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The basic approach it to delegate all sensitive data (master key, secret
ephemeral key, key derivation, ....) and related operations to the device.
As device has low memory, it does not keep itself the values
(except for view/spend keys) but once computed there are encrypted (with AES
are equivalent) and return back to monero-wallet-cli. When they need to be
manipulated by the device, they are decrypted on receive.
Moreover, using the client for storing the value in encrypted form limits
the modification in the client code. Those values are transfered from one
C-structure to another one as previously.
The code modification has been done with the wishes to be open to any
other hardware wallet. To achieve that a C++ class hw::Device has been
introduced. Two initial implementations are provided: the "default", which
remaps all calls to initial Monero code, and the "Ledger", which delegates
all calls to Ledger device.
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df5273de wallet2: fix auto_low_priority field name typo on load (moneromooo-monero)
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89ad162a wallet2: remove unused m_subaddresses_inv (moneromooo-monero)
f2c4c399 wallet2: speed up subaddress generation (by about a third) (moneromooo-monero)
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3c33e131 wallet2: don't store invalid key image when watch-only (stoffu)
0133b348 wallet2: don't throw when spent amount is inconsistent (stoffu)
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6866ed46 Add default value to max_height, otherwise it's 0 (Michał Sałaban)
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214d251c wallet: suggest the use of sweep_unmixable when not_enough_outs_to_mix is thrown (stoffu)
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a99ef176 wallet-rpc: take subaddress account as arg for get_transfer_by_txid (stoffu)
77125096 wallet-rpc: rename *_INDEX_OUTOFBOUND into *_INDEX_OUT_OF_BOUNDS (stoffu)
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f90c76be Return appropriate error code when there's no connection to daemon (Michał Sałaban)
3cb65b3f Return appropriate error code when not enough money for tx (Michał Sałaban)
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3be98036 wallet-cli: Do not ask for scan_from_height if it explicitly is set to zero. (Maximilian Lupke)
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a85dbb3f Fixed typos and wording tweaks (Maxithi)
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and set v7 height to 1057027 on testnet (one block earlier)
This is to easily dump current nodes since we're going to change
the v7 rules with this.
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not full)
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269ba252 wallet2::import_blockchain fix import loop (Jaquee)
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a9cae0ab Wallet API: remove unused enum Priority from UnsignedTransaction (stoffu)
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3160a930 wallet2: remove {set|get}_default_decimal_point and use the same funcs under cryptonote:: instead (stoffu)
7d1088d3 wallet2: make scan_output const and omit keys arg (stoffu)
bc1ee2c2 wallet2: make member functions const when possible (stoffu)
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6fbb0b06 cmake: set API header install path to what Qt wallet expects (redfish)
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ca336c62 simplewallet: check file overwrite when exporting stuff (stoffu)
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fb5c971c Allow retrieving spend key via RPC (Michał Sałaban)
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ffc2e570 wallet rpc: show fees when querying incoming transfers (stoffu)
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939629e8 Wallet API: all recover options with password (m2049r)
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cryptonote:: instead
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5ae617d5 simplewallet: single out 0 amount destinations as dummy ones (moneromooo-monero)
c1d19f3c wallet2: fix sweep_all sending an atomic unit (moneromooo-monero)
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d188840c Improved terminology from create to generate (Maxithi)
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3e635a3c wallet2: allow failing parse_tx_extra (moneromooo-monero)
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fa5c0bab Implement #3045, fixing RPC snakecases (Nick Johnson)
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eb39a3d7 wallet_api: make this optional but not built by default (moneromooo-monero)
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a4b006f9 wallet2 bugfix: initialize subaddress table when generating from keys (stoffu)
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6d40a920 Reserve proof (stoffu)
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07da9c80 Resolve addresses in get_transfers (Michał Sałaban)
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Fixes #3080
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also renamed memo => mnemonic in api method parms
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dc6729a6 wallet2: std::unordered_set ctor is sometimes explicit (moneromooo-monero)
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9996d5e9 wallet2: guard against the dameon sending blocks before last checkpoint (moneromooo-monero)
eadaa6aa wallet_rpc_server: fix wallet leak on error exit (moneromooo-monero)
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2d17feb0 factor STL container serialization (moneromooo-monero)
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66eeeaa1 wallet2: fix failure to create tx if inputs are not enough for fee (moneromooo-monero)
