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// Copyright 2024 OpenPubkey
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package util
import (
"encoding/base64"
)
var rawURLEncoding = base64.RawURLEncoding.Strict()
func Base64EncodeForJWT(decoded []byte) []byte {
return base64Encode(decoded, rawURLEncoding)
}
func Base64DecodeForJWT(encoded []byte) ([]byte, error) {
return base64Decode(encoded, rawURLEncoding)
}
func base64Encode(decoded []byte, encoding *base64.Encoding) []byte {
encoded := make([]byte, encoding.EncodedLen(len(decoded)))
encoding.Encode(encoded, decoded)
return encoded
}
func base64Decode(encoded []byte, encoding *base64.Encoding) ([]byte, error) {
decoded := make([]byte, encoding.DecodedLen(len(encoded)))
n, err := encoding.Decode(decoded, encoded)
if err != nil {
return nil, err
}
return decoded[:n], nil
}
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