SOLVED: How to decrypt AES 128 in Swift?

@Riverboat_Gambler

19d

Hi,

I need to collect and load some data to a website from a Linux server and then retrieve it in an iOS Swift app.

To comply with the owner's requirements, all data must be AES 128 encrypted before being uploaded.

I have the encryption and upload working correctly and I can decrypt the data using a Java program.

However, I am going round in circles trying to put together the decrypt in Swift!

I can retrieve and display plaintext data from the website so I'm comfortable with getting the file into my app.

After that - I'm stuck!

My requirement is to decrypt the ciphertext and return it as a String.

Can anyone either offer a small sample or point me towards anything which might help me to crack this problem?

Thanks in advance for any assistance ...

@bobstern

18d

developer.apple.com/documentation/security/certificate_key_and_trust_services/keys/using_keys_for_encryption/

@Riverboat_Gambler

16d

Thanks for the link Bob - I read through it but it looked more appropriate for developing an end-to-end Swift solution.

I eventually spent an hour with chatGPT and managed to put together something which works.

Still more to do to apply the final polish but the AES part is now functional.

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