github.com/braveheart12/insolar-09-08-19@v0.8.7/platformpolicy/internal/hash/wrapper.go (about)

     1  /*
     2   *    Copyright 2019 Insolar Technologies
     3   *
     4   *    Licensed under the Apache License, Version 2.0 (the "License");
     5   *    you may not use this file except in compliance with the License.
     6   *    You may obtain a copy of the License at
     7   *
     8   *        http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   *    Unless required by applicable law or agreed to in writing, software
    11   *    distributed under the License is distributed on an "AS IS" BASIS,
    12   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *    See the License for the specific language governing permissions and
    14   *    limitations under the License.
    15   */
    16  
    17  package hash
    18  
    19  import (
    20  	"hash"
    21  )
    22  
    23  type hashWrapper struct {
    24  	hash    hash.Hash
    25  	sumFunc func([]byte) []byte
    26  }
    27  
    28  func (h *hashWrapper) Write(p []byte) (n int, err error) {
    29  	return h.hash.Write(p)
    30  }
    31  
    32  func (h *hashWrapper) Sum(b []byte) []byte {
    33  	return h.hash.Sum(b)
    34  }
    35  
    36  func (h *hashWrapper) Reset() {
    37  	h.hash.Reset()
    38  }
    39  
    40  func (h *hashWrapper) Size() int {
    41  	return h.hash.Size()
    42  }
    43  
    44  func (h *hashWrapper) BlockSize() int {
    45  	return h.hash.BlockSize()
    46  }
    47  
    48  func (h *hashWrapper) Hash(b []byte) []byte {
    49  	return h.sumFunc(b)[:]
    50  }