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) 2005-2007 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 "pycore_byteswap.h" // _Py_bswap32()
21 #include "structmember.h" // PyMemberDef
22 #include "hashlib.h"
23 #include "pystrhex.h"
24
25 /*[clinic input]
26 module _sha512
27 class SHA512Type "SHAobject *" "&PyType_Type"
28 [clinic start generated code]*/
29 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=81a3ccde92bcfe8d]*/
30
31 /* Some useful types */
32
33 typedef unsigned char SHA_BYTE;
34 typedef uint32_t SHA_INT32; /* 32-bit integer */
35 typedef uint64_t SHA_INT64; /* 64-bit integer */
36
37 /* The SHA block size and message digest sizes, in bytes */
38
39 #define SHA_BLOCKSIZE 128
40 #define SHA_DIGESTSIZE 64
41
42 /* The structure for storing SHA info */
43
44 typedef struct {
45 PyObject_HEAD
46 SHA_INT64 digest[8]; /* Message digest */
47 SHA_INT32 count_lo, count_hi; /* 64-bit bit count */
48 SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */
49 int local; /* unprocessed amount in data */
50 int digestsize;
51 } SHAobject;
52
53 #include "clinic/sha512module.c.h"
54
55 /* When run on a little-endian CPU we need to perform byte reversal on an
56 array of longwords. */
57
58 #if PY_LITTLE_ENDIAN
longReverse(SHA_INT64 * buffer,int byteCount)59 static void longReverse(SHA_INT64 *buffer, int byteCount)
60 {
61 byteCount /= sizeof(*buffer);
62 for (; byteCount--; buffer++) {
63 *buffer = _Py_bswap64(*buffer);
64 }
65 }
66 #endif
67
SHAcopy(SHAobject * src,SHAobject * dest)68 static void SHAcopy(SHAobject *src, SHAobject *dest)
69 {
70 dest->local = src->local;
71 dest->digestsize = src->digestsize;
72 dest->count_lo = src->count_lo;
73 dest->count_hi = src->count_hi;
74 memcpy(dest->digest, src->digest, sizeof(src->digest));
75 memcpy(dest->data, src->data, sizeof(src->data));
76 }
77
78
79 /* ------------------------------------------------------------------------
80 *
81 * This code for the SHA-512 algorithm was noted as public domain. The
82 * original headers are pasted below.
83 *
84 * Several changes have been made to make it more compatible with the
85 * Python environment and desired interface.
86 *
87 */
88
89 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
90 *
91 * LibTomCrypt is a library that provides various cryptographic
92 * algorithms in a highly modular and flexible manner.
93 *
94 * The library is free for all purposes without any express
95 * guarantee it works.
96 *
97 * Tom St Denis, tomstdenis@iahu.ca, https://www.libtom.net
98 */
99
100
101 /* SHA512 by Tom St Denis */
102
103 /* Various logical functions */
104 #define ROR64(x, y) \
105 ( ((((x) & 0xFFFFFFFFFFFFFFFFULL)>>((unsigned long long)(y) & 63)) | \
106 ((x)<<((unsigned long long)(64-((y) & 63))))) & 0xFFFFFFFFFFFFFFFFULL)
107 #define Ch(x,y,z) (z ^ (x & (y ^ z)))
108 #define Maj(x,y,z) (((x | y) & z) | (x & y))
109 #define S(x, n) ROR64((x),(n))
110 #define R(x, n) (((x) & 0xFFFFFFFFFFFFFFFFULL) >> ((unsigned long long)n))
111 #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39))
112 #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41))
113 #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7))
114 #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6))
115
116
117 static void
sha512_transform(SHAobject * sha_info)118 sha512_transform(SHAobject *sha_info)
119 {
120 int i;
121 SHA_INT64 S[8], W[80], t0, t1;
122
123 memcpy(W, sha_info->data, sizeof(sha_info->data));
124 #if PY_LITTLE_ENDIAN
125 longReverse(W, (int)sizeof(sha_info->data));
126 #endif
127
128 for (i = 16; i < 80; ++i) {
129 W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
130 }
131 for (i = 0; i < 8; ++i) {
132 S[i] = sha_info->digest[i];
133 }
134
135 /* Compress */
136 #define RND(a,b,c,d,e,f,g,h,i,ki) \
137 t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
138 t1 = Sigma0(a) + Maj(a, b, c); \
139 d += t0; \
140 h = t0 + t1;
141
142 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98d728ae22ULL);
143 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x7137449123ef65cdULL);
144 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcfec4d3b2fULL);
145 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba58189dbbcULL);
146 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25bf348b538ULL);
147 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1b605d019ULL);
148 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4af194f9bULL);
149 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5da6d8118ULL);
150 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98a3030242ULL);
151 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b0145706fbeULL);
