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source: vbox/trunk/src/libs/openssl-3.1.2/crypto/evp/e_des3.c@ 101021

Last change on this file since 101021 was 101021, checked in by vboxsync, 15 months ago

openssl-3.1.2: Applied and adjusted our OpenSSL changes to 3.1.0. bugref:10519
File size: 13.9 KB
Line 
1/*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * DES low level APIs are deprecated for public use, but still ok for internal
12 * use.
13 */
14#include "internal/deprecated.h"
15
16#include <stdio.h>
17#include "internal/cryptlib.h"
18#ifndef OPENSSL_NO_DES
19# include <openssl/objects.h>
20# include "crypto/evp.h"
21# include "crypto/sha.h"
22# include <openssl/des.h>
23# include <openssl/rand.h>
24# include "evp_local.h"
25
26typedef struct {
27 union {
28 OSSL_UNION_ALIGN;
29 DES_key_schedule ks[3];
30 } ks;
31 union {
32 void (*cbc) (const void *, void *, size_t,
33 const DES_key_schedule *, unsigned char *);
34 } stream;
35} DES_EDE_KEY;
36# define ks1 ks.ks[0]
37# define ks2 ks.ks[1]
38# define ks3 ks.ks[2]
39
40# if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
41/* ---------^^^ this is not a typo, just a way to detect that
42 * assembler support was in general requested... */
43# include "crypto/sparc_arch.h"
44
45# define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
46
47void des_t4_key_expand(const void *key, DES_key_schedule *ks);
48void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
49 const DES_key_schedule ks[3], unsigned char iv[8]);
50void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
51 const DES_key_schedule ks[3], unsigned char iv[8]);
52# endif
53
54static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
55 const unsigned char *iv, int enc);
56
57static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
58 const unsigned char *iv, int enc);
59
60static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
61
62# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
63
64/*
65 * Because of various casts and different args can't use
66 * IMPLEMENT_BLOCK_CIPHER
67 */
68
69static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
70 const unsigned char *in, size_t inl)
71{
72 BLOCK_CIPHER_ecb_loop()
73 DES_ecb3_encrypt((const_DES_cblock *)(in + i),
74 (DES_cblock *)(out + i),
75 &data(ctx)->ks1, &data(ctx)->ks2,
76 &data(ctx)->ks3, EVP_CIPHER_CTX_is_encrypting(ctx));
77 return 1;
78}
79
80static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
81 const unsigned char *in, size_t inl)
82{
83 while (inl >= EVP_MAXCHUNK) {
84 int num = EVP_CIPHER_CTX_get_num(ctx);
85 DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
86 &data(ctx)->ks1, &data(ctx)->ks2,
87 &data(ctx)->ks3,
88 (DES_cblock *)ctx->iv,
89 &num);
90 EVP_CIPHER_CTX_set_num(ctx, num);
91 inl -= EVP_MAXCHUNK;
92 in += EVP_MAXCHUNK;
93 out += EVP_MAXCHUNK;
94 }
95 if (inl) {
96 int num = EVP_CIPHER_CTX_get_num(ctx);
97 DES_ede3_ofb64_encrypt(in, out, (long)inl,
98 &data(ctx)->ks1, &data(ctx)->ks2,
99 &data(ctx)->ks3,
100 (DES_cblock *)ctx->iv,
101 &num);
102 EVP_CIPHER_CTX_set_num(ctx, num);
103 }
104 return 1;
105}
106
107static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
108 const unsigned char *in, size_t inl)
109{
110 DES_EDE_KEY *dat = data(ctx);
111
112 if (dat->stream.cbc != NULL) {
113 (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
114 ctx->iv);
115 return 1;
116 }
117
118 while (inl >= EVP_MAXCHUNK) {
119 DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
120 &dat->ks1, &dat->ks2, &dat->ks3,
121 (DES_cblock *)ctx->iv,
122 EVP_CIPHER_CTX_is_encrypting(ctx));
123 inl -= EVP_MAXCHUNK;
124 in += EVP_MAXCHUNK;
125 out += EVP_MAXCHUNK;
126 }
127 if (inl)
128 DES_ede3_cbc_encrypt(in, out, (long)inl,
129 &dat->ks1, &dat->ks2, &dat->ks3,
130 (DES_cblock *)ctx->iv,
131 EVP_CIPHER_CTX_is_encrypting(ctx));
132 return 1;
133}
134
135static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
136 const unsigned char *in, size_t inl)
137{
138 while (inl >= EVP_MAXCHUNK) {
139 int num = EVP_CIPHER_CTX_get_num(ctx);
140 DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
141 &data(ctx)->ks1, &data(ctx)->ks2,
142 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
143 &num, EVP_CIPHER_CTX_is_encrypting(ctx));
144 EVP_CIPHER_CTX_set_num(ctx, num);
145 inl -= EVP_MAXCHUNK;
146 in += EVP_MAXCHUNK;
147 out += EVP_MAXCHUNK;
148 }
149 if (inl) {
150 int num = EVP_CIPHER_CTX_get_num(ctx);
151 DES_ede3_cfb64_encrypt(in, out, (long)inl,
152 &data(ctx)->ks1, &data(ctx)->ks2,
153 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
154 &num, EVP_CIPHER_CTX_is_encrypting(ctx));
155 EVP_CIPHER_CTX_set_num(ctx, num);
156 }
157 return 1;
158}
159
160/*
161 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
162 * right way, so wrap it here
163 */
164static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
165 const unsigned char *in, size_t inl)
166{
167 size_t n;
168 unsigned char c[1], d[1];
169
