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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package activitypub
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"crypto/x509"
"encoding/pem"
"regexp"
"testing"
"github.com/stretchr/testify/assert"
)
func TestKeygen(t *testing.T) {
priv, pub, err := GenerateKeyPair()
assert.NoError(t, err)
assert.NotEmpty(t, priv)
assert.NotEmpty(t, pub)
assert.Regexp(t, regexp.MustCompile("^-----BEGIN RSA PRIVATE KEY-----.*"), priv)
assert.Regexp(t, regexp.MustCompile("^-----BEGIN PUBLIC KEY-----.*"), pub)
}
func TestSignUsingKeys(t *testing.T) {
priv, pub, err := GenerateKeyPair()
assert.NoError(t, err)
privPem, _ := pem.Decode([]byte(priv))
if privPem == nil || privPem.Type != "RSA PRIVATE KEY" {
t.Fatal("key is wrong type")
}
privParsed, err := x509.ParsePKCS1PrivateKey(privPem.Bytes)
assert.NoError(t, err)
pubPem, _ := pem.Decode([]byte(pub))
if pubPem == nil || pubPem.Type != "PUBLIC KEY" {
t.Fatal("key failed to decode")
}
pubParsed, err := x509.ParsePKIXPublicKey(pubPem.Bytes)
assert.NoError(t, err)
// Sign
msg := "activity pub is great!"
h := sha256.New()
h.Write([]byte(msg))
d := h.Sum(nil)
sig, err := rsa.SignPKCS1v15(rand.Reader, privParsed, crypto.SHA256, d)
assert.NoError(t, err)
// Verify
err = rsa.VerifyPKCS1v15(pubParsed.(*rsa.PublicKey), crypto.SHA256, d, sig)
assert.NoError(t, err)
}
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