152 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be4ee4b28cULL);
153 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3d5ffb4e2ULL);
154 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74f27b896fULL);
155 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe3b1696b1ULL);
156 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a725c71235ULL);
157 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174cf692694ULL);
158 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c19ef14ad2ULL);
159 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786384f25e3ULL);
160 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc68b8cd5b5ULL);
161 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc77ac9c65ULL);
162 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f592b0275ULL);
163 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa6ea6e483ULL);
164 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dcbd41fbd4ULL);
165 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da831153b5ULL);
166 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152ee66dfabULL);
167 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d2db43210ULL);
168 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c898fb213fULL);
169 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7beef0ee4ULL);
170 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf33da88fc2ULL);
171 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147930aa725ULL);
172 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351e003826fULL);
173 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x142929670a0e6e70ULL);
174 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a8546d22ffcULL);
175 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b21385c26c926ULL);
176 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc5ac42aedULL);
177 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d139d95b3dfULL);
178 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a73548baf63deULL);
179 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb3c77b2a8ULL);
180 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e47edaee6ULL);
181 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c851482353bULL);
182 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a14cf10364ULL);
183 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664bbc423001ULL);
184 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70d0f89791ULL);
185 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a30654be30ULL);
186 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819d6ef5218ULL);
187 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd69906245565a910ULL);
188 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e35855771202aULL);
189 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa07032bbd1b8ULL);
190 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116b8d2d0c8ULL);
191 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c085141ab53ULL);
192 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774cdf8eeb99ULL);
193 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5e19b48a8ULL);
194 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3c5c95a63ULL);
195 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4ae3418acbULL);
196 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f7763e373ULL);
197 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3d6b2b8a3ULL);
198 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee5defb2fcULL);
199 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f43172f60ULL);
200 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814a1f0ab72ULL);
201 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc702081a6439ecULL);
202 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa23631e28ULL);
203 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506cebde82bde9ULL);
204 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7b2c67915ULL);
205 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2e372532bULL);
206 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],64,0xca273eceea26619cULL);
207 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],65,0xd186b8c721c0c207ULL);
208 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],66,0xeada7dd6cde0eb1eULL);
209 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],67,0xf57d4f7fee6ed178ULL);
210 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],68,0x06f067aa72176fbaULL);
211 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],69,0x0a637dc5a2c898a6ULL);
212 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],70,0x113f9804bef90daeULL);
213 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],71,0x1b710b35131c471bULL);
