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hash.go
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hash.go
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// ISC License
//
// Copyright (c) 2017-2018 The DashX developers
// Copyright (c) 2016 The Dash developers
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
package utils
import "io"
type Hash interface {
// Write (via the embedded io.Writer interface) adds more
// data to the running hash. It never returns an error.
io.Writer
// Reset resets the Hash to its initial state.
Reset()
// Sum appends the current hash to dst and returns the result
// as a slice. It does not change the underlying hash state.
Sum(dst []byte) []byte
// Size returns the number of bytes Sum will return.
Size() int
// BlockSize returns the hash's underlying block size.
// The Write method must be able to accept any amount
// of data, but it may operate more efficiently if
// all writes are a multiple of the block size.
BlockSize() int
}