keiji / rfc4648-java

Utilities for encoding and decoding the Base64, Base32, Extended-hex Base32 and Base16 representation of binary data.

RFC4648 for Java

Utilities for encoding and decoding the Base64, Base32, Extended Hex Base32 and Base16 representation of binary data.

• See RFC4648 https://datatracker.ietf.org/doc/html/rfc4648

Installation

To add RFC4648 for Java to your project, include the following in your app module build.gradle file:

dependencies {
    ...

    implementation 'dev.keiji.rfc4648:rfc4648:1.1.0'
}

License

Copyright 2021-2023 ARIYAMA Keiji

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.

Special Thanks

http://www5d.biglobe.ne.jp/stssk/rfc/rfc4648j.html

rfc4648-java's Issues

decodeUrlSafe doesn't accept no-padded data.

TestData(UrlSafe, No-padding)

Sb9Zwy4aBtjQRH_5QqKG3Q7r_tkWPN4E1zUWKKPAUWsDBqlUBOSbyZ1VgIxecCZTR2D1HqyfupErvQYI7wsogiJpchNadJU1S_hXkV6CHLv-hELxQWhxNuWJrIsOEsa-mLnqczAwe7iWHH9SyHwTcUbNj3ZaigZIM-eMn9zgpzGPlzfnY4XrT6cS8abz3O6S2FhosKlbP15t17ExkQwq5Nued8BdsMOjMrE6fjU-7CDEu66k_HOpuaCUvKObH6qTf6NBVM12cQ7WvRNuxt-bRENh3kniEb_qftNYD-Gyt3b1wC-hXY4YswR9JlzHPl5bBxXGHk98iAWdAQbK67IDsQ

https://datatracker.ietf.org/doc/html/rfc4648#page-7

The pad character "=" is typically percent-encoded when used in an
URI [9], but if the data length is known implicitly, this can be
avoided by skipping the padding; see section 3.2.