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Author SHA1 Message Date
Daira Hopwood 65ebb2266d Fix some URLs in references. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
teor 572338f01a Add action descriptions to the Note Commitments section intro 2021-04-13 09:45:33 -04:00
teor 151e8c9661
Typo: Decription -> Description 2021-04-12 11:07:03 +10:00
Daira Hopwood 761485e6c6 Regenerate PDFs. 2021-04-05 23:09:13 +01:00
Daira Hopwood e23cc72ac6 Work around bug in `release` target of protocol/Makefile. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 23:03:52 +01:00
Daira Hopwood 88c338b9e1 Specify that a unified payment address MUST contain at least one shielded payment address. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 22:12:29 +01:00
Daira Hopwood 18fbfdefe5 Correct ZKSpend.Verify to ZKOutput.Verify in \crossref{outputdesc}. fixes #481 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 22:00:53 +01:00
Daira Hopwood cc9c41a598 More clarifications to \theoremref{thmsinsemillacr}. 
Co-authored-by: Taylor Hornby <taylor@electriccoin.co>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 21:51:59 +01:00
Daira Hopwood 1f041f955a Add links_and_dests.py. 
This can be used to print outgoing links and targets in the PDF, and detect a subset of errors.
It depends on the PyPDF2 library (pip3 install PyPDF2).

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 21:51:05 +01:00
Daira Hopwood 4f50d5e515 Make sure that Change History entries are URL destinations. fixes #462 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 21:51:00 +01:00
Daira Hopwood 46fefcaf56 Update all references to https URLs (and the year of the Unicode Standard to 2020). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-05 21:44:19 +01:00
Daira Hopwood 404248cb92 Regenerate PDFs. 2021-04-01 02:19:32 +01:00
Daira Hopwood a0d048ed1e Update Change History entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 417076e50d Make a note in \crossref{inbandrationale} of the divergence of ivk from a uniform scalar. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 1eec1f9832 Remove anchorSapling field when there are no Spends. 
This corresponds to e0b08fd576 in ZIP 225.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 49f3b206f5 Fix type error in kdfinput for KDF^{Sapling,Orchard} (`ephemeralKey` is already a byte sequence). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 41580ec06d Cosmetics in Sapling Output statement. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood c367a22098 Explicitly note that the end of the ZIP 212 grace period precedes NU5 activation. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 3a312dc5a9 Expand the set of ZIPs associated with NU5 in \crossref{networkupgrades}, and reference the Orchard and halo2 books there. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 6c3099843d Add a caveat about reuse of rivk between PRF^expand and Commit^ivk. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 3826d43930 Correct the set of inputs to PRF^expand used for ZIP 32 and Orchard in \crossref{abstractprfs}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood de0bc97bb2 Cosmetics (page breaking). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood bb985e039a Section \crossref{concreteorchardkdf} should be in the NU5 colour (slate blue). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Deirdre Connolly ec6c10fc5c Add a note to the Sending Notes (Orchard) section about using a dummy note for ρ. 
Co-authored-by: Deirdre Connolly <deirdre@zfnd.org>
Co-authored-by: Daira Hopwood <daira@jacaranda.org>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 6c8f9fb478 Update the Sprout key component diagram in \crossref{addressesandkeys} to remove magenta highlighting.Remove magenta highlighting 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood e1f105eaa1 Add note about use of big-endian order in the encoding of BLS12-381 points. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 3a55af9b1f Cosmetics and indexing. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 7bfdce2d6a Write caution about linkage between the abstract and concrete protocols in \crossref{cautionlinkage}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood 1097313feb Fix errors in the Sinsemilla proofs: 
* SinsemillaHash is defined in terms of SinsemillaHashToPoint, which also takes the D argument.
* correct errors due to 1-based indexing.
* the argument for exceptional cases got the scalars and range of j wrong.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood cce172ace8 Cosmetics (page breaking). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
Daira Hopwood f45b6b5d66 Add Action Statement ref to flags note 
This change makes it clearer that the note spend and creation
rules are implemented as part of the proof.

