| // Copyright 2019 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. |
| |
| package note_test |
| |
| import ( |
| "fmt" |
| "io" |
| "os" |
| |
| "golang.org/x/mod/sumdb/note" |
| ) |
| |
| func ExampleSign() { |
| skey := "PRIVATE+KEY+PeterNeumann+c74f20a3+AYEKFALVFGyNhPJEMzD1QIDr+Y7hfZx09iUvxdXHKDFz" |
| text := "If you think cryptography is the answer to your problem,\n" + |
| "then you don't know what your problem is.\n" |
| |
| signer, err := note.NewSigner(skey) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| |
| msg, err := note.Sign(¬e.Note{Text: text}, signer) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| os.Stdout.Write(msg) |
| |
| // Output: |
| // If you think cryptography is the answer to your problem, |
| // then you don't know what your problem is. |
| // |
| // — PeterNeumann x08go/ZJkuBS9UG/SffcvIAQxVBtiFupLLr8pAcElZInNIuGUgYN1FFYC2pZSNXgKvqfqdngotpRZb6KE6RyyBwJnAM= |
| } |
| |
| func ExampleOpen() { |
| vkey := "PeterNeumann+c74f20a3+ARpc2QcUPDhMQegwxbzhKqiBfsVkmqq/LDE4izWy10TW" |
| msg := []byte("If you think cryptography is the answer to your problem,\n" + |
| "then you don't know what your problem is.\n" + |
| "\n" + |
| "— PeterNeumann x08go/ZJkuBS9UG/SffcvIAQxVBtiFupLLr8pAcElZInNIuGUgYN1FFYC2pZSNXgKvqfqdngotpRZb6KE6RyyBwJnAM=\n") |
| |
| verifier, err := note.NewVerifier(vkey) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| verifiers := note.VerifierList(verifier) |
| |
| n, err := note.Open(msg, verifiers) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| fmt.Printf("%s (%08x):\n%s", n.Sigs[0].Name, n.Sigs[0].Hash, n.Text) |
| |
| // Output: |
| // PeterNeumann (c74f20a3): |
| // If you think cryptography is the answer to your problem, |
| // then you don't know what your problem is. |
| } |
| |
| var rand = struct { |
| Reader io.Reader |
| }{ |
| zeroReader{}, |
| } |
| |
| type zeroReader struct{} |
| |
| func (zeroReader) Read(buf []byte) (int, error) { |
| for i := range buf { |
| buf[i] = 0 |
| } |
| return len(buf), nil |
| } |
| |
| func ExampleSign_add_signatures() { |
| vkey := "PeterNeumann+c74f20a3+ARpc2QcUPDhMQegwxbzhKqiBfsVkmqq/LDE4izWy10TW" |
| msg := []byte("If you think cryptography is the answer to your problem,\n" + |
| "then you don't know what your problem is.\n" + |
| "\n" + |
| "— PeterNeumann x08go/ZJkuBS9UG/SffcvIAQxVBtiFupLLr8pAcElZInNIuGUgYN1FFYC2pZSNXgKvqfqdngotpRZb6KE6RyyBwJnAM=\n") |
| |
| verifier, err := note.NewVerifier(vkey) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| verifiers := note.VerifierList(verifier) |
| |
| n, err := note.Open([]byte(msg), verifiers) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| |
| skey, vkey, err := note.GenerateKey(rand.Reader, "EnochRoot") |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| _ = vkey // give to verifiers |
| |
| me, err := note.NewSigner(skey) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| |
| msg, err = note.Sign(n, me) |
| if err != nil { |
| fmt.Println(err) |
| return |
| } |
| os.Stdout.Write(msg) |
| |
| // Output: |
| // If you think cryptography is the answer to your problem, |
| // then you don't know what your problem is. |
| // |
| // — PeterNeumann x08go/ZJkuBS9UG/SffcvIAQxVBtiFupLLr8pAcElZInNIuGUgYN1FFYC2pZSNXgKvqfqdngotpRZb6KE6RyyBwJnAM= |
| // — EnochRoot rwz+eBzmZa0SO3NbfRGzPCpDckykFXSdeX+MNtCOXm2/5n2tiOHp+vAF1aGrQ5ovTG01oOTGwnWLox33WWd1RvMc+QQ= |
| } |