214 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],72,0x28db77f523047d84ULL);
215 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],73,0x32caab7b40c72493ULL);
216 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],74,0x3c9ebe0a15c9bebcULL);
217 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],75,0x431d67c49c100d4cULL);
218 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],76,0x4cc5d4becb3e42b6ULL);
219 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],77,0x597f299cfc657e2aULL);
220 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],78,0x5fcb6fab3ad6faecULL);
221 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],79,0x6c44198c4a475817ULL);
222
223 #undef RND
224
225 /* feedback */
226 for (i = 0; i < 8; i++) {
227 sha_info->digest[i] = sha_info->digest[i] + S[i];
228 }
229
230 }
231
232
233
234 /* initialize the SHA digest */
235
236 static void
sha512_init(SHAobject * sha_info)237 sha512_init(SHAobject *sha_info)
238 {
239 sha_info->digest[0] = Py_ULL(0x6a09e667f3bcc908);
240 sha_info->digest[1] = Py_ULL(0xbb67ae8584caa73b);
241 sha_info->digest[2] = Py_ULL(0x3c6ef372fe94f82b);
242 sha_info->digest[3] = Py_ULL(0xa54ff53a5f1d36f1);
243 sha_info->digest[4] = Py_ULL(0x510e527fade682d1);
244 sha_info->digest[5] = Py_ULL(0x9b05688c2b3e6c1f);
245 sha_info->digest[6] = Py_ULL(0x1f83d9abfb41bd6b);
246 sha_info->digest[7] = Py_ULL(0x5be0cd19137e2179);
247 sha_info->count_lo = 0L;
248 sha_info->count_hi = 0L;
249 sha_info->local = 0;
250 sha_info->digestsize = 64;
251 }
252
253 static void
sha384_init(SHAobject * sha_info)254 sha384_init(SHAobject *sha_info)
255 {
256 sha_info->digest[0] = Py_ULL(0xcbbb9d5dc1059ed8);
257 sha_info->digest[1] = Py_ULL(0x629a292a367cd507);
258 sha_info->digest[2] = Py_ULL(0x9159015a3070dd17);
259 sha_info->digest[3] = Py_ULL(0x152fecd8f70e5939);
260 sha_info->digest[4] = Py_ULL(0x67332667ffc00b31);
261 sha_info->digest[5] = Py_ULL(0x8eb44a8768581511);
262 sha_info->digest[6] = Py_ULL(0xdb0c2e0d64f98fa7);
263 sha_info->digest[7] = Py_ULL(0x47b5481dbefa4fa4);
264 sha_info->count_lo = 0L;
265 sha_info->count_hi = 0L;
266 sha_info->local = 0;
267 sha_info->digestsize = 48;
268 }
269
270
271 /* update the SHA digest */
272
273 static void
sha512_update(SHAobject * sha_info,SHA_BYTE * buffer,Py_ssize_t count)274 sha512_update(SHAobject *sha_info, SHA_BYTE *buffer, Py_ssize_t count)
275 {
276 Py_ssize_t i;
277 SHA_INT32 clo;
278
279 clo = sha_info->count_lo + ((SHA_INT32) count << 3);
280 if (clo < sha_info->count_lo) {
281 ++sha_info->count_hi;
282 }
283 sha_info->count_lo = clo;
284 sha_info->count_hi += (SHA_INT32) count >> 29;
285 if (sha_info->local) {
286 i = SHA_BLOCKSIZE - sha_info->local;
287 if (i > count) {
288 i = count;
289 }
290 memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
291 count -= i;
292 buffer += i;
293 sha_info->local += (int)i;
294 if (sha_info->local == SHA_BLOCKSIZE) {
295 sha512_transform(sha_info);
296 }
297 else {
298 return;
299 }
300 }
301 while (count >= SHA_BLOCKSIZE) {
302 memcpy(sha_info->data, buffer, SHA_BLOCKSIZE);
303 buffer += SHA_BLOCKSIZE;
304 count -= SHA_BLOCKSIZE;
305 sha512_transform(sha_info);
306 }
307 memcpy(sha_info->data, buffer, count);
308 sha_info->local = (int)count;
309 }
310
311 /* finish computing the SHA digest */
312
313 static void
sha512_final(unsigned char digest[SHA_DIGESTSIZE],SHAobject * sha_info)314 sha512_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info)
315 {
316 int count;
317 SHA_INT32 lo_bit_count, hi_bit_count;
318
319 lo_bit_count = sha_info->count_lo;
320 hi_bit_count = sha_info->count_hi;
321 count = (int) ((lo_bit_count >> 3) & 0x7f);
322 ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
323 if (count > SHA_BLOCKSIZE - 16) {
324 memset(((SHA_BYTE *) sha_info->data) + count, 0,
325 SHA_BLOCKSIZE - count);
326 sha512_transform(sha_info);
327 memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 16);
328 }
329 else {
330 memset(((SHA_BYTE *) sha_info->data) + count, 0,
331 SHA_BLOCKSIZE - 16 - count);
332 }
333
334 /* GJS: note that we add the hi/lo in big-endian. sha512_transform will
335 swap these values into host-order. */
336 sha_info->data[112] = 0;
337 sha_info->data[113] = 0;
338 sha_info->data[114] = 0;
339 sha_info->data[115] = 0;
340 sha_info->data[116] = 0;
341 sha_info->data[117] = 0;
342 sha_info->data[118] = 0;
343 sha_info->data[119] = 0;
344 sha_info->data[120] = (hi_bit_count >> 24) & 0xff;
345 sha_info->data[121] = (hi_bit_count >> 16) & 0xff;
346 sha_info->data[122] = (hi_bit_count >> 8) & 0xff;
347 sha_info->data[123] = (hi_bit_count >> 0) & 0xff;
348 sha_info->data[124] = (lo_bit_count >> 24) & 0xff;
349 sha_info->data[125] = (lo_bit_count >> 16) & 0xff;
