'Private Transactions: Insights to the Design Principles in ZCash and Aleo' sin7y zcash
The entire transaction structure consists of four parts:2.5.2 From Transparent to Shield
The Orchard protocol includes two types of addresses, transparent address and shield address . Generally, in order to execute a private transaction, it is necessary to transfer from TA to SA first. The corresponding transaction structure should be:All : default valueThe Orchard protocol includes two types of addresses, transparent address and shield address . Generally, in order to execute a private transaction, it is necessary to transfer from TA to SA first.
Therefore, the structures of the two are quite similar; the main differences exist in the birth predicate and death predicate of the record, which are two Boolean-type functions, representing the conditions that need to be met when a record is in the birth and death stages. This part supports user-defined, so it’s programmable.
The corresponding serial number sn of the spent record, which is represented by nf in Zcash, is uniqueThe plaint of the new record, including owner information, corresponding birth/death predicate, etcThe new record validityFrom the perspective of the paper, the privacy design of Aleo 's programmable privacy design is more similar to the earlier Zcash white paper , the similar key structure, the similar note structure and the similar name .
In addition to the technical details described above, there are still some other technical details that have not been mentioned yet, such as the delegate prover scheme, zero-knowledge proof algorithm, recursion/aggregation scheme, and so on. People interested in them can study further.
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