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1289 Commits

Author SHA1 Message Date
Daira Hopwood 27dc2a5fc4 Regenerate PDFs. 2021-06-28 18:10:48 +01:00
Daira Hopwood 671451008a Add a step to the algorithm for generating an Orchard note in \crossref{orchardsend}, to restart if esk = 0. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-28 18:06:10 +01:00
Daira Hopwood b4928747cc Explicitly say that padding in \crossref{concretesinsemillahash} is by appending zero bits. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-28 18:06:10 +01:00
Daira Hopwood c6247f4bd5 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-28 18:06:10 +01:00
Daira Hopwood ca6d988177 Correct the type of Uncommitted^Orchard, which should be P_x rather than a bit sequence. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-28 18:06:10 +01:00
Daira Hopwood aec18d6aa8 Regenerate PDFs. 2021-06-26 21:32:35 +01:00
Daira Hopwood dea48add07 Set Change History entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 21:27:26 +01:00
Daira Hopwood 00074e8084 Add ZIPs 203, 212, and 213 to the list of ZIPs updated for NU5. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 21:27:26 +01:00
Daira Hopwood 048c1bf24c Update \crossref{notept} for Orchard. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood 7a8b12d945 * Require that from NU5 activation, the `nExpiryHeight` field of a coinbase transaction is set 
to the block height. This is needed to maintain the property that all transactions have unique
  transaction IDs, as explained in a note in \crossref{txnencodingandconsensus}.
* In order to avoid the block height being limited to 499999999, we also remove that bound on
  `nExpiryHeight` for \coinbaseTransactions.
* Remove the recommendation to support 63-bit block heights in \crossref{blockchain} (since it is
  incompatible with the above consensus rule for coinbase `nExpiryHeight`).

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood ad8bd025b1 The Groth16 `zkproof` field in a JoinSplit description should be colour-coded for Sapling. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
teor 5503f766fd Explicitly apply `MAX_MONEY` to Orchard. 
Co-authored-by: teor <teor@riseup.net>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood 4ca7409f6f Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood 5dff090737 Give cross-references to \crossref{notation} where $\optsqrt$ and $\possqrt$ are used. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood f31b335fe9 Refine the key components diagram in \crossref{addressesandkeys} to show that Orchard incoming 
viewing keys include both dk and ivk.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:37 +01:00
Daira Hopwood 6055cca71e Ensure that the layer number is passed to MerkleCRH in \crossref{merklepath}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-26 18:41:36 +01:00
Daira Hopwood 721dd2483f Regenerate PDFs. 2021-06-19 20:12:11 +01:00
Daira Hopwood ea0f196a92 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-19 20:05:47 +01:00
Daira Hopwood 09f944d90c Change the consensus rule that requires at least one input to, and at least one output from a v5 
or later transaction, to take into account the enableSpendsOrchard and enableOutputsOrchard flags.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-19 20:05:47 +01:00
Daira Hopwood 321eed99b4 Correct the type of Extract_P^bot imported in \crossref{concretesinsemillahash}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-19 20:05:47 +01:00
Daira Hopwood 6e6fd1605e Add ZIP 209 to the list of ZIPs updated for NU5. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-19 20:05:47 +01:00
Daira Hopwood 814ad87b40 Regenerate PDFs. 2021-06-08 12:39:25 +01:00
Daira Hopwood cc71722eca Set Change History entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-08 12:33:29 +01:00
Daira Hopwood ebd54d5ad6 Add an explicit consensus rule in \crossref{txnencodingandconsensus} that the reserved bits of 
the flagsOrchard field MUST be zero.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-08 12:33:08 +01:00
Daira Hopwood d25f3c1f47 Correct a cut-and-paste error algorithm for \crossref{orcharddummynotes}, 
which should refer to the Action statement rather than the Spend statement.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-08 10:00:44 +01:00
Daira Hopwood 7d2480648a Regenerate PDFs. 2021-06-06 03:45:32 +01:00
Daira Hopwood 0a985b9c13 Set date for Change History entry. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-06 03:39:06 +01:00
Daira Hopwood 106e73e461 Make the NU5 specification the default. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-06 03:39:06 +01:00
Daira Hopwood e3667dc30d Add ZIP 239 to the list of ZIPs included in NU5. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-06 03:39:06 +01:00
Daira Hopwood 577bb20832 Use "Bech32[m]" when saying that there is no dedicated string encoding for Orchard payment addresses 
and viewing keys.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-06 03:24:47 +01:00
Daira Hopwood 8f3f36fef5 Specify that Orchard spending keys are encoded using Bech32m. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-06 03:02:44 +01:00
Daira Hopwood ccaa100141 Reference [SVPBABW2012]: link to the ePrint summary page rather than the PDF. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 99e5d92843 Clarify that epk encoded in an Action description cannot be the zero point. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood c4b65c39cc Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 9bc46070f3 Say that the round constants as well as the MDS matrices are generated according to Version 1.1 
of the Poseidon reference implementation.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 5fa8a60b08 Specify (as a note in \crossref{actionstatement}) the encoding of primary inputs to the action circuit. 
This uses new helper functions $\Selectx$ and $\Selecty$ defined in \crossref{concreteextractorpallas}.
The specification of Extract_P has also been refactored to use $\Selectx$ (this does not change the Orchard protocol).