350 sha_info->data[126] = (lo_bit_count >> 8) & 0xff;
351 sha_info->data[127] = (lo_bit_count >> 0) & 0xff;
352 sha512_transform(sha_info);
353 digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 56) & 0xff);
354 digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 48) & 0xff);
355 digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 40) & 0xff);
356 digest[ 3] = (unsigned char) ((sha_info->digest[0] >> 32) & 0xff);
357 digest[ 4] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
358 digest[ 5] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
359 digest[ 6] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
360 digest[ 7] = (unsigned char) ((sha_info->digest[0] ) & 0xff);
361 digest[ 8] = (unsigned char) ((sha_info->digest[1] >> 56) & 0xff);
362 digest[ 9] = (unsigned char) ((sha_info->digest[1] >> 48) & 0xff);
363 digest[10] = (unsigned char) ((sha_info->digest[1] >> 40) & 0xff);
364 digest[11] = (unsigned char) ((sha_info->digest[1] >> 32) & 0xff);
365 digest[12] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
366 digest[13] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
367 digest[14] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
368 digest[15] = (unsigned char) ((sha_info->digest[1] ) & 0xff);
369 digest[16] = (unsigned char) ((sha_info->digest[2] >> 56) & 0xff);
370 digest[17] = (unsigned char) ((sha_info->digest[2] >> 48) & 0xff);
371 digest[18] = (unsigned char) ((sha_info->digest[2] >> 40) & 0xff);
372 digest[19] = (unsigned char) ((sha_info->digest[2] >> 32) & 0xff);
373 digest[20] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
374 digest[21] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
375 digest[22] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
376 digest[23] = (unsigned char) ((sha_info->digest[2] ) & 0xff);
377 digest[24] = (unsigned char) ((sha_info->digest[3] >> 56) & 0xff);
378 digest[25] = (unsigned char) ((sha_info->digest[3] >> 48) & 0xff);
379 digest[26] = (unsigned char) ((sha_info->digest[3] >> 40) & 0xff);
380 digest[27] = (unsigned char) ((sha_info->digest[3] >> 32) & 0xff);
381 digest[28] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
382 digest[29] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
383 digest[30] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
384 digest[31] = (unsigned char) ((sha_info->digest[3] ) & 0xff);
385 digest[32] = (unsigned char) ((sha_info->digest[4] >> 56) & 0xff);
386 digest[33] = (unsigned char) ((sha_info->digest[4] >> 48) & 0xff);
387 digest[34] = (unsigned char) ((sha_info->digest[4] >> 40) & 0xff);
388 digest[35] = (unsigned char) ((sha_info->digest[4] >> 32) & 0xff);
389 digest[36] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
390 digest[37] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
391 digest[38] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
392 digest[39] = (unsigned char) ((sha_info->digest[4] ) & 0xff);
393 digest[40] = (unsigned char) ((sha_info->digest[5] >> 56) & 0xff);
394 digest[41] = (unsigned char) ((sha_info->digest[5] >> 48) & 0xff);
395 digest[42] = (unsigned char) ((sha_info->digest[5] >> 40) & 0xff);
396 digest[43] = (unsigned char) ((sha_info->digest[5] >> 32) & 0xff);
397 digest[44] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff);
398 digest[45] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff);
399 digest[46] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff);
400 digest[47] = (unsigned char) ((sha_info->digest[5] ) & 0xff);
401 digest[48] = (unsigned char) ((sha_info->digest[6] >> 56) & 0xff);
402 digest[49] = (unsigned char) ((sha_info->digest[6] >> 48) & 0xff);
403 digest[50] = (unsigned char) ((sha_info->digest[6] >> 40) & 0xff);
404 digest[51] = (unsigned char) ((sha_info->digest[6] >> 32) & 0xff);
405 digest[52] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff);
406 digest[53] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff);
407 digest[54] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff);
408 digest[55] = (unsigned char) ((sha_info->digest[6] ) & 0xff);
409 digest[56] = (unsigned char) ((sha_info->digest[7] >> 56) & 0xff);
410 digest[57] = (unsigned char) ((sha_info->digest[7] >> 48) & 0xff);
411 digest[58] = (unsigned char) ((sha_info->digest[7] >> 40) & 0xff);
412 digest[59] = (unsigned char) ((sha_info->digest[7] >> 32) & 0xff);
413 digest[60] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff);
414 digest[61] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff);
415 digest[62] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff);
416 digest[63] = (unsigned char) ((sha_info->digest[7] ) & 0xff);
417 }
418
419 /*
420 * End of copied SHA code.
