Replace rand with ark_std::rand (#42)

* replace rand

* update CHANGELOG

* fmt

* fix

* fix

bls12_377/src/curves/tests.rs

@@ -7,8 +7,8 @@ use ark_serialize::CanonicalSerialize;
 use ark_std::test_rng;
 
 use ark_ec::{models::SWModelParameters, AffineCurve, PairingEngine, ProjectiveCurve};
+use ark_std::rand::Rng;
 use core::ops::{AddAssign, MulAssign};
-use rand::Rng;
 
 use crate::{g1, g2, Bls12_377, Fq, Fq12, Fq2, Fr, G1Affine, G1Projective, G2Affine, G2Projective};
 

bls12_377/src/fields/tests.rs

@@ -7,13 +7,12 @@ use ark_ff::{
     One, UniformRand, Zero,
 };
 use ark_serialize::{buffer_bit_byte_size, CanonicalSerialize};
+use ark_std::rand::Rng;
 use ark_std::test_rng;
 use core::{
     cmp::Ordering,
     ops::{AddAssign, MulAssign, SubAssign},
 };
-use rand::{Rng, SeedableRng};
-use rand_xorshift::XorShiftRng;
 
 use crate::{Fq, Fq12, Fq2, Fq2Parameters, Fq6, Fq6Parameters, FqParameters, Fr};
 
@@ -135,7 +134,7 @@ fn test_fq_repr_num_bits() {
 fn test_fq_add_assign() {
     // Test associativity
 
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         // Generate a, b, c and ensure (a + b) + c == a + (b + c).
@@ -157,7 +156,7 @@ fn test_fq_add_assign() {
 
 #[test]
 fn test_fq_sub_assign() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         // Ensure that (a - b) + (b - a) = 0.
@@ -177,7 +176,7 @@ fn test_fq_sub_assign() {
 
 #[test]
 fn test_fq_mul_assign() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000000 {
         // Ensure that (a * b) * c = a * (b * c)
@@ -222,7 +221,7 @@ fn test_fq_mul_assign() {
 
 #[test]
 fn test_fq_squaring() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000000 {
         // Ensure that (a * a) = a^2
@@ -242,7 +241,7 @@ fn test_fq_squaring() {
 fn test_fq_inverse() {
     assert!(Fq::zero().inverse().is_none());
 
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     let one = Fq::one();
 
@@ -257,7 +256,7 @@ fn test_fq_inverse() {
 
 #[test]
 fn test_fq_double_in_place() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         // Ensure doubling a is equivalent to adding a to itself.
@@ -277,7 +276,7 @@ fn test_fq_negate() {
         assert!(a.is_zero());
     }
 
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         // Ensure (a - (-a)) = 0.
@@ -291,7 +290,7 @@ fn test_fq_negate() {
 
 #[test]
 fn test_fq_pow() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for i in 0..1000 {
         // Exponentiate by various small numbers and ensure it consists with repeated
@@ -315,7 +314,7 @@ fn test_fq_pow() {
 
 #[test]
 fn test_fq_sqrt() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     assert_eq!(Fq::zero().sqrt().unwrap(), Fq::zero());
 
@@ -438,7 +437,7 @@ fn test_fq2_legendre() {
 
 #[test]
 fn test_fq2_mul_nonresidue() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     let nqr = Fq2::new(Fq::zero(), Fq::one());
 
@@ -458,7 +457,7 @@ fn test_fq2_mul_nonresidue() {
 
 #[test]
 fn test_fq6_mul_by_1() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         let c1 = Fq2::rand(&mut rng);
@@ -474,7 +473,7 @@ fn test_fq6_mul_by_1() {
 
 #[test]
 fn test_fq6_mul_by_01() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         let c0 = Fq2::rand(&mut rng);
@@ -491,7 +490,7 @@ fn test_fq6_mul_by_01() {
 
 #[test]
 fn test_fq12_mul_by_014() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         let c0 = Fq2::rand(&mut rng);
@@ -512,7 +511,7 @@ fn test_fq12_mul_by_014() {
 
 #[test]
 fn test_fq12_mul_by_034() {
-    let mut rng = XorShiftRng::seed_from_u64(1231275789u64);
+    let mut rng = test_rng();
 
     for _ in 0..1000 {
         let c0 = Fq2::rand(&mut rng);