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authorjsing <>2015-02-09 15:49:22 +0000
committerjsing <>2015-02-09 15:49:22 +0000
commit16f790d01f7a6fc6c94e2a033a67b80c8ec5291c (patch)
treed924c624d5eb949a9e7e395dc99d92616e911ce9 /src/lib/libcrypto/ec
parent42f7780549de5b7b5e3e7943cfef87e0e41970fc (diff)
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BN_CTX_get() can fail - consistently check its return value.
There are currently cases where the return from each call is checked, the return from only the last call is checked and cases where it is not checked at all (including code in bn, ec and engine). Checking the last return value is valid as once the function fails it will continue to return NULL. However, in order to be consistent check each call with the same idiom. This makes it easy to verify. Note there are still a handful of cases that do not follow the idiom - these will be handled separately. ok beck@ doug@
Diffstat (limited to 'src/lib/libcrypto/ec')
-rw-r--r--src/lib/libcrypto/ec/ec2_mult.c26
-rw-r--r--src/lib/libcrypto/ec/ec2_oct.c32
-rw-r--r--src/lib/libcrypto/ec/ec2_smpl.c56
-rw-r--r--src/lib/libcrypto/ec/ec_key.c9
-rw-r--r--src/lib/libcrypto/ec/ec_lib.c33
-rw-r--r--src/lib/libcrypto/ec/ec_mult.c5
-rw-r--r--src/lib/libcrypto/ec/ecp_oct.c30
-rw-r--r--src/lib/libcrypto/ec/ecp_smpl.c101
8 files changed, 165 insertions, 127 deletions
diff --git a/src/lib/libcrypto/ec/ec2_mult.c b/src/lib/libcrypto/ec/ec2_mult.c
index dd113907be..8f0091efe1 100644
--- a/src/lib/libcrypto/ec/ec2_mult.c
+++ b/src/lib/libcrypto/ec/ec2_mult.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec2_mult.c,v 1.6 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ec2_mult.c,v 1.7 2015/02/09 15:49:22 jsing Exp $ */
2/* ==================================================================== 2/* ====================================================================
3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
4 * 4 *
@@ -91,8 +91,7 @@ gf2m_Mdouble(const EC_GROUP *group, BIGNUM *x, BIGNUM *z, BN_CTX *ctx)
91 91
92 /* Since Mdouble is static we can guarantee that ctx != NULL. */ 92 /* Since Mdouble is static we can guarantee that ctx != NULL. */
93 BN_CTX_start(ctx); 93 BN_CTX_start(ctx);
94 t1 = BN_CTX_get(ctx); 94 if ((t1 = BN_CTX_get(ctx)) == NULL)
95 if (t1 == NULL)
96 goto err; 95 goto err;
97 96
98 if (!group->meth->field_sqr(group, x, x, ctx)) 97 if (!group->meth->field_sqr(group, x, x, ctx))
@@ -132,9 +131,9 @@ gf2m_Madd(const EC_GROUP *group, const BIGNUM *x, BIGNUM *x1, BIGNUM *z1,
132 131
133 /* Since Madd is static we can guarantee that ctx != NULL. */ 132 /* Since Madd is static we can guarantee that ctx != NULL. */
134 BN_CTX_start(ctx); 133 BN_CTX_start(ctx);
135 t1 = BN_CTX_get(ctx); 134 if ((t1 = BN_CTX_get(ctx)) == NULL)
136 t2 = BN_CTX_get(ctx); 135 goto err;
137 if (t2 == NULL) 136 if ((t2 = BN_CTX_get(ctx)) == NULL)
138 goto err; 137 goto err;
139 138
140 if (!BN_copy(t1, x)) 139 if (!BN_copy(t1, x))
