Commit Graph

209 Commits

Author SHA1 Message Date
Marius van der Wijden
55f30db0ae
core/vm, crypt/bls12381: fixed comments in bls (#21182)
* core/vm: crypto/bls12381: minor code comments

* crypto/bls12381: fix comment
2020-06-08 10:53:19 +03:00
kilic
4fc678542d
core/vm, crypto/bls12381, params: add bls12-381 elliptic curve precompiles (#21018)
* crypto: add bls12-381 elliptic curve wrapper

* params: add bls12-381 precompile gas parameters

* core/vm: add bls12-381 precompiles

* core/vm: add bls12-381 precompile tests

* go.mod, go.sum: use latest bls12381 lib

* core/vm: move point encode/decode functions to base library

* crypto/bls12381: introduce bls12-381 library init function

* crypto/bls12381: import bls12381 elliptic curve implementation

* go.mod, go.sum: remove bls12-381 library

* remove unsued frobenious coeffs

supress warning for inp that used in asm

* add mappings tests for zero inputs

fix swu g2 minus z inverse constant

* crypto/bls12381: fix typo

* crypto/bls12381: better comments for bls12381 constants

* crypto/bls12381: swu, use single conditional for e2

* crypto/bls12381: utils, delete empty line

* crypto/bls12381: utils, use FromHex for string to big

* crypto/bls12381: g1, g2, strict length check for FromBytes

* crypto/bls12381: field_element, comparision changes

* crypto/bls12381: change swu, isogeny constants with hex values

* core/vm: fix point multiplication comments

* core/vm: fix multiexp gas calculation and lookup for g1 and g2

* core/vm: simpler imput length check for multiexp and pairing precompiles

* core/vm: rm empty multiexp result declarations

* crypto/bls12381: remove modulus type definition

* crypto/bls12381: use proper init function

* crypto/bls12381: get rid of new lines at fatal desciprtions

* crypto/bls12-381: fix no-adx assembly multiplication

* crypto/bls12-381: remove old config function

* crypto/bls12381: update multiplication backend

this commit changes mul backend to 6limb eip1962 backend

mul assign operations are dropped

* core/vm/contracts_tests: externalize test vectors for precompiles

* core/vm/contracts_test: externalize failure-cases for precompiles

* core/vm: linting

* go.mod: tiny up sum file

* core/vm: fix goimports linter issues

* crypto/bls12381: build tags for plain ASM or ADX implementation

Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
2020-06-03 09:44:32 +03:00
Adam Schmideg
fe9ffa5953
crypto: improve error messages in LoadECDSA (#20718)
This improves error messages when the file is too short or too long.
Also rewrite the test for SaveECDSA because LoadECDSA has its own
test now.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-04-08 16:01:11 +02:00
Luke Champine
462ddce5b2
crypto/ecies: improve concatKDF (#20836)
This removes a bunch of weird code around the counter overflow check in
concatKDF and makes it actually work for different hash output sizes.

The overflow check worked as follows: concatKDF applies the hash function N
times, where N is roundup(kdLen, hashsize) / hashsize. N should not
overflow 32 bits because that would lead to a repetition in the KDF output.

A couple issues with the overflow check:

- It used the hash.BlockSize, which is wrong because the
  block size is about the input of the hash function. Luckily, all standard
  hash functions have a block size that's greater than the output size, so
  concatKDF didn't crash, it just generated too much key material.
- The check used big.Int to compare against 2^32-1.
- The calculation could still overflow before reaching the check.

The new code in concatKDF doesn't check for overflow. Instead, there is a
new check on ECIESParams which ensures that params.KeyLen is < 512. This
removes any possibility of overflow.

There are a couple of miscellaneous improvements bundled in with this
change:

- The key buffer is pre-allocated instead of appending the hash output
  to an initially empty slice.
- The code that uses concatKDF to derive keys is now shared between Encrypt
  and Decrypt.
- There was a redundant invocation of IsOnCurve in Decrypt. This is now removed
  because elliptic.Unmarshal already checks whether the input is a valid curve
  point since Go 1.5.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-04-03 11:57:24 +02:00
Adam Schmideg
f1a7997af3
crypto/bn256: fix import line (#20723) 2020-02-27 13:59:00 +02:00
Felix Lange
689486449d build: use golangci-lint (#20295)
* build: use golangci-lint

This changes build/ci.go to download and run golangci-lint instead
of gometalinter.

