Migrate ff to rand_core 0.3 (used by rand 0.5)
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@ -10,7 +10,7 @@ repository = "https://github.com/ebfull/ff"
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[dependencies]
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byteorder = "1"
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rand = "0.4"
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rand_core = "0.3"
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ff_derive = { version = "0.3.0", path = "ff_derive", optional = true }
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[features]
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@ -136,13 +136,6 @@ fn prime_field_repr_impl(repr: &syn::Ident, limbs: usize) -> proc_macro2::TokenS
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}
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}
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impl ::rand::Rand for #repr {
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#[inline(always)]
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fn rand<R: ::rand::Rng>(rng: &mut R) -> Self {
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#repr(rng.gen())
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}
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}
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impl ::std::fmt::Display for #repr {
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fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
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try!(write!(f, "0x"));
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@ -839,22 +832,6 @@ fn prime_field_impl(
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}
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}
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impl ::rand::Rand for #name {
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/// Computes a uniformly random element using rejection sampling.
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fn rand<R: ::rand::Rng>(rng: &mut R) -> Self {
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loop {
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let mut tmp = #name(#repr::rand(rng));
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// Mask away the unused bits at the beginning.
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tmp.0.as_mut()[#top_limb_index] &= 0xffffffffffffffff >> REPR_SHAVE_BITS;
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if tmp.is_valid() {
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return tmp
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}
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}
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}
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}
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impl From<#name> for #repr {
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fn from(e: #name) -> #repr {
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e.into_repr()
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@ -904,6 +881,26 @@ fn prime_field_impl(
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}
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impl ::ff::Field for #name {
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/// Computes a uniformly random element using rejection sampling.
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fn random<R: ::rand_core::RngCore>(rng: &mut R) -> Self {
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loop {
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let mut tmp = {
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let mut repr = [0u64; #limbs];
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for i in 0..#limbs {
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repr[i] = rng.next_u64();
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}
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#name(#repr(repr))
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};
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// Mask away the unused bits at the beginning.
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tmp.0.as_mut()[#top_limb_index] &= 0xffffffffffffffff >> REPR_SHAVE_BITS;
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if tmp.is_valid() {
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return tmp
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}
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}
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}
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#[inline]
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fn zero() -> Self {
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#name(#repr::from(0))
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@ -1,7 +1,7 @@
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#![allow(unused_imports)]
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extern crate byteorder;
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extern crate rand;
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extern crate rand_core;
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#[cfg(feature = "derive")]
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#[macro_use]
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@ -10,14 +10,18 @@ extern crate ff_derive;
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#[cfg(feature = "derive")]
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pub use ff_derive::*;
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use rand_core::RngCore;
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use std::error::Error;
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use std::fmt;
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use std::io::{self, Read, Write};
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/// This trait represents an element of a field.
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pub trait Field:
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Sized + Eq + Copy + Clone + Send + Sync + fmt::Debug + fmt::Display + 'static + rand::Rand
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Sized + Eq + Copy + Clone + Send + Sync + fmt::Debug + fmt::Display + 'static
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{
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/// Returns an element chosen uniformly at random using a user-provided RNG.
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fn random<R: RngCore>(rng: &mut R) -> Self;
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/// Returns the zero element of the field, the additive identity.
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fn zero() -> Self;
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@ -100,7 +104,6 @@ pub trait PrimeFieldRepr:
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+ fmt::Debug
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+ fmt::Display
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+ 'static
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+ rand::Rand
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+ AsRef<[u64]>
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+ AsMut<[u64]>
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+ From<u64>
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