summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/evp/evp_enc.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/evp/evp_enc.c')
-rw-r--r--src/lib/libcrypto/evp/evp_enc.c440
1 files changed, 0 insertions, 440 deletions
diff --git a/src/lib/libcrypto/evp/evp_enc.c b/src/lib/libcrypto/evp/evp_enc.c
deleted file mode 100644
index 30e0ca4d9f..0000000000
--- a/src/lib/libcrypto/evp/evp_enc.c
+++ /dev/null
@@ -1,440 +0,0 @@
1/* crypto/evp/evp_enc.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/evp.h>
62#include <openssl/err.h>
63#include <openssl/rand.h>
64#ifndef OPENSSL_NO_ENGINE
65#include <openssl/engine.h>
66#endif
67#include "evp_locl.h"
68
69#ifdef OPENSSL_FIPS
70 #define M_do_cipher(ctx, out, in, inl) \
71 EVP_Cipher(ctx,out,in,inl)
72#else
73 #define M_do_cipher(ctx, out, in, inl) \
74 ctx->cipher->do_cipher(ctx,out,in,inl)
75#endif
76
77const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT;
78
79EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
80 {
81 EVP_CIPHER_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
82 if (ctx)
83 EVP_CIPHER_CTX_init(ctx);
84 return ctx;
85 }
86
87int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
88 const unsigned char *key, const unsigned char *iv, int enc)
89 {
90 if (cipher)
91 EVP_CIPHER_CTX_init(ctx);
92 return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc);
93 }
94
95int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
96 const unsigned char *in, int inl)
97 {
98 if (ctx->encrypt)
99 return EVP_EncryptUpdate(ctx,out,outl,in,inl);
100 else return EVP_DecryptUpdate(ctx,out,outl,in,inl);
101 }
102
103int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
104 {
105 if (ctx->encrypt)
106 return EVP_EncryptFinal_ex(ctx,out,outl);
107 else return EVP_DecryptFinal_ex(ctx,out,outl);
108 }
109
110int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
111 {
112 if (ctx->encrypt)
113 return EVP_EncryptFinal(ctx,out,outl);
114 else return EVP_DecryptFinal(ctx,out,outl);
115 }
116
117int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
118 const unsigned char *key, const unsigned char *iv)
119 {
120 return EVP_CipherInit(ctx, cipher, key, iv, 1);
121 }
122
123int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *cipher, ENGINE *impl,
124 const unsigned char *key, const unsigned char *iv)
125 {
126 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
127 }
128
129int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
130 const unsigned char *key, const unsigned char *iv)
131 {
132 return EVP_CipherInit(ctx, cipher, key, iv, 0);
133 }
134
135int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
136 const unsigned char *key, const unsigned char *iv)
137 {
138 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
139 }
140
141int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
142 const unsigned char *in, int inl)
143 {
144 int i,j,bl;
145
146 if (inl <= 0)
147 {
148 *outl = 0;
149 return inl == 0;
150 }
151
152 if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0)
153 {
154 if(M_do_cipher(ctx,out,in,inl))
155 {
156 *outl=inl;
157 return 1;
158 }
159 else
160 {
161 *outl=0;
162 return 0;
163 }
164 }
165 i=ctx->buf_len;
166 bl=ctx->cipher->block_size;
167 OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
168 if (i != 0)
169 {
170 if (i+inl < bl)
171 {
172 memcpy(&(ctx->buf[i]),in,inl);
173 ctx->buf_len+=inl;
174 *outl=0;
175 return 1;
176 }
177 else
178 {
179 j=bl-i;
180 memcpy(&(ctx->buf[i]),in,j);
181 if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0;
182 inl-=j;
183 in+=j;
184 out+=bl;
185 *outl=bl;
186 }
187 }
188 else
189 *outl = 0;
190 i=inl&(bl-1);
191 inl-=i;
192 if (inl > 0)
193 {
194 if(!M_do_cipher(ctx,out,in,inl)) return 0;
195 *outl+=inl;
196 }
197
198 if (i != 0)
199 memcpy(ctx->buf,&(in[inl]),i);
200 ctx->buf_len=i;
201 return 1;
202 }
203
204int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
205 {
206 int ret;
207 ret = EVP_EncryptFinal_ex(ctx, out, outl);
208 return ret;
209 }
210
211int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
212 {
213 int n,ret;
214 unsigned int i, b, bl;
215
216 b=ctx->cipher->block_size;
217 OPENSSL_assert(b <= sizeof ctx->buf);
218 if (b == 1)
219 {
220 *outl=0;
221 return 1;
222 }
223 bl=ctx->buf_len;
224 if (ctx->flags & EVP_CIPH_NO_PADDING)
225 {
226 if(bl)
227 {
228 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
229 return 0;
230 }
231 *outl = 0;
232 return 1;
233 }
234
235 n=b-bl;
236 for (i=bl; i<b; i++)
237 ctx->buf[i]=n;
238 ret=M_do_cipher(ctx,out,ctx->buf,b);
239
240
241 if(ret)
242 *outl=b;
