Daira Hopwood
afeecbd7b4
Regenerate PDF.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-09-04 04:33:45 +01:00
Daira Hopwood
aefc864cc9
Regenerate PDF.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-05-20 23:37:35 +01:00
Daira Hopwood
d5ac4f792c
Regenerate PDF for 2016.0-alpha-3.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-05-09 21:18:41 +01:00
Daira Hopwood
1226c22929
Regenerate PDF for 2.0-alpha-3.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-05-06 15:48:36 +01:00
Daira Hopwood
9bb4410e45
Regenerate PDF.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-21 03:05:58 +01:00
Daira Hopwood
465ce90631
Try rerendering the key_components diagram with "Convert text to paths", to
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work around a github PDF renderer issue.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-19 01:51:43 +01:00
Daira Hopwood
2a322f8647
Key terminology changes. Also remove some unused macros. fixes #44
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-18 18:31:22 +01:00
Daira Hopwood
859059fb9d
Add note about Merkle tree validity.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-11 22:14:15 +01:00
Daira Hopwood
4c062451d3
Minor refinements. refs #14
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-08 20:55:49 +01:00
Daira Hopwood
c478fa1299
Specify Merkle tree. fixes #14
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-08 20:45:53 +01:00
Daira Hopwood
dcdb0fb3dc
Cosmetics: BLAKE2b-256 macros.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-07 01:55:13 +01:00
Daira Hopwood
cdae617357
BLAKE2b/256 -> BLAKE2b-256.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-06 17:04:04 +01:00
Daira Hopwood
75b8750d59
Require PRF^addr to be collision-resistant. refs ticket:zcash/zcash/836
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-06 14:38:58 +01:00
Daira Hopwood
e2dbad2448
Cosmetic changes to conformance macros.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 17:29:16 +01:00
Daira Hopwood
83ae851aad
Show Daira as lead author and add "as intended for the Zcash release of summer 2016".
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:33:39 +01:00
Daira Hopwood
7826c99919
Minor correction to what sighashes cover.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:20:19 +01:00
Daira Hopwood
015b607650
Cosmetics: fix spacing in section references.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:20:19 +01:00
Daira Hopwood
9f37a0d3c8
Cosmetics: change font of ASCII strings to bold tt.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:20:19 +01:00
Daira Hopwood
389ae76bdb
Change to BLAKE2b/256, and add pubKeyHash indirection. fixes #26
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:20:19 +01:00
Daira Hopwood
76d87e6995
Revert addition of Eli's comments -- moved to eli-comments.0 branch.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-04-04 04:04:07 +01:00
eli.ben.sasson
fb15dd2396
comments through section 5
2016-03-31 11:00:04 +03:00
Daira Hopwood
62f615e459
Clarification of endianness, and that uses of BLAKE2b are unkeyed.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-31 02:21:43 +01:00
Daira Hopwood
d4d095b33d
Update version to 2.0-alpha-1.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 15:42:07 +01:00
Daira Hopwood
0bc03313bf
Changes to signatures.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 15:18:50 +01:00
Daira Hopwood
c19f1d1523
Change bit ordering.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 14:27:43 +01:00
Daira Hopwood
e95fee5ce7
Add lead byte to note plaintext.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 03:47:57 +01:00
Daira Hopwood
5b0c01d6d0
Clarify that we're using the IETF definition of AEAD_CHACHA20_POLY1305,
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and that hSig is an input to the KDF.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 03:32:28 +01:00
Daira Hopwood
fb2492d7e5
Switch to Blake2b for KDF and hSig.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 03:28:01 +01:00
Daira Hopwood
674c5614f2
\serialNumber -> \nullifier and related macro changes.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-30 01:36:34 +01:00
Daira Hopwood
6897bebfe6
Reserve non-UTF-8 lead bytes in memo field.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 15:08:15 +01:00
Daira Hopwood
9397a606b9
Change memos from 64 to 128 bytes.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 03:21:50 +01:00
Daira Hopwood
6f0f88c9de
Change r from 192 to 256 bits.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 03:15:08 +01:00
Daira Hopwood
3dffb0d9c7
Pour/Xfer -> JoinSplit.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 02:28:50 +01:00
Daira Hopwood
263122966a
coin -> note in macro names.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 02:28:07 +01:00
Daira Hopwood
819eb1dac9
transaction -> \transaction
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 01:19:34 +01:00
Daira Hopwood
fedfc3c315
Fix an endianness bug.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 01:17:36 +01:00
Daira Hopwood
6f049a2c8d
Add restriction that either vpubOld or vpubNew is zero.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 01:16:06 +01:00
Daira Hopwood
c338fd141b
Pour descriptions go in transactions, and only indirectly in blocks. fixes #20
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 00:40:09 +01:00
Daira Hopwood
5bf271d993
ephemeralKey is a change from Zerocash.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-29 00:31:11 +01:00
Daira Hopwood
31ce718464
Fix endianness bug in an example.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-23 13:28:17 +00:00
Daira Hopwood
8b5c20cd38
Change i to be the first argument to KDF for consistency with other functions.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-22 20:40:52 +00:00
Daira Hopwood
d4e95b73f6
Change KDF to SHA-512 and add hSig input.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-22 17:41:57 +00:00
Daira Hopwood
8b9851a431
Remove a_pk from note plaintexts. This also fixes a bug where the recipient
...
