diff options
Diffstat (limited to 'openssl/crypto/ec/ec_check.c')
| -rw-r--r-- | openssl/crypto/ec/ec_check.c | 115 |
1 files changed, 56 insertions, 59 deletions
diff --git a/openssl/crypto/ec/ec_check.c b/openssl/crypto/ec/ec_check.c index 0e316b4b3..d3f534999 100644 --- a/openssl/crypto/ec/ec_check.c +++ b/openssl/crypto/ec/ec_check.c @@ -7,7 +7,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -57,67 +57,64 @@ #include <openssl/err.h> int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx) - { - int ret = 0; - BIGNUM *order; - BN_CTX *new_ctx = NULL; - EC_POINT *point = NULL; +{ + int ret = 0; + BIGNUM *order; + BN_CTX *new_ctx = NULL; + EC_POINT *point = NULL; - if (ctx == NULL) - { - ctx = new_ctx = BN_CTX_new(); - if (ctx == NULL) - { - ECerr(EC_F_EC_GROUP_CHECK, ERR_R_MALLOC_FAILURE); - goto err; - } - } - BN_CTX_start(ctx); - if ((order = BN_CTX_get(ctx)) == NULL) goto err; + if (ctx == NULL) { + ctx = new_ctx = BN_CTX_new(); + if (ctx == NULL) { + ECerr(EC_F_EC_GROUP_CHECK, ERR_R_MALLOC_FAILURE); + goto err; + } + } + BN_CTX_start(ctx); + if ((order = BN_CTX_get(ctx)) == NULL) + goto err; - /* check the discriminant */ - if (!EC_GROUP_check_discriminant(group, ctx)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_DISCRIMINANT_IS_ZERO); - goto err; - } + /* check the discriminant */ + if (!EC_GROUP_check_discriminant(group, ctx)) { + ECerr(EC_F_EC_GROUP_CHECK, EC_R_DISCRIMINANT_IS_ZERO); + goto err; + } - /* check the generator */ - if (group->generator == NULL) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_GENERATOR); - goto err; - } - if (!EC_POINT_is_on_curve(group, group->generator, ctx)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_POINT_IS_NOT_ON_CURVE); - goto err; - } + /* check the generator */ + if (group->generator == NULL) { + ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_GENERATOR); + goto err; + } + if (!EC_POINT_is_on_curve(group, group->generator, ctx)) { + ECerr(EC_F_EC_GROUP_CHECK, EC_R_POINT_IS_NOT_ON_CURVE); + goto err; + } - /* check the order of the generator */ - if ((point = EC_POINT_new(group)) == NULL) goto err; - if (!EC_GROUP_get_order(group, order, ctx)) goto err; - if (BN_is_zero(order)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_ORDER); - goto err; - } - - if (!EC_POINT_mul(group, point, order, NULL, NULL, ctx)) goto err; - if (!EC_POINT_is_at_infinity(group, point)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_INVALID_GROUP_ORDER); - goto err; - } + /* check the order of the generator */ + if ((point = EC_POINT_new(group)) == NULL) + goto err; + if (!EC_GROUP_get_order(group, order, ctx)) + goto err; + if (BN_is_zero(order)) { + ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_ORDER); + goto err; + } - ret = 1; + if (!EC_POINT_mul(group, point, order, NULL, NULL, ctx)) + goto err; + if (!EC_POINT_is_at_infinity(group, point)) { + ECerr(EC_F_EC_GROUP_CHECK, EC_R_INVALID_GROUP_ORDER); + goto err; + } -err: - if (ctx != NULL) - BN_CTX_end(ctx); - if (new_ctx != NULL) - BN_CTX_free(new_ctx); - if (point) - EC_POINT_free(point); - return ret; - } + ret = 1; + + err: + if (ctx != NULL) + BN_CTX_end(ctx); + if (new_ctx != NULL) + BN_CTX_free(new_ctx); + if (point) + EC_POINT_free(point); + return ret; +} |