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Diffstat (limited to 'src/lib.rs')
| -rw-r--r-- | src/lib.rs | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -18,6 +18,20 @@ //! [`PasswordMaker`] is the main part of this crate. You give it settings similar to those of a PasswordMaker Pro profile, //! and it gives you a password that's hopfully the same you'd get from PasswordMaker Pro for the same input. //! +//! # Features +//! The library comes with a set of precomputed powers to (slightly) speed up computation in common use cases. By default, constants +//! for the lengths of the pre-defined character sets of PasswordMaker Pro are included (10, 16, 32, 52, 62, 94), amounting to a total +//! of 360 bytes on a 32bit machine, and 408 bytes on a 64bit machine (and some instructions to read them). For all other character +//! set lengths the values are computed at runtime when needed. Those values are in the (default-enabled) +//! `precomputed_common_max_powers` feature. +//! +//! If you prefer simpler code and want to save a couple of bytes in the binary, you can disable `default-features` to use runtime +//! computation for all values, at the cost of a slight performance impact. +//! +//! On the other hand, if binary size is not of concern, you might want to enable the `precomputed_max_powers` feature. +//! This feature enables precomputed powers for all bases in the range 2..130. It therefore needs 7680 bytes on a 32bit machine, and +//! 8704 bytes on a 64bit machine (plus some extra instructions). +//! //! # Warning //! This library has NOT been tested on 16bit machines. It might work, but probably does not. |