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accounts, eth, clique, signer: support for external signer API (#18079)

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* accounts, eth, clique: implement external backend + move sighash calc to backend

* signer: implement account_Version on external API

* accounts/external: enable ipc, add copyright

* accounts, internal, signer: formatting

* node: go fmt

* flags: disallow --dev in combo with --externalsigner

* accounts: remove clique-specific signing method, replace with more generic

* accounts, consensus: formatting + fix error in tests

* signer/core: remove (test-) import cycle

* clique: remove unused import

* accounts: remove CliqueHash and avoid dependency on package crypto

* consensus/clique: unduplicate header encoding
This commit is contained in:
Martin Holst Swende
2019-02-05 11:23:57 +01:00
committed by GitHub
parent 520024dfd6
commit 43e8efe895
17 changed files with 460 additions and 117 deletions
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20
internal/ethapi/api.go
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@ -217,7 +217,7 @@ func NewPrivateAccountAPI(b Backend, nonceLock *AddrLocker) *PrivateAccountAPI {
}
}
// ListAccounts will return a list of addresses for accounts this node manages.
// listAccounts will return a list of addresses for accounts this node manages.
func (s *PrivateAccountAPI) ListAccounts() []common.Address {
addresses := make([]common.Address, 0) // return [] instead of nil if empty
for _, wallet := range s.am.Wallets() {
@ -409,18 +409,6 @@ func (s *PrivateAccountAPI) SignTransaction(ctx context.Context, args SendTxArgs
return &SignTransactionResult{data, signed}, nil
}
// signHash is a helper function that calculates a hash for the given message that can be
// safely used to calculate a signature from.
//
// The hash is calulcated as
// keccak256("\x19Ethereum Signed Message:\n"${message length}${message}).
//
// This gives context to the signed message and prevents signing of transactions.
func signHash(data []byte) []byte {
msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), data)
return crypto.Keccak256([]byte(msg))
}
// Sign calculates an Ethereum ECDSA signature for:
// keccack256("\x19Ethereum Signed Message:\n" + len(message) + message))
//
@ -439,7 +427,7 @@ func (s *PrivateAccountAPI) Sign(ctx context.Context, data hexutil.Bytes, addr c
return nil, err
}
// Assemble sign the data with the wallet
signature, err := wallet.SignHashWithPassphrase(account, passwd, signHash(data))
signature, err := wallet.SignTextWithPassphrase(account, passwd, data)
if err != nil {
log.Warn("Failed data sign attempt", "address", addr, "err", err)
return nil, err
@ -467,7 +455,7 @@ func (s *PrivateAccountAPI) EcRecover(ctx context.Context, data, sig hexutil.Byt
}
sig[64] -= 27 // Transform yellow paper V from 27/28 to 0/1
rpk, err := crypto.SigToPub(signHash(data), sig)
rpk, err := crypto.SigToPub(accounts.TextHash(data), sig)
if err != nil {
return common.Address{}, err
}
@ -1357,7 +1345,7 @@ func (s *PublicTransactionPoolAPI) Sign(addr common.Address, data hexutil.Bytes)
return nil, err
}
// Sign the requested hash with the wallet
signature, err := wallet.SignHash(account, signHash(data))
signature, err := wallet.SignText(account, data)
if err == nil {
signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
}