Co-authored-by: teor <teor@riseup.net>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-01 02:11:35 +01:00
teor ecb2ccd3f4 Copy outCiphertext description to the encoding tables 2021-04-01 02:11:35 +01:00
Daira Hopwood 0f427feb5b Regenerate PDFs. 2021-03-26 19:45:47 +00:00
Daira Hopwood f66887cdee Fix an off-by-one error. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 19:40:57 +00:00
Daira Hopwood 3898e2f571 Regenerate PDFs. 2021-03-26 19:38:49 +00:00
Daira Hopwood b4aac633f4 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 19:31:45 +00:00
Daira Hopwood 2f246ce24d Other fixes to the Orchard specification, including generation of dummy notes and output notes. 
fixes #465

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 19:17:33 +00:00
Daira Hopwood aa86282e16 Change the specifications of note decryption to return the note and memo, rather than a note plaintext. 
Generalize the specification of block chain scanning to support Orchard.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood c50bdbd9ce Delete a confusing part of the definition of concatbits that we don't rely on. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood b27213dfd3 Move the definition of ⊥ to before its first use. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood cd1b4de8f9 Update the hashFinalSaplingRoot/hashLightClientRoot/hashBlockCommitments field for NU5. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood 74dfa80194 Fix errors in Orchard due to cut-and-paste from Sapling. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood 4d3204b8e1 Describe the recommended way to encode a Sapling or unified payment address as a QR code. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood bbc6131f29 Update specification of Poseidon. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:58 +00:00
Daira Hopwood 212fdc8752 Add references for the halo2 book. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 5e55821889 NCC audit: Make the description of when fields are included in v5 transactions consistent 
between the protocol specification and ZIP 225. Also regenerate the HTML for ZIP 225.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 55af963e53 NCC audit: Add a definition for the section symbol in \crossref{introduction}, before its first use. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 5fef9270e2 NCC audit: Correct the sizes of SpendDescriptionV5 and OutputDescriptionV5 in the version transaction format. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood bfc6a8e33c NCC audit: Document the limitation on the domain separation string for the group hash into Pallas/Vesta. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood a68c7d24d0 NCC audit: Document that the choice of nonsquare for λ_G in \crossref{concretegrouphashpallasandvesta} makes no difference 
to the output of map_to_curve_simple_swu.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood fa2b1c6ce9 Correct the output type of sqrt_ratio. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood ab0e248036 NCC audit: Document that the use of k = 256 in hash_to_field is intentional, 
despite the Pallas curve only having 126-bit conjectured security against generic attacks.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 9d62142142 NCC audit: Fix a discrepancy between \crossref{concretegrouphashpallasandvesta} and \cite{ID-hashtocurve}. 
The zero padding in expand_message_xmd should be 128 bytes (matching the input block size of
BLAKE2b), rather than 64 bytes.

See also https://github.com/zcash/pasta/pull/2 and https://github.com/zcash/pasta_curves/issues/7

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 5d15a3d91e NCC audit: Fix type confusion between integers and field elements (including additional cases 
not found in the audit, involving nullifiers and cm_x).

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 7ccbf44c30 NCC audit: Define \mathbb{G} in \crossref{concretegrouphashpallasandvesta}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 4d983aa855 NCC audit: Make the naming of enableSpends and enableOutputs consistent. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood e5336bb536 Various rationale updates for NU5. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 8f1ff76417 Add proof of collision resistance for Sinsemilla. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 591c7e45cc NCC audit: Restrict the definition of a short Weierstrass elliptic curve 
to base fields of characteristic greater than 3.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 2e50a09e97 NCC audit: Correct the definition of PRFnf^Orchard by changing Poseidon to PoseidonHash. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood b7d61884e1 NCC audit: Propagate \bot from the inputs of MerkleCRH^Orchard to its output, and add an explicit 
consensus rule that rt^Orchard computed from appending a note commitment is not \bot.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood c11c329beb NCC audit: Propagate \bot intermediate results to the output of Sinsemilla primitives. 
Change the output types of NoteCommitAlg^Orchard and CommitIvkAlg to reflect that these can
return \bot, and change the action statement to be satisfied if they do.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood 20478ae40d Credit Eirik Ogilvie-Wigley as a designer of the Zcash protocol. Add Andre Serrano, Brad Miller, 
Charlie O'Keefe, David Campbell, Elena Giralt, Francisco Gindre, Joseph Van~Geffen, Josh Swihart,
Kevin Gorham, Larry Ruane, Marshall Gaucher, and Ryan Taylor to the acknowledgements.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:57 +00:00
Daira Hopwood b14c332910 NCC audit: Correct the definition of c in \crossref{concretesinsemillahash}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:23:51 +00:00
Daira Hopwood 54a0894acf NCC audit: fix 'reasonable' typo. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:22:50 +00:00
Daira Hopwood 02db965036 Cosmetics and trivial changes. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-26 18:22:50 +00:00
Daira Hopwood 44c45004df Cosmetics and trivial changes. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-23 20:01:13 +00:00
Daira Hopwood 218196f8dd Output ciphertext -> outgoing ciphertext. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-23 19:27:47 +00:00
Daira Hopwood e1bdfce3bc Remove specification of memo contents, which will be in ZIP 302. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-23 19:21:56 +00:00
Deirdre Connolly 75a8a944d4 s/enableSpendsOrchard/enableOutputsOrchard/ re: no new notes 2021-03-19 15:14:26 +00:00
Daira Hopwood a859014b98 Correct the description of `length` in \crossref{unifiedpaymentaddrencoding}. 
(It is the length of `addr`, not the length of the raw encoding; they differ for t-addrs.)

