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Diffstat (limited to 'src/lib/libcrypto/evp/evp_enc.c')
-rw-r--r--src/lib/libcrypto/evp/evp_enc.c254
1 files changed, 63 insertions, 191 deletions
diff --git a/src/lib/libcrypto/evp/evp_enc.c b/src/lib/libcrypto/evp/evp_enc.c
index 6e582c458d..30e0ca4d9f 100644
--- a/src/lib/libcrypto/evp/evp_enc.c
+++ b/src/lib/libcrypto/evp/evp_enc.c
@@ -66,13 +66,15 @@
66#endif 66#endif
67#include "evp_locl.h" 67#include "evp_locl.h"
68 68
69const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT; 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
70 76
71void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) 77const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT;
72 {
73 memset(ctx,0,sizeof(EVP_CIPHER_CTX));
74 /* ctx->cipher=NULL; */
75 }
76 78
77EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) 79EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
78 { 80 {
@@ -90,144 +92,6 @@ int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
90 return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc); 92 return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc);
91 } 93 }
92 94
93int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
94 const unsigned char *key, const unsigned char *iv, int enc)
95 {
96 if (enc == -1)
97 enc = ctx->encrypt;
98 else
99 {
100 if (enc)
101 enc = 1;
102 ctx->encrypt = enc;
103 }
104#ifndef OPENSSL_NO_ENGINE
105 /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
106 * so this context may already have an ENGINE! Try to avoid releasing
107 * the previous handle, re-querying for an ENGINE, and having a
108 * reinitialisation, when it may all be unecessary. */
109 if (ctx->engine && ctx->cipher && (!cipher ||
110 (cipher && (cipher->nid == ctx->cipher->nid))))
111 goto skip_to_init;
112#endif
113 if (cipher)
114 {
115 /* Ensure a context left lying around from last time is cleared
116 * (the previous check attempted to avoid this if the same
117 * ENGINE and EVP_CIPHER could be used). */
118 EVP_CIPHER_CTX_cleanup(ctx);
119
120 /* Restore encrypt field: it is zeroed by cleanup */
121 ctx->encrypt = enc;
122#ifndef OPENSSL_NO_ENGINE
123 if(impl)
124 {
125 if (!ENGINE_init(impl))
126 {
127 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
128 return 0;
129 }
130 }
131 else
132 /* Ask if an ENGINE is reserved for this job */
133 impl = ENGINE_get_cipher_engine(cipher->nid);
134 if(impl)
135 {
136 /* There's an ENGINE for this job ... (apparently) */
137 const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
138 if(!c)
139 {
140 /* One positive side-effect of US's export
141 * control history, is that we should at least
142 * be able to avoid using US mispellings of
143 * "initialisation"? */
144 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
145 return 0;
146 }
147 /* We'll use the ENGINE's private cipher definition */
148 cipher = c;
149 /* Store the ENGINE functional reference so we know
150 * 'cipher' came from an ENGINE and we need to release
151 * it when done. */
152 ctx->engine = impl;
153 }
154 else
155 ctx->engine = NULL;
156#endif
157
158 ctx->cipher=cipher;
159 if (ctx->cipher->ctx_size)
160 {
161 ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size);
162 if (!ctx->cipher_data)
163 {
164 EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE);
165 return 0;
166 }
167 }
168 else
169 {
170 ctx->cipher_data = NULL;
171 }
172 ctx->key_len = cipher->key_len;
173 ctx->flags = 0;
174 if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
175 {
176 if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
177 {
178 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
179 return 0;
180 }
181 }
182 }
183 else if(!ctx->cipher)
184 {
185 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
186 return 0;
187 }
188#ifndef OPENSSL_NO_ENGINE
189skip_to_init:
190#endif
191 /* we assume block size is a power of 2 in *cryptUpdate */
192 OPENSSL_assert(ctx->cipher->block_size == 1
193 || ctx->cipher->block_size == 8
194 || ctx->cipher->block_size == 16);
195
196 if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
197 switch(EVP_CIPHER_CTX_mode(ctx)) {
198
199 case EVP_CIPH_STREAM_CIPHER:
200 case EVP_CIPH_ECB_MODE:
201 break;
202
203 case EVP_CIPH_CFB_MODE:
204 case EVP_CIPH_OFB_MODE:
205
206 ctx->num = 0;
207
208 case EVP_CIPH_CBC_MODE:
209
210 OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <=
211 (int)sizeof(ctx->iv));
212 if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
213 memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
214 break;
215
216 default:
217 return 0;
218 break;
219 }
220 }
221
222 if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
223 if(!ctx->cipher->init(ctx,key,iv,enc)) return 0;
224 }
225 ctx->buf_len=0;
226 ctx->final_used=0;
227 ctx->block_mask=ctx->cipher->block_size-1;
228 return 1;
229 }
230
231int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 95int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
232 const unsigned char *in, int inl) 96 const unsigned char *in, int inl)
233 { 97 {
@@ -287,7 +151,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
287 151
288 if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0) 152 if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0)
289 { 153 {
290 if(ctx->cipher->do_cipher(ctx,out,in,inl)) 154 if(M_do_cipher(ctx,out,in,inl))
291 { 155 {
292 *outl=inl; 156 *outl=inl;
293 return 1; 157 return 1;
@@ -314,7 +178,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
314 { 178 {
315 j=bl-i; 179 j=bl-i;
316 memcpy(&(ctx->buf[i]),in,j); 180 memcpy(&(ctx->buf[i]),in,j);
317 if(!ctx->cipher->do_cipher(ctx,out,ctx->buf,bl)) return 0; 181 if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0;
318 inl-=j; 182 inl-=j;
319 in+=j; 183 in+=j;
320 out+=bl; 184 out+=bl;
@@ -327,7 +191,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
327 inl-=i; 191 inl-=i;
328 if (inl > 0) 192 if (inl > 0)
329 { 193 {
330 if(!ctx->cipher->do_cipher(ctx,out,in,inl)) return 0; 194 if(!M_do_cipher(ctx,out,in,inl)) return 0;
331 *outl+=inl; 195 *outl+=inl;
332 } 196 }
333 197
@@ -371,7 +235,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
371 n=b-bl; 235 n=b-bl;
372 for (i=bl; i<b; i++) 236 for (i=bl; i<b; i++)
373 ctx->buf[i]=n; 237 ctx->buf[i]=n;
374 ret=ctx->cipher->do_cipher(ctx,out,ctx->buf,b); 238 ret=M_do_cipher(ctx,out,ctx->buf,b);
375 239
376 240
377 if(ret) 241 if(ret)
@@ -493,28 +357,6 @@ void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
493 } 357 }
494 } 358 }
495 359
496int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
497 {
498 if (c->cipher != NULL)
499 {
500 if(c->cipher->cleanup && !c->cipher->cleanup(c))
501 return 0;
502 /* Cleanse cipher context data */
503 if (c->cipher_data)
504 OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size);
505 }
506 if (c->cipher_data)
507 OPENSSL_free(c->cipher_data);
508#ifndef OPENSSL_NO_ENGINE
509 if (c->engine)
510 /* The EVP_CIPHER we used belongs to an ENGINE, release the
511 * functional reference we held for this reason. */
512 ENGINE_finish(c->engine);
513#endif
514 memset(c,0,sizeof(EVP_CIPHER_CTX));
515 return 1;
516 }
517
518int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen) 360int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
519 { 361 {
520 if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) 362 if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
@@ -536,27 +378,6 @@ int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
536 return 1; 378 return 1;
537 } 379 }
538 380
539int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
540{
541 int ret;
542 if(!ctx->cipher) {
543 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET);
544 return 0;
545 }
546
547 if(!ctx->cipher->ctrl) {
548 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED);
549 return 0;
550 }
551
552 ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
553 if(ret == -1) {
554 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
555 return 0;
556 }
557 return ret;
558}
559
560int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key) 381int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
561 { 382 {
562 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY) 383 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
@@ -566,3 +387,54 @@ int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
566 return 1; 387 return 1;
567 } 388 }
568 389
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
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