@@ -191,10 +190,11 @@ gf2m_Mxy(const EC_GROUP *group, const BIGNUM *x, const BIGNUM *y, BIGNUM *x1,
191 } 190 }
192 /* Since Mxy is static we can guarantee that ctx != NULL. */ 191 /* Since Mxy is static we can guarantee that ctx != NULL. */
193 BN_CTX_start(ctx); 192 BN_CTX_start(ctx);
194 t3 = BN_CTX_get(ctx); 193 if ((t3 = BN_CTX_get(ctx)) == NULL)
195 t4 = BN_CTX_get(ctx); 194 goto err;
196 t5 = BN_CTX_get(ctx); 195 if ((t4 = BN_CTX_get(ctx)) == NULL)
197 if (t5 == NULL) 196 goto err;
197 if ((t5 = BN_CTX_get(ctx)) == NULL)
198 goto err; 198 goto err;
199 199
200 if (!BN_one(t5)) 200 if (!BN_one(t5))
@@ -281,9 +281,9 @@ ec_GF2m_montgomery_point_multiply(const EC_GROUP *group, EC_POINT *r,
281 281
282 /* Since point_multiply is static we can guarantee that ctx != NULL. */ 282 /* Since point_multiply is static we can guarantee that ctx != NULL. */
283 BN_CTX_start(ctx); 283 BN_CTX_start(ctx);
284 x1 = BN_CTX_get(ctx); 284 if ((x1 = BN_CTX_get(ctx)) == NULL)
285 z1 = BN_CTX_get(ctx); 285 goto err;
286 if (z1 == NULL) 286 if ((z1 = BN_CTX_get(ctx)) == NULL)
287 goto err; 287 goto err;
288 288
289 x2 = &r->X; 289 x2 = &r->X;
diff --git a/src/lib/libcrypto/ec/ec2_oct.c b/src/lib/libcrypto/ec/ec2_oct.c
index c45d9c2219..72690b1bc7 100644
--- a/src/lib/libcrypto/ec/ec2_oct.c
+++ b/src/lib/libcrypto/ec/ec2_oct.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec2_oct.c,v 1.6 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ec2_oct.c,v 1.7 2015/02/09 15:49:22 jsing Exp $ */
2/* ==================================================================== 2/* ====================================================================
3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
4 * 4 *
@@ -109,11 +109,13 @@ ec_GF2m_simple_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *point
109 y_bit = (y_bit != 0) ? 1 : 0; 109 y_bit = (y_bit != 0) ? 1 : 0;
110 110
111 BN_CTX_start(ctx); 111 BN_CTX_start(ctx);
112 tmp = BN_CTX_get(ctx); 112 if ((tmp = BN_CTX_get(ctx)) == NULL)
113 x = BN_CTX_get(ctx); 113 goto err;
114 y = BN_CTX_get(ctx); 114 if ((x = BN_CTX_get(ctx)) == NULL)
115 z = BN_CTX_get(ctx); 115 goto err;
116 if (z == NULL) 116 if ((y = BN_CTX_get(ctx)) == NULL)
117 goto err;
118 if ((z = BN_CTX_get(ctx)) == NULL)
117 goto err; 119 goto err;
118 120
119 if (!BN_GF2m_mod_arr(x, x_, group->poly)) 121 if (!BN_GF2m_mod_arr(x, x_, group->poly))
@@ -212,10 +214,11 @@ ec_GF2m_simple_point2oct(const EC_GROUP *group, const EC_POINT *point,
212 } 214 }
213 BN_CTX_start(ctx); 215 BN_CTX_start(ctx);
214 used_ctx = 1; 216 used_ctx = 1;
215 x = BN_CTX_get(ctx); 217 if ((x = BN_CTX_get(ctx)) == NULL)
216 y = BN_CTX_get(ctx); 218 goto err;
217 yxi = BN_CTX_get(ctx); 219 if ((y = BN_CTX_get(ctx)) == NULL)
218 if (yxi == NULL) 220 goto err;
221 if ((yxi = BN_CTX_get(ctx)) == NULL)
219 goto err; 222 goto err;
220 223
221 if (!EC_POINT_get_affine_coordinates_GF2m(group, point, x, y, ctx)) 224 if (!EC_POINT_get_affine_coordinates_GF2m(group, point, x, y, ctx))
