Jack Grigg
051027cb6d
git-subtree-dir: sapling-crypto git-subtree-mainline:9f748554d0git-subtree-split:21084bde20
43 lines
1.0 KiB
Rust
43 lines
1.0 KiB
Rust
use pairing::{Engine};
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use bellman::{ConstraintSystem, SynthesisError};
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use circuit::sha256::{
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sha256
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};
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use circuit::boolean::{
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Boolean
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};
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pub fn note_comm<E, CS>(
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cs: CS,
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a_pk: &[Boolean],
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value: &[Boolean],
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rho: &[Boolean],
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r: &[Boolean]
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) -> Result<Vec<Boolean>, SynthesisError>
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where E: Engine, CS: ConstraintSystem<E>
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{
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assert_eq!(a_pk.len(), 256);
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assert_eq!(value.len(), 64);
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assert_eq!(rho.len(), 256);
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assert_eq!(r.len(), 256);
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let mut image = vec![];
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image.push(Boolean::constant(true));
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image.push(Boolean::constant(false));
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image.push(Boolean::constant(true));
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image.push(Boolean::constant(true));
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image.push(Boolean::constant(false));
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image.push(Boolean::constant(false));
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image.push(Boolean::constant(false));
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image.push(Boolean::constant(false));
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image.extend(a_pk.iter().cloned());
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image.extend(value.iter().cloned());
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image.extend(rho.iter().cloned());
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image.extend(r.iter().cloned());
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sha256(
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cs,
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&image
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)
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}
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