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Converting Secret Key into a String and Vice Versa
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You can convert the SecretKey to a byte array (byte[]), then Base64 encode that to a String. To convert back to a SecretKey, Base64 decode the String and use it in a SecretKeySpec to rebuild your original SecretKey.
For Java 8
SecretKey to String:
// create new key
SecretKey secretKey ...
What is base 64 encoding used for?
I've heard people talking about "base 64 encoding" here and there. What is it used for?
18 Answers
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Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
...running the 32bit version of Ubuntu 10.10 and trying to cross compile to a 64 bit target. Based on my research, I have installed the g++-multilib package.
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What is the effect of encoding an image in base64?
If I convert an image (jpg or png) to base64, then will it be bigger, or will it have the same size? How much greater will it be?
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...为下单的人服务。
六、缓存的问题
缓存可以用来缓存动态页面，也可以用来缓存查询的数据。缓存通常有那么几个问题：
1）缓存的更新。也叫缓存和数据库的同步。有这么几种方法，一是缓存time out，让缓存失效，重查，二...
Node.js throws “btoa is not defined” error
...e, it only provides command line utilities.
If you need to convert to Base64 you could do so using Buffer:
console.log(Buffer.from('Hello World!').toString('base64'));
Reverse (assuming the content you're decoding is a utf8 string):
console.log(Buffer.from(b64Encoded, 'base64').toString());
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Strange \n in base64 encoded string in Ruby
The inbuilt Base64 library in Ruby is adding some '\n's. I'm unable to find out the reason. For this special example:
6 Ans...
How to compile for Windows on Linux with gcc/g++?
...orial here at the Code::Blocks forum. Mind that the command changes to x86_64-w64-mingw32-gcc-win32, for example.
Ubuntu, for example, has MinGW in its repositories:
$ apt-cache search mingw
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g++-mingw-w64 - GNU C++ compiler for MinGW-w64
gcc-mingw-w64 - GNU C compiler for MinGW-w64
mingw-w64...
Code for decoding/encoding a modified base64 URL
I want to base64 encode data to put it in a URL and then decode it within my HttpHandler.
5 Answers
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RegEx to parse or validate Base64 data
Is it possible to use a RegEx to validate, or sanitize Base64 data? That's the simple question, but the factors that drive this question are what make it difficult.
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