Struct fpe::ff1::FF1

pub struct FF1 { /* private fields */ }

The FF1 context structure

Implementations

impl FF1

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

Create a new FF1 context

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

The default tweak is optional. If supplied, it’s length must satisfy the constraints set by the mintwk and maxtwk parameters. mintwk and maxtwk may both be set to 0 to leave the tweak length unbounded.

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.