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6d8b29ef fix some link errors in debug mode for macos (stoffu)
fdd4c5e5 move memwipe to epee to avoid common<->crypto circular dependencies (moneromooo-monero)
40ab12a7 epee: remove dependency on common (moneromooo-monero)
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6fc4fc85 sweep_below: do not prematurely exclude subaddresses set (stoffu)
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277a5aef wallet2: fix m_key_image_{partial,known} in_light_wallet code (moneromooo-monero)
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It can fail if it fails to parse extra, while still having filled
the returned data with partial contents
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55556fab wallet_rpc_server: factor transfer info return and add missing info (moneromooo-monero)
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14c29814 wallet2: fix use of uninitialized data (moneromooo-monero)
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5cbcf0aa wallet: support for multisig seeds (moneromooo-monero)
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It means it can still be built with make -C build/debug wallet_api
but still not DoS us while debugging
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d0d38dc8 wallet2: print tx size in bytes and kB (moneromooo-monero)
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7e7b1a82 Revert "return subaddress in get_bulk_payments" (moneromooo-monero)
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This reverts commit b60f48f0e31c17638f771042887b2fffdbad15b4.
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5ad312a1 wallet2: switch to chacha20 instead of chacha8 (moneromooo-monero)
1e5491e9 Add a chacha20 variant to go with chacha8 (moneromooo-monero)
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aaae94f0 wallet2: reinstate the single preferred output selection (moneromooo-monero)
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Wallet caches and keys files are loaded with chacha8 as needed,
but only saved with chacha20. Other data (eg, cold wallet data
files, etc) will be incompatible.
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04349492 wallet2: error out in get_seed if the language is invalid (moneromooo-monero)
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6b5bd129 Account tagging (stoffu)
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bd5cce07 network_throttle: fix ineffective locking (moneromooo-monero)
e0a61299 network_throttle: remove unused xxx static member (moneromooo-monero)
24f584d9 cryptonote_core: remove unused functions with off by one bugs (moneromooo-monero)
b1634aa3 blockchain: don't leave dangling pointers in this (moneromooo-monero)
8e60b81c cryptonote_core: fix db leak on error (moneromooo-monero)
213e326c abstract_tcp_server2: log init_server errors as fatal (moneromooo-monero)
b51dc566 use const refs in for loops for non tiny types (moneromooo-monero)
f0568ca6 net_parse_helpers: fix regex error checking (moneromooo-monero)
b49ddc76 check accessing an element past the end of a container (moneromooo-monero)
2305bf26 check return value for generate_key_derivation and derive_public_key (moneromooo-monero)
a4240d9f catch const exceptions (moneromooo-monero)
45a1c4c0 add empty container sanity checks when using front() and back() (moneromooo-monero)
56fa6ce1 tests: fix a buffer overread in a unit test (moneromooo-monero)
b4524892 rpc: guard against json parsing a non object (moneromooo-monero)
c2ed8618 easylogging++: avoid buffer underflow (moneromooo-monero)
187a6ab2 epee: trap failure to parse URI from request (moneromooo-monero)
061789b5 checkpoints: trap failure to load JSON checkpoints (moneromooo-monero)
ba2fefb9 checkpoints: pass std::string by const ref, not const value (moneromooo-monero)
38c8f4e0 mlog: terminate a string at last char, just in case (moneromooo-monero)
d753d716 fix a few leaks by throwing objects, not newed pointers to objects (moneromooo-monero)
fe568db8 p2p: use size_t for arbitrary counters instead of uint8_t (moneromooo-monero)
46d6fa35 cryptonote_protocol: sanity check chain hashes from peer (moneromooo-monero)
25584f86 cryptonote_protocol: print peer versions when unexpected (moneromooo-monero)
490a5d41 rpc: do not try to use an invalid txid in relay_tx (moneromooo-monero)
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a9217641 wallet-rpc: added receiving address to res of get(_bulk)_payments; selective addresses for getaddress (stoffu)
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1741fb5f node_rpc_proxy: remove unused local and time call (moneromooo-monero)
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b60f48f0 return subaddress in get_bulk_payments (Dmitriy Plekhanov)
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3f24e901 wallet2: don't write a .new file when not needed (moneromooo-monero)
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ca18ff64 wallet2: detect spends in txes without a valid public tx key (moneromooo-monero)
6afcd8e3 cn_deserialize: print tx extra fields in partly decoded tx extra (moneromooo-monero)
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Makes it easier to debug leaks
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They are hex rather than words, because they are a lot longer
than "normal" seeds, as they have to embed a lot more information
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Additional tx keys, amounts and fees were missing in some cases
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addresses for getaddress
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While there, move the wallet2 ctor to the cpp file as it's a huge
amount of init list now, and remove an unused one.