243
244 return ret;
245 }
246
247int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
248 const unsigned char *in, int inl)
249 {
250 int fix_len;
251 unsigned int b;
252
253 if (inl <= 0)
254 {
255 *outl = 0;
256 return inl == 0;
257 }
258
259 if (ctx->flags & EVP_CIPH_NO_PADDING)
260 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
261
262 b=ctx->cipher->block_size;
263 OPENSSL_assert(b <= sizeof ctx->final);
264
265 if(ctx->final_used)
266 {
267 memcpy(out,ctx->final,b);
268 out+=b;
269 fix_len = 1;
270 }
271 else
272 fix_len = 0;
273
274
275 if(!EVP_EncryptUpdate(ctx,out,outl,in,inl))
276 return 0;
277
278 /* if we have 'decrypted' a multiple of block size, make sure
279 * we have a copy of this last block */
280 if (b > 1 && !ctx->buf_len)
281 {
282 *outl-=b;
283 ctx->final_used=1;
284 memcpy(ctx->final,&out[*outl],b);
285 }
286 else
287 ctx->final_used = 0;
288
289 if (fix_len)
290 *outl += b;
291
292 return 1;
293 }
294
295int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
296 {
297 int ret;
298 ret = EVP_DecryptFinal_ex(ctx, out, outl);
299 return ret;
300 }
301
302int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
303 {
304 int i,n;
305 unsigned int b;
306
307 *outl=0;
308 b=ctx->cipher->block_size;
309 if (ctx->flags & EVP_CIPH_NO_PADDING)
310 {
311 if(ctx->buf_len)
312 {
313 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
314 return 0;
315 }
316 *outl = 0;
317 return 1;
318 }
319 if (b > 1)
320 {
321 if (ctx->buf_len || !ctx->final_used)
322 {
323 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_WRONG_FINAL_BLOCK_LENGTH);
324 return(0);
325 }
326 OPENSSL_assert(b <= sizeof ctx->final);
327 n=ctx->final[b-1];
328 if (n == 0 || n > (int)b)
329 {
330 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
331 return(0);
332 }
333 for (i=0; i<n; i++)
334 {
335 if (ctx->final[--b] != n)
336 {
337 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
338 return(0);
339 }
340 }
341 n=ctx->cipher->block_size-n;
342 for (i=0; i<n; i++)
343 out[i]=ctx->final[i];
344 *outl=n;
345 }
346 else
347 *outl=0;
348 return(1);
349 }
350
351void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
352 {
353 if (ctx)
354 {
355 EVP_CIPHER_CTX_cleanup(ctx);
356 OPENSSL_free(ctx);
357 }
358 }
359
360int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
361 {
362 if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
363 return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
364 if(c->key_len == keylen) return 1;
365 if((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH))
366 {
367 c->key_len = keylen;
368 return 1;
369 }
370 EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH,EVP_R_INVALID_KEY_LENGTH);
371 return 0;
372 }
373
374int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
375 {
376 if (pad) ctx->flags &= ~EVP_CIPH_NO_PADDING;
377 else ctx->flags |= EVP_CIPH_NO_PADDING;
378 return 1;
379 }
380
381int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
382 {
383 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
384 return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
385 if (RAND_bytes(key, ctx->key_len) <= 0)
386 return 0;
387 return 1;
388 }
389
390#ifndef OPENSSL_NO_ENGINE
391
392#ifdef OPENSSL_FIPS
393
394static int do_evp_enc_engine_full(EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pcipher, ENGINE *impl)
395 {
396 if(impl)
397 {
398 if (!ENGINE_init(impl))
399 {
400 EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR);
401 return 0;
402 }
403 }
404 else
405 /* Ask if an ENGINE is reserved for this job */
406 impl = ENGINE_get_cipher_engine((*pcipher)->nid);
407 if(impl)
408 {
409 /* There's an ENGINE for this job ... (apparently) */
410 const EVP_CIPHER *c = ENGINE_get_cipher(impl, (*pcipher)->nid);
411 if(!c)
412 {
413 /* One positive side-effect of US's export
414 * control history, is that we should at least
415 * be able to avoid using US mispellings of
416 * "initialisation"? */
417 EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR);
418 return 0;
419 }
420 /* We'll use the ENGINE's private cipher definition */
421 *pcipher = c;
422 /* Store the ENGINE functional reference so we know
423 * 'cipher' came from an ENGINE and we need to release
424 * it when done. */
425 ctx->engine = impl;
426 }
427 else
428 ctx->engine = NULL;
429 return 1;
430 }
431
432void int_EVP_CIPHER_init_engine_callbacks(void)
433 {
434 int_EVP_CIPHER_set_engine_callbacks(
435 ENGINE_finish, do_evp_enc_engine_full);
436 }
437
438#endif
439
440#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-03 20:28:14 +0000