mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-05-20 09:18:15 +00:00
cc30db44ac
* 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>
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
// Copyright (C) 2017 Space Monkey, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package httpsig
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import (
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"crypto"
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"crypto/hmac"
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"errors"
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)
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// HMACSHA256 implements keyed HMAC over SHA256 digests
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var HMACSHA256 Algorithm = hmacSha256{}
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type hmacSha256 struct{}
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func (hmacSha256) Name() string {
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return "hmac-sha256"
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}
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func (a hmacSha256) Sign(key interface{}, data []byte) ([]byte, error) {
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k := toHMACKey(key)
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if k == nil {
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return nil, unsupportedAlgorithm(a)
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}
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return HMACSign(k, crypto.SHA256, data)
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}
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func (a hmacSha256) Verify(key interface{}, data, sig []byte) error {
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k := toHMACKey(key)
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if k == nil {
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return unsupportedAlgorithm(a)
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}
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return HMACVerify(k, crypto.SHA256, data, sig)
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}
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// HMACSign signs a digest of the data hashed using the provided hash and key.
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func HMACSign(key []byte, hash crypto.Hash, data []byte) ([]byte, error) {
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h := hmac.New(hash.New, key)
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if _, err := h.Write(data); err != nil {
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return nil, err
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}
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return h.Sum(nil), nil
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}
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// HMACVerify verifies a signed digest of the data hashed using the provided
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// hash and key.
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func HMACVerify(key []byte, hash crypto.Hash, data, sig []byte) error {
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actualSig, err := HMACSign(key, hash, data)
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if err != nil {
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return err
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}
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if !hmac.Equal(actualSig, sig) {
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return errors.New("hmac signature mismatch")
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}
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return nil
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}
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