woodpecker/vendor/github.com/go-ap/httpsig/rsa.go
Anbraten cc30db44ac
Use asym key to sign webhooks (#916)
* use async key pair for webhooks

* fix tests

* fix linter

* improve code

* add key pair to database

* undo some changes

* more undo

* improve docs

* add api-endpoint

* add signaturne api endpoint

* fix error

* fix linting and test

* fix lint

* add test

* migration 006

* no need for migration

* replace httsign lib

* fix lint

Co-authored-by: 6543 <6543@obermui.de>
2022-06-01 20:06:27 +02:00

92 lines
2.3 KiB
Go

// Copyright (C) 2017 Space Monkey, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package httpsig
import (
"crypto"
"crypto/rsa"
)
// RSASHA1 implements RSA PKCS1v15 signatures over a SHA1 digest
var RSASHA1 Algorithm = rsaSha1{}
type rsaSha1 struct{}
func (rsaSha1) Name() string {
return "rsa-sha1"
}
func (a rsaSha1) Sign(key interface{}, data []byte) ([]byte, error) {
k := toRSAPrivateKey(key)
if k == nil {
return nil, unsupportedAlgorithm(a)
}
return RSASign(k, crypto.SHA1, data)
}
func (a rsaSha1) Verify(key interface{}, data, sig []byte) error {
k := toRSAPublicKey(key)
if k == nil {
return unsupportedAlgorithm(a)
}
return RSAVerify(k, crypto.SHA1, data, sig)
}
// RSASHA256 implements RSA PKCS1v15 signatures over a SHA256 digest
var RSASHA256 Algorithm = rsaSha256{}
type rsaSha256 struct{}
func (rsaSha256) Name() string {
return "rsa-sha256"
}
func (a rsaSha256) Sign(key interface{}, data []byte) ([]byte, error) {
k := toRSAPrivateKey(key)
if k == nil {
return nil, unsupportedAlgorithm(a)
}
return RSASign(k, crypto.SHA256, data)
}
func (a rsaSha256) Verify(key interface{}, data, sig []byte) error {
k := toRSAPublicKey(key)
if k == nil {
return unsupportedAlgorithm(a)
}
return RSAVerify(k, crypto.SHA256, data, sig)
}
// RSASign signs a digest of the data hashed using the provided hash
func RSASign(key *rsa.PrivateKey, hash crypto.Hash, data []byte) (
signature []byte, err error) {
h := hash.New()
if _, err := h.Write(data); err != nil {
return nil, err
}
return rsa.SignPKCS1v15(Rand, key, hash, h.Sum(nil))
}
// RSAVerify verifies a signed digest of the data hashed using the provided hash
func RSAVerify(key *rsa.PublicKey, hash crypto.Hash, data, sig []byte) (
err error) {
h := hash.New()
if _, err := h.Write(data); err != nil {
return err
}
return rsa.VerifyPKCS1v15(key, hash, h.Sum(nil), sig)
}