purecrypto 0.6.10

A pure-Rust cryptography toolkit with no foreign-code dependencies, from constant-time primitives up to keys, X.509 and TLS.
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//! Constant-time big-integer arithmetic.
//!
//! [`Uint<LIMBS>`] is a fixed-size unsigned integer stored as `LIMBS` 64-bit
//! limbs in little-endian order. The size is part of the type, and every
//! operation processes all limbs unconditionally, so running time depends only
//! on the (public) size — never on the values. Data-dependent choices route
//! through the [`crate::ct`] primitives.
//!
//! This is the foundation for the integer-based asymmetric algorithms (RSA,
//! Diffie-Hellman, ECDSA). Modular arithmetic (Montgomery form, modexp,
//! inversion) is layered on top.

#[cfg(feature = "alloc")]
mod boxed;
#[cfg(feature = "alloc")]
mod boxed_montgomery;
mod inverse;
mod modpow;
mod montgomery;
mod mul;
// Probable-prime testing needs `BoxedUint` (alloc) and random bases (rng);
// only the `rsa` (keygen) and `dh` (custom-group validation) features use it,
// so gate on those too to keep other feature combos free of dead code.
#[cfg(all(
    feature = "alloc",
    feature = "rng",
    any(feature = "rsa", feature = "dh")
))]
pub(crate) mod prime;
mod uint;

#[cfg(feature = "alloc")]
pub use boxed::BoxedUint;
#[cfg(feature = "alloc")]
pub use boxed_montgomery::BoxedMontModulus;
pub use inverse::inv_mod;
#[cfg(feature = "alloc")]
pub use inverse::inv_mod_boxed;
pub use montgomery::MontModulus;
pub use uint::{LIMB_BITS, Limb, Uint};