421 *
422 * ------------------------------------------------------------------------
423 */
424
425 static PyTypeObject SHA384type;
426 static PyTypeObject SHA512type;
427
428
429 static SHAobject *
newSHA384object(void)430 newSHA384object(void)
431 {
432 return (SHAobject *)PyObject_New(SHAobject, &SHA384type);
433 }
434
435 static SHAobject *
newSHA512object(void)436 newSHA512object(void)
437 {
438 return (SHAobject *)PyObject_New(SHAobject, &SHA512type);
439 }
440
441 /* Internal methods for a hash object */
442
443 static void
SHA512_dealloc(PyObject * ptr)444 SHA512_dealloc(PyObject *ptr)
445 {
446 PyObject_Del(ptr);
447 }
448
449
450 /* External methods for a hash object */
451
452 /*[clinic input]
453 SHA512Type.copy
454
455 Return a copy of the hash object.
456 [clinic start generated code]*/
457
458 static PyObject *
SHA512Type_copy_impl(SHAobject * self)459 SHA512Type_copy_impl(SHAobject *self)
460 /*[clinic end generated code: output=adea896ed3164821 input=9f5f31e6c457776a]*/
461 {
462 SHAobject *newobj;
463
464 if (Py_IS_TYPE((PyObject*)self, &SHA512type)) {
465 if ( (newobj = newSHA512object())==NULL)
466 return NULL;
467 } else {
468 if ( (newobj = newSHA384object())==NULL)
469 return NULL;
470 }
471
472 SHAcopy(self, newobj);
473 return (PyObject *)newobj;
474 }
475
476 /*[clinic input]
477 SHA512Type.digest
478
479 Return the digest value as a bytes object.
480 [clinic start generated code]*/
481
482 static PyObject *
SHA512Type_digest_impl(SHAobject * self)483 SHA512Type_digest_impl(SHAobject *self)
484 /*[clinic end generated code: output=1080bbeeef7dde1b input=f6470dd359071f4b]*/
485 {
486 unsigned char digest[SHA_DIGESTSIZE];
487 SHAobject temp;
488
489 SHAcopy(self, &temp);
490 sha512_final(digest, &temp);
491 return PyBytes_FromStringAndSize((const char *)digest, self->digestsize);
492 }
493
494 /*[clinic input]
495 SHA512Type.hexdigest
496
497 Return the digest value as a string of hexadecimal digits.
498 [clinic start generated code]*/
499
500 static PyObject *
SHA512Type_hexdigest_impl(SHAobject * self)501 SHA512Type_hexdigest_impl(SHAobject *self)
502 /*[clinic end generated code: output=7373305b8601e18b input=498b877b25cbe0a2]*/
503 {
504 unsigned char digest[SHA_DIGESTSIZE];
505 SHAobject temp;
506
507 /* Get the raw (binary) digest value */
508 SHAcopy(self, &temp);
509 sha512_final(digest, &temp);
510
511 return _Py_strhex((const char *)digest, self->digestsize);
512 }
513
514 /*[clinic input]