* core/state: fix unnecessary conversion

* p2p/simulations: fix lock copying (found by go vet)

* signer/core: fix unnecessary conversions

* crypto/ecies: remove unused function cmpPublic

* core/rawdb: remove unused function print

* core/state: remove unused function xTestFuzzCutter

* core/vm: disable TestWriteExpectedValues in a different way

* core/forkid: remove unused function checksum

* les: remove unused type proofsData

* cmd/utils: remove unused functions prefixedNames, prefixFor

* crypto/bn256: run goimports

* p2p/nat: fix goimports lint issue

* cmd/clef: avoid using unkeyed struct fields

* les: cancel context in testRequest

* rlp: delete unreachable code

* core: gofmt

* internal/build: simplify DownloadFile for Go 1.11 compatibility

* build: remove go test --short flag

* .travis.yml: disable build cache

* whisper/whisperv6: fix ineffectual assignment in TestWhisperIdentityManagement

* .golangci.yml: enable goconst and ineffassign linters

* build: print message when there are no lint issues

* internal/build: refactor download a bit
2019-11-18 10:49:17 +02:00
Felix Lange
39b0b1a1a6
all: make unit tests work with Go 1.13 (#20053)
Most of these changes are related to the Go 1.13 changes to test binary
flag handling. 

* cmd/geth: make attach tests more reliable

This makes the test wait for the endpoint to come up by polling
it instead of waiting for two seconds.

* tests: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.

* crypto/ecies: remove useless -dump flag in tests

* p2p/simulations: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.

* build: remove workaround for ./... vendor matching

This workaround was necessary for Go 1.8. The Go 1.9 release changed
the expansion rules to exclude vendored packages.

* Makefile: use relative path for GOBIN

This makes the "Run ./build/bin/..." line look nicer.

* les: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.
2019-09-11 14:41:22 +02:00
Felix Lange
54b271a86d
crypto: add SignatureLength constant and use it everywhere (#19996)
Original change by @jpeletier
2019-08-22 15:14:06 +02:00
Péter Szilágyi
8e391cec43
crypto/blake2b: fix 386, round 2 2019-08-22 12:24:11 +03:00
Péter Szilágyi
8517dd463d
crypto/blake2b: fix non-amd64 builds 2019-08-22 11:22:16 +03:00
Péter Szilágyi
1bccafe5ef
core/vm, crypto/blake2b: add SSE, AVX and AVX2 code 2019-08-21 13:09:15 +03:00
Piotr Dyraga
2890f060b7
core/vm, crypto/blake2b: add BLAKE2b compression func at 0x09
The precompile at 0x09 wraps the BLAKE2b F compression function:
https://tools.ietf.org/html/rfc7693#section-3.2

The precompile requires 6 inputs tightly encoded, taking exactly 213
bytes, as explained below.

- `rounds` - the number of rounds - 32-bit unsigned big-endian word
- `h` - the state vector - 8 unsigned 64-bit little-endian words
- `m` - the message block vector - 16 unsigned 64-bit little-endian words
- `t_0, t_1` - offset counters - 2 unsigned 64-bit little-endian words
- `f` - the final block indicator flag - 8-bit word

[4 bytes for rounds][64 bytes for h][128 bytes for m][8 bytes for t_0]
[8 bytes for t_1][1 byte for f]

The boolean `f` parameter is considered as `true` if set to `1`.
The boolean `f` parameter is considered as `false` if set to `0`.
All other values yield an invalid encoding of `f` error.

The precompile should compute the F function as specified in the RFC
(https://tools.ietf.org/html/rfc7693#section-3.2) and return the updated
state vector `h` with unchanged encoding (little-endian).

See EIP-152 for details.
2019-08-21 13:09:15 +03:00
Kitten King
cc3ef1e4f4 cmd, crypto, eth, internals: fix Typos (#19868) 2019-07-22 10:34:33 +03:00
Felix Lange
f088c650a5 all: replace t.Log(); t.FailNow() with t.Fatal() (#19849) 2019-07-18 15:21:24 +03:00
大彬
4ac04ae0fe all: replace fmt.Print* calls with t.Log* in tests (#19670) 2019-07-17 13:20:24 +02:00
Antoine Rondelet
2388e425f2 crypto/bn256/cloudflare: fix comments to describe the updated curve parameters (#19577)
* Removed comment section referring to Cloudflare's bn curve parameters

* Added comment to clarify the nature of the parameters

* Changed value of xi to i+9
2019-05-28 09:13:30 +03:00
Antoine Rondelet
9efc1a847e crypto/bn256/cloudflare: checks for nil pointers in Marshal functions (#19609)
* Added checks for nil pointers in Marshal functions

