75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
package key
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import (
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"crypto/ecdsa"
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"errors"
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"fmt"
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"github.com/nspcc-dev/neo-go/cli/flags"
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"github.com/nspcc-dev/neo-go/cli/input"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/spf13/viper"
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)
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// Key-related errors.
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var (
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ErrFs = errors.New("unable to read file from given path")
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ErrInvalidKey = errors.New("provided key is incorrect, only wallet or binary key supported")
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ErrInvalidAddress = errors.New("--address option must be specified and valid")
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ErrInvalidPassword = errors.New("invalid password for the encrypted key")
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)
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// FromWallet returns private key of the wallet account.
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func FromWallet(w *wallet.Wallet, addrStr string) (*ecdsa.PrivateKey, error) {
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var (
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addr util.Uint160
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err error
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)
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if addrStr == "" {
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printVerbose("Using default wallet address")
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addr = w.GetChangeAddress()
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} else {
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addr, err = flags.ParseAddress(addrStr)
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if err != nil {
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printVerbose("Can't parse address: %s", addrStr)
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return nil, ErrInvalidAddress
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}
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}
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acc := w.GetAccount(addr)
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if acc == nil {
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printVerbose("Can't find wallet account for %s", addrStr)
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return nil, ErrInvalidAddress
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}
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pass, err := getPassword()
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if err != nil {
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printVerbose("Can't read password: %v", err)
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return nil, ErrInvalidPassword
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}
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if err := acc.Decrypt(pass, keys.NEP2ScryptParams()); err != nil {
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printVerbose("Can't decrypt account: %v", err)
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return nil, ErrInvalidPassword
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}
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return &acc.PrivateKey().PrivateKey, nil
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}
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func getPassword() (string, error) {
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// this check allows empty passwords
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if viper.IsSet("password") {
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return viper.GetString("password"), nil
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}
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return input.ReadPassword("Enter password > ")
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}
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func printVerbose(format string, a ...interface{}) {
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if viper.GetBool("verbose") {
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fmt.Printf(format+"\n", a...)
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}
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}
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