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27 lines
1.0 KiB
27 lines
1.0 KiB
//! Bls12-377 scalar field.
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/// Roots of unity computed from modulus and R using this sage code:
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///
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/// ```ignore
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/// q = 8444461749428370424248824938781546531375899335154063827935233455917409239041
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/// R = 6014086494747379908336260804527802945383293308637734276299549080986809532403 # Montgomery R
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/// s = 47
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/// o = q - 1
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/// F = GF(q)
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/// g = F.multiplicative_generator()
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/// g = F.multiplicative_generator()
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/// assert g.multiplicative_order() == o
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/// g2 = g ** (o/2**s)
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/// assert g2.multiplicative_order() == 2**s
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/// def into_chunks(val, width, n):
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/// return [int(int(val) // (2 ** (width * i)) % 2 ** width) for i in range(n)]
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/// print("Gen: ", g * R % q)
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/// print("Gen: ", into_chunks(g * R % q, 64, 4))
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/// print("2-adic gen: ", into_chunks(g2 * R % q, 64, 4))
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/// ```
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use ark_ff::fields::{Fp256, MontBackend, MontConfig};
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#[derive(MontConfig)]
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#[modulus = "8444461749428370424248824938781546531375899335154063827935233455917409239041"]
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#[generator = "22"]
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pub struct FrConfig;
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pub type Fr = Fp256<MontBackend<FrConfig, 4>>;
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