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crypto: add btcec fallback for sign/recover without cgo (#3680)

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* 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
This commit is contained in:
Felix Lange
2017-02-18 09:24:12 +01:00
committed by Jeffrey Wilcke
parent bf21549faa
commit 9b0af51386
32 changed files with 3929 additions and 224 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
crypto/ecies/ecies_test.go
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@ -31,7 +31,6 @@ package ecies
import (
"bytes"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/sha256"
@ -42,7 +41,7 @@ import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/crypto/secp256k1"
"github.com/ethereum/go-ethereum/crypto"
)
var dumpEnc bool
@ -150,7 +149,7 @@ func TestSharedKey(t *testing.T) {
func TestSharedKeyPadding(t *testing.T) {
// sanity checks
prv0 := hexKey("1adf5c18167d96a1f9a0b1ef63be8aa27eaf6032c233b2b38f7850cf5b859fd9")
prv1 := hexKey("97a076fc7fcd9208240668e31c9abee952cbb6e375d1b8febc7499d6e16f1a")
prv1 := hexKey("0097a076fc7fcd9208240668e31c9abee952cbb6e375d1b8febc7499d6e16f1a")
x0, _ := new(big.Int).SetString("1a8ed022ff7aec59dc1b440446bdda5ff6bcb3509a8b109077282b361efffbd8", 16)
x1, _ := new(big.Int).SetString("6ab3ac374251f638d0abb3ef596d1dc67955b507c104e5f2009724812dc027b8", 16)
y0, _ := new(big.Int).SetString("e040bd480b1deccc3bc40bd5b1fdcb7bfd352500b477cb9471366dbd4493f923", 16)
@ -354,7 +353,7 @@ func BenchmarkGenSharedKeyP256(b *testing.B) {
// Benchmark the generation of S256 shared keys.
func BenchmarkGenSharedKeyS256(b *testing.B) {
prv, err := GenerateKey(rand.Reader, secp256k1.S256(), nil)
prv, err := GenerateKey(rand.Reader, crypto.S256(), nil)
if err != nil {
fmt.Println(err.Error())
b.FailNow()
@ -597,6 +596,29 @@ func TestBasicKeyValidation(t *testing.T) {
}
}
func TestBox(t *testing.T) {
prv1 := hexKey("4b50fa71f5c3eeb8fdc452224b2395af2fcc3d125e06c32c82e048c0559db03f")
prv2 := hexKey("d0b043b4c5d657670778242d82d68a29d25d7d711127d17b8e299f156dad361a")
pub2 := &prv2.PublicKey
message := []byte("Hello, world.")
ct, err := Encrypt(rand.Reader, pub2, message, nil, nil)
if err != nil {
t.Fatal(err)
}
pt, err := prv2.Decrypt(rand.Reader, ct, nil, nil)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(pt, message) {
t.Fatal("ecies: plaintext doesn't match message")
}
if _, err = prv1.Decrypt(rand.Reader, ct, nil, nil); err == nil {
t.Fatal("ecies: encryption should not have succeeded")
}
}
// Verify GenerateShared against static values - useful when
// debugging changes in underlying libs
func TestSharedKeyStatic(t *testing.T) {
@ -628,11 +650,10 @@ func TestSharedKeyStatic(t *testing.T) {
}
}
// TODO: remove after refactoring packages crypto and crypto/ecies
func hexKey(prv string) *PrivateKey {
priv := new(ecdsa.PrivateKey)
priv.PublicKey.Curve = secp256k1.S256()
priv.D, _ = new(big.Int).SetString(prv, 16)
priv.PublicKey.X, priv.PublicKey.Y = secp256k1.S256().ScalarBaseMult(priv.D.Bytes())
return ImportECDSA(priv)
key, err := crypto.HexToECDSA(prv)
if err != nil {
panic(err)
}
return ImportECDSA(key)
}