go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/server/secrets/utils.go (about)

     1  // Copyright 2021 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package secrets
    16  
    17  import (
    18  	"context"
    19  	"encoding/base64"
    20  )
    21  
    22  // URLSafeEncrypt encrypts plaintext to an encrypted, URL safe string.
    23  func URLSafeEncrypt(ctx context.Context, plaintext, additionalData []byte) (string, error) {
    24  	encryptedBytes, err := Encrypt(ctx, plaintext, additionalData)
    25  	if err != nil {
    26  		return "", err
    27  	}
    28  
    29  	encryptedString := base64.RawURLEncoding.EncodeToString(encryptedBytes)
    30  	return encryptedString, nil
    31  }
    32  
    33  // URLSafeDecrypt decrypts the plaintext from the string generated by
    34  // URLSafeEncrypt with the same additional data.
    35  func URLSafeDecrypt(ctx context.Context, encryptedString string, additionalData []byte) ([]byte, error) {
    36  	encryptedBytes, err := base64.RawURLEncoding.DecodeString(encryptedString)
    37  	if err != nil {
    38  		return nil, err
    39  	}
    40  
    41  	plaintext, err := Decrypt(ctx, encryptedBytes, additionalData)
    42  	if err != nil {
    43  		return nil, err
    44  	}
    45  
    46  	return plaintext, nil
    47  }