Refactor algebra API, split into algebra and algebra-core. (#100)

crypto-primitives/src/crh/bowe_hopwood/constraints.rs

@@ -1,16 +1,14 @@
-use algebra::Field;
-use core::hash::Hash;
+use core::{borrow::Borrow, hash::Hash, marker::PhantomData};
 
 use crate::crh::{
     bowe_hopwood::{BoweHopwoodPedersenCRH, BoweHopwoodPedersenParameters, CHUNK_SIZE},
     pedersen::PedersenWindow,
     FixedLengthCRHGadget,
 };
-use algebra::groups::Group;
+use algebra_core::{groups::Group, Field};
 use r1cs_core::{ConstraintSystem, SynthesisError};
 use r1cs_std::{alloc::AllocGadget, groups::GroupGadget, uint8::UInt8};
 
-use core::{borrow::Borrow, marker::PhantomData};
 use r1cs_std::bits::boolean::Boolean;
 
 #[derive(Derivative)]
@@ -125,38 +123,39 @@ impl<G: Group, W: PedersenWindow, ConstraintF: Field, GG: GroupGadget<G, Constra
 
 #[cfg(test)]
 mod test {
+    use rand::Rng;
+
     use crate::crh::{
         bowe_hopwood::{constraints::BoweHopwoodPedersenCRHGadget, BoweHopwoodPedersenCRH},
         pedersen::PedersenWindow,
         FixedLengthCRH, FixedLengthCRHGadget,
     };
     use algebra::{
-        curves::edwards_sw6::EdwardsProjective as Edwards, fields::sw6::fr::Fr, test_rng,
-        ProjectiveCurve,
+        jubjub::{Fq as Fr, JubJubProjective as JubJub},
+        test_rng, ProjectiveCurve,
     };
     use r1cs_core::ConstraintSystem;
     use r1cs_std::{
-        alloc::AllocGadget, groups::curves::twisted_edwards::edwards_sw6::EdwardsSWGadget,
-        test_constraint_system::TestConstraintSystem, uint8::UInt8,
+        alloc::AllocGadget, jubjub::JubJubGadget, test_constraint_system::TestConstraintSystem,
+        uint8::UInt8,
     };
-    use rand::Rng;
 
-    type TestCRH = BoweHopwoodPedersenCRH<Edwards, Window>;
-    type TestCRHGadget = BoweHopwoodPedersenCRHGadget<Edwards, Fr, EdwardsSWGadget>;
+    type TestCRH = BoweHopwoodPedersenCRH<JubJub, Window>;
+    type TestCRHGadget = BoweHopwoodPedersenCRHGadget<JubJub, Fr, JubJubGadget>;
 
     #[derive(Clone, PartialEq, Eq, Hash)]
     pub(super) struct Window;
 
     impl PedersenWindow for Window {
-        const WINDOW_SIZE: usize = 90;
+        const WINDOW_SIZE: usize = 63;
         const NUM_WINDOWS: usize = 8;
     }
 
     fn generate_input<CS: ConstraintSystem<Fr>, R: Rng>(
         mut cs: CS,
         rng: &mut R,
-    ) -> ([u8; 270], Vec<UInt8>) {
-        let mut input = [1u8; 270];
+    ) -> ([u8; 189], Vec<UInt8>) {
+        let mut input = [1u8; 189];
         rng.fill_bytes(&mut input);
 
         let mut input_bytes = vec![];

crypto-primitives/src/crh/bowe_hopwood/mod.rs

@@ -9,7 +9,7 @@ use rayon::prelude::*;
 
 use super::pedersen::{bytes_to_bits, PedersenCRH, PedersenWindow};
 use crate::crh::FixedLengthCRH;
-use algebra::{biginteger::BigInteger, fields::PrimeField, groups::Group};
+use algebra_core::{biginteger::BigInteger, fields::PrimeField, groups::Group};
 use ff_fft::cfg_chunks;
 
 #[cfg(feature = "r1cs")]
@@ -173,22 +173,22 @@ mod test {
         crh::{bowe_hopwood::BoweHopwoodPedersenCRH, pedersen::PedersenWindow},
         FixedLengthCRH,
     };
-    use algebra::{curves::edwards_sw6::EdwardsProjective, test_rng};
+    use algebra::{jubjub::JubJubProjective, test_rng};
 
