Commit Graph

6920 Commits

Author SHA1 Message Date
moneromooo-monero
f4eda44ce3
N-1/N multisig 2017-12-17 16:12:12 +00:00
moneromooo-monero
cd64c7990c
multisig address generation RPC 2017-12-17 16:12:09 +00:00
moneromooo-monero
fff871a455
gen_multisig: generates multisig wallets if participants trust each other 2017-12-17 16:12:06 +00:00
moneromooo-monero
95a21a793d
wallet2: allow empty wallet filename to avoid saving data
Useful to speed tests up and avoid unnecessary leftover files
2017-12-17 16:12:03 +00:00
moneromooo-monero
b84b3565f3
tests: add multisig unit tests 2017-12-17 16:12:00 +00:00
moneromooo-monero
4c313324b1
Add N/N multisig tx generation and signing
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
2017-12-17 16:11:57 +00:00
moneromooo-monero
6d219a9250
wallet: add multisig key generation
Scheme by luigi1111
2017-12-17 16:11:53 +00:00
moneromooo-monero
1a686bf8cc
daemon: print num txes in print_bc 2017-12-17 12:55:40 +00:00
Riccardo Spagni
a3a8343051
Merge pull request #2857
7193b89f Scrub keys from memory just before scope end. (moneromooo-monero)
2017-12-17 13:00:11 +02:00
Riccardo Spagni
066fd7aced
Merge pull request #2877
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)
2017-12-17 12:59:44 +02:00
Riccardo Spagni
b806d9844e
Merge pull request #2864
09ce03d6 move includes around to lessen overall load (moneromooo-monero)
2017-12-17 12:58:46 +02:00
moneromooo-monero
9e07ccf1f5
daemon: remove some superfluous includes 2017-12-17 10:28:39 +00:00
moneromooo-monero
223e3788ac
unit_tests: fix memwipe test comparison
free might overwrite the memory, so we can't expect to see
the NULs we overwrote with, but at least we shouldn't see
the original data.
2017-12-17 09:56:36 +00:00
moneromooo-monero
43f5269f84
Wallets now do not depend on the daemon rpc lib
The shared RPC code is now moved off into a separate lib
2017-12-16 23:28:59 +00:00
moneromooo-monero
bb89ae8b20
move connection_basic and network_throttle from src/p2p to epee
These even had the epee namespace.
This fixes some ugly circular dependencies.
2017-12-16 23:28:43 +00:00
moneromooo-monero
4abf25f3c9
cryptonote_core does not depend on p2p anymore
As a followon side effect, this makes a lot of inline code
included only in particular cpp files (and instanciated
when necessary.
2017-12-16 23:28:38 +00:00
moneromooo-monero
09ce03d612
move includes around to lessen overall load 2017-12-16 22:46:38 +00:00
moneromooo-monero
7193b89fe5 Scrub keys from memory just before scope end.
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.
2017-12-16 15:40:33 -07:00
Riccardo Spagni
38ecd0526e
Merge pull request #2881
41fc11fa Scheduled mandatory software upgrades (xmr-eric)
3b5382fe Keep VRP a proper noun (xmr-eric)
7160cbd6 CONTRIBUTING.md capitalization (xmr-eric)
f36ffc07 Shorten a title, remove a section, small edits (xmr-eric)
00179917 Capitalization on first word only (xmr-eric)
6ffae079 Readme.md: Normalize heading capitalization (xmr-eric)
2017-12-16 23:27:47 +02:00
Riccardo Spagni
8da24c2a57
Merge pull request #2878
abebe392 rpc: add offline state in info rpc (moneromooo-monero)
7696e849 core: make --offline also disable DNS lookups (moneromooo-monero)
2017-12-16 23:27:00 +02:00
Riccardo Spagni
ec63d64a67
Merge pull request #2874
25f4ab81 fixed linking against libreadline on OpenBSD (ston1th)
2017-12-16 23:26:13 +02:00
Riccardo Spagni
b88f0879b5
Merge pull request #2873
1c838552 Simplewallet.cpp: Fewer pleases in seed NOTE (xmr-eric)
3f18c642 Fix password capitalization mismatch (xmr-eric)
2017-12-16 23:25:43 +02:00
Riccardo Spagni
7998ffc26b
Merge pull request #2871
2b0a32f8 Small cleanup of daemon synchronization output (xmr-eric)
2017-12-16 23:25:02 +02:00
Riccardo Spagni
9b511d3e93
Merge pull request #2866
cf5f6236 Corrections in rate limiting / trottle code, especially in 'out' direction (rbrunner7)
2017-12-16 23:24:41 +02:00
Riccardo Spagni
87158dca68
Merge pull request #2885
a1e3670b catch wallet decrypt false positive (Riccardo Spagni)
2017-12-16 23:24:16 +02:00
Riccardo Spagni
6c0953b15a
Merge pull request #2860
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)
2017-12-16 23:19:27 +02:00
Riccardo Spagni
ce951ef560
Merge pull request #2856
009eed17 rpc: increase the max number of outs one can request (moneromooo-monero)
2017-12-16 23:15:43 +02:00
Riccardo Spagni
9045ff56fc
Merge pull request #2551
3af19c80 set_node command, allows setting node without restart (Tobias Hoffmann)
2017-12-16 23:12:44 +02:00
moneromooo-monero
d0d38dc8e6
wallet2: print tx size in bytes and kB
Helpful now that tx sizes are smaller
2017-12-16 18:40:21 +00:00
moneromooo-monero
aaae94f00b
wallet2: reinstate the single preferred output selection
Removing it nullified the min-outputs-{count,value} system,
and will not increase the number of attempted transactions
in the general case.
2017-12-16 12:31:03 +00:00
moneromooo-monero
cb9aa23cc5
levin_protocol_handler_async: another attempt at fixing at exception 2017-12-15 18:38:53 +00:00
Guillaume LE VAILLANT
db2bc96512 Embed the translation files in the binary
If a translation file exists in a "translations" directory located in
the same directory as the binary, it is used in priority (this can be
useful when working on translations as you don't have to recompile the
whole program all the time), and if no such file is found the embedded
translation file is used (if it exists).
2017-12-15 18:44:01 +01:00
vasi
67fe4b1b06 Add Guix SD to available distro packages in README.md 2017-12-15 15:00:04 +01:00
moneromooo-monero
64d23ce331
Revert "epee: keep a ref to a connection we're deleting"
This reverts commit f2939bdce8.
2017-12-15 13:23:21 +00:00
moneromooo-monero
043494924b
wallet2: error out in get_seed if the language is invalid 2017-12-15 11:01:14 +00:00
moneromooo-monero
7f4bb612fb
levin_protocol_handler_async: add missing response handler locking 2017-12-15 10:47:45 +00:00
moneromooo-monero
ae55bacd8c
resumption support for updates using range requests 2017-12-15 10:46:23 +00:00
moneromooo-monero
fe0fae5089
epee: add a get_file_size function 2017-12-15 10:32:36 +00:00
moneromooo-monero
d28c388f88
p2p: stop net server before closing starting connections
This fixes a hang on exit due to race where a connection adds
itself to the server after the starting connections are closed,
but before the net server marks itself as stopped.
2017-12-15 10:31:12 +00:00
Alexander Azarov
a7e2e1b07f fix: bind RPC to all interfaces inside Docker container
Binding RPC to 127.0.0.1 makes no sense. Despite the fact port 18081 is
exposed, no one will be able to connect to the daemon.