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Thanks to kenshi84 for help getting this work
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Useful to speed tests up and avoid unnecessary leftover files
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Scheme by luigi1111:
Multisig for RingCT on Monero
2 of 2
User A (coordinator):
Spendkey b,B
Viewkey a,A (shared)
User B:
Spendkey c,C
Viewkey a,A (shared)
Public Address: C+B, A
Both have their own watch only wallet via C+B, a
A will coordinate spending process (though B could easily as well, coordinator is more needed for more participants)
A and B watch for incoming outputs
B creates "half" key images for discovered output D:
I2_D = (Hs(aR)+c) * Hp(D)
B also creates 1.5 random keypairs (one scalar and 2 pubkeys; one on base G and one on base Hp(D)) for each output, storing the scalar(k) (linked to D),
and sending the pubkeys with I2_D.
A also creates "half" key images:
I1_D = (Hs(aR)+b) * Hp(D)
Then I_D = I1_D + I2_D
Having I_D allows A to check spent status of course, but more importantly allows A to actually build a transaction prefix (and thus transaction).
A builds the transaction until most of the way through MLSAG_Gen, adding the 2 pubkeys (per input) provided with I2_D
to his own generated ones where they are needed (secret row L, R).
At this point, A has a mostly completed transaction (but with an invalid/incomplete signature). A sends over the tx and includes r,
which allows B (with the recipient's address) to verify the destination and amount (by reconstructing the stealth address and decoding ecdhInfo).
B then finishes the signature by computing ss[secret_index][0] = ss[secret_index][0] + k - cc[secret_index]*c (secret indices need to be passed as well).
B can then broadcast the tx, or send it back to A for broadcasting. Once B has completed the signing (and verified the tx to be valid), he can add the full I_D
to his cache, allowing him to verify spent status as well.
NOTE:
A and B *must* present key A and B to each other with a valid signature proving they know a and b respectively.
Otherwise, trickery like the following becomes possible:
A creates viewkey a,A, spendkey b,B, and sends a,A,B to B.
B creates a fake key C = zG - B. B sends C back to A.
The combined spendkey C+B then equals zG, allowing B to spend funds at any time!
The signature fixes this, because B does not know a c corresponding to C (and thus can't produce a signature).
2 of 3
User A (coordinator)
Shared viewkey a,A
"spendkey" j,J
User B
"spendkey" k,K
User C
"spendkey" m,M
A collects K and M from B and C
B collects J and M from A and C
C collects J and K from A and B
A computes N = nG, n = Hs(jK)
A computes O = oG, o = Hs(jM)
B anc C compute P = pG, p = Hs(kM) || Hs(mK)
B and C can also compute N and O respectively if they wish to be able to coordinate
Address: N+O+P, A
The rest follows as above. The coordinator possesses 2 of 3 needed keys; he can get the other
needed part of the signature/key images from either of the other two.
Alternatively, if secure communication exists between parties:
A gives j to B
B gives k to C
C gives m to A
Address: J+K+M, A
3 of 3
Identical to 2 of 2, except the coordinator must collect the key images from both of the others.
The transaction must also be passed an additional hop: A -> B -> C (or A -> C -> B), who can then broadcast it
or send it back to A.
N-1 of N
Generally the same as 2 of 3, except participants need to be arranged in a ring to pass their keys around
(using either the secure or insecure method).
