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Asked: 2026-05-21T19:00:15+00:00

I m trying to match java base64 code in php. But getting inconsistent result.

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I m trying to match java base64 code in php. But getting inconsistent result.

Java base64 encode

encMessage = URLEncoder.encode(new Base64(-1).encodeToString(encrypted),"UTF8");

Java decode

message = URLDecoder.decode(message,"utf8");

Above code java encode code return the string which i have to decode and decrypt in php

PHP base64 decode

$message     = utf8_decode(urldecode($encrypted));
$message     = base64_decode($message);

PHP encode

$encMessage     = base64_encode($encrypted);
$encMessage     = utf8_encode(urlencode($encMessage));

Results:
java:

KO%2F%2B%2Bzbp5z8oCdvZn62jb72kseT%2Bem8hYUZY0IuB9zo%3D

php:

KO%2F%2B%2Bzbp5z8oCdvZn62jb3CVVVXsV%2Bws2kDOmKK%2BPEc%3D

src : https://gist.github.com/944269

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1 Answer

  1. Editorial Team

    I had this problem between CSharp and Java, and found that URL encoding things was the culprit. What I did in my work around was basically re-encrypt the data with a newly generated public key until I got one that didn’t need URL encoding. Not a great solution, but it works, it averages 2 tries to get it right, but I’ve seen it taking up to 15 tries to do it, either way we’re still talking milliseconds, and it works reliably.

    YMMV

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