515 SHA512Type.update
516
517 obj: object
518 /
519
520 Update this hash object's state with the provided string.
521 [clinic start generated code]*/
522
523 static PyObject *
SHA512Type_update(SHAobject * self,PyObject * obj)524 SHA512Type_update(SHAobject *self, PyObject *obj)
525 /*[clinic end generated code: output=1cf333e73995a79e input=ded2b46656566283]*/
526 {
527 Py_buffer buf;
528
529 GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
530
531 sha512_update(self, buf.buf, buf.len);
532
533 PyBuffer_Release(&buf);
534 Py_RETURN_NONE;
535 }
536
537 static PyMethodDef SHA_methods[] = {
538 SHA512TYPE_COPY_METHODDEF
539 SHA512TYPE_DIGEST_METHODDEF
540 SHA512TYPE_HEXDIGEST_METHODDEF
541 SHA512TYPE_UPDATE_METHODDEF
542 {NULL, NULL} /* sentinel */
543 };
544
545 static PyObject *
SHA512_get_block_size(PyObject * self,void * closure)546 SHA512_get_block_size(PyObject *self, void *closure)
547 {
548 return PyLong_FromLong(SHA_BLOCKSIZE);
549 }
550
551 static PyObject *
SHA512_get_name(PyObject * self,void * closure)552 SHA512_get_name(PyObject *self, void *closure)
553 {
554 if (((SHAobject *)self)->digestsize == 64)
555 return PyUnicode_FromStringAndSize("sha512", 6);
556 else
557 return PyUnicode_FromStringAndSize("sha384", 6);
558 }
559
560 static PyGetSetDef SHA_getseters[] = {
561 {"block_size",
562 (getter)SHA512_get_block_size, NULL,
563 NULL,
564 NULL},
565 {"name",
566 (getter)SHA512_get_name, NULL,
567 NULL,
568 NULL},
569 {NULL} /* Sentinel */
570 };
571
572 static PyMemberDef SHA_members[] = {
573 {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
574 {NULL} /* Sentinel */
575 };
576
577 static PyTypeObject SHA384type = {
578 PyVarObject_HEAD_INIT(NULL, 0)
579 "_sha512.sha384", /*tp_name*/
580 sizeof(SHAobject), /*tp_basicsize*/
581 0, /*tp_itemsize*/
582 /* methods */
583 SHA512_dealloc, /*tp_dealloc*/
584 0, /*tp_vectorcall_offset*/
585 0, /*tp_getattr*/
586 0, /*tp_setattr*/
587 0, /*tp_as_async*/
588 0, /*tp_repr*/
589 0, /*tp_as_number*/
590 0, /*tp_as_sequence*/
591 0, /*tp_as_mapping*/
592 0, /*tp_hash*/
593 0, /*tp_call*/
594 0, /*tp_str*/
595 0, /*tp_getattro*/
596 0, /*tp_setattro*/
597 0, /*tp_as_buffer*/
598 Py_TPFLAGS_DEFAULT, /*tp_flags*/
599 0, /*tp_doc*/
600 0, /*tp_traverse*/
601 0, /*tp_clear*/
602 0, /*tp_richcompare*/
603 0, /*tp_weaklistoffset*/
604 0, /*tp_iter*/
605 0, /*tp_iternext*/
606 SHA_methods, /* tp_methods */
607 SHA_members, /* tp_members */
608 SHA_getseters, /* tp_getset */
609 };
610
611 static PyTypeObject SHA512type = {
612 PyVarObject_HEAD_INIT(NULL, 0)
613 "_sha512.sha512", /*tp_name*/
614 sizeof(SHAobject), /*tp_basicsize*/
615 0, /*tp_itemsize*/
616 /* methods */
617 SHA512_dealloc, /*tp_dealloc*/
618 0, /*tp_vectorcall_offset*/
619 0, /*tp_getattr*/
620 0, /*tp_setattr*/
621 0, /*tp_as_async*/
622 0, /*tp_repr*/
623 0, /*tp_as_number*/
624 0, /*tp_as_sequence*/
625 0, /*tp_as_mapping*/
626 0, /*tp_hash*/
627 0, /*tp_call*/
628 0, /*tp_str*/
629 0, /*tp_getattro*/
630 0, /*tp_setattro*/
631 0, /*tp_as_buffer*/
632 Py_TPFLAGS_DEFAULT, /*tp_flags*/
633 0, /*tp_doc*/
634 0, /*tp_traverse*/
635 0, /*tp_clear*/
636 0, /*tp_richcompare*/
637 0, /*tp_weaklistoffset*/
638 0, /*tp_iter*/
639 0, /*tp_iternext*/
640 SHA_methods, /* tp_methods */
641 SHA_members, /* tp_members */
642 SHA_getseters, /* tp_getset */
643 };
644
645
646 /* The single module-level function: new() */
647
648 /*[clinic input]
649 _sha512.sha512
650
651 string: object(c_default="NULL") = b''