@@ -329,10 +332,11 @@ ec_GF2m_simple_oct2point(const EC_GROUP *group, EC_POINT *point,
329 return 0; 332 return 0;
330 } 333 }
331 BN_CTX_start(ctx); 334 BN_CTX_start(ctx);
332 x = BN_CTX_get(ctx); 335 if ((x = BN_CTX_get(ctx)) == NULL)
333 y = BN_CTX_get(ctx); 336 goto err;
334 yxi = BN_CTX_get(ctx); 337 if ((y = BN_CTX_get(ctx)) == NULL)
335 if (yxi == NULL) 338 goto err;
339 if ((yxi = BN_CTX_get(ctx)) == NULL)
336 goto err; 340 goto err;
337 341
338 if (!BN_bin2bn(buf + 1, field_len, x)) 342 if (!BN_bin2bn(buf + 1, field_len, x))
diff --git a/src/lib/libcrypto/ec/ec2_smpl.c b/src/lib/libcrypto/ec/ec2_smpl.c
index b9c066c5c1..43f0afd5ae 100644
--- a/src/lib/libcrypto/ec/ec2_smpl.c
+++ b/src/lib/libcrypto/ec/ec2_smpl.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec2_smpl.c,v 1.13 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ec2_smpl.c,v 1.14 2015/02/09 15:49:22 jsing Exp $ */
2/* ==================================================================== 2/* ====================================================================
3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
4 * 4 *
@@ -291,8 +291,7 @@ ec_GF2m_simple_group_check_discriminant(const EC_GROUP * group, BN_CTX * ctx)
291 } 291 }
292 } 292 }
293 BN_CTX_start(ctx); 293 BN_CTX_start(ctx);
294 b = BN_CTX_get(ctx); 294 if ((b = BN_CTX_get(ctx)) == NULL)
295 if (b == NULL)
296 goto err; 295 goto err;
297 296
298 if (!BN_GF2m_mod_arr(b, &group->b, group->poly)) 297 if (!BN_GF2m_mod_arr(b, &group->b, group->poly))
@@ -464,15 +463,21 @@ ec_GF2m_simple_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
464 return 0; 463 return 0;
465 } 464 }
466 BN_CTX_start(ctx); 465 BN_CTX_start(ctx);
467 x0 = BN_CTX_get(ctx); 466 if ((x0 = BN_CTX_get(ctx)) == NULL)
468 y0 = BN_CTX_get(ctx); 467 goto err;
469 x1 = BN_CTX_get(ctx); 468 if ((y0 = BN_CTX_get(ctx)) == NULL)
470 y1 = BN_CTX_get(ctx); 469 goto err;
471 x2 = BN_CTX_get(ctx); 470 if ((x1 = BN_CTX_get(ctx)) == NULL)
472 y2 = BN_CTX_get(ctx); 471 goto err;
473 s = BN_CTX_get(ctx); 472 if ((y1 = BN_CTX_get(ctx)) == NULL)
474 t = BN_CTX_get(ctx); 473 goto err;
475 if (t == NULL) 474 if ((x2 = BN_CTX_get(ctx)) == NULL)
475 goto err;
476 if ((y2 = BN_CTX_get(ctx)) == NULL)
477 goto err;
478 if ((s = BN_CTX_get(ctx)) == NULL)
479 goto err;
480 if ((t = BN_CTX_get(ctx)) == NULL)
476 goto err; 481 goto err;
477 482
478 if (a->Z_is_one) { 483 if (a->Z_is_one) {
@@ -611,9 +616,9 @@ ec_GF2m_simple_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX
611 return -1; 616 return -1;
612 } 617 }
613 BN_CTX_start(ctx); 618 BN_CTX_start(ctx);
614 y2 = BN_CTX_get(ctx); 619 if ((y2 = BN_CTX_get(ctx)) == NULL)
615 lh = BN_CTX_get(ctx); 620 goto err;
616 if (lh == NULL) 621 if ((lh = BN_CTX_get(ctx)) == NULL)
617 goto err; 622 goto err;
618 623
619 /* 624 /*
@@ -651,7 +656,8 @@ err:
651 * 1 not equal 656 * 1 not equal
652 */ 657 */
653int 658int
654ec_GF2m_simple_cmp(const EC_GROUP * group, const EC_POINT * a, const EC_POINT * b, BN_CTX * ctx) 659ec_GF2m_simple_cmp(const EC_GROUP *group, const EC_POINT *a,
