plugeth/vendor/github.com/btcsuite/btcd/btcec
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
..
btcec.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
ciphering.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
doc.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
field.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
genprecomps.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
gensecp256k1.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
precompute.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
privkey.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
pubkey.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
README.md crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
secp256k1.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00
signature.go crypto: add btcec fallback for sign/recover without cgo (#3680) 2017-02-18 09:24:12 +01:00

btcec

[Build Status] (https://travis-ci.org/btcsuite/btcec) ![ISC License] (http://img.shields.io/badge/license-ISC-blue.svg) [GoDoc] (http://godoc.org/github.com/btcsuite/btcd/btcec)

Package btcec implements elliptic curve cryptography needed for working with Bitcoin (secp256k1 only for now). It is designed so that it may be used with the standard crypto/ecdsa packages provided with go. A comprehensive suite of test is provided to ensure proper functionality. Package btcec was originally based on work from ThePiachu which is licensed under the same terms as Go, but it has signficantly diverged since then. The btcsuite developers original is licensed under the liberal ISC license.

Although this package was primarily written for btcd, it has intentionally been designed so it can be used as a standalone package for any projects needing to use secp256k1 elliptic curve cryptography.

Installation and Updating

$ go get -u github.com/btcsuite/btcd/btcec

Examples

GPG Verification Key

All official release tags are signed by Conformal so users can ensure the code has not been tampered with and is coming from the btcsuite developers. To verify the signature perform the following:

  • Download the public key from the Conformal website at https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt

  • Import the public key into your GPG keyring:

    gpg --import GIT-GPG-KEY-conformal.txt
    
  • Verify the release tag with the following command where TAG_NAME is a placeholder for the specific tag:

    git tag -v TAG_NAME
    

License

Package btcec is licensed under the copyfree ISC License except for btcec.go and btcec_test.go which is under the same license as Go.