170 if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
171 inl *= 8;
172 for (n = 0; n < inl; ++n) {
173 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
174 DES_ede3_cfb_encrypt(c, d, 1, 1,
175 &data(ctx)->ks1, &data(ctx)->ks2,
176 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
177 EVP_CIPHER_CTX_is_encrypting(ctx));
178 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
179 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
180 }
181
182 return 1;
183}
184
185static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
186 const unsigned char *in, size_t inl)
187{
188 while (inl >= EVP_MAXCHUNK) {
189 DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
190 &data(ctx)->ks1, &data(ctx)->ks2,
191 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
192 EVP_CIPHER_CTX_is_encrypting(ctx));
193 inl -= EVP_MAXCHUNK;
194 in += EVP_MAXCHUNK;
195 out += EVP_MAXCHUNK;
196 }
197 if (inl)
198 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
199 &data(ctx)->ks1, &data(ctx)->ks2,
200 &data(ctx)->ks3, (DES_cblock *)ctx->iv,
201 EVP_CIPHER_CTX_is_encrypting(ctx));
202 return 1;
203}
204
205BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
206 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
207 des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
208# define des_ede3_cfb64_cipher des_ede_cfb64_cipher
209# define des_ede3_ofb_cipher des_ede_ofb_cipher
210# define des_ede3_cbc_cipher des_ede_cbc_cipher
211# define des_ede3_ecb_cipher des_ede_ecb_cipher
212 BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
213 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
214 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
215
216 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
217 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
218 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
219
220 BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
221 EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
222 des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
223
224static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
225 const unsigned char *iv, int enc)
226{
227 DES_cblock *deskey = (DES_cblock *)key;
228 DES_EDE_KEY *dat = data(ctx);
229
230 dat->stream.cbc = NULL;
231# if defined(SPARC_DES_CAPABLE)
232 if (SPARC_DES_CAPABLE) {
233 int mode = EVP_CIPHER_CTX_get_mode(ctx);
234
235 if (mode == EVP_CIPH_CBC_MODE) {
236 des_t4_key_expand(&deskey[0], &dat->ks1);
237 des_t4_key_expand(&deskey[1], &dat->ks2);
238 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
239 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
240 des_t4_ede3_cbc_decrypt;
241 return 1;
242 }
243 }
244# endif
245 DES_set_key_unchecked(&deskey[0], &dat->ks1);
246 DES_set_key_unchecked(&deskey[1], &dat->ks2);
247 memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
248 return 1;
249}
250
251static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
252 const unsigned char *iv, int enc)
253{
254 DES_cblock *deskey = (DES_cblock *)key;
255 DES_EDE_KEY *dat = data(ctx);
256
257 dat->stream.cbc = NULL;
258# if defined(SPARC_DES_CAPABLE)
259 if (SPARC_DES_CAPABLE) {
260 int mode = EVP_CIPHER_CTX_get_mode(ctx);
261
262 if (mode == EVP_CIPH_CBC_MODE) {
263 des_t4_key_expand(&deskey[0], &dat->ks1);
264 des_t4_key_expand(&deskey[1], &dat->ks2);
265 des_t4_key_expand(&deskey[2], &dat->ks3);
266 dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
267 des_t4_ede3_cbc_decrypt;
268 return 1;
269 }
270 }
271# endif
272 DES_set_key_unchecked(&deskey[0], &dat->ks1);
273 DES_set_key_unchecked(&deskey[1], &dat->ks2);
274 DES_set_key_unchecked(&deskey[2], &dat->ks3);
275 return 1;
276}
277
278static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
279{
280
281 DES_cblock *deskey = ptr;
282 int kl;
283
284 switch (type) {
285 case EVP_CTRL_RAND_KEY:
286 kl = EVP_CIPHER_CTX_get_key_length(ctx);
287 if (kl < 0 || RAND_priv_bytes(ptr, kl) <= 0)
288 return 0;
289 DES_set_odd_parity(deskey);
290 if (kl >= 16)
291 DES_set_odd_parity(deskey + 1);
292 if (kl >= 24)
293 DES_set_odd_parity(deskey + 2);
294 return 1;
295
296 default:
297 return -1;
298 }
299}
300
301const EVP_CIPHER *EVP_des_ede(void)
302{
303 return &des_ede_ecb;
304}
305
306const EVP_CIPHER *EVP_des_ede3(void)
307{
308 return &des_ede3_ecb;
309}
310
311
312# include <openssl/sha.h>
313
314static const unsigned char wrap_iv[8] =
315 { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
316
317static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
318 const unsigned char *in, size_t inl)
319{
320 unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
321 int rv = -1;
322 if (inl < 24)
323 return -1;
324 if (out == NULL)
325 return inl - 16;
326 memcpy(ctx->iv, wrap_iv, 8);
327 /* Decrypt first block which will end up as icv */
328 des_ede_cbc_cipher(ctx, icv, in, 8);
329 /* Decrypt central blocks */
330 /*
331 * If decrypting in place move whole output along a block so the next
332 * des_ede_cbc_cipher is in place.