* Set nil pointer to identity in GT before marshaling
2019-05-26 00:57:07 +03:00
Péter Szilágyi
39bd2609ca
crypto/bn256/cloudflare: pull in upstream fix for Go 1.12 R18 2019-02-28 14:53:44 +02:00
Samuel Marks
e43bc36226
travis, appveyor, Dockerfile: upgrade to Go 1.12 2019-02-27 14:21:02 +02:00
Jeremy Schlatter
b5e5b3567c crypto: fix build when CGO_ENABLED=0 (#19121)
Package crypto works with or without cgo, which is great. However, to make it
work without cgo required setting the build tag `nocgo`. It's common to disable
cgo by instead just setting the environment variable `CGO_ENABLED=0`. Setting
this environment variable does _not_ implicitly set the build tag `nocgo`. So
projects that try to build the crypto package with `CGO_ENABLED=0` will fail. I
have done this myself several times. Until today, I had just assumed that this
meant that this package requires cgo.

But a small build tag change will make this case work. Instead of using `nocgo`
and `!nocgo`, we can use `!cgo` and `cgo`, respectively. The `cgo` build tag is
automatically set if cgo is enabled, and unset if it is disabled.
2019-02-19 12:18:37 +01:00
Matthew Halpern
2a0e1bb32b crypto/ecies: remove unused function (#19096) 2019-02-18 14:09:07 +02:00
Dave McGregor
33d233d3e1
vendor, crypto, swarm: switch over to upstream sha3 package 2019-01-04 09:26:07 +02:00
Shuai Qi
e57e4571d3 crypto/secp256k1: Fix invalid document link (#18297) 2018-12-13 10:25:13 +01:00
Martin Holst Swende
89a32451ae core/vm: faster create/create2 (#17806)
* core/vm/runtim: benchmark create/create2

* core/vm: do less hashing in CREATE2

* core/vm: avoid storing jumpdest analysis for initcode

* core/vm: avoid unneccesary lookups, remove unused fields

* core/vm: go formatting tests

* core/vm: save jumpdest analysis locally

* core/vm: use common.Hash instead of nil, fix review comments

* core/vm: removed type destinations

* core/vm: correct check for empty hash

* eth: more elegant api_tracer

* core/vm: address review concerns
2018-10-04 18:15:37 +03:00
Liang ZOU
6663e5da10 all: fix various comment typos (#17748) 2018-09-25 12:26:35 +02:00
Payne
1d9d3815e5 crypto/secp256k1: remove useless code (#17728)
`(void)data;` may cause link error on Windows.
2018-09-21 21:42:02 +02:00
Wenbiao Zheng
d1aa605f1e all: remove the duplicate 'the' in annotations (#17509) 2018-08-27 11:49:29 +03:00
Péter Szilágyi
a6d45a5d00
crypto/bn256: add missing license file, release wrapper in BSD-3 2018-08-20 18:05:06 +03:00
Péter Szilágyi
3e21adc648
crypto/bn256: fix issues caused by Go 1.11 2018-08-16 11:02:16 +03:00
gary rong
e0e0e53401 crypto: change formula for create2 (#17393) 2018-08-14 18:30:42 +03:00
Péter Szilágyi
d9575e92fc crypto/secp256k1: remove external LGPL dependencies (#17239) 2018-07-26 13:33:13 +02:00
gary rong
cab1cff11c core, crypto, params: implement CREATE2 evm instrction (#17196)
* core, crypto, params: implement CREATE2 evm instrction

* core/vm: add opcode to string mapping

* core: remove past fork checking

* core, crypto: use option2 to generate new address
2018-07-24 17:22:03 +03:00
Péter Szilágyi
afd8b84706 crypto/secp256k1: unify the package license to 3-Clause BSD (#17225)
Our original wrapper code had two parts. One taken from a third
party repository (who took it from upstream Go) licensed under
BSD-3. The second written by Jeff, Felix and Gustav, licensed
under LGPL. This made this package problematic to use from the
outside.

With the agreement of the original copyright holders, this commit
changes the license of the LGPL portions of the code to BSD-3:

---
I agree changing from LGPL to a BSD style license.

Jeff
---
Hey guys,

My preference would be to relicense to GNUBL, but I'm also OK with BSD.