would incorrectly use the decrypted a_pk to check the coin commitment, rather
than its own a_pk.
(The length of encCiphertexts was already computed assuming this change.)
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 23:36:54 +00:00
Daira Hopwood
5bbbb0bde6
Use standard AEAD_CHACHA20_POLY1305.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 23:32:01 +00:00
Daira Hopwood
d98c941429
Switch to little-endian encoding, consistent with Bitcoin serialization.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 23:19:38 +00:00
Daira Hopwood
350c5ae598
DecryptCoin -> DecryptNote.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 20:37:43 +00:00
Daira Hopwood
c55489fa2d
Fix some macro uses, and rename rn to nf.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 20:29:42 +00:00
Daira Hopwood
5e408580c1
Remove "map" terminology; the spent nullifiers are a set at this level of abstraction.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 20:26:37 +00:00
Daira Hopwood
d60fda0e3d
Rename remnant (serial number) -> nullifier.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 19:48:19 +00:00
Daira Hopwood
0b0295e29e
Fix some cases where macros were not used consistently.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-20 19:46:19 +00:00
Daira Hopwood
08e25a8b21
WIP - new terminology.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-18 21:09:24 +00:00
Daira Hopwood
0e6953a6eb
WIP: Define types for serialized fields.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-18 01:20:44 +00:00
Daira Hopwood
5ebe7b31e0
Specify precisely the data to be signed. This includes a design change
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to use a single signature covering all of the transaction except
pourPubKey and pubSig.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-16 01:36:37 +00:00
Daira Hopwood
57d94a0bf9
Specify precise encoding of ECDSA public key. Also improve description
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of how the public key is bound to the Pour statement.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-16 00:06:01 +00:00
Daira Hopwood
5d3b31b15f
Cosmetics, re-render PDF.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-15 23:23:38 +00:00
Daira Hopwood
10ac791004
Remove viewing keys (except for sk_enc) for now.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-13 02:16:30 +00:00
Daira Hopwood
42954ecdac
Fill in more sections of "Differences from Zerocash".
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-13 01:23:04 +00:00
Daira Hopwood
3d04c384f1
Add Nathan Wilcox to authors.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-09 00:40:08 +00:00
Daira Hopwood
1b1e1f8456
Add lead byte to KDF input.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 21:08:14 +00:00
Daira Hopwood
e15a4fc0a4
Clarify that the nonce to AEAD_CHACHA20_POLY1305 is 96 bits, and the key 256 bits.
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fixes zips/#19
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 17:00:31 +00:00
Daira Hopwood
c57d295a38
Fix definitions of a_vk and a_pk in Pour statement. fixes zips#18
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 16:52:15 +00:00
Daira Hopwood
64c91164ab
Descriptions of scriptSig and scriptPubKey were the wrong way round. fixes zips#17
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 04:53:02 +00:00
Daira Hopwood
2fac159404
Fix index error in computation of hSig.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 04:38:51 +00:00
Daira Hopwood
26df1df754
Define some convenience macros to shorten 1..N^{old,new}.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 04:36:29 +00:00
Daira Hopwood
a1b1cd62c3
Notation.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-07 03:38:00 +00:00
Daira Hopwood
6d25c4beb2
Be more precise about the specification of Curve25519 functions.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-06 23:26:40 +00:00
Daira Hopwood
a9da411767
Rearrange domain separation to make room for greater pour arities, and
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state explicitly the domain separation convention for uses of the full hash.
