1 // Copyright 2022, The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 //! BoringSSL-based implementation of constant-time comparisons. 16 use kmr_common::crypto; 17 18 /// Constant time comparator based on BoringSSL. 19 #[derive(Clone)] 20 pub struct BoringEq; 21 22 impl crypto::ConstTimeEq for BoringEq { eq(&self, left: &[u8], right: &[u8]) -> bool23 fn eq(&self, left: &[u8], right: &[u8]) -> bool { 24 if left.len() != right.len() { 25 return false; 26 } 27 openssl::memcmp::eq(left, right) 28 } 29 } 30