660 const EC_POINT *b, BN_CTX *ctx)
655{ 661{
656 BIGNUM *aX, *aY, *bX, *bY; 662 BIGNUM *aX, *aY, *bX, *bY;
657 BN_CTX *new_ctx = NULL; 663 BN_CTX *new_ctx = NULL;
@@ -672,11 +678,13 @@ ec_GF2m_simple_cmp(const EC_GROUP * group, const EC_POINT * a, const EC_POINT *
672 return -1; 678 return -1;
673 } 679 }
674 BN_CTX_start(ctx); 680 BN_CTX_start(ctx);
675 aX = BN_CTX_get(ctx); 681 if ((aX = BN_CTX_get(ctx)) == NULL)
676 aY = BN_CTX_get(ctx); 682 goto err;
677 bX = BN_CTX_get(ctx); 683 if ((aY = BN_CTX_get(ctx)) == NULL)
678 bY = BN_CTX_get(ctx); 684 goto err;
679 if (bY == NULL) 685 if ((bX = BN_CTX_get(ctx)) == NULL)
686 goto err;
687 if ((bY = BN_CTX_get(ctx)) == NULL)
680 goto err; 688 goto err;
681 689
682 if (!EC_POINT_get_affine_coordinates_GF2m(group, a, aX, aY, ctx)) 690 if (!EC_POINT_get_affine_coordinates_GF2m(group, a, aX, aY, ctx))
@@ -710,9 +718,9 @@ ec_GF2m_simple_make_affine(const EC_GROUP * group, EC_POINT * point, BN_CTX * ct
710 return 0; 718 return 0;
711 } 719 }
712 BN_CTX_start(ctx); 720 BN_CTX_start(ctx);
713 x = BN_CTX_get(ctx); 721 if ((x = BN_CTX_get(ctx)) == NULL)
714 y = BN_CTX_get(ctx); 722 goto err;
715 if (y == NULL) 723 if ((y = BN_CTX_get(ctx)) == NULL)
716 goto err; 724 goto err;
717 725
718 if (!EC_POINT_get_affine_coordinates_GF2m(group, point, x, y, ctx)) 726 if (!EC_POINT_get_affine_coordinates_GF2m(group, point, x, y, ctx))
diff --git a/src/lib/libcrypto/ec/ec_key.c b/src/lib/libcrypto/ec/ec_key.c
index f9904b4ee9..45192c3231 100644
--- a/src/lib/libcrypto/ec/ec_key.c
+++ b/src/lib/libcrypto/ec/ec_key.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec_key.c,v 1.10 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ec_key.c,v 1.11 2015/02/09 15:49:22 jsing Exp $ */
2/* 2/*
3 * Written by Nils Larsch for the OpenSSL project. 3 * Written by Nils Larsch for the OpenSSL project.
4 */ 4 */
@@ -359,8 +359,11 @@ EC_KEY_set_public_key_affine_coordinates(EC_KEY * key, BIGNUM * x, BIGNUM * y)
359 if (tmp_nid == NID_X9_62_characteristic_two_field) 359 if (tmp_nid == NID_X9_62_characteristic_two_field)
360 is_char_two = 1; 360 is_char_two = 1;
361 361
362 tx = BN_CTX_get(ctx); 362 if ((tx = BN_CTX_get(ctx)) == NULL)
363 ty = BN_CTX_get(ctx); 363 goto err;
364 if ((ty = BN_CTX_get(ctx)) == NULL)
365 goto err;
366
364#ifndef OPENSSL_NO_EC2M 367#ifndef OPENSSL_NO_EC2M
365 if (is_char_two) { 368 if (is_char_two) {
366 if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point, 369 if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
diff --git a/src/lib/libcrypto/ec/ec_lib.c b/src/lib/libcrypto/ec/ec_lib.c
index 47ccc614d1..8cf0f2241e 100644
--- a/src/lib/libcrypto/ec/ec_lib.c
+++ b/src/lib/libcrypto/ec/ec_lib.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec_lib.c,v 1.15 2014/07/12 16:03:37 miod Exp $ */ 1/* $OpenBSD: ec_lib.c,v 1.16 2015/02/09 15:49:22 jsing Exp $ */
2/* 2/*
3 * Originally written by Bodo Moeller for the OpenSSL project. 3 * Originally written by Bodo Moeller for the OpenSSL project.
