tcryptohelpers.go - tordam - A library for peer discovery inside the Tor network
 (HTM) git clone https://git.parazyd.org/tordam
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) README
 (DIR) LICENSE
       ---
       tcryptohelpers.go (1192B)
       ---
            1 // Copyright (c) 2017-2021 Ivan Jelincic <parazyd@dyne.org>
            2 //
            3 // This file is part of tordam
            4 //
            5 // This program is free software: you can redistribute it and/or modify
            6 // it under the terms of the GNU Affero General Public License as published by
            7 // the Free Software Foundation, either version 3 of the License, or
            8 // (at your option) any later version.
            9 //
           10 // This program is distributed in the hope that it will be useful,
           11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
           12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
           13 // GNU Affero General Public License for more details.
           14 //
           15 // You should have received a copy of the GNU Affero General Public License
           16 // along with this program. If not, see <https://www.gnu.org/licenses/>.
           17 
           18 package tordam
           19 
           20 import (
           21         "crypto/rand"
           22         "encoding/base64"
           23         "fmt"