For example (ignoring viewkey so letters line up):
[4 of 5]
User: spendkey
A: a
B: b
C: c
D: d
E: e
a -> B, b -> C, c -> D, d -> E, e -> A
Order of signing does not matter, it just must reach n-1 users. A "remaining keys" list must be passed around with
the transaction so the signers know if they should use 1 or both keys.
Collecting key image parts becomes a little messy, but basically every wallet sends over both of their parts with a tag for each.
Thia way the coordinating wallet can keep track of which images have been added and which wallet they come from. Reasoning:
1. The key images must be added only once (coordinator will get key images for key a from both A and B, he must add only one to get the proper key actual key image)
2. The coordinator must keep track of which helper pubkeys came from which wallet (discussed in 2 of 2 section). The coordinator
must choose only one set to use, then include his choice in the "remaining keys" list so the other wallets know which of their keys to use.
You can generalize it further to N-2 of N or even M of N, but I'm not sure there's legitimate demand to justify the complexity. It might
also be straightforward enough to support with minimal changes from N-1 format.
You basically just give each user additional keys for each additional "-1" you desire. N-2 would be 3 keys per user, N-3 4 keys, etc.
The process is somewhat cumbersome:
To create a N/N multisig wallet:
- each participant creates a normal wallet
- each participant runs "prepare_multisig", and sends the resulting string to every other participant
- each participant runs "make_multisig N A B C D...", with N being the threshold and A B C D... being the strings received from other participants (the threshold must currently equal N)
As txes are received, participants' wallets will need to synchronize so that those new outputs may be spent:
- each participant runs "export_multisig FILENAME", and sends the FILENAME file to every other participant
- each participant runs "import_multisig A B C D...", with A B C D... being the filenames received from other participants
Then, a transaction may be initiated:
- one of the participants runs "transfer ADDRESS AMOUNT"
- this partly signed transaction will be written to the "multisig_monero_tx" file
- the initiator sends this file to another participant
- that other participant runs "sign_multisig multisig_monero_tx"
- the resulting transaction is written to the "multisig_monero_tx" file again
- if the threshold was not reached, the file must be sent to another participant, until enough have signed
- the last participant to sign runs "submit_multisig multisig_monero_tx" to relay the transaction to the Monero network
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Scheme by luigi1111
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7193b89f Scrub keys from memory just before scope end. (moneromooo-monero)
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43f5269f Wallets now do not depend on the daemon rpc lib (moneromooo-monero)
bb89ae8b move connection_basic and network_throttle from src/p2p to epee (moneromooo-monero)
4abf25f3 cryptonote_core does not depend on p2p anymore (moneromooo-monero)
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The shared RPC code is now moved off into a separate lib
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Partially implements #74.
Securely erases keys from memory after they are no longer needed. Might have a
performance impact, which I haven't measured (perf measurements aren't
generally reliable on laptops).
Thanks to @stoffu for the suggestion to specialize the pod_to_hex/hex_to_pod
functions. Using overloads + SFINAE instead generalizes it so other types can
be marked as scrubbed without adding more boilerplate.
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a1e3670b catch wallet decrypt false positive (Riccardo Spagni)
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3dffe71b new wipeable_string class to replace std::string passphrases (moneromooo-monero)
7a2a5741 utils: initialize easylogging++ in on_startup (moneromooo-monero)
54950829 use memwipe in a few relevant places (moneromooo-monero)
000666ff add a memwipe function (moneromooo-monero)
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Helpful now that tx sizes are smaller
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Removing it nullified the min-outputs-{count,value} system,
and will not increase the number of attempted transactions
in the general case.
