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loadkeystore.go
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/
loadkeystore.go
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package tools
import (
"errors"
"fmt"
"io/ioutil"
"os"
"strings"
"github.com/acentswap/abridge/tools/keystore"
)
var errUnsafeFilePermissions = errors.New("unsafe file permissions, want 0400")
// SafeReadFile check permissions is '0400' and read file
func SafeReadFile(file string) ([]byte, error) {
fi, err := os.Stat(file)
if err != nil {
return nil, err
}
if fi.Mode() != 0400 {
return nil, errUnsafeFilePermissions
}
return ioutil.ReadFile(file) // nolint:gosec // ok
}
// LoadKeyStore load keystore from keyfile and passfile
func LoadKeyStore(keyfile, passfile string) (*keystore.Key, error) {
keyjson, err := SafeReadFile(keyfile)
if err != nil {
return nil, fmt.Errorf("read keystore fail %w", err)
}
passdata, err := SafeReadFile(passfile)
if err != nil {
return nil, fmt.Errorf("read password fail %w", err)
}
passwd := strings.TrimSpace(string(passdata))
key, err := keystore.DecryptKey(keyjson, passwd)
if err != nil {
return nil, fmt.Errorf("decrypt key fail %w", err)
}
return key, nil
}