4 */ 4 */
@@ -497,18 +497,19 @@ EC_GROUP_cmp(const EC_GROUP * a, const EC_GROUP * b, BN_CTX * ctx)
497 return -1; 497 return -1;
498 498
499 BN_CTX_start(ctx); 499 BN_CTX_start(ctx);
500 a1 = BN_CTX_get(ctx); 500 if ((a1 = BN_CTX_get(ctx)) == NULL)
501 a2 = BN_CTX_get(ctx); 501 goto err;
502 a3 = BN_CTX_get(ctx); 502 if ((a2 = BN_CTX_get(ctx)) == NULL)
503 b1 = BN_CTX_get(ctx); 503 goto err;
504 b2 = BN_CTX_get(ctx); 504 if ((a3 = BN_CTX_get(ctx)) == NULL)
505 b3 = BN_CTX_get(ctx); 505 goto err;
506 if (!b3) { 506 if ((b1 = BN_CTX_get(ctx)) == NULL)
507 BN_CTX_end(ctx); 507 goto err;
508 if (ctx_new) 508 if ((b2 = BN_CTX_get(ctx)) == NULL)
509 BN_CTX_free(ctx); 509 goto err;
510 return -1; 510 if ((b3 = BN_CTX_get(ctx)) == NULL)
511 } 511 goto err;
512
512 /* 513 /*
513 * XXX This approach assumes that the external representation of 514 * XXX This approach assumes that the external representation of
514 * curves over the same field type is the same. 515 * curves over the same field type is the same.
@@ -544,6 +545,12 @@ EC_GROUP_cmp(const EC_GROUP * a, const EC_GROUP * b, BN_CTX * ctx)
544 BN_CTX_free(ctx); 545 BN_CTX_free(ctx);
545 546
546 return r; 547 return r;
548
549err:
550 BN_CTX_end(ctx);
551 if (ctx_new)
552 BN_CTX_free(ctx);
553 return -1;
547} 554}
548 555
549 556
diff --git a/src/lib/libcrypto/ec/ec_mult.c b/src/lib/libcrypto/ec/ec_mult.c
index 9e3aee13a2..e711413598 100644
--- a/src/lib/libcrypto/ec/ec_mult.c
+++ b/src/lib/libcrypto/ec/ec_mult.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ec_mult.c,v 1.16 2015/02/07 13:19:15 doug Exp $ */ 1/* $OpenBSD: ec_mult.c,v 1.17 2015/02/09 15:49:22 jsing Exp $ */
2/* 2/*
3 * Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project. 3 * Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project.
4 */ 4 */
@@ -753,8 +753,7 @@ ec_wNAF_precompute_mult(EC_GROUP * group, BN_CTX * ctx)
753 goto err; 753 goto err;
754 } 754 }
755 BN_CTX_start(ctx); 755 BN_CTX_start(ctx);
756 order = BN_CTX_get(ctx); 756 if ((order = BN_CTX_get(ctx)) == NULL)
757 if (order == NULL)
758 goto err; 757 goto err;
759 758
760 if (!EC_GROUP_get_order(group, order, ctx)) 759 if (!EC_GROUP_get_order(group, order, ctx))
diff --git a/src/lib/libcrypto/ec/ecp_oct.c b/src/lib/libcrypto/ec/ecp_oct.c
index abc31e6382..994f0b08b1 100644
--- a/src/lib/libcrypto/ec/ecp_oct.c
+++ b/src/lib/libcrypto/ec/ecp_oct.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ecp_oct.c,v 1.6 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ecp_oct.c,v 1.7 2015/02/09 15:49:22 jsing Exp $ */
2/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de> 2/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
3 * for the OpenSSL project. 3 * for the OpenSSL project.
4 * Includes code written by Bodo Moeller for the OpenSSL project. 4 * Includes code written by Bodo Moeller for the OpenSSL project.