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b0426d4c Fixes #759 Add sanity check on restore height (Cifrado)
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d875a9ff wallet2: detect multiple outputs from a tx to different subaddresses (moneromooo-monero)
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6cbe7bcd wallet2: check generate_key_derivation return value (moneromooo-monero)
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51895fd7 split wallet and wallet_api (moneromooo-monero)
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0d149f70 Add out-of-bound exceptions and handle them in RPC (Michał Sałaban)
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61712384 daemon & simplewallet: don't set max-concurrency when unspecified (stoffu)
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da706b61 Fix false GCC warning '‘*((void*)& subaddr_account +4)’ may be used unitialized' (binaryFate)
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0b726be7 wallet2: minimize the number of construct_tx calls (moneromooo-monero)
9d505d26 wallet2: cleanup some debug logs (moneromooo-monero)
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7e387fb1 wallet2: only add a dummy 0 output if there's one output otherwise (moneromooo-monero)
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b0b7e0f0 Spend proof without txkey (stoffu)
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9739da1e wallet_rpc_server: new relay_tx command (moneromooo-monero)
01dc8297 wallet: transfer RPC can now return tx metadata (pending_tx) (moneromooo-monero)
83fa9047 serialization: add std::set and std::unordered_set serialization (moneromooo-monero)
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It takes a full tx+metadata hex string as input
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ef941855 Wallet RPC: Add prompt-for-password flag (Tim L)
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- refactoring: proof generation/checking code was moved from simplewallet.cpp to wallet2.cpp
- allow an arbitrary message to be signed together with txid
- introduce two types (outbound & inbound) of tx proofs; with the same syntax, inbound is selected when <address> belongs to this wallet, outbound otherwise. see GitHub thread for more discussion
- wallet RPC: added get_tx_key, check_tx_key, get_tx_proof, check_tx_proof
- wallet API: moved WalletManagerImpl::checkPayment to Wallet::checkTxKey, added Wallet::getTxProof/checkTxProof
- get_tx_key/check_tx_key: handle additional tx keys by concatenating them into a single string
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This speeds up building a lot when wallet2.h (or something it
includes) changes, since all the API includes wallet2.h
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ffe5b857 Correct totals computation (Michał Sałaban)
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5d92c7cc wallet2: typo fix in error message (moneromooo-monero)
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b738f4b5 wallet: add sweep_single command (stoffu)
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7cb303a4 wallet2: simplify incoming tx processing code (moneromooo-monero)
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Missing an error argument for an exception
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99f398a2 wallet2: avoid growing the short history when refreshing in a loop (moneromooo-monero)
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0d9c0db9 Do not build against epee_readline if it was not built (Howard Chu)
178014c9 split off readline code into epee_readline (moneromooo-monero)
a9e14a19 link against readline only for monerod and wallet-wallet-{rpc,cli} (moneromooo-monero)
437421ce wallet: move some scoped_message_writer calls from the libs (moneromooo-monero)
e89994e9 wallet: rejig to avoid prompting in wallet2 (moneromooo-monero)
ec5135e5 move input_line from command_line to simplewallet (moneromooo-monero)
082db75f move cryptonote command line options to cryptonote_core (moneromooo-monero)
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383ff4f6 remove "using namespace std" from headers (moneromooo-monero)
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wallet2 is a library, and should not prompt for stdin. Instead,
pass a function so simplewallet can prompt on stdin, and a GUI
might display a window, etc.
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It's nasty, and actually breaks on Solaris, where if.h fails to
build due to:
struct map *if_memmap;
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0bf09154 Fix file permission issue (Tim L)
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d70515fc Used declared default refresh status as default rather than it's current value (Maxime THIEBAUT)
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6cf33446 Remove wallet dependency on p2p (moneromooo-monero)
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9d6c6c5d wallet2: do not bother downloading block hashes below last checkpoint (moneromooo-monero)
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2677ade5 simplewallet: forbid 0 ring size (moneromooo-monero)
da8b60cb simplewallet: reject attempts to use too low mixin early (moneromooo-monero)
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867b67c4 Wallet API: override update subdir when built from src (Jaquee)
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d269bff2 wallet2: use a vector, not a list, for selected_transfers (moneromooo-monero)
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This yields a clear error message rather then some possibly
confusing more technical errors down the line
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ac4018a7 wallet2: workaround for lightwallet before supporting subaddress (followup #2656) (kenshi84)
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ad96c478 wallet-cli: added --generate-from-spend-key option (stoffu)
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ccf53a56 track double spending in the txpool (moneromooo-monero)
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unitialized'
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Friendlier on memory/speed, we know in advance the max amount
of items, which are small and constant size, and there's a lot
of list walking involved.
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