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299 Commits

Author SHA1 Message Date
Ricardo Catalinas Jiménez 436fc8d76a all: Rename crypto.Sha3{,Hash}() to crypto.Keccak256{,Hash}() 
As we aren't really using the standarized SHA-3
 2016-02-21 22:34:34 +00:00
Jeffrey Wilcke 5b283663b4 core: Added new TD strategy which mitigate the risk for selfish mining 
Assuming the following scenario where a miner has 15% of all hashing
power and the ability to exert a moderate control over the network to
the point where if the attacker sees a message A, it can't stop A from
propagating, but what it **can** do is send a message B and ensure that
most nodes see B before A. The attacker can then selfish mine and
augment selfish mining strategy by giving his own blocks an advantage.

This change makes the time at which a block is received less relevant
and so the level of control an attacker has over the network no longer
makes a difference.

This change changes the current td algorithm `B_td > C_td` to the new
algorithm `B_td > C_td || B_td == C_td && rnd < 0.5`.
 2016-02-18 10:12:13 +01:00
Jeffrey Wilcke b6d88a0e9f core, core/vm, crypto: fixes for homestead 
* Removed some strange code that didn't apply state reverting properly
* Refactored code setting from vm & state transition to the executioner
* Updated tests
 2016-02-18 10:11:48 +01:00
Jeffrey Wilcke 4f4d2b6474 tests: updated homestead tests 2016-02-18 10:08:18 +01:00
Gustav Simonsson 371871d685 parmas, crypto, core, core/vm: homestead consensus protocol changes 
* change gas cost for contract creating txs
* invalidate signature with s value greater than secp256k1 N / 2
* OOG contract creation if not enough gas to store code
* new difficulty adjustment algorithm
* new DELEGATECALL op code
 2016-02-18 10:08:11 +01:00
Péter Szilágyi 1e806c4c77 cmd, common, core, eth, node, rpc, tests, whisper, xeth: use protocol stacks 2015-11-27 11:06:12 +02:00
Gustav Simonsson 220b0bf6e5 Update common test files 2015-11-20 12:53:36 +01:00
Péter Szilágyi 9dc5de51a2 tests: fix data race in bad-block-report disabling during tests 2015-11-05 13:29:50 +02:00
Drake Burroughs 05ea8926c3 cmd/utils, crypto: add --lightkdf flag for lighter KDF 2015-10-28 18:46:39 +01:00
Gustav Simonsson 145366c07e tests: update JSON files, add new wrappers 2015-10-23 14:25:18 +02:00
Jeffrey Wilcke 80f26086ee core, tests: get_hash fix 
Make sure that we're fetching the hash from the current chain and not
the canonical chain.
 2015-10-21 02:31:46 +02:00
Felix Lange de8d5aaa92 core, core/state: move gas tracking out of core/state 
The amount of gas available for tx execution was tracked in the
StateObject representing the coinbase account. This commit makes the gas
counter a separate type in package core, which avoids unintended
consequences of intertwining the counter with state logic.
 2015-10-17 10:24:34 +02:00
Gustav Simonsson 1b1f293082 core/state, core, miner: handle missing root error from state.New 2015-10-16 02:22:06 +02:00
Gustav Simonsson e1616f77c7 core, core/vm, cmd/evm: remove redundant balance check 2015-10-06 12:42:34 +02:00
Jeffrey Wilcke 7c7692933c cmd/geth, cmd/utils, core, rpc: renamed to blockchain 
* Renamed ChainManager to BlockChain
* Checkpointing is no longer required and never really properly worked
when the state was corrupted.
 2015-10-04 01:13:56 +02:00
Jeffrey Wilcke 361082ec4b cmd/evm, core/vm, test: refactored VM and core 
* Moved `vm.Transfer` to `core` package and changed execution to call
`env.Transfer` instead of `core.Transfer` directly.
* core/vm: byte code VM moved to jump table instead of switch
* Moved `vm.Transfer` to `core` package and changed execution to call
  `env.Transfer` instead of `core.Transfer` directly.
* Byte code VM now shares the same code as the JITVM
* Renamed Context to Contract
* Changed initialiser of state transition & unexported methods
* Removed the Execution object and refactor `Call`, `CallCode` &
  `Create` in to their own functions instead of being methods.
* Removed the hard dep on the state for the VM. The VM now
  depends on a Database interface returned by the environment. In the
  process the core now depends less on the statedb by usage of the env
* Moved `Log` from package `core/state` to package `core/vm`.
