mirror of
https://github.com/caddyserver/caddy.git
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85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package caddyauth
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import (
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"encoding/base64"
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"flag"
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"fmt"
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"github.com/caddyserver/caddy/v2"
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caddycmd "github.com/caddyserver/caddy/v2/cmd"
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"golang.org/x/crypto/bcrypt"
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"golang.org/x/crypto/scrypt"
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)
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func init() {
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caddycmd.RegisterCommand(caddycmd.Command{
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Name: "hash-password",
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Func: cmdHashPassword,
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Usage: "--plaintext <password> [--salt <string>] [--algorithm <name>]",
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Short: "Hashes a password and writes base64",
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Long: `
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Convenient way to hash a plaintext password. The resulting
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hash is written to stdout as a base64 string.
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--algorithm may be bcrypt or scrypt. If script, the default
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parameters are used.
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Use the --salt flag for algorithms which require a salt to
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be provided (scrypt).
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`,
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Flags: func() *flag.FlagSet {
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fs := flag.NewFlagSet("hash-password", flag.ExitOnError)
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fs.String("algorithm", "bcrypt", "Name of the hash algorithm")
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fs.String("plaintext", "", "The plaintext password")
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fs.String("salt", "", "The password salt")
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return fs
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}(),
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})
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}
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func cmdHashPassword(fs caddycmd.Flags) (int, error) {
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algorithm := fs.String("algorithm")
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plaintext := []byte(fs.String("plaintext"))
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salt := []byte(fs.String("salt"))
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if len(plaintext) == 0 {
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return caddy.ExitCodeFailedStartup, fmt.Errorf("password is required")
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}
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var hash []byte
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var err error
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switch algorithm {
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case "bcrypt":
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hash, err = bcrypt.GenerateFromPassword(plaintext, bcrypt.DefaultCost)
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case "scrypt":
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def := ScryptHash{}
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def.SetDefaults()
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hash, err = scrypt.Key(plaintext, salt, def.N, def.R, def.P, def.KeyLength)
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default:
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return caddy.ExitCodeFailedStartup, fmt.Errorf("unrecognized hash algorithm: %s", algorithm)
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}
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if err != nil {
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return caddy.ExitCodeFailedStartup, err
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}
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hashBase64 := base64.StdEncoding.EncodeToString([]byte(hash))
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fmt.Println(hashBase64)
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return 0, nil
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}
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