lethal pulsar
Here we go again, so basically I was trying to encrypt a block in place using aes_gcm. The encryption works fine, but the decryption errors with aead::Error. From what I understand it is due to the associated data not matching, but both during encryption and decryption i had it set to b"" as i did not know what it did, what does associated data mean and how can i use an empty/static value for it?
When I attempt to println the error, all it says is just aead::Error
the encrypt call
cipher.encrypt_in_place(nonce, b"", data)
the decrypt call
cipher.decrypt_in_place(nonce, b"",data);
haughty goblet
Here we go again, so basically I was trying to encrypt a block in place using ae...
If you set associated data to b"" both times it is fine
Associated data is for when you want to transmit some unencrypted data alongside the encrypted data
If you pass it into the encryption algorithm, the decryptor is given the guarantee that the data has not been tampered with
There are a few possibilities for what could be going wrong:
• The key is not the same
• The nonce is not the same
• The ciphertext is not the same
In case you didn’t know, the nonce should never be reused, but is public and so should be transmitted in cleartext alongside the ciphertext
lethal pulsar
i see, i will try adding a few assertions to see if the key/nonces/ciphertext are not the same