| // Copyright 2017 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| "golang.org/x/crypto/nacl/auth" |
| // Load your secret key from a safe place and reuse it across multiple |
| // Sum calls. (Obviously don't use this example key for anything |
| // real.) If you want to convert a passphrase to a key, use a suitable |
| // package like bcrypt or scrypt. |
| secretKeyBytes, err := hex.DecodeString("6368616e676520746869732070617373776f726420746f206120736563726574") |
| copy(secretKey[:], secretKeyBytes) |
| mac := auth.Sum([]byte("hello world"), &secretKey) |
| result := auth.Verify(mac[:], []byte("hello world"), &secretKey) |
| badResult := auth.Verify(mac[:], []byte("different message"), &secretKey) |
| // Output: eca5a521f3d77b63f567fb0cb6f5f2d200641bc8dada42f60c5f881260c30317 |