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// Copyright 2012, Jeramey Crawford <jeramey@antihe.ro>
// Copyright 2013, Jonas mg
// All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file.
// Package apr1_crypt implements the standard Unix MD5-crypt algorithm created
// by Poul-Henning Kamp for FreeBSD, and modified by the Apache project.
//
// The only change from MD5-crypt is the use of the magic constant "$apr1$"
// instead of "$1$". The algorithms are otherwise identical.
package apr1_crypt
import (
"github.com/tredoe/osutil/user/crypt"
"github.com/tredoe/osutil/user/crypt/common"
"github.com/tredoe/osutil/user/crypt/md5_crypt"
)
func init() {
crypt.RegisterCrypt(crypt.APR1, New, MagicPrefix)
}
const (
MagicPrefix = "$apr1$"
SaltLenMin = 1
SaltLenMax = 8
RoundsDefault = 1000
)
var md5Crypt = md5_crypt.New()
func init() {
md5Crypt.SetSalt(GetSalt())
}
type crypter struct{ Salt common.Salt }
// New returns a new crypt.Crypter computing the variant "apr1" of MD5-crypt
func New() crypt.Crypter { return &crypter{common.Salt{}} }
func (c *crypter) Generate(key, salt []byte) (string, error) {
return md5Crypt.Generate(key, salt)
}
func (c *crypter) Verify(hashedKey string, key []byte) error {
return md5Crypt.Verify(hashedKey, key)
}
func (c *crypter) Cost(hashedKey string) (int, error) { return RoundsDefault, nil }
func (c *crypter) SetSalt(salt common.Salt) {}
func GetSalt() common.Salt {
return common.Salt{
MagicPrefix: []byte(MagicPrefix),
SaltLenMin: SaltLenMin,
SaltLenMax: SaltLenMax,
RoundsDefault: RoundsDefault,
}
}
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