70 lines
1.7 KiB
Rust
70 lines
1.7 KiB
Rust
use std::{fmt, io};
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use crate::serialization::{SerializationError, ZcashDeserialize, ZcashSerialize};
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/// An encoding of a Groth16 proof, as used in Zcash.
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pub struct Groth16Proof(pub [u8; 192]);
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impl fmt::Debug for Groth16Proof {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_tuple("Groth16Proof")
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.field(&hex::encode(&self.0[..]))
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.finish()
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}
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}
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// These impls all only exist because of array length restrictions.
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impl Copy for Groth16Proof {}
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impl Clone for Groth16Proof {
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fn clone(&self) -> Self {
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let mut bytes = [0; 192];
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bytes[..].copy_from_slice(&self.0[..]);
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Self(bytes)
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}
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}
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impl PartialEq for Groth16Proof {
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fn eq(&self, other: &Self) -> bool {
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self.0[..] == other.0[..]
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}
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}
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impl Eq for Groth16Proof {}
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impl ZcashSerialize for Groth16Proof {
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fn zcash_serialize<W: io::Write>(&self, mut writer: W) -> Result<(), io::Error> {
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writer.write_all(&self.0[..])?;
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Ok(())
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}
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}
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impl ZcashDeserialize for Groth16Proof {
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fn zcash_deserialize<R: io::Read>(mut reader: R) -> Result<Self, SerializationError> {
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let mut bytes = [0; 192];
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reader.read_exact(&mut bytes[..])?;
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Ok(Self(bytes))
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}
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}
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#[cfg(test)]
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use proptest::{arbitrary::Arbitrary, collection::vec, prelude::*};
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#[cfg(test)]
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impl Arbitrary for Groth16Proof {
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type Parameters = ();
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fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy {
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(vec(any::<u8>(), 192))
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.prop_map(|v| {
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let mut bytes = [0; 192];
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bytes.copy_from_slice(v.as_slice());
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return Self(bytes);
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})
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.boxed()
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}
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type Strategy = BoxedStrategy<Self>;
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}
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