@@ -67,8 +67,8 @@
67#include "ec_lcl.h" 67#include "ec_lcl.h"
68 68
69int 69int
70ec_GFp_simple_set_compressed_coordinates(const EC_GROUP * group, EC_POINT * point, 70ec_GFp_simple_set_compressed_coordinates(const EC_GROUP * group,
71 const BIGNUM * x_, int y_bit, BN_CTX * ctx) 71 EC_POINT * point, const BIGNUM * x_, int y_bit, BN_CTX * ctx)
72{ 72{
73 BN_CTX *new_ctx = NULL; 73 BN_CTX *new_ctx = NULL;
74 BIGNUM *tmp1, *tmp2, *x, *y; 74 BIGNUM *tmp1, *tmp2, *x, *y;
@@ -85,11 +85,13 @@ ec_GFp_simple_set_compressed_coordinates(const EC_GROUP * group, EC_POINT * poin
85 y_bit = (y_bit != 0); 85 y_bit = (y_bit != 0);
86 86
87 BN_CTX_start(ctx); 87 BN_CTX_start(ctx);
88 tmp1 = BN_CTX_get(ctx); 88 if ((tmp1 = BN_CTX_get(ctx)) == NULL)
89 tmp2 = BN_CTX_get(ctx); 89 goto err;
90 x = BN_CTX_get(ctx); 90 if ((tmp2 = BN_CTX_get(ctx)) == NULL)
91 y = BN_CTX_get(ctx); 91 goto err;
92 if (y == NULL) 92 if ((x = BN_CTX_get(ctx)) == NULL)
93 goto err;
94 if ((y = BN_CTX_get(ctx)) == NULL)
93 goto err; 95 goto err;
94 96
95 /* 97 /*
@@ -239,9 +241,9 @@ ec_GFp_simple_point2oct(const EC_GROUP * group, const EC_POINT * point, point_co
239 } 241 }
240 BN_CTX_start(ctx); 242 BN_CTX_start(ctx);
241 used_ctx = 1; 243 used_ctx = 1;
242 x = BN_CTX_get(ctx); 244 if ((x = BN_CTX_get(ctx)) == NULL)
243 y = BN_CTX_get(ctx); 245 goto err;
244 if (y == NULL) 246 if ((y = BN_CTX_get(ctx)) == NULL)
245 goto err; 247 goto err;
246 248
247 if (!EC_POINT_get_affine_coordinates_GFp(group, point, x, y, ctx)) 249 if (!EC_POINT_get_affine_coordinates_GFp(group, point, x, y, ctx))
@@ -348,9 +350,9 @@ ec_GFp_simple_oct2point(const EC_GROUP * group, EC_POINT * point,
348 return 0; 350 return 0;
349 } 351 }
350 BN_CTX_start(ctx); 352 BN_CTX_start(ctx);
351 x = BN_CTX_get(ctx); 353 if ((x = BN_CTX_get(ctx)) == NULL)
352 y = BN_CTX_get(ctx); 354 goto err;
353 if (y == NULL) 355 if ((y = BN_CTX_get(ctx)) == NULL)
354 goto err; 356 goto err;
355 357
356 if (!BN_bin2bn(buf + 1, field_len, x)) 358 if (!BN_bin2bn(buf + 1, field_len, x))
diff --git a/src/lib/libcrypto/ec/ecp_smpl.c b/src/lib/libcrypto/ec/ecp_smpl.c
index 7b3bb2364d..f6db4dc9b1 100644
--- a/src/lib/libcrypto/ec/ecp_smpl.c
+++ b/src/lib/libcrypto/ec/ecp_smpl.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: ecp_smpl.c,v 1.14 2015/02/08 22:25:03 miod Exp $ */ 1/* $OpenBSD: ecp_smpl.c,v 1.15 2015/02/09 15:49:22 jsing Exp $ */
2/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de> 2/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
3 * for the OpenSSL project. 3 * for the OpenSSL project.
4 * Includes code written by Bodo Moeller for the OpenSSL project. 4 * Includes code written by Bodo Moeller for the OpenSSL project.
