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I am newbie in PHP and I was trying to achieve the CryptoJS AES encryption equivalent in PHP. I saw this post but unfortunately I was not able to achieve the same. I was getting a different output in PHP code as encrypted string.

Where did I go wrong?

Javascript Code

I have a Unix utility, which is called hex2bin which gets a hex file and generates a bin file. I have a python code that generates the hex file and I want my python code after generating the hex file to call this hex2bin utility, which if I call in a terminal in Unix I call as:

I am trying to replicate the following PHP class in Java to decrypt a string that was encrypted using openssl_encrypt in PHP.

I'm trying to generate a Nano private key, public key and address (that's a cryptocurrency) in PHP. I successfully generated private keys but I'm not able to generate the public key and consequently neither the checksum nor the integer address. in order to do this I would have to encrypt the private key through the blake2b-512 algorithm and the ED25119 curve and then I gotta obtain the checksum through the blake2b-40 algorithm by encrypting the public key. That's my code:

I have some problem when porting a function from PHP to NodeJS. I have tried implement this PHP code with Node JS, but its not working.

This is the code in PHP

I'm stuck with a problem while using Codeigniter 4 and the encryption service. All works well, I can encrypt and decrypt without any problem but I want to detect when the encrypted string gives the error "Decrypting: authentication failed."

Basically all I'm trying to do is this:

1. Get the encrypted string
2. Decrypt the string: if the decryption succed then proceed with the script, otherwise give a 404 error

Here is my test code, maybe it helps to explain my problem

$ct1 is the correct encrypted string, $ct2 is the same string but with the first character changed, just to simulate an error, the first is decrypted correctly, the second gives an error, I want to detect this error and show the 404 page (I know how to show the 404 page, I just need a way to detect the error).

Due to GDPR I'm trying to find a good method to encrypt/decrypt data. But as my application has both Delphi and PHP endpoints I need functions that have strong encryption and work on both.

Searching on SO I've found out the following one, but I don't know how to do the same functions on Delphi:

I have been trying to replicate an encryption process for a 3rd party integration. The 3rd party uses openssl, and have given me there C code they use to perform the process. I have been trying to port this process across to C# for weeks, but I appear to be missing something I can not work out. Most likely I am missing something in transposing the C code and OpenSSL libraries, but I can not figure it out for the life of me The main port os OpenSSL to .NET (https://github.com/openssl-net/openssl-net) unfortunatly does not have support for TripleDes, so can not be used

Here is the example C code

Here is my php for openssl_encrypt: