refactor: public key compression #77
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0xmad
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0xmad
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Nov 19, 2023
circuits/verify_nullifier.circom
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| if (i == 1) { | ||
| binary[33*i + j] = Num2Bits(8); | ||
| binary[33*i + j].in <== pk_compressed[j]; | ||
| } else { | ||
| binary[33*i + j] = Num2Bits(8); | ||
| binary[33*i + j].in <== compressors[i].compressed[j]; | ||
| } |
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Formatting should be fixed here
circuits/verify_nullifier.circom
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| for (var i = 0; i < 2; i++) { | ||
| for (var j = 0; j < k; j++) { | ||
| c_sha256.coordinates[i][j] <== g[i][j]; | ||
| c_sha256.coordinates[2+i][j] <== pk[i][j]; |
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Is it expected as removed line?
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Yes, pk is passed as input right before in compressed form
circuits/verify_nullifier.circom
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| @@ -144,7 +151,7 @@ template check_ec_equations(n, k, message_length) { | |||
| signal input c[k]; | |||
| signal input s[k]; | |||
| signal input plume_message[message_length]; | |||
| signal input pk[2][k]; | |||
| signal input pk_compressed[33]; | |||
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Why is it fixed magic value 33?
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compressed point is 33bytes
circuits/verify_nullifier.circom
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| signal input preimage_bit_length; | ||
| signal output out[256]; | ||
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| // compress coordinates | ||
| component compressors[6]; |
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Why did you change it and why is it magic variable?
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we only need 5 compressors as pk is already compressed
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@RajeshRk18 please rebase with current main branch so PR has only commits related to this issue. |
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This reverts commit 8274ab7.
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Fixes #14