652 *
653 usedforsecurity: bool = True
654
655 Return a new SHA-512 hash object; optionally initialized with a string.
656 [clinic start generated code]*/
657
658 static PyObject *
_sha512_sha512_impl(PyObject * module,PyObject * string,int usedforsecurity)659 _sha512_sha512_impl(PyObject *module, PyObject *string, int usedforsecurity)
660 /*[clinic end generated code: output=a8d9e5f9e6a0831c input=23b4daebc2ebb9c9]*/
661 {
662 SHAobject *new;
663 Py_buffer buf;
664
665 if (string)
666 GET_BUFFER_VIEW_OR_ERROUT(string, &buf);
667
668 if ((new = newSHA512object()) == NULL) {
669 if (string)
670 PyBuffer_Release(&buf);
671 return NULL;
672 }
673
674 sha512_init(new);
675
676 if (PyErr_Occurred()) {
677 Py_DECREF(new);
678 if (string)
679 PyBuffer_Release(&buf);
680 return NULL;
681 }
682 if (string) {
683 sha512_update(new, buf.buf, buf.len);
684 PyBuffer_Release(&buf);
685 }
686
687 return (PyObject *)new;
688 }
689
690 /*[clinic input]
691 _sha512.sha384
692
693 string: object(c_default="NULL") = b''
694 *
695 usedforsecurity: bool = True
696
697 Return a new SHA-384 hash object; optionally initialized with a string.
698 [clinic start generated code]*/
699
700 static PyObject *
_sha512_sha384_impl(PyObject * module,PyObject * string,int usedforsecurity)701 _sha512_sha384_impl(PyObject *module, PyObject *string, int usedforsecurity)
702 /*[clinic end generated code: output=da7d594a08027ac3 input=59ef72f039a6b431]*/
703 {
704 SHAobject *new;
705 Py_buffer buf;
706
707 if (string)
708 GET_BUFFER_VIEW_OR_ERROUT(string, &buf);
709
710 if ((new = newSHA384object()) == NULL) {
711 if (string)
712 PyBuffer_Release(&buf);
713 return NULL;
714 }
715
716 sha384_init(new);
717
718 if (PyErr_Occurred()) {
719 Py_DECREF(new);
720 if (string)
721 PyBuffer_Release(&buf);
722 return NULL;
723 }
724 if (string) {
725 sha512_update(new, buf.buf, buf.len);
726 PyBuffer_Release(&buf);
727 }
728
729 return (PyObject *)new;
730 }
731
732
733 /* List of functions exported by this module */
734
735 static struct PyMethodDef SHA_functions[] = {
736 _SHA512_SHA512_METHODDEF
737 _SHA512_SHA384_METHODDEF
738 {NULL, NULL} /* Sentinel */
739 };
740
741
742 /* Initialize this module. */
743
744 static struct PyModuleDef _sha512module = {
745 PyModuleDef_HEAD_INIT,
746 "_sha512",
747 NULL,
748 -1,
749 SHA_functions,
750 NULL,
751 NULL,
752 NULL,
753 NULL
754 };
755
756 PyMODINIT_FUNC
PyInit__sha512(void)757 PyInit__sha512(void)
758 {
759 PyObject *m;
760
761 Py_SET_TYPE(&SHA384type, &PyType_Type);
762 if (PyType_Ready(&SHA384type) < 0) {
763 return NULL;
764 }
765 Py_SET_TYPE(&SHA512type, &PyType_Type);
766 if (PyType_Ready(&SHA512type) < 0) {
767 return NULL;
768 }
769
770 m = PyModule_Create(&_sha512module);
771 if (m == NULL) {
772 return NULL;
773 }
774
775 Py_INCREF((PyObject *)&SHA384type);
776 PyModule_AddObject(m, "SHA384Type", (PyObject *)&SHA384type);
777 Py_INCREF((PyObject *)&SHA512type);
778 PyModule_AddObject(m, "SHA512Type", (PyObject *)&SHA512type);
779 return m;
780 }
781