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Golang implementation ANProto: the Authenticated and Non-networked protocol or ANother protocol
1package goan
2
3import (
4 "crypto/sha256"
5 "encoding/base64"
6 "testing"
7)
8
9func TestGenHashSignOpen(t *testing.T) {
10 k, err := Gen()
11 if err != nil {
12 t.Fatalf("Gen error: %v", err)
13 }
14 if len(k) != 132 {
15 t.Fatalf("expected key length 132 got %d", len(k))
16 }
17
18 // verify hash function still works
19 h := Hash("hello")
20 exph := sha256.Sum256([]byte("hello"))
21 expb64 := base64.StdEncoding.EncodeToString(exph[:])
22 if h != expb64 {
23 t.Fatalf("hash mismatch")
24 }
25
26 // Sign the plain text message "hello" (not its hash)
27 signed, err := Sign("hello", k)
28 if err != nil {
29 t.Fatalf("sign error: %v", err)
30 }
31 if signed[:44] != k[:44] {
32 t.Fatalf("signed must start with pub key")
33 }
34
35 opened, err := Open(signed)
36 if err != nil {
37 t.Fatalf("open error: %v", err)
38 }
39 // For compatibility with example.js, the test strips the first 13 bytes (timestamp)
40 if len(opened) < 13 {
41 t.Fatalf("opened too short to strip timestamp")
42 }
43 payload := opened[13:]
44 if payload != "hello" {
45 t.Fatalf("opened payload must equal 'hello', got: %q", payload)
46 }
47}