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-19 15:14:25 +00:00
Daira Hopwood 781ec6896d Correct the type signature of DiversifyHash^Orchard in \crossref{abstracthashes}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-19 15:14:25 +00:00
Daira Hopwood 3e160d6ecb 2^16 -> 2^{16}. fixes #461 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-19 15:14:25 +00:00
Daira Hopwood 9af5978852 Remove magenta highlighting of differences from Zerocash. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-19 15:14:25 +00:00
Daira Hopwood 78e3d68539 Remove support for generating the Sprout-only specification (sprout.pdf). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-19 14:00:19 +00:00
Daira Hopwood ebe3800b2b Regenerate PDFs. 2021-03-17 20:00:51 +00:00
Daira Hopwood f0fa13761e Regenerate PDFs. 2021-03-17 19:55:50 +00:00
Daira Hopwood 3b558b2146 Set date in Change History entry for v2021.1.19. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:49 +00:00
Daira Hopwood c5c34cf93c Cosmetics (spacing). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:49 +00:00
Daira Hopwood 0b8a4b3d90 Correct the range of input to ValueCommit^Orchard in the action statement, and the corresponding security argument in \crossref{orchardbalance}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:48 +00:00
Daira Hopwood e31f33c678 Fix a type error in the non-normative note at the end of \crossref{concretesinsemillacommit}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:48 +00:00
Daira Hopwood 867d0cc712 Make DiversifyHash^Orchard total, by replacing an output of the zero point with another base. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:48 +00:00
Daira Hopwood c9b918a654 Fix a typo: 2^16 -> 2^{16}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:48 +00:00
Daira Hopwood 17518632e1 Update the consensus rules that prevent trivial transactions (with no inputs or outputs) 
to take into account action transfers in the v5 transaction format.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-17 19:55:48 +00:00
Daira Hopwood cec8b904c5 Regenerate PDFs. 2021-03-17 02:11:38 +00:00
Daira Hopwood 36074af67b Version 2021.1.18: 
* Define unified payment addresses in place of the Bech32 form of Orchard addresses.
* Remove Sprout-specific fields from the v5 transaction format.
* The rho value for an Orchard output note was incorrectly described as being derived from
  rseed, instead of being set to the nullifier from the same action description as intended
  (fixes #459 ).
* The psi value is now derived using the PRF^expand input [9], instead of [10] (refs #459 ).
* Correct a note about the range of the Merkle hash inputs in \crossref{actionstatement}.
* Correct the validity condition for ak in \crossref{orchardfullviewingkeyencoding}.
* Add a definition for K^Orchard in \crossref{commitmentsandnullifiers} (fixes #460 ).
* Correct the number of full and partial rounds for Poseidon.
* Add a note explaining the origin of the 2^{65} constant in the definition of PoseidonHash.
 2021-03-17 02:06:38 +00:00
Daira Hopwood 27a39088d6 Regenerate PDFs. 2021-03-15 16:27:53 +00:00
Daira Hopwood ad032d456a More WIP: 
* fix the use of inputs to PRF^expand in Orchard note encryption;
* rename "hash extractor" to "coordinate extractor";
* miscellaneous minor fixes;
* set date of Change History entry.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 37d8221c4d Mainly fixes to the Action statement. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood d79de34b4a Update key components diagram. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 7cc31111bb Yet more WIP. Nullifier derivation for Orchard is correct now. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood f6fb3c80d7 More WIP. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 6ac5901a42 More WIP, and rename orchard.pdf to nu5.pdf. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood dae8852187 More Orchard WIP. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood e62d57959e More WIP. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 6453611314 * More Orchard WIP; 
* The definition of a represented group abstraction function incorrectly required canonicity;
* Note about non-canonical encodings in the Jubjub gave incorrect values for encodings of the point of order 2;
* Change the spec of decryption with ovk to match zcashd (by adding \bot and subgroup checks);
* Add a note saying that a node impl that checkpoints on Sapling can omit verifying BCTV14 proofs.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 68cb4c6d5f Font hack to make sure that italic bold is not too wide. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood a81cfdb693 More WIP! 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood ad9c631ee0 More WIP for Orchard, including hashing to Pallas and Vesta. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00
Daira Hopwood 6215dce577 More WIP 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-03-15 16:18:54 +00:00