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81 lines
1.9 KiB
81 lines
1.9 KiB
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 SmallSigma512(api frontend.API, in []frontend.Variable, ra, rb, rc int) ([]frontend.Variable) {
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if len(in) != 64 { panic("bad length") }
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rota := RotR512(in, ra)
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rotb := RotR512(in, rb)
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shrc := ShR512(in, rc)
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return Xor3_512(rota, rotb, shrc)
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}
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// template SmallSigma512(ra, rb, rc) {
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// signal input in[64];
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// signal output out[64];
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// var k;
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// component rota = RotR512(64, ra);
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// component rotb = RotR512(64, rb);
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// component shrc = ShR512(64, rc);
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// for (k=0; k<64; k++) {
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// rota.in[k] <== in[k];
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// rotb.in[k] <== in[k];
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// shrc.in[k] <== in[k];
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// }
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// component xor3 = Xor3_512(64);
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// for (k=0; k<64; k++) {
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// xor3.a[k] <== rota.out[k];
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// xor3.b[k] <== rotb.out[k];
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// xor3.c[k] <== shrc.out[k];
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// }
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// for (k=0; k<64; k++) {
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// out[k] <== xor3.out[k];
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// }
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// }
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func BigSigma512(api frontend.API, in []frontend.Variable, ra, rb, rc int) ([]frontend.Variable) {
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if len(in) != 64 { panic("bad length") }
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rota := RotR512(in, ra)
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rotb := RotR512(in, rb)
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rotc := RotR512(in, rc)
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return Xor3_512(rota, rotb, rotc)
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}
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// template BigSigma512(ra, rb, rc) {
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// signal input in[64];
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// signal output out[64];
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// var k;
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// component rota = RotR512(64, ra);
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// component rotb = RotR512(64, rb);
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// component rotc = RotR512(64, rc);
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// for (k=0; k<64; k++) {
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// rota.in[k] <== in[k];
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// rotb.in[k] <== in[k];
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// rotc.in[k] <== in[k];
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// }
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// component xor3 = Xor3_512(64);
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// for (k=0; k<64; k++) {
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// xor3.a[k] <== rota.out[k];
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// xor3.b[k] <== rotb.out[k];
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// xor3.c[k] <== rotc.out[k];
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// }
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// for (k=0; k<64; k++) {
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// out[k] <== xor3.out[k];
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// }
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// }
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