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15 Commits

Author SHA1 Message Date
therealyingtong 12cef17559 Cleanups and minor refactors. 
Co-authored-by: Jack Grigg <jack@electriccoin.co>
 2021-06-29 12:02:54 +08:00
therealyingtong 2ec30943b3 Configure each Sinsemilla advice column for use with a K-bit lookup. 
Inputs to Sinsemilla often need to be decomposed and range-constrained.
 2021-06-25 15:07:27 +08:00
therealyingtong bdcdb8ac13 Move witness_message() and witness_message_piece_bitstring() to gadget level 
These instructions were not making any assignments; instead, they
were calling through to witness_message_piece_field().

This PR also renames the witness_message_piece_field() instruction
to witness_message_piece().
 2021-06-25 15:07:27 +08:00
therealyingtong 6fdee71667 Adjustments to APIs in sinsemilla::chip and sinsemilla::message. 2021-06-25 15:07:27 +08:00
Daira Hopwood 8af84479b3 Rename "Sinsemilla gate" constraint to "y check". 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-21 17:04:47 +01:00
therealyingtong bd08808566 SinsemillaChip::configure(): Merge "Initial y_q" gate with main gate 
This allows the MockProver to see the fixed_y_q query as semantically
connected to q_sinsemilla1.

Co-authored-by: Jack Grigg <jack@electriccoin.co>
 2021-06-20 20:56:56 +08:00
str4d 5f5238f411
Doc comment fixes 2021-06-20 11:30:43 +01:00
therealyingtong 744f3d1653 SinsemillaChip::configure(): Combine and label gates. 
The gates "Secant line" and "Sinsemilla gate" were using the same
selectors and could be combined.

Co-authored-by: Jack Grigg <jack@electriccoin.co>
 2021-06-20 11:26:59 +08:00
therealyingtong 031bb0bc87 SinsemillaChip::configure(): Introduce closures for Y_A and x_r 
These expressions are derived multiple times in the gates.

Co-authored-by: Jack Grigg <jack@electriccoin.co>
 2021-06-20 10:43:24 +08:00
therealyingtong 9072ed437d generator_table.rs: Fix bug in y_p lookup expression. 
Also, GeneratorTable::configure() was not being called in the main
SinsemillaChip::configure(), which meant the lookup argument had
not been activated. This has now been fixed.

Co-authored-by: Jack Grigg <jack@electriccoin.co>
 2021-06-20 10:34:03 +08:00
therealyingtong eba2172f4f chip::hash_to_point.rs: Implement hash_to_point instruction. 2021-06-19 18:17:10 +08:00
therealyingtong f122e481a7 sinsemilla::chip.rs: Configure Sinsemilla gates. 2021-06-19 18:17:09 +08:00
therealyingtong 7cddc9b587 sinsemilla::chip.rs: Implement witness_message_* APIs. 
witness_message() witnesses a full message given a bitstring.

The other two APIs, witness_message_piece_bitstring() and
witness_message_piece_field(), both witness a message piece, i.e.
part of a message that fits within a single base field element.

witness_message_piece_bitstring() takes in a bitstring, while
witness_message_piece_field() takes in a field element. In the
latter case, the number of words encoded must be specified.
 2021-06-19 18:14:22 +08:00
therealyingtong 74e617b46d chip::generator_table.rs: Load Sinsemilla generator lookup table. 
The 2^K table of generators used in the Sinsemilla hash. These
are loaded into a lookup table.
 2021-06-19 18:14:22 +08:00
therealyingtong ebb7dae063 sinsemilla::chip.rs: Add Sinsemilla chip. 
The chip that will implement SinsemillaInstructions.
 2021-06-19 18:14:22 +08:00