Also bump the draft number.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-06 22:21:48 +00:00
Daira Hopwood
608c0dbcb0
Fix potential attacks due to unclamped esk provided to a viewing key holder.
...
(The other change from epk to epk* in the KDF input is just for clarity,
since we check that epk* = epk.)
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-06 10:34:34 +00:00
Daira Hopwood
acf7cabe39
More PDF niceties.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 21:45:11 +00:00
Daira Hopwood
5e14841dce
Make hyperref links go to the top of the page to avoid having to scroll up.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 21:28:15 +00:00
Daira Hopwood
9069509095
Generate PDF index.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 21:12:38 +00:00
Daira Hopwood
c8e8846a53
More cosmetics.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 21:05:06 +00:00
Daira Hopwood
06e747ed1f
Suppress spurious overfull hbox warnings; other cosmetics.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 21:02:46 +00:00
Daira Hopwood
96f8c869f2
Fancy linking of cross-references and URLs.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 20:20:11 +00:00
Daira Hopwood
63b7fa7f1a
Move the specification of how a coin plaintext is encoded.
...
This avoids the implication that we intend it to be Base85Check-encoded,
and makes the statement about prefix-freedom true again.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 18:37:40 +00:00
Daira Hopwood
661e894907
Remove version byte in coin plaintext.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-05 18:19:33 +00:00
Daira Hopwood
b6f8ab3f9b
Formatting; fix key derivation diagram.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-03 18:51:33 +00:00
Daira Hopwood
70dede1507
Unified spec with or without viewing keys.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-03 18:43:10 +00:00
Daira Hopwood
605d6ef5b1
Cosmetics.
2016-03-03 15:25:25 +00:00
Daira Hopwood
d3b2bfe5fb
Improve presentation of decryption by viewing key holder; define \bot.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-03 14:01:39 +00:00
Daira Hopwood
e634b9ceb1
Viewing key optimizations.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-02 16:09:52 +00:00
Daira Hopwood
d3b0cfd649
Correct confusion between N^new and N^old in decryption by a viewing key holder,
...
and add a clarification about a viewing key holder acting as a recipient.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-02 15:29:37 +00:00
Daira Hopwood
9ba83513bb
Fix length of r.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-03-02 00:15:43 +00:00
Daira Hopwood
f5ab4ef51d
Ensure that a viewing key holder can decrypt the value of the old coin.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-29 14:19:35 +00:00
Daira Hopwood
80dcdeef4f
"additional data" -> "associated data".
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-28 11:25:41 +00:00
Daira Hopwood
d7dd20d281
Wording improvement.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 23:40:01 +00:00
Daira Hopwood
65ebefd7e8
Merge "Raw Encoding" subsubsections into their parent, and correct a section title.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 23:39:12 +00:00
Daira Hopwood
f3041d4e07
The viewing key holder should check epk.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 21:14:39 +00:00
Daira Hopwood
c6ec1e0e07
Note about some fields not being constrained in the circuit.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 20:58:39 +00:00
Daira Hopwood
a816d1fd18
Correct an obsolete paragraph relating a_sk and a_pk.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 20:38:58 +00:00
Daira Hopwood
0770ff87dc
Acknowledgements.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-27 00:54:33 +00:00
Daira Hopwood
a2d625f1b2
Merge branch '738.fix-internalh-collision.0' into 406.viewing-keys.1
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Includes other fixes.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 17:22:59 +00:00
Daira Hopwood
ce18d51650
Proposed fix for domain separation and truncation.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 16:36:59 +00:00
Daira Hopwood
e7ad03ac52
The nonce input to the AEAD isn't long enough, so derive K^disclose_i using a PRF instead.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 01:56:04 +00:00
Daira Hopwood
abb9da9937
Fix a long line.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 00:21:25 +00:00
Daira Hopwood
f0c24c113e
Merge branch '738.fix-internalh-collision.0' into 406.viewing-keys.1
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 00:17:19 +00:00
Daira Hopwood
e20d0dd437
Fix for InternalH collision attack.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-26 00:02:11 +00:00
Daira Hopwood
1d03b32575
Fix order of arguments to nonce in Pour statement.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-25 23:44:44 +00:00
Daira Hopwood
14e2428c66
Include security@z.cash address.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-25 23:41:47 +00:00
Daira Hopwood
e2d08d1073
Fix the definition of P^shared.
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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
2016-02-25 23:39:20 +00:00