Decrypt C # string

Question

My company is in the process of transitioning to the website only from a third party. We rewrote the website, and the last step is to import existing users. We have a database with users and their passwords. We were also given a “key” and told that the password field is encrypted using AES encryption.

I need to decrypt passwords and then re-encrypt them in a new database using my company key. Using .Net, how can I decrypt passwords with just a key? All the samples I've seen require information like BlockSize, InitializationVector, KeySize, etc. I do not have this information.

thanks

Answer 1

BlockSize and KeySize with which you can play (they are a multiple of 8 IIRC).

Not sure about initialization vector. It may be all 0, but to verify this you will need at least 1 correctly decrypted password.

Good luck. :)

Answer 2

It just seems wrong ... Passwords are usually not encrypted, they are hashed. In this case, you cannot restore the original passwords.

Is there a way to look at the source code to see how passwords are generated?

Answer 3

, , , , reset ?

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Answer 4

IV, , , , , , , , ( AES - 128 ).

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• IV
• , , , IV ( ), , , -
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