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Change personalizations to actually match spec this time.

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This commit is contained in:
Sean Bowe
2018-03-19 17:26:28 -06:00
parent 219d03cc11
commit b14c9f8d68
3 changed files with 12 additions and 20 deletions
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4
src/circuit/sapling/mod.rs
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@@ -624,7 +624,7 @@ fn test_input_circuit_with_bls12_381() {
assert!(cs.is_satisfied()); assert!(cs.is_satisfied());
assert_eq!(cs.num_constraints(), 98776); assert_eq!(cs.num_constraints(), 98776);
assert_eq!(cs.hash(), "d810fa887178359f3fc5723781a0750b750dd0c02aeb0b14ff19a343db9868f1"); assert_eq!(cs.hash(), "2080d5f350cd7eff7742ab05dff18f82c0a2f29a5d2a758d805236067b2ed31f");
assert_eq!(cs.num_inputs(), 8); assert_eq!(cs.num_inputs(), 8);
assert_eq!(cs.get_input(0, "ONE"), Fr::one()); assert_eq!(cs.get_input(0, "ONE"), Fr::one());
@@ -752,7 +752,7 @@ fn test_output_circuit_with_bls12_381() {
assert!(cs.is_satisfied()); assert!(cs.is_satisfied());
assert_eq!(cs.num_constraints(), 7827); assert_eq!(cs.num_constraints(), 7827);
assert_eq!(cs.hash(), "e49724488227ae83b2360a5ddbda7e44c83e6f526a369cefeb747c5dd6aab7c7"); assert_eq!(cs.hash(), "a7810a444f7ef6d0caa8ba026ce06e64654863cd0557241282ca337858039a53");
let expected_cm = payment_address.create_note( let expected_cm = payment_address.create_note(
value_commitment.value, value_commitment.value,

12
src/constants.rs
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@@ -31,18 +31,10 @@ pub const SPENDING_KEY_GENERATOR_PERSONALIZATION: &'static [u8; 8]
pub const PROOF_GENERATION_KEY_BASE_GENERATOR_PERSONALIZATION: &'static [u8; 8] pub const PROOF_GENERATION_KEY_BASE_GENERATOR_PERSONALIZATION: &'static [u8; 8]
= b"Zcash_H_"; = b"Zcash_H_";
/// BLAKE2s Personalization for the note commitment randomness generator
pub const NOTE_COMMITMENT_RANDOMNESS_GENERATOR_PERSONALIZATION: &'static [u8; 8]
= b"Zcashrcm";
/// BLAKE2s Personalization for the value commitment randomness generator
pub const VALUE_COMMITMENT_RANDOMNESS_GENERATOR_PERSONALIZATION: &'static [u8; 8]
= b"Zcashrcv";
/// BLAKE2s Personalization for the value commitment generator for the value /// BLAKE2s Personalization for the value commitment generator for the value
pub const VALUE_COMMITMENT_VALUE_GENERATOR_PERSONALIZATION: &'static [u8; 8] pub const VALUE_COMMITMENT_GENERATOR_PERSONALIZATION: &'static [u8; 8]
= b"Zcash_cv"; = b"Zcash_cv";
/// BLAKE2s Personalization for the nullifier position generator (for computing rho) /// BLAKE2s Personalization for the nullifier position generator (for computing rho)
pub const NULLIFIER_POSITION_IN_TREE_GENERATOR_PERSONALIZATION: &'static [u8; 8] pub const NULLIFIER_POSITION_IN_TREE_GENERATOR_PERSONALIZATION: &'static [u8; 8]
= b"Zcashrho"; = b"Zcash_J_";

16
src/jubjub/mod.rs
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@@ -224,10 +224,10 @@ impl JubjubBls12 {
let mut pedersen_hash_generators = vec![]; let mut pedersen_hash_generators = vec![];
for m in 0..5 { for m in 0..5 {
use byteorder::{WriteBytesExt, BigEndian}; use byteorder::{WriteBytesExt, LittleEndian};
let mut segment_number = [0u8; 4]; let mut segment_number = [0u8; 4];
(&mut segment_number[0..4]).write_u32::<BigEndian>(m).unwrap(); (&mut segment_number[0..4]).write_u32::<LittleEndian>(m).unwrap();
pedersen_hash_generators.push( pedersen_hash_generators.push(
find_group_hash( find_group_hash(
@@ -259,22 +259,22 @@ impl JubjubBls12 {
let mut fixed_base_generators = vec![edwards::Point::zero(); FixedGenerators::Max as usize]; let mut fixed_base_generators = vec![edwards::Point::zero(); FixedGenerators::Max as usize];
fixed_base_generators[FixedGenerators::ProofGenerationKey as usize] = fixed_base_generators[FixedGenerators::ProofGenerationKey as usize] =
find_group_hash(b"0", constants::PROOF_GENERATION_KEY_BASE_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(&[], constants::PROOF_GENERATION_KEY_BASE_GENERATOR_PERSONALIZATION, &tmp_params);
fixed_base_generators[FixedGenerators::NoteCommitmentRandomness as usize] = fixed_base_generators[FixedGenerators::NoteCommitmentRandomness as usize] =
find_group_hash(b"0", constants::NOTE_COMMITMENT_RANDOMNESS_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(b"r", constants::PEDERSEN_HASH_GENERATORS_PERSONALIZATION, &tmp_params);
fixed_base_generators[FixedGenerators::NullifierPosition as usize] = fixed_base_generators[FixedGenerators::NullifierPosition as usize] =
find_group_hash(b"0", constants::NULLIFIER_POSITION_IN_TREE_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(&[], constants::NULLIFIER_POSITION_IN_TREE_GENERATOR_PERSONALIZATION, &tmp_params);
fixed_base_generators[FixedGenerators::ValueCommitmentValue as usize] = fixed_base_generators[FixedGenerators::ValueCommitmentValue as usize] =
find_group_hash(b"0", constants::VALUE_COMMITMENT_VALUE_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(b"v", constants::VALUE_COMMITMENT_GENERATOR_PERSONALIZATION, &tmp_params);
fixed_base_generators[FixedGenerators::ValueCommitmentRandomness as usize] = fixed_base_generators[FixedGenerators::ValueCommitmentRandomness as usize] =
find_group_hash(b"0", constants::VALUE_COMMITMENT_RANDOMNESS_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(b"r", constants::VALUE_COMMITMENT_GENERATOR_PERSONALIZATION, &tmp_params);
fixed_base_generators[FixedGenerators::SpendingKeyGenerator as usize] = fixed_base_generators[FixedGenerators::SpendingKeyGenerator as usize] =
find_group_hash(b"0", constants::SPENDING_KEY_GENERATOR_PERSONALIZATION, &tmp_params); find_group_hash(&[], constants::SPENDING_KEY_GENERATOR_PERSONALIZATION, &tmp_params);
// Check for duplicates, far worse than spec inconsistencies! // Check for duplicates, far worse than spec inconsistencies!
for (i, p1) in fixed_base_generators.iter().enumerate() { for (i, p1) in fixed_base_generators.iter().enumerate() {