@@ -188,8 +188,7 @@ ec_GFp_simple_group_set_curve(EC_GROUP * group,
188 return 0; 188 return 0;
189 } 189 }
190 BN_CTX_start(ctx); 190 BN_CTX_start(ctx);
191 tmp_a = BN_CTX_get(ctx); 191 if ((tmp_a = BN_CTX_get(ctx)) == NULL)
192 if (tmp_a == NULL)
193 goto err; 192 goto err;
194 193
195 /* group->field */ 194 /* group->field */
@@ -294,12 +293,15 @@ ec_GFp_simple_group_check_discriminant(const EC_GROUP * group, BN_CTX * ctx)
294 } 293 }
295 } 294 }
296 BN_CTX_start(ctx); 295 BN_CTX_start(ctx);
297 a = BN_CTX_get(ctx); 296 if ((a = BN_CTX_get(ctx)) == NULL)
298 b = BN_CTX_get(ctx); 297 goto err;
299 tmp_1 = BN_CTX_get(ctx); 298 if ((b = BN_CTX_get(ctx)) == NULL)
300 tmp_2 = BN_CTX_get(ctx); 299 goto err;
301 order = BN_CTX_get(ctx); 300 if ((tmp_1 = BN_CTX_get(ctx)) == NULL)
302 if (order == NULL) 301 goto err;
302 if ((tmp_2 = BN_CTX_get(ctx)) == NULL)
303 goto err;
304 if ((order = BN_CTX_get(ctx)) == NULL)
303 goto err; 305 goto err;
304 306
305 if (group->meth->field_decode) { 307 if (group->meth->field_decode) {
@@ -539,11 +541,13 @@ ec_GFp_simple_point_get_affine_coordinates(const EC_GROUP * group, const EC_POIN
539 return 0; 541 return 0;
540 } 542 }
541 BN_CTX_start(ctx); 543 BN_CTX_start(ctx);
542 Z = BN_CTX_get(ctx); 544 if ((Z = BN_CTX_get(ctx)) == NULL)
543 Z_1 = BN_CTX_get(ctx); 545 goto err;
544 Z_2 = BN_CTX_get(ctx); 546 if ((Z_1 = BN_CTX_get(ctx)) == NULL)
545 Z_3 = BN_CTX_get(ctx); 547 goto err;
546 if (Z_3 == NULL) 548 if ((Z_2 = BN_CTX_get(ctx)) == NULL)
549 goto err;
550 if ((Z_3 = BN_CTX_get(ctx)) == NULL)
547 goto err; 551 goto err;
548 552
549 /* transform (X, Y, Z) into (x, y) := (X/Z^2, Y/Z^3) */ 553 /* transform (X, Y, Z) into (x, y) := (X/Z^2, Y/Z^3) */
@@ -652,14 +656,19 @@ ec_GFp_simple_add(const EC_GROUP * group, EC_POINT * r, const EC_POINT * a, cons
652 return 0; 656 return 0;
653 } 657 }
654 BN_CTX_start(ctx); 658 BN_CTX_start(ctx);
655 n0 = BN_CTX_get(ctx); 659 if ((n0 = BN_CTX_get(ctx)) == NULL)
656 n1 = BN_CTX_get(ctx); 660 goto end;
657 n2 = BN_CTX_get(ctx); 661 if ((n1 = BN_CTX_get(ctx)) == NULL)
658 n3 = BN_CTX_get(ctx); 662 goto end;
659 n4 = BN_CTX_get(ctx); 663 if ((n2 = BN_CTX_get(ctx)) == NULL)
660 n5 = BN_CTX_get(ctx); 664 goto end;
661 n6 = BN_CTX_get(ctx); 665 if ((n3 = BN_CTX_get(ctx)) == NULL)
662 if (n6 == NULL) 666 goto end;
667 if ((n4 = BN_CTX_get(ctx)) == NULL)
668 goto end;
669 if ((n5 = BN_CTX_get(ctx)) == NULL)
670 goto end;
671 if ((n6 = BN_CTX_get(ctx)) == NULL)
663 goto end; 672 goto end;
664 673
665 /* 674 /*
@@ -834,11 +843,13 @@ ec_GFp_simple_dbl(const EC_GROUP * group, EC_POINT * r, const EC_POINT * a, BN_C
834 return 0; 843 return 0;
835 } 844 }
