// Copyright 2018 The CUE Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sha512

import "crypto/sha512"

const (
	// Size is the size, in bytes, of a SHA-512 checksum.
	Size = 64

	// Size224 is the size, in bytes, of a SHA-512/224 checksum.
	Size224 = 28

	// Size256 is the size, in bytes, of a SHA-512/256 checksum.
	Size256 = 32

	// Size384 is the size, in bytes, of a SHA-384 checksum.
	Size384 = 48

	// BlockSize is the block size, in bytes, of the SHA-512/224,
	// SHA-512/256, SHA-384 and SHA-512 hash functions.
	BlockSize = 128
)

// Sum512 returns the SHA512 checksum of the data.
func Sum512(data []byte) []byte {
	a := sha512.Sum512(data)
	return a[:]
}

// Sum384 returns the SHA384 checksum of the data.
func Sum384(data []byte) (sum384 []byte) {
	a := sha512.Sum384(data)
	return a[:]
}

// Sum512_224 returns the Sum512/224 checksum of the data.
func Sum512_224(data []byte) (sum224 []byte) {
	a := sha512.Sum512_224(data)
	return a[:]
}

// Sum512_256 returns the Sum512/256 checksum of the data.
func Sum512_256(data []byte) (sum256 []byte) {
	a := sha512.Sum512_256(data)
	return a[:]
}