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author | tb <> | 2023-07-26 12:26:48 +0000 |
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committer | tb <> | 2023-07-26 12:26:48 +0000 |
commit | 9d7ceead35e184d56cd85a5b4741828341b03d05 (patch) | |
tree | 9e55adae7732077c513174c0dac83fae27a9798c | |
parent | 51094273f9913bba740b53ddcc63a0b674702656 (diff) | |
download | openbsd-9d7ceead35e184d56cd85a5b4741828341b03d05.tar.gz openbsd-9d7ceead35e184d56cd85a5b4741828341b03d05.tar.bz2 openbsd-9d7ceead35e184d56cd85a5b4741828341b03d05.zip |
Unindent a big block in EC_GROUP_get_affine_coordinates()
-rw-r--r-- | src/lib/libcrypto/ec/ecp_smpl.c | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/src/lib/libcrypto/ec/ecp_smpl.c b/src/lib/libcrypto/ec/ecp_smpl.c index add1348372..f591fa0267 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 1.53 2023/07/26 12:24:28 tb Exp $ */ | 1 | /* $OpenBSD: ecp_smpl.c,v 1.54 2023/07/26 12:26:48 tb 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. |
@@ -417,47 +417,49 @@ ec_GFp_simple_point_get_affine_coordinates(const EC_GROUP *group, | |||
417 | goto err; | 417 | goto err; |
418 | if (!ec_decode_scalar(group, y, &point->Y, ctx)) | 418 | if (!ec_decode_scalar(group, y, &point->Y, ctx)) |
419 | goto err; | 419 | goto err; |
420 | goto done; | ||
421 | } | ||
422 | |||
423 | if (BN_mod_inverse_ct(Z_1, z, &group->field, ctx) == NULL) { | ||
424 | ECerror(ERR_R_BN_LIB); | ||
425 | goto err; | ||
426 | } | ||
427 | if (group->meth->field_encode == NULL) { | ||
428 | /* field_sqr works on standard representation */ | ||
429 | if (!group->meth->field_sqr(group, Z_2, Z_1, ctx)) | ||
430 | goto err; | ||
420 | } else { | 431 | } else { |
421 | if (BN_mod_inverse_ct(Z_1, z, &group->field, ctx) == NULL) { | 432 | if (!BN_mod_sqr(Z_2, Z_1, &group->field, ctx)) |
422 | ECerror(ERR_R_BN_LIB); | ||
423 | goto err; | 433 | goto err; |
424 | } | 434 | } |
435 | |||
436 | if (x != NULL) { | ||
437 | /* | ||
438 | * in the Montgomery case, field_mul will cancel out | ||
439 | * Montgomery factor in X: | ||
440 | */ | ||
441 | if (!group->meth->field_mul(group, x, &point->X, Z_2, ctx)) | ||
442 | goto err; | ||
443 | } | ||
444 | if (y != NULL) { | ||
425 | if (group->meth->field_encode == NULL) { | 445 | if (group->meth->field_encode == NULL) { |
426 | /* field_sqr works on standard representation */ | 446 | /* field_mul works on standard representation */ |
427 | if (!group->meth->field_sqr(group, Z_2, Z_1, ctx)) | 447 | if (!group->meth->field_mul(group, Z_3, Z_2, Z_1, ctx)) |
428 | goto err; | 448 | goto err; |
429 | } else { | 449 | } else { |
430 | if (!BN_mod_sqr(Z_2, Z_1, &group->field, ctx)) | 450 | if (!BN_mod_mul(Z_3, Z_2, Z_1, &group->field, ctx)) |
431 | goto err; | 451 | goto err; |
432 | } | 452 | } |
433 | 453 | ||
434 | if (x != NULL) { | 454 | /* |
435 | /* | 455 | * in the Montgomery case, field_mul will cancel out |
436 | * in the Montgomery case, field_mul will cancel out | 456 | * Montgomery factor in Y: |
437 | * Montgomery factor in X: | 457 | */ |
438 | */ | 458 | if (!group->meth->field_mul(group, y, &point->Y, Z_3, ctx)) |
439 | if (!group->meth->field_mul(group, x, &point->X, Z_2, ctx)) | 459 | goto err; |
440 | goto err; | ||
441 | } | ||
442 | if (y != NULL) { | ||
443 | if (group->meth->field_encode == NULL) { | ||
444 | /* field_mul works on standard representation */ | ||
445 | if (!group->meth->field_mul(group, Z_3, Z_2, Z_1, ctx)) | ||
446 | goto err; | ||
447 | } else { | ||
448 | if (!BN_mod_mul(Z_3, Z_2, Z_1, &group->field, ctx)) | ||
449 | goto err; | ||
450 | } | ||
451 | |||
452 | /* | ||
453 | * in the Montgomery case, field_mul will cancel out | ||
454 | * Montgomery factor in Y: | ||
455 | */ | ||
456 | if (!group->meth->field_mul(group, y, &point->Y, Z_3, ctx)) | ||
457 | goto err; | ||
458 | } | ||
459 | } | 460 | } |
460 | 461 | ||
462 | done: | ||
461 | ret = 1; | 463 | ret = 1; |
462 | 464 | ||
463 | err: | 465 | err: |