logos-storage/gnark-plonky2-verifier
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sha scaffold

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This commit is contained in:
Jacob Jackson 2022-10-03 23:24:18 +00:00
parent eb72b54acd
commit bbab641287
2 changed files with 29 additions and 0 deletions
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1
cubic.go
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@ -22,6 +22,7 @@ import (
"github.com/consensys/gnark/frontend/cs/r1cs"
"github.com/consensys/gnark/backend/groth16"
_ "gnark-ed25519/edwards_curve"
_ "gnark-ed25519/sha512"
)
// Circuit defines a simple circuit

28
sha512/ch.go Normal file
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@ -0,0 +1,28 @@
package sha512
import (
"github.com/consensys/gnark/frontend"
)
func Ch_t512(api frontend.API, a, b, c [] frontend.Variable) ([] frontend.Variable) {
n := len(a)
if len(a) != n { panic("bad length") }
if len(b) != n { panic("bad length") }
if len(c) != n { panic("bad length") }
out := make([] frontend.Variable, n)
for k := 0; k < n; k++ {
out[k] = api.Add(api.Mul(a[k], api.Sub(b[k], c[k])), c[k]);
}
return out
}
// template Ch_t512(n) {
// signal input a[n];
// signal input b[n];
// signal input c[n];
// signal output out[n];
// for (var k=0; k<n; k++) {
// out[k] <== a[k] * (b[k]-c[k]) + c[k];
// }
// }