Cheers,
Gustav
---
Felix Lange (fjl):
I would approve anything that makes our licensing less complicated
---
2018-07-24 02:47:47 +02:00
Felix Lange
0255951587 crypto: replace ToECDSAPub with error-checking func UnmarshalPubkey (#16932)
ToECDSAPub was unsafe because it returned a non-nil key with nil X, Y in
case of invalid input. This change replaces ToECDSAPub with
UnmarshalPubkey across the codebase.
2018-06-12 15:26:08 +02:00
kiel barry
ba975dc093 crypto: fix golint warnings (#16710) 2018-05-09 01:17:09 +02:00
thomasmodeneis
ba1030b6b8 build: enable goimports and varcheck linters (#16446) 2018-04-18 00:53:50 +02:00
David Huie
d1af4e1a9e crypto/secp256k1: catch curve parameter parse errors (#16392) 2018-04-03 17:12:00 +02:00
David Huie
23ac783332 ecies: drop randomness parameter from PrivateKey.Decrypt (#16374)
The parameter `rand` is unused in `PrivateKey.Decrypt`. Decryption in
the ECIES encryption scheme is deterministic, so randomness isn't
needed.
2018-03-26 13:46:18 +03:00
Péter Szilágyi
1203c6a237
crypto/bn256: full switchover to cloudflare's code (#16301)
* crypto/bn256: full switchover to cloudflare's code

* crypto/bn256: only use cloudflare for optimized architectures

* crypto/bn256: upstream fallback for non-optimized code

* .travis, build: drop support for Go 1.8 (need type aliases)

* crypto/bn256/cloudflare: enable curve mul lattice optimization
2018-03-20 01:13:54 +09:00
Péter Szilágyi
bd6879ac51
core/vm, crypto/bn256: switch over to cloudflare library (#16203)
* core/vm, crypto/bn256: switch over to cloudflare library

* crypto/bn256: unmarshal constraint + start pure go impl

* crypto/bn256: combo cloudflare and google lib

* travis: drop 386 test job
2018-03-05 14:33:45 +02:00
Furkan KAMACI
b8caba9709 various: remove redundant parentheses (#15793) 2018-01-03 14:14:47 +02:00
Alex Wu
6cd6b921ac crypto: ensure private keys are < N (#15745)
Fixes #15744
2018-01-02 10:55:03 +01:00
Felix Lange
ce823c9f84 crypto: ensure that VerifySignature rejects malleable signatures (#15708)
* crypto: ensure that VerifySignature rejects malleable signatures

It already rejected them when using libsecp256k1, make sure the nocgo
version does the same thing.

* crypto: simplify check

* crypto: fix build
2017-12-20 14:30:00 +02:00
Felix Lange
c6069a627c
crypto, crypto/secp256k1: add CompressPubkey (#15626)
This adds the inverse to DecompressPubkey and improves a few minor
details in crypto/secp256k1.
2017-12-15 10:40:09 +01:00
George Ornbo
7bb2a489b2
crypto: Fix comment typo 2017-12-14 21:55:18 +00:00
Felix Lange
1a32bdf92c
crypto: fix error check in toECDSA (#15632)
With this change,

    key, err := crypto.HexToECDSA("000000...")
    
returns nil key and an error instead of a non-nil key with nil X
and Y inside. Issue found by @guidovranken.
2017-12-11 22:49:09 +01:00
Felix Lange
e85b68ef53
crypto: add DecompressPubkey, VerifySignature (#15615)
We need those operations for p2p/enr.

Also upgrade github.com/btcsuite/btcd/btcec to the latest version
and improve BenchmarkSha3. The benchmark printed extra output 
that confused tools like benchstat and ignored N.
2017-12-06 16:07:08 +01:00
Matthew Di Ferrante
80c6dfc19f crypto/bn256: fix generator on G1 (#15591)
Generator in the current lib uses -2 as the y point when doing
ScalarBaseMult, this makes it so that points/signatures generated
from libs like py_ecc don't match/validate as pretty much all
other libs (including libsnark) have (1, 2) as the standard
generator.

This does not affect consensus as the generator is never used in
the VM, points are always explicitly defined and there is not
ScalarBaseMult op - it only makes it so that doing "import
github.com/ethereum/go-ethereum/crypto/bn256" doesn't generate
bad points in userland tools.
2017-12-01 13:03:39 +01:00
Péter Szilágyi
1335a6cc8c
core/vm, crypto/bn256: fix bn256 use and pairing corner case 2017-08-17 16:46:46 +03:00
Egon Elbre
10ce8b0e3c crypto: fix megacheck warnings (#14917)
* crypto: fix megacheck warnings

* crypto/ecies: remove ASN.1 support
2017-08-08 13:58:22 +03:00