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Data Encoding Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial notes and example codes written by the author while he was learning different data encoding algorithms. Topics include introduction of data encoding algorithms: Base32, Base64, UUEncode; Base64 Encoding Algorithm with W3C Implementation; Base64 Encoding tools an...
2022-03-12, 278👍, 1💬

💬 2022-03-12 Rishi V: Hi -- How do i buy copyright to the Java implantation of DES encryption / Decryption

Base64 Encoding Algorithm
This section describes the Base64 encoding algorithm with some simple encoding examples.
2022-02-06, 19564👍, 28💬

💬 2022-02-06 ANONYMOUS: Wow! Nice explain.. Thanks a lot ;)

💬 2021-11-21 Jack: The best explanation of Base64 encoding! Thanks!

💬 2021-11-19 ME: I like it

💬 2021-09-21 Great: Thanks, Nice explanation

💬 2020-01-01 mynameisseow: 啊大大大

(More comments ...)

Bitpedia Implementation of Base32 in Java
This section provides a Java implementation of the Base32 encoding algorithm by the Bitcollider project.
2022-01-27, 2047👍, 3💬

💬 2016-05-21 Herong: Phil, byte[i] is actually a signed integer stored in 8-bit format. Statement like below is to convert byte[i] back as a unsigned...

💬 2016-05-18 phil.o: Thanks a lot for this implementation. I just wonder something: as byte is unsigned, would not (bytes[i] >= 0) ? always evaluate ...

UUEnccode Algorithm
This section describes the UUEncode algorithm with some simple encoding examples.
2021-07-19, 2000👍, 5💬

💬 2016-06-08 Herong: Neel, can you post an example of the uuencoded string that failed? May be we can figure the root cause of the issue.

💬 2016-06-01 Neel: Hi, we are using this uudecoder since long time in our code but recently we are facing issue like "Index out of range" and that ...

💬 2015-09-16 Mark Sitkowski: Excellent! Just what I was looking for

Base32 Encoding Algorithm
This section describes the Base32 encoding algorithm with some simple encoding examples.
2021-03-20, 11379👍, 9💬

💬 2021-03-20 Yours: Encryption is the method by which information is converted into secret code that hides the information's true meaning. The scien...

💬 2021-02-12 Herong: madblack, can you follow Example 5 given in the above tutorial? Just add "F" to the end of the input, then follow Padding, Bit G...

💬 2021-02-04 madblack: what is the output of 'ABCDEF' and how to solve it

💬 2020-09-30 Herong: savannah, if the last block is less than 5 bytes, it needs to padded with one or more 0x00 bytes.

💬 2020-09-29 savannah: Small question. What if my input word is ABCDEFGHIJ. How do I group this into blocks of 5 bytes?

(More comments ...)

Base32 Encoding
This chapter provides notes and tutorials on Base32 encoding algorithm and implementations. Topics include reviewing the Base32 encoding algorithm; reviewing different Base32 character set maps; reviewing implementations of Base32 coding in Java, PHP and C++ languages.
2021-03-13, 235👍, 1💬

💬 2021-03-13 Hans: Hello World!

What Is URL/URI Encoding?
This section describes what is URL/URI encoding - an encoding schema used in URL/URI that encode data into a sequence of characters prefixed with a percenter sign (%).
2019-08-16, 114👍, 1💬

application/x-www-form-urlencoded Encoding in Java
This section provides a tutorial example on how to use Java URLEncoder class to perform application/x-www-form-urlenco dedencoding and decoding.
2017-03-31, 7272👍, 2💬

💬 2017-03-31 s: &response=00&responseTimeSta mp=1490897171453&externalId=123f gh&type=AUTHORIZE_RESPONSE&serviceId=102&re...

💬 2016-09-22 dasgjdfa: test & good

Sun Implementation of UUEnccode in Java
This section provides a test program for the Java implementation of UUEncode by Sun. Tests of both encoder and decoder are provided.
2016-02-29, 1653👍, 2💬

💬 2016-02-29 Herong: weller, thanks for pointing out the typo. It will be corrected in the next update.

💬 2016-02-28 weller: ren SunUUEncode.uu SunUUEncode.class should be ren SunUUEncode.cls SunUUEncode.class

Andre's Implementation of Base32 in PHP
This section provides a PHP implementation of the Base32 encoding algorithm by Andre DeMarre.
2016-02-11, 597👍, 1💬

💬 2016-02-11 apple: thx

Sun Implementation of Base64 in Java
This section provides the source code for the Java implementation of Base64 by Sun.
2016-01-23, 2678👍, 2💬

💬 2016-01-23 Herong: Ashish, Finally Base64 encoding is included in JDK now. Thanks for sharing the tutorials;

💬 2016-01-22 Ashish: Nice Article you can read more about base 64 encoding using Java 8 at Modern Pathshala

PHP - convert_uuencode() and convert_uudecode()
This section provides the source code of the PHP implementation of UUEncode by
2015-07-27, 264👍, 1💬

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