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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
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6
whisper/whisperv2/message.go
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@ -21,11 +21,13 @@ package whisperv2
import (
"crypto/ecdsa"
crand "crypto/rand"
"math/rand"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/ecies"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
)
@ -131,13 +133,13 @@ func (self *Message) Recover() *ecdsa.PublicKey {
// encrypt encrypts a message payload with a public key.
func (self *Message) encrypt(key *ecdsa.PublicKey) (err error) {
self.Payload, err = crypto.Encrypt(key, self.Payload)
self.Payload, err = ecies.Encrypt(crand.Reader, ecies.ImportECDSAPublic(key), self.Payload, nil, nil)
return
}
// decrypt decrypts an encrypted payload with a private key.
func (self *Message) decrypt(key *ecdsa.PrivateKey) error {
cleartext, err := crypto.Decrypt(key, self.Payload)
cleartext, err := ecies.ImportECDSA(key).Decrypt(crand.Reader, self.Payload, nil, nil)
if err == nil {
self.Payload = cleartext
}