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PrimeField::s() should return u32.

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This commit is contained in:
Sean Bowe 2017-07-29 22:47:06 -06:00
parent aa5d634c04
commit 1a481bc741
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GPG Key ID: 95684257D8F8B031
3 changed files with 5 additions and 5 deletions
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4
src/bls12_381/fq.rs
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@ -25,7 +25,7 @@ const INV: u64 = 0x89f3fffcfffcfffd;
const GENERATOR: FqRepr = FqRepr([0x321300000006554f, 0xb93c0018d6c40005, 0x57605e0db0ddbb51, 0x8b256521ed1f9bcb, 0x6cf28d7901622c03, 0x11ebab9dbb81e28c]); const GENERATOR: FqRepr = FqRepr([0x321300000006554f, 0xb93c0018d6c40005, 0x57605e0db0ddbb51, 0x8b256521ed1f9bcb, 0x6cf28d7901622c03, 0x11ebab9dbb81e28c]);
// 2^s * t = MODULUS - 1 with t odd // 2^s * t = MODULUS - 1 with t odd
const S: usize = 1; const S: u32 = 1;
// 2^s root of unity computed by GENERATOR^t // 2^s root of unity computed by GENERATOR^t
const ROOT_OF_UNITY: FqRepr = FqRepr([0x43f5fffffffcaaae, 0x32b7fff2ed47fffd, 0x7e83a49a2e99d69, 0xeca8f3318332bb7a, 0xef148d1ea0f4c069, 0x40ab3263eff0206]); const ROOT_OF_UNITY: FqRepr = FqRepr([0x43f5fffffffcaaae, 0x32b7fff2ed47fffd, 0x7e83a49a2e99d69, 0xeca8f3318332bb7a, 0xef148d1ea0f4c069, 0x40ab3263eff0206]);
@ -444,7 +444,7 @@ impl PrimeField for Fq {
Fq(GENERATOR) Fq(GENERATOR)
} }
fn s() -> usize { fn s() -> u32 {
S S
} }

4
src/bls12_381/fr.rs
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@ -23,7 +23,7 @@ const INV: u64 = 0xfffffffeffffffff;
const GENERATOR: FrRepr = FrRepr([0xefffffff1, 0x17e363d300189c0f, 0xff9c57876f8457b0, 0x351332208fc5a8c4]); const GENERATOR: FrRepr = FrRepr([0xefffffff1, 0x17e363d300189c0f, 0xff9c57876f8457b0, 0x351332208fc5a8c4]);
// 2^s * t = MODULUS - 1 with t odd // 2^s * t = MODULUS - 1 with t odd
const S: usize = 32; const S: u32 = 32;
// 2^s root of unity computed by GENERATOR^t // 2^s root of unity computed by GENERATOR^t
const ROOT_OF_UNITY: FrRepr = FrRepr([0xb9b58d8c5f0e466a, 0x5b1b4c801819d7ec, 0xaf53ae352a31e64, 0x5bf3adda19e9b27b]); const ROOT_OF_UNITY: FrRepr = FrRepr([0xb9b58d8c5f0e466a, 0x5b1b4c801819d7ec, 0xaf53ae352a31e64, 0x5bf3adda19e9b27b]);
@ -264,7 +264,7 @@ impl PrimeField for Fr {
Fr(GENERATOR) Fr(GENERATOR)
} }
fn s() -> usize { fn s() -> u32 {
S S
} }

2
src/lib.rs
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@ -496,7 +496,7 @@ pub trait PrimeField: Field
fn multiplicative_generator() -> Self; fn multiplicative_generator() -> Self;
/// Returns s such that 2^s * t = `char()` - 1 with t odd. /// Returns s such that 2^s * t = `char()` - 1 with t odd.
fn s() -> usize; fn s() -> u32;
/// Returns the 2^s root of unity computed by exponentiating the `multiplicative_generator()` /// Returns the 2^s root of unity computed by exponentiating the `multiplicative_generator()`
/// by t. /// by t.