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