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49a714d1a4
Also bring in SSE3 optimized public domain implementation of SHA1 from Intel ``FIPS PUB 180-1``
82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
// +build ignore
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//
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// Mini Object Storage, (C) 2015 Minio, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package main
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import (
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"crypto/sha512"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"time"
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sha512intel "github.com/minio-io/minio/pkg/utils/crypto/sha512"
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)
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func SumIntel(reader io.Reader) ([]byte, error) {
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h := sha512intel.New()
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var err error
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for err == nil {
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length := 0
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byteBuffer := make([]byte, 1024*1024)
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length, err = reader.Read(byteBuffer)
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byteBuffer = byteBuffer[0:length]
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h.Write(byteBuffer)
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}
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if err != io.EOF {
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return nil, err
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}
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return h.Sum(nil), nil
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}
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func Sum(reader io.Reader) ([]byte, error) {
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k := sha512.New()
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var err error
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for err == nil {
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length := 0
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byteBuffer := make([]byte, 1024*1024)
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length, err = reader.Read(byteBuffer)
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byteBuffer = byteBuffer[0:length]
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k.Write(byteBuffer)
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}
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if err != io.EOF {
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return nil, err
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}
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return k.Sum(nil), nil
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}
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func main() {
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fmt.Println("-- start")
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file1, _ := os.Open("filename1")
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defer file1.Close()
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stark := time.Now()
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sum, _ := Sum(file1)
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endk := time.Since(stark)
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file2, _ := os.Open("filename2")
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defer file2.Close()
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starth := time.Now()
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sumSSE, _ := SumIntel(file2)
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endh := time.Since(starth)
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fmt.Println("std(", endk, ")", "ssse3(", endh, ")")
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fmt.Println(hex.EncodeToString(sum), hex.EncodeToString(sumSSE))
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}
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