105 lines
2.1 KiB
Go
105 lines
2.1 KiB
Go
// 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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"bytes"
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"crypto/rand"
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"io"
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"io/ioutil"
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"testing"
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"golang.org/x/crypto/nacl/secretbox"
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)
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func TestEncryptDecryptGCM(t *testing.T) {
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randomKey := &[32]byte{}
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_, err := io.ReadFull(rand.Reader, randomKey[:])
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if err != nil {
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t.Fatal(err)
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}
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gcmTests := []struct {
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plaintext []byte
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key *[32]byte
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}{
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{
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plaintext: []byte("Hello, world!"),
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key: randomKey,
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},
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}
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for _, tt := range gcmTests {
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ciphertext, err := Encrypt(tt.plaintext, tt.key)
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if err != nil {
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t.Fatal(err)
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}
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plaintext, err := Decrypt(ciphertext, tt.key)
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(plaintext, tt.plaintext) {
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t.Errorf("plaintexts don't match")
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}
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ciphertext[0] ^= 0xff
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plaintext, err = Decrypt(ciphertext, tt.key)
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if err == nil {
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t.Errorf("gcmOpen should not have worked, but did")
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}
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}
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}
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func BenchmarkAESGCM(b *testing.B) {
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randomKey := &[32]byte{}
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_, err := io.ReadFull(rand.Reader, randomKey[:])
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if err != nil {
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b.Fatal(err)
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}
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data, err := ioutil.ReadFile("testdata/big")
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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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Encrypt(data, randomKey)
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}
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}
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func BenchmarkSecretbox(b *testing.B) {
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randomKey := &[32]byte{}
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_, err := io.ReadFull(rand.Reader, randomKey[:])
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if err != nil {
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b.Fatal(err)
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}
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nonce := &[24]byte{}
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_, err = io.ReadFull(rand.Reader, nonce[:])
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if err != nil {
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b.Fatal(err)
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}
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data, err := ioutil.ReadFile("testdata/big")
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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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secretbox.Seal(nil, data, nonce, randomKey)
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}
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}
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