1// Copyright 2016 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package pem_test
6
7import (
8	"crypto/x509"
9	"encoding/pem"
10	"fmt"
11	"log"
12	"os"
13)
14
15func ExampleDecode() {
16	var pubPEMData = []byte(`
17-----BEGIN PUBLIC KEY-----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30-----END PUBLIC KEY-----
31and some more`)
32
33	block, rest := pem.Decode(pubPEMData)
34	if block == nil || block.Type != "PUBLIC KEY" {
35		log.Fatal("failed to decode PEM block containing public key")
36	}
37
38	pub, err := x509.ParsePKIXPublicKey(block.Bytes)
39	if err != nil {
40		log.Fatal(err)
41	}
42
43	fmt.Printf("Got a %T, with remaining data: %q", pub, rest)
44	// Output: Got a *rsa.PublicKey, with remaining data: "and some more"
45}
46
47func ExampleEncode() {
48	block := &pem.Block{
49		Type: "MESSAGE",
50		Headers: map[string]string{
51			"Animal": "Gopher",
52		},
53		Bytes: []byte("test"),
54	}
55
56	if err := pem.Encode(os.Stdout, block); err != nil {
57		log.Fatal(err)
58	}
59	// Output:
60	// -----BEGIN MESSAGE-----
61	// Animal: Gopher
62	//
63	// dGVzdA==
64	// -----END MESSAGE-----
65}
66