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password.go
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password.go
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/*
* Copyright (C) 2017 Dgraph Labs, Inc. and Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package types
import (
"golang.org/x/crypto/bcrypt"
"github.com/dgraph-io/dgraph/x"
)
const (
pwdLenLimit = 6
)
func Encrypt(plain string) (string, error) {
if len(plain) < pwdLenLimit {
return "", x.Errorf("Password too short, i.e. should has at least 6 chars")
}
encrypted, err := bcrypt.GenerateFromPassword([]byte(plain), bcrypt.DefaultCost)
if err != nil {
return "", err
}
return string(encrypted), nil
}
func VerifyPassword(plain, encrypted string) error {
if len(plain) < pwdLenLimit || len(encrypted) == 0 {
return x.Errorf("invalid password/crypted string")
}
return bcrypt.CompareHashAndPassword([]byte(encrypted), []byte(plain))
}