92 lines
2.1 KiB
Go
92 lines
2.1 KiB
Go
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// cryptopasta - basic cryptography examples
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//
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// Written in 2015 by George Tankersley <george.tankersley@gmail.com>
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//
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// To the extent possible under law, the author(s) have dedicated all copyright
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// and related and neighboring rights to this software to the public domain
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// worldwide. This software is distributed without any warranty.
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//
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// You should have received a copy of the CC0 Public Domain Dedication along
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// with this software. If not, see // <http://creativecommons.org/publicdomain/zero/1.0/>.
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package cryptopasta
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import (
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"crypto/sha256"
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"crypto/sha512"
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"encoding/hex"
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"fmt"
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"io/ioutil"
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"os"
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"testing"
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)
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func TestPasswordHashing(t *testing.T) {
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bcryptTests := []struct {
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plaintext []byte
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hash []byte
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}{
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{
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plaintext: []byte("password"),
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hash: []byte("$2a$14$uALAQb/Lwl59oHVbuUa5m.xEFmQBc9ME/IiSgJK/VHtNJJXASCDoS"),
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},
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}
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for _, tt := range bcryptTests {
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hashed, err := HashPassword(tt.plaintext)
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if err != nil {
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t.Error(err)
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}
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if err = CheckPasswordHash(hashed, tt.plaintext); err != nil {
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t.Error(err)
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}
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}
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}
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// Benchmarks SHA256 on 16K of random data.
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func BenchmarkSHA256(b *testing.B) {
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data, err := ioutil.ReadFile("testdata/random")
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if err != nil {
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b.Fatal(err)
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}
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b.SetBytes(int64(len(data)))
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for i := 0; i < b.N; i++ {
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_ = sha256.Sum256(data)
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}
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}
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// Benchmarks SHA512/256 on 16K of random data.
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func BenchmarkSHA512_256(b *testing.B) {
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data, err := ioutil.ReadFile("testdata/random")
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if err != nil {
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b.Fatal(err)
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}
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b.SetBytes(int64(len(data)))
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for i := 0; i < b.N; i++ {
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_ = sha512.Sum512_256(data)
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}
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}
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func BenchmarkBcrypt(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_, err := HashPassword([]byte("thisisareallybadpassword"))
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if err != nil {
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b.Error(err)
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break
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}
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}
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}
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func ExampleHash() {
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tag := "hashing file for lookup key"
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contents, err := ioutil.ReadFile("testdata/random")
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if err != nil {
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fmt.Printf("could not read file: %v\n", err)
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os.Exit(1)
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}
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digest := Hash(tag, contents)
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fmt.Println(hex.EncodeToString(digest))
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// Output: 9f4c795d8ae5c207f19184ccebee6a606c1fdfe509c793614066d613580f03e1
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}
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