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- // Copyright 2018 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- package core
- import (
- "errors"
- "regexp"
- )
- var printable7BitAscii = regexp.MustCompile("^[A-Za-z0-9!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~ ]+$")
- // ValidatePasswordFormat returns an error if the password is too short, or consists of characters
- // outside the range of the printable 7bit ascii set
- func ValidatePasswordFormat(password string) error {
- if len(password) < 10 {
- return errors.New("password too short (<10 characters)")
- }
- if !printable7BitAscii.MatchString(password) {
- return errors.New("password contains invalid characters - only 7bit printable ascii allowed")
- }
- return nil
- }
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