Commit Graph

11 Commits

Author SHA1 Message Date
Jonathan Chappelow
830231c1c4
crypto: use btcec/v2 for no-cgo (#24533)
This updates the no-cgo implementations in the crypto package to use
the github.com/btcsuite/btcd/btcec/v2 module instead of the older btcec
package that was part of the main github.com/btcsuite/btcd module.

name                   old time/op  new time/op  delta
EcrecoverSignature-32   198µs ± 0%   144µs ± 0%  -27.11%
VerifySignature-32      177µs ± 0%   128µs ± 0%  -27.44%
DecompressPubkey-32    20.9µs ± 0%  10.1µs ± 0%  -51.51%

Use (*ModNScalar).IsOverHalfOrder instead of math/big.Int when checking
for malleable signatures.
2022-03-16 14:23:14 +01:00
Felix Lange
8a134014b4
all: add go:build lines (#23468)
Generated by go1.17 fmt ./...
2021-08-25 18:46:29 +02:00
Martin Holst Swende
bbbeb7d8ba
crypto: gofuzz build directives (#23137) 2021-06-30 23:04:28 +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
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
kiel barry
ba975dc093 crypto: fix golint warnings (#16710) 2018-05-09 01:17:09 +02:00
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
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
Felix Lange
0cc492f815 all: update license information 2017-04-14 10:29:00 +02:00
Felix Lange
9b0af51386 crypto: add btcec fallback for sign/recover without cgo (#3680)
* vendor: add github.com/btcsuite/btcd/btcec

* crypto: add btcec fallback for sign/recover without cgo

This commit adds a non-cgo fallback implementation of secp256k1
operations.

* crypto, core/vm: remove wrappers for sha256, ripemd160
2017-02-18 09:24:12 +01:00