diff options
Diffstat (limited to 'deps/openssl/openssl/crypto/ec/ec2_oct.c')
| -rw-r--r-- | deps/openssl/openssl/crypto/ec/ec2_oct.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/deps/openssl/openssl/crypto/ec/ec2_oct.c b/deps/openssl/openssl/crypto/ec/ec2_oct.c index 0867f994ea..ee300518d6 100644 --- a/deps/openssl/openssl/crypto/ec/ec2_oct.c +++ b/deps/openssl/openssl/crypto/ec/ec2_oct.c @@ -1,5 +1,5 @@ /* - * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2011-2019 The OpenSSL Project Authors. All Rights Reserved. * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved * * Licensed under the OpenSSL license (the "License"). You may not use @@ -237,7 +237,7 @@ int ec_GF2m_simple_oct2point(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) { point_conversion_form_t form; - int y_bit; + int y_bit, m; BN_CTX *new_ctx = NULL; BIGNUM *x, *y, *yxi; size_t field_len, enc_len; @@ -270,7 +270,8 @@ int ec_GF2m_simple_oct2point(const EC_GROUP *group, EC_POINT *point, return EC_POINT_set_to_infinity(group, point); } - field_len = (EC_GROUP_get_degree(group) + 7) / 8; + m = EC_GROUP_get_degree(group); + field_len = (m + 7) / 8; enc_len = (form == POINT_CONVERSION_COMPRESSED) ? 1 + field_len : 1 + 2 * field_len; @@ -295,7 +296,7 @@ int ec_GF2m_simple_oct2point(const EC_GROUP *group, EC_POINT *point, if (!BN_bin2bn(buf + 1, field_len, x)) goto err; - if (BN_ucmp(x, group->field) >= 0) { + if (BN_num_bits(x) > m) { ECerr(EC_F_EC_GF2M_SIMPLE_OCT2POINT, EC_R_INVALID_ENCODING); goto err; } @@ -306,7 +307,7 @@ int ec_GF2m_simple_oct2point(const EC_GROUP *group, EC_POINT *point, } else { if (!BN_bin2bn(buf + 1 + field_len, field_len, y)) goto err; - if (BN_ucmp(y, group->field) >= 0) { + if (BN_num_bits(y) > m) { ECerr(EC_F_EC_GF2M_SIMPLE_OCT2POINT, EC_R_INVALID_ENCODING); goto err; } |