333 */
334 if (out == in) {
335 memmove(out, out + 8, inl - 8);
336 in -= 8;
337 }
338 des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
339 /* Decrypt final block which will be IV */
340 des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
341 /* Reverse order of everything */
342 BUF_reverse(icv, NULL, 8);
343 BUF_reverse(out, NULL, inl - 16);
344 BUF_reverse(ctx->iv, iv, 8);
345 /* Decrypt again using new IV */
346 des_ede_cbc_cipher(ctx, out, out, inl - 16);
347 des_ede_cbc_cipher(ctx, icv, icv, 8);
348 if (ossl_sha1(out, inl - 16, sha1tmp) /* Work out hash of first portion */
349 && CRYPTO_memcmp(sha1tmp, icv, 8) == 0)
350 rv = inl - 16;
351 OPENSSL_cleanse(icv, 8);
352 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
353 OPENSSL_cleanse(iv, 8);
354 OPENSSL_cleanse(ctx->iv, 8);
355 if (rv == -1)
356 OPENSSL_cleanse(out, inl - 16);
357
358 return rv;
359}
360
361static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
362 const unsigned char *in, size_t inl)
363{
364 unsigned char sha1tmp[SHA_DIGEST_LENGTH];
365 if (out == NULL)
366 return inl + 16;
367 /* Copy input to output buffer + 8 so we have space for IV */
368 memmove(out + 8, in, inl);
369 /* Work out ICV */
370 if (!ossl_sha1(in, inl, sha1tmp))
371 return -1;
372 memcpy(out + inl + 8, sha1tmp, 8);
373 OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
374 /* Generate random IV */
375 if (RAND_bytes(ctx->iv, 8) <= 0)
376 return -1;
377 memcpy(out, ctx->iv, 8);
378 /* Encrypt everything after IV in place */
379 des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
380 BUF_reverse(out, NULL, inl + 16);
381 memcpy(ctx->iv, wrap_iv, 8);
382 des_ede_cbc_cipher(ctx, out, out, inl + 16);
383 return inl + 16;
384}
385
386static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
387 const unsigned char *in, size_t inl)
388{
389 /*
390 * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
391 * is more than will ever be needed. Also input length must be a multiple
392 * of 8 bits.
393 */
394 if (inl >= EVP_MAXCHUNK || inl % 8)
395 return -1;
396
397 if (ossl_is_partially_overlapping(out, in, inl)) {
398 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
399 return 0;
400 }
401
402 if (EVP_CIPHER_CTX_is_encrypting(ctx))
403 return des_ede3_wrap(ctx, out, in, inl);
404 else
405 return des_ede3_unwrap(ctx, out, in, inl);
406}
407
408static const EVP_CIPHER des3_wrap = {
409 NID_id_smime_alg_CMS3DESwrap,
410 8, 24, 0,
411 EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
412 | EVP_CIPH_FLAG_DEFAULT_ASN1,
413 EVP_ORIG_GLOBAL,
414 des_ede3_init_key, des_ede3_wrap_cipher,
415 NULL,
416 sizeof(DES_EDE_KEY),
417 NULL, NULL, NULL, NULL
418};
419
420const EVP_CIPHER *EVP_des_ede3_wrap(void)
421{
422 return &des3_wrap;
423}
424
425#endif
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