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