RPC should be listening at all interfaces when running inside a Docker
container.
2017-12-14 23:11:30 +02:00
moneromooo-monero
a1d44f2746
updates: use https for updates 2017-12-14 13:33:06 +00:00
moneromooo-monero
472a93c83a
download: SSL suport 2017-12-14 09:12:58 +00:00
moneromooo-monero
f5bc7f1855
simplewallet: fix default unspent_outputs output with subaddresses
If no subaddress index is given, consider all of them
2017-12-13 10:09:42 +00:00
Riccardo Spagni
319163d276
Merge pull request #2913
b927f0b1 cryptonote_protocol: fix corner case looping asking for same block hashes (moneromooo-monero)
2017-12-12 17:48:29 +02:00
MoroccanMalinois
37f9c6e651
Dockerfile: add option to set build parallelism 2017-12-11 23:33:08 +00:00
moneromooo-monero
dba2de61e7
levin_protocol_handler_async: call handler destroy function on dtor 2017-12-11 18:33:37 +00:00
Riccardo Spagni
f51bac990e
Merge pull request #2906
27aa8ce9 net_utils_base: fix peer list parsing (moneromooo-monero)
fe5ab2c4 epee: fix kv_unserialize return value when a field is not found (moneromooo-monero)
2017-12-10 13:08:23 +02:00
Riccardo Spagni
f270382718
Merge pull request #2900
5cc84693 easylogging: show the 'no stack trace' warning only once (ston1th)
2017-12-10 12:57:23 +02:00
moneromooo-monero
27aa8ce95b
net_utils_base: fix peer list parsing
Fields are written with their "name" as key, and that name changed.
2017-12-09 22:16:58 +00:00
Riccardo Spagni
0e7b29d62d
Merge pull request #2904
46eaaae7 ringct: always use outPk.mask to decode amounts (moneromooo-monero)
2017-12-09 20:14:41 +02:00