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 6a0c15df29 Move the section on abstraction to the Abstract Protocol section, and split section 5.2 to avoid renumbering. 
fixes #512

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood f4a0a1284e Delete a misleading sentence about Ed25519 encodings being specified in \cite{BDLSY2012}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 9e2938b555 Correct an error in the specification of height-in-coinbase for block heights 1..16. 
Also clarify requirements on the range of block heights that should be supported.
fixes #517

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 530f00e150 Update title of ZIP 316. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-06-05 16:55:05 +01:00
Daira Hopwood 44ad348ce6 Regenerate PDFs. 2021-05-20 22:27:53 +01:00
Daira Hopwood c3f48359e6 Clarify that v4 transactions continue to use the ZIP 243 SIGHASH algorithm after NU5 activation. 
fixes #510

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-20 22:23:19 +01:00
Daira Hopwood 572a0d6e4f Regenerate PDFs. 2021-05-20 22:02:23 +01:00
Daira Hopwood 0ab0bcb7cb Set Change History entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-20 21:57:49 +01:00
Daira Hopwood eb5a018396 Note that [JT2020] proves a tight reduction from finding a nontrivial discrete log relation to DLP. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-20 21:57:03 +01:00
Daira Hopwood b6e50f8252 Clarify the distinction between Orchard incoming viewing keys and KA^Orchard private keys. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-20 21:47:34 +01:00
Daira Hopwood e7ec658413 Cosmetics and indexing. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-20 21:45:59 +01:00
Daira Hopwood c90528fa5c Change the notation \mathcal{I}^D_i for a Sapling Pedersen generator to \mathcal{I}(D, i). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-18 21:11:09 +01:00
Daira Hopwood 9f948307cf Change the type of Orchard Merkle hashes to \mathbb{P}_x, with a corresponding change to the 
signature of MerkleCRH^Orchard. Add a note to \crossref{merklepath} clarifying that non-canonical
encodings are allowed as input to MerkleCRH^Orchard.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-18 21:07:10 +01:00
Daira Hopwood 67cea8589a Add a note to \crossref{merklepath} clarifying the encoding of rt^Sapling as a primary input to 
the Sapling spend circuit, and that non-canonical encodings are allowed as input to MerkleCRH^Sapling.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-18 20:39:42 +01:00
Daira Hopwood c5589648c1 Cosmetics (vertical spacing for the non-NU5 spec). 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-18 15:37:06 +01:00
Daira Hopwood 79d1a477db Add Change History entry for the correction to the size of vActionsOrchard. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-18 15:37:06 +01:00
teor 3f3195eb5c Fix Orchard Action byte size 
Since the signature is now separate, the size is 64 bytes smaller.
 2021-05-18 15:37:06 +01:00
Daira Hopwood e9430c3752 Regenerate PDFs. 2021-05-07 16:41:22 +01:00
Daira Hopwood 74c83f6d59 Set history entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:35:22 +01:00
Daira Hopwood 205b2f5861 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:35:22 +01:00
Daira Hopwood d0caaa2ee9 Clarify that transparent inputs are prohibited in coinbase transactions only if they have a non-null `prevout` field. closes #498 
Co-authored-by: teor <teor@riseup.net>
Co-authored-by: Jack Grigg <jack@electriccoin.co>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:35:13 +01:00
teor 330254c9ca Add ZIP-244 block commitments as a consensus rule. closes #499 
It's currently just a note, which makes it look like the Heartwood rule might still apply.

