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In this level, the entire table of data gets one IV. The attacker cannot deduce anything that may help them decode the encrypted data.Įquality Preserving Encryption: This is the default level of encryption for all tables. When each encryption request enables the usage of a random IV, the first block would be different. IVs make it unlikely that the encryption of two distinct data will ever create the same input/output pairs (at the block cipher level, and using the same key), even when one bears some relation to the other (including but far from limited to: starting with the same first block). If you had no IV, and used the Cipher Block Chaining (CBC) mode with just your key, two data sets that begin with identical data will produce identical first blocks. Without the key, anyone who might succeed in accessing the data will only see a "Ciphertext", which will have no real meaning.

However, the process itself depends on the key, which is used to encrypt the data and decryption it to retrieve the original data. The encoding process follows an encryption algorithm like AES 256 which is public. By keeping the decoding process a secret, nobody else can recover the original data from the encrypted data. You can then apply a special decoding process and you will get the original data back (decrypted). This is how encryption became a method to protect data from those who might want to steal it.Įncryption is when you change data with a special encoding process so that the data becomes unrecognizable (encrypted). This was done by replacing the contents with unrecognizable data, which could be understood only by the intended recipient.

Encryption is primarily used to safeguard the contents of a message so that only the intended recipient could read it.