 2015-10-04 01:13:54 +02:00
Jeffrey Wilcke 49ae538506 Merge pull request #1405 from fjl/lean-trie 
core, trie: new trie
 2015-10-01 04:34:38 -07:00
Felix Lange a2d5a60418 core, core/state: batch-based state sync 2015-09-22 22:57:37 +02:00
Gustav Simonsson 5621308949 tests: add test for StateTests/stCallCodes.json 2015-09-21 11:34:02 +02:00
Gustav Simonsson 47ca6904b3 tests: use lastblockhash field to validate reorgs and block headers 2015-09-18 17:48:31 +02:00
Gustav Simonsson 075815e5ff tests: update common test wrappers and test files 2015-09-18 13:08:36 +02:00
Felix Lange 8c4dab77ba all: move common.Database to package ethdb 2015-09-14 23:36:30 +02:00
Péter Szilágyi cdc2662c40 core: split out TD from database and all internals 2015-09-11 17:42:25 +03:00
Gustav Simonsson fe8093b71f Add TestBcForkUncleTests and update JSON files 2015-08-31 16:45:00 +02:00
Gustav Simonsson 7324176f70 Add tests for uncle timestamps and refactor timestamp type 2015-08-25 04:46:11 +02:00
Jeffrey Wilcke 36f7fe61c3 core, tests: Double SUICIDE fix 2015-08-20 18:22:50 +02:00
Jeffrey Wilcke 9cacec70f9 cmd/evm, core/vm, tests: changed DisableVm to EnableVm 2015-08-11 18:43:22 +02:00
Jeffrey Wilcke 2fcf7f1241 Merge pull request #1604 from obscuren/db-merge 
core, eth, trie, xeth: merged state, chain, extra databases in one
 2015-08-09 05:16:37 -07:00
Jeffrey Wilcke a23478c0be core, eth, trie, xeth: merged state, chain, extra databases in one 2015-08-07 22:29:02 +02:00
Jeffrey Wilcke ac697326a6 core/vm: reduced big int allocations 
Reduced big int allocation by making stack items modifiable. Instead of
adding items such as `common.Big0` to the stack, `new(big.Int)` is
added instead. One must expect that any item that is added to the stack
might change.
 2015-08-07 12:52:23 +02:00
Jeffrey Wilcke 184e9ae9a8 core, tests: reduced state copy by N calls 
Reduced the amount of state copied that are required by N calls by doing
a balance check prior to any state modifications.
 2015-08-07 12:52:23 +02:00
Jeffrey Wilcke 846f34f78b core/vm, tests: implemented semi-jit vm 
* changed stack and removed stack ptr. Let go decide on slice reuse.
 2015-08-07 12:52:17 +02:00
Jeffrey Wilcke 71d32f54f7 core, miner: added difficulty bomb 2015-08-05 13:09:09 +02:00
Jeffrey Wilcke 03c39d4fc0 tests: updated 2015-07-29 15:01:42 +02:00
Jeffrey Wilcke 1fad8798ec Merge pull request #1515 from fjl/license-fixes 
all: fix license headers one more time
 2015-07-28 04:29:42 -07:00
Jeffrey Wilcke 9afda6ab8c core: 5 ether block reward 2015-07-25 17:47:20 +02:00
Felix Lange bfbcfbe4a9 all: fix license headers one more time 
I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
 2015-07-23 18:35:11 +02:00
Felix Lange 3f047be5aa all: update license headers to distiguish GPL/LGPL 
All code outside of cmd/ is licensed as LGPL. The headers
now reflect this by calling the whole work "the go-ethereum library".
 2015-07-22 18:51:45 +02:00
Felix Lange 593b1b65e7 tests: document RLP tests 2015-07-17 15:42:23 +02:00
Felix Lange 5da82077d1 cmd/ethtest, tests: add support for RLP JSON tests 2015-07-17 15:13:24 +02:00
Jeffrey Wilcke a32c51effd cmd, core, eth, common: genesis preparation 
Implemented the --genesis flag thru which we can set a custom genesis
block, including the official Ethereum genesis block.
 2015-07-10 17:37:41 +02:00
Gustav Simonsson b08abe64e4 Unskip SimpleTx3, check err in pre/post state validations 2015-07-08 13:09:22 +02:00
Gustav Simonsson 0b53a5c673 Update Ethereum JSON test files and wrappers 2015-07-08 13:08:42 +02:00
Felix Lange bdae4fd573 all: add some godoc synopsis comments 2015-07-07 14:12:45 +02:00
Felix Lange ea54283b30 all: update license information 2015-07-07 14:12:44 +02:00
Jeffrey Wilcke 35cd355c14 cmd,eth,rpc,tests: default coinbase 2015-07-07 10:32:05 +02:00
Gustav Simonsson b7e8d954ef Add TestBcGasPricer, comments and unskip tests 2015-07-06 13:56:56 +02:00
Jeffrey Wilcke aa4502060b Merge pull request #1400 from obscuren/badblock-reporting 
core, miner, tests: added test, implemented bad block reporting
 2015-07-06 02:03:50 -07:00
Jeffrey Wilcke bcc1660abc core, miner, tests: added test, implemented bad block reporting 2015-07-05 15:14:31 +02:00
Gustav Simonsson 0f04af5916 Fix core error forwarding, unify OOG VM err 2015-07-04 09:27:42 +02:00