest__doc__},
564 {"update", (PyCFunction)SHA512_update, METH_VARARGS, SHA512_update__doc__},
565 {NULL, NULL} /* sentinel */
566 };
567
568 static PyObject *
SHA512_get_block_size(PyObject * self,void * closure)569 SHA512_get_block_size(PyObject *self, void *closure)
570 {
571 return PyInt_FromLong(SHA_BLOCKSIZE);
572 }
573
574 static PyObject *
SHA512_get_name(PyObject * self,void * closure)575 SHA512_get_name(PyObject *self, void *closure)
576 {
577 if (((SHAobject *)self)->digestsize == 64)
578 return PyString_FromStringAndSize("SHA512", 6);
579 else
580 return PyString_FromStringAndSize("SHA384", 6);
581 }
582
583 static PyGetSetDef SHA_getseters[] = {
584 {"block_size",
585 (getter)SHA512_get_block_size, NULL,
586 NULL,
587 NULL},
588 {"name",
589 (getter)SHA512_get_name, NULL,
590 NULL,
591 NULL},
592 {NULL} /* Sentinel */
593 };
594
595 static PyMemberDef SHA_members[] = {
596 {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
597 /* the old md5 and sha modules support 'digest_size' as in PEP 247.
598 * the old sha module also supported 'digestsize'. ugh. */
599 {"digestsize", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
600 {NULL} /* Sentinel */
601 };
602
603 static PyTypeObject SHA384type = {
604 PyVarObject_HEAD_INIT(NULL, 0)
605 "_sha512.sha384", /*tp_name*/
606 sizeof(SHAobject), /*tp_size*/
607 0, /*tp_itemsize*/
608 /* methods */
609 SHA512_dealloc, /*tp_dealloc*/
610 0, /*tp_print*/
611 0, /*tp_getattr*/
612 0, /*tp_setattr*/
613 0, /*tp_compare*/
614 0, /*tp_repr*/
615 0, /*tp_as_number*/
616 0, /*tp_as_sequence*/
617 0, /*tp_as_mapping*/
618 0, /*tp_hash*/
619 0, /*tp_call*/
620 0, /*tp_str*/
621 0, /*tp_getattro*/
622 0, /*tp_setattro*/
623 0, /*tp_as_buffer*/
624 Py_TPFLAGS_DEFAULT, /*tp_flags*/
625 0, /*tp_doc*/
626 0, /*tp_traverse*/
627 0, /*tp_clear*/
628 0, /*tp_richcompare*/
629 0, /*tp_weaklistoffset*/
630 0, /*tp_iter*/
631 0, /*tp_iternext*/
632 SHA_methods, /* tp_methods */
633 SHA_members, /* tp_members */
634 SHA_getseters, /* tp_getset */
635 };
636
637 static PyTypeObject SHA512type = {
638 PyVarObject_HEAD_INIT(NULL, 0)
639 "_sha512.sha512", /*tp_name*/
640 sizeof(SHAobject), /*tp_size*/
641 0, /*tp_itemsize*/
642 /* methods */
643 SHA512_dealloc, /*tp_dealloc*/
644 0, /*tp_print*/
645 0, /*tp_getattr*/
646 0, /*tp_setattr*/
647 0, /*tp_compare*/
648 0, /*tp_repr*/
649 0, /*tp_as_number*/
650 0, /*tp_as_sequence*/
651 0, /*tp_as_mapping*/
652 0, /*tp_hash*/
653 0, /*tp_call*/
654 0, /*tp_str*/
655 0, /*tp_getattro*/
656 0, /*tp_setattro*/
657 0, /*tp_as_buffer*/
658 Py_TPFLAGS_DEFAULT, /*tp_flags*/
659 0, /*tp_doc*/
660 0, /*tp_traverse*/
661 0, /*tp_clear*/
662 0, /*tp_richcompare*/
663 0, /*tp_weaklistoffset*/
664 0, /*tp_iter*/
665 0, /*tp_iternext*/
666 SHA_methods, /* tp_methods */
667 SHA_members, /* tp_members */
668 SHA_getseters, /* tp_getset */
669 };
670
671
672 /* The single module-level function: new() */
673
674 PyDoc_STRVAR(SHA512_new__doc__,
675 "Return a new SHA-512 hash object; optionally initialized with a string.");
676
677 static PyObject *
SHA512_new(PyObject * self,PyObject * args,PyObject * kwdict)678 SHA512_new(PyObject *self, PyObject *args, PyObject *kwdict)
679 {
680 static char *kwlist[] = {"string", NULL};
681 SHAobject *new;
682 Py_buffer buf = { 0 };
683
684 if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s*:new", kwlist,
685 &buf)) {
686 return NULL;
687 }
688
689 if ((new = newSHA512object()) == NULL) {
690 PyBuffer_Release(&buf);
691 return NULL;
692 }
693
694 sha512_init(new);
695
696 if (PyErr_Occurred()) {
697 Py_DECREF(new);
698 PyBuffer_Release(&buf);
699 return NULL;
700 }
701 if (buf.len > 0) {
702 sha512_update(new, buf.buf, buf.len);
703 }
704 PyBuffer_Release(&buf);
705
706 return (PyObject *)new;
707 }
708
709 PyDoc_STRVAR(SHA384_new__doc__,
710 "Return a new SHA-384 hash object; optionally initialized with a string.");
711
712 static PyObject *
SHA384_new(PyObject * self,PyObject * args,PyObject * kwdict)713 SHA384_new(PyObject *self, PyObject *args, PyObject *kwdict)
714 {
715 static char *kwlist[] = {"string", NULL};
716 SHAobject *new;
717 Py_buffer buf = { 0 };
718
719 if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s*:new", kwlist,
720 &buf)) {
721 return NULL;
722 }
723
724 if ((new = newSHA384object()) == NULL) {
725 PyBuffer_Release(&buf);
726 return NULL;
727 }
728
729 sha384_init(new);
730
731 if (PyErr_Occurred()) {
732 Py_DECREF(new);
733 PyBuffer_Release(&buf);
734 return NULL;
735 }
736 if (buf.len > 0) {
737 sha512_update(new, buf.buf, buf.len);
738 }
739 PyBuffer_Release(&buf);
740
741 return (PyObject *)new;
742 }
743
744
745 /* List of functions exported by this module */
746
747 static struct PyMethodDef SHA_functions[] = {
748 {"sha512", (PyCFunction)SHA512_new, METH_VARARGS|METH_KEYWORDS, SHA512_new__doc__},
749 {"sha384", (PyCFunction)SHA384_new, METH_VARARGS|METH_KEYWORDS, SHA384_new__doc__},
750 {NULL, NULL} /* Sentinel */
751 };
752
753
754 /* Initialize this module. */
755
756 #define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
757
758 PyMODINIT_FUNC
init_sha512(void)759 init_sha512(void)
760 {
761 PyObject *m;
762
763 Py_TYPE(&SHA384type) = &PyType_Type;
764 if (PyType_Ready(&SHA384type) < 0)
765 return;
766 Py_TYPE(&SHA512type) = &PyType_Type;
767 if (PyType_Ready(&SHA512type) < 0)
768 return;
769 m = Py_InitModule("_sha512", SHA_functions);
770 if (m == NULL)
771 return;
772 }
773
774 #endif
775