     #[test]
     fn test_simple_bh() {
         #[derive(Clone)]
         struct TestWindow {}
         impl PedersenWindow for TestWindow {
-            const WINDOW_SIZE: usize = 90;
+            const WINDOW_SIZE: usize = 63;
             const NUM_WINDOWS: usize = 8;
         }
 
         let rng = &mut test_rng();
         let params =
-            <BoweHopwoodPedersenCRH<EdwardsProjective, TestWindow> as FixedLengthCRH>::setup(rng)
+            <BoweHopwoodPedersenCRH<JubJubProjective, TestWindow> as FixedLengthCRH>::setup(rng)
                 .unwrap();
-        <BoweHopwoodPedersenCRH<EdwardsProjective, TestWindow> as FixedLengthCRH>::evaluate(
+        <BoweHopwoodPedersenCRH<JubJubProjective, TestWindow> as FixedLengthCRH>::evaluate(
             &params,
             &[1, 2, 3],
         )

crypto-primitives/src/crh/constraints.rs

@@ -1,4 +1,4 @@
-use algebra::Field;
+use algebra_core::Field;
 use core::fmt::Debug;
 
 use crate::crh::FixedLengthCRH;

crypto-primitives/src/crh/injective_map/constraints.rs

@@ -9,7 +9,7 @@ use crate::crh::{
     FixedLengthCRHGadget,
 };
 
-use algebra::{
+use algebra_core::{
     curves::{
         models::{ModelParameters, TEModelParameters},
         twisted_edwards_extended::{GroupAffine as TEAffine, GroupProjective as TEProjective},

crypto-primitives/src/crh/injective_map/mod.rs

@@ -1,5 +1,5 @@
 use crate::{CryptoError, Error};
-use algebra::bytes::ToBytes;
+use algebra_core::bytes::ToBytes;
 use core::{fmt::Debug, hash::Hash, marker::PhantomData};
 use rand::Rng;
 
@@ -7,7 +7,7 @@ use super::{
     pedersen::{PedersenCRH, PedersenParameters, PedersenWindow},
     FixedLengthCRH,
 };
-use algebra::{
+use algebra_core::{
     curves::{
         models::{ModelParameters, TEModelParameters},
         twisted_edwards_extended::{GroupAffine as TEAffine, GroupProjective as TEProjective},

crypto-primitives/src/crh/mod.rs

@@ -1,4 +1,4 @@
-use algebra::bytes::ToBytes;
+use algebra_core::bytes::ToBytes;
 use core::hash::Hash;
 use rand::Rng;
 

crypto-primitives/src/crh/pedersen/constraints.rs

@@ -2,7 +2,7 @@ use crate::crh::{
     pedersen::{PedersenCRH, PedersenParameters, PedersenWindow},
     FixedLengthCRHGadget,
 };
-use algebra::{Field, Group};
+use algebra_core::{Field, Group};
 use r1cs_core::{ConstraintSystem, SynthesisError};
 use r1cs_std::prelude::*;
 
@@ -119,14 +119,12 @@ mod test {
         FixedLengthCRH, FixedLengthCRHGadget,
     };
     use algebra::{
-        curves::{jubjub::JubJubProjective as JubJub, ProjectiveCurve},
-        fields::bls12_381::fr::Fr,
-        test_rng,
+        jubjub::{Fq as Fr, JubJubProjective as JubJub},
+        test_rng, ProjectiveCurve,
     };
     use r1cs_core::ConstraintSystem;
     use r1cs_std::{
-        groups::curves::twisted_edwards::jubjub::JubJubGadget, prelude::*,
-        test_constraint_system::TestConstraintSystem,
+        jubjub::JubJubGadget, prelude::*, test_constraint_system::TestConstraintSystem,
     };
     use rand::Rng;
 

crypto-primitives/src/crh/pedersen/mod.rs

@@ -8,7 +8,7 @@ use rand::Rng;
 use rayon::prelude::*;
 
 use crate::crh::FixedLengthCRH;
-use algebra::{groups::Group, Field, ToConstraintField};
+use algebra_core::{groups::Group, Field, ToConstraintField};
 use ff_fft::cfg_chunks;
 
 #[cfg(feature = "r1cs")]