mirror of https://github.com/waku-org/go-rln.git
39 lines
1.5 KiB
Go
39 lines
1.5 KiB
Go
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package rln
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import "encoding/binary"
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// serialize converts a RateLimitProof and the data to a byte seq
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// this conversion is used in the proofGen function
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// the serialization is done as instructed in https://github.com/kilic/rln/blob/7ac74183f8b69b399e3bc96c1ae8ab61c026dc43/src/public.rs#L146
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// [ id_key<32> | id_index<8> | epoch<32> | signal_len<8> | signal<var> ]
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func serialize(idKey IDKey, memIndex MembershipIndex, epoch Epoch, msg []byte) []byte {
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memIndexBytes := make([]byte, 8)
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binary.LittleEndian.PutUint64(memIndexBytes, uint64(memIndex))
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lenPrefMsg := appendLength(msg)
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output := append(idKey[:], memIndexBytes...)
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output = append(output, epoch[:]...)
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output = append(output, lenPrefMsg...)
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return output
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}
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// serialize converts a RateLimitProof and data to a byte seq
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// this conversion is used in the proof verification proc
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// the order of serialization is based on https://github.com/kilic/rln/blob/7ac74183f8b69b399e3bc96c1ae8ab61c026dc43/src/public.rs#L205
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// [ proof<256>| root<32>| epoch<32>| share_x<32>| share_y<32>| nullifier<32> | signal_len<8> | signal<var> ]
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func (r RateLimitProof) serialize(data []byte) []byte {
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lenPrefMsg := appendLength(data)
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proofBytes := append(r.Proof[:], r.MerkleRoot[:]...)
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proofBytes = append(proofBytes, r.Epoch[:]...)
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proofBytes = append(proofBytes, r.ShareX[:]...)
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proofBytes = append(proofBytes, r.ShareY[:]...)
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proofBytes = append(proofBytes, r.Nullifier[:]...)
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proofBytes = append(proofBytes, lenPrefMsg...)
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return proofBytes
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}
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