Co-authored-by: teor <teor@riseup.net>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:34:36 +01:00
Daira Hopwood 296b8e6543 Make "Discrete Logarithm Problem" and "Decisional Diffie–Hellman Problem" indexed terms. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 1db1224657 Unlinkability of diversified addresses depends on DDH, not DLP. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 4353accc0e Add [Canopy onward] and [NU5 onward] to a couple of notes. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood e4af6e42a0 State explicitly that valueBalanceOrchard can only be negative in a coinbase transaction if 
it has ZIP 213 shielded outputs.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 639a554a04 Change the statement of Theorem 5.4.3 to exclude ⊥ outputs from SinsemillaHashToPoint. 
Previously the proof did not match the statement.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood d7bd67900a Update the list of ZIPs relevant to NU5 in \crossref{networkupgrades}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 00c39b73e0 Delegate to ZIP 316 for the specification of unified payment addresses and unified viewing keys. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 38b740aad2 Caveat how the result of \cite{GG2015} applies to analysis of PRF^nfOrchard in \crossref{concreteprfs}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 4804f6040e Add a paragraph to \crossref{truncation} covering Orchard. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 748e6f8f37 Typo. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 35c8af6e47 DJB's "High-speed cryptography" book seems completely stalled. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 58add67726 * Specify that diversifier indices for Orchard should be chosen uniquely, not randomly. 
* Vanity diversifiers are not an issue for Orchard given that it does not have its own
  payment address format, and given the use of "jumbling" (ZIP 316) in unified addresses.
  Remove the corresponding note from \crossref{orchardkeycomponents}.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 2cf14204ae Clarify the definition of pad in \crossref{concretesinsemillahash} by disambiguating M^pieces from M^padded. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood ac16945288 Clarify notation by changing ℓ_rcm to ℓ^Sprout_rcm. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 3034a2a662 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood adc28d2bb1 Include ρ as an input to the derivation of ψ, esk, and rcm in Orchard. 
This was originally intended and as described in Section 3.5 of the Orchard Book.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-05-07 16:03:16 +01:00
Daira Hopwood 76c8a4689a Regenerate PDFs. 2021-04-23 22:39:41 +01:00
Daira Hopwood 71a19e7484 Clarify that only an outgoing cipher key is strictly needed to decrypt an outgoing ciphertext. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood 27aa7c484a Remove an unused precomputation in \crossref{concretegrouphashpallasandvesta}. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood ecba2451bc Include the diversifier key in an encoded Orchard Incoming Viewing Key. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood 4dbf2f02d4 Cosmetics. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood 710fee607a Add the nConsensusBranchId field to v5 transactions, matching the consensus branch ID 
used for SIGHASH transaction hashes.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood 10710d92a6 Explicitly say that coinbase transactions MUST NOT have transparent inputs 
(this is a consensus rule inherited from Bitcoin which has been present since launch).

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-23 22:31:37 +01:00
Daira Hopwood 2e6cdb3945 Regenerate PDFs. 2021-04-19 00:36:48 +01:00
teor 0cfeea2ecb Use a different symbol for each v5 Sapling field cardinality rule. 
Currently, the spec uses the double dagger symbol for both:
* present if and only if `nSpendsSapling + nOutputsSapling > 0`;
* present if and only if `nSpendsSapling > 0`.

To avoid confusion, use dagger for the first rule, and double dagger for the second rule.

Co-authored-by: teor <teor@riseup.net>
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:32:00 +01:00
Daira Hopwood 1c46e9aa5d Add Change History entries for already committed changes. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:18:47 +01:00
Daira Hopwood c4d7331191 Set Change History entry date. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
Daira Hopwood 65590101a8 When creating Orchard notes, repeat with another rseed if cm is \bot. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
Daira Hopwood 3d230f8d26 Type corrections for Orchard. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
Daira Hopwood 15d59f11c4 Add note about non-uniformity of Orchard ivk. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
Daira Hopwood 119abe37c3 ExtractP(\ZeroP) should be 0, and ExtractP^\bot(\bot) should be \bot. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
Daira Hopwood 1df0f60deb Add support for link checking to protocol/links_and_dests.py and protocol/Makefile. 
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
 2021-04-19 00:12:37 +01:00
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