1 // Copyright 2018 The CUE Authors 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 // Copyright 2018 The Go Authors. All rights reserved. 16 // Use of this source code is governed by a BSD-style 17 // license that can be found in the LICENSE file. 18 19 package sha256 20 21 import "crypto/sha256" 22 23 // The size of a SHA256 checksum in bytes. 24 const Size = 32 25 26 // The size of a SHA224 checksum in bytes. 27 const Size224 = 28 28 29 // The blocksize of SHA256 and SHA224 in bytes. 30 const BlockSize = 64 31 32 // Sum256 returns the SHA256 checksum of the data. 33 func Sum256(data []byte) []byte { 34 a := sha256.Sum256(data) 35 return a[:] 36 } 37 38 // Sum224 returns the SHA224 checksum of the data. 39 func Sum224(data []byte) (sum224 []byte) { 40 a := sha256.Sum224(data) 41 return a[:] 42 } 43