836 BN_CTX_start(ctx); 845 BN_CTX_start(ctx);
837 n0 = BN_CTX_get(ctx); 846 if ((n0 = BN_CTX_get(ctx)) == NULL)
838 n1 = BN_CTX_get(ctx); 847 goto err;
839 n2 = BN_CTX_get(ctx); 848 if ((n1 = BN_CTX_get(ctx)) == NULL)
840 n3 = BN_CTX_get(ctx); 849 goto err;
841 if (n3 == NULL) 850 if ((n2 = BN_CTX_get(ctx)) == NULL)
851 goto err;
852 if ((n3 = BN_CTX_get(ctx)) == NULL)
842 goto err; 853 goto err;
843 854
844 /* 855 /*
@@ -990,11 +1001,13 @@ ec_GFp_simple_is_on_curve(const EC_GROUP * group, const EC_POINT * point, BN_CTX
990 return -1; 1001 return -1;
991 } 1002 }
992 BN_CTX_start(ctx); 1003 BN_CTX_start(ctx);
993 rh = BN_CTX_get(ctx); 1004 if ((rh = BN_CTX_get(ctx)) == NULL)
994 tmp = BN_CTX_get(ctx); 1005 goto err;
995 Z4 = BN_CTX_get(ctx); 1006 if ((tmp = BN_CTX_get(ctx)) == NULL)
996 Z6 = BN_CTX_get(ctx); 1007 goto err;
997 if (Z6 == NULL) 1008 if ((Z4 = BN_CTX_get(ctx)) == NULL)
1009 goto err;
1010 if ((Z6 = BN_CTX_get(ctx)) == NULL)
998 goto err; 1011 goto err;
999 1012
1000 /* 1013 /*
@@ -1101,11 +1114,13 @@ ec_GFp_simple_cmp(const EC_GROUP * group, const EC_POINT * a, const EC_POINT * b
1101 return -1; 1114 return -1;
1102 } 1115 }
1103 BN_CTX_start(ctx); 1116 BN_CTX_start(ctx);
1104 tmp1 = BN_CTX_get(ctx); 1117 if ((tmp1 = BN_CTX_get(ctx)) == NULL)
1105 tmp2 = BN_CTX_get(ctx); 1118 goto end;
1106 Za23 = BN_CTX_get(ctx); 1119 if ((tmp2 = BN_CTX_get(ctx)) == NULL)
1107 Zb23 = BN_CTX_get(ctx); 1120 goto end;
1108 if (Zb23 == NULL) 1121 if ((Za23 = BN_CTX_get(ctx)) == NULL)
1122 goto end;
1123 if ((Zb23 = BN_CTX_get(ctx)) == NULL)
1109 goto end; 1124 goto end;
1110 1125
1111 /* 1126 /*
@@ -1184,9 +1199,9 @@ ec_GFp_simple_make_affine(const EC_GROUP * group, EC_POINT * point, BN_CTX * ctx
1184 return 0; 1199 return 0;
1185 } 1200 }
1186 BN_CTX_start(ctx); 1201 BN_CTX_start(ctx);
1187 x = BN_CTX_get(ctx); 1202 if ((x = BN_CTX_get(ctx)) == NULL)
1188 y = BN_CTX_get(ctx); 1203 goto err;
1189 if (y == NULL) 1204 if ((y = BN_CTX_get(ctx)) == NULL)
1190 goto err; 1205 goto err;
1191 1206
1192 if (!EC_POINT_get_affine_coordinates_GFp(group, point, x, y, ctx)) 1207 if (!EC_POINT_get_affine_coordinates_GFp(group, point, x, y, ctx))
@@ -1225,9 +1240,9 @@ ec_GFp_simple_points_make_affine(const EC_GROUP * group, size_t num, EC_POINT *
1225 return 0; 1240 return 0;
1226 } 1241 }
1227 BN_CTX_start(ctx); 1242 BN_CTX_start(ctx);
1228 tmp0 = BN_CTX_get(ctx); 1243 if ((tmp0 = BN_CTX_get(ctx)) == NULL)
1229 tmp1 = BN_CTX_get(ctx); 1244 goto err;
1230 if (tmp0 == NULL || tmp1 == NULL) 1245 if ((tmp1 = BN_CTX_get(ctx)) == NULL)
1231 goto err; 1246 goto err;
1232 1247
1233 /* 1248 /*
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-27 00:20:45 +0000