Struct fpe::ff3_1::FF3_1

pub struct FF3_1 { /* private fields */ }

The FF3_1 context structure

Implementations

impl FF3_1

pub fn new( key: &[u8], opt_twk: Option<&[u8]>, radix: usize, opt_alpha: Option<&str> ) -> Result<Self>

Create a new FF3-1 context

The supplied key may be any of the lengths supported by AES.

The default tweak is optional. If supplied, it’s length must be 7 bytes as per the algorithm specification. Those values are hardcoded within this function. Note that if the default tweak is not supplied, one must be supplied during the encrypt and decrypt operations

The radix must be less than or equal to the number of characters in the supplied alphabet (or the default alphabet) if no alphabet is supplied to this function

pub fn encrypt(&self, pt: &str, twk: Option<&[u8]>) -> Result<String>

Encrypt a string

If the tweak is not None, then the specified tweak will be used instead of the default specified by the context structure.

pub fn decrypt(&self, ct: &str, twk: Option<&[u8]>) -> Result<String>

Decrypt a string

If the tweak is not None, then the specified tweak will be used instead of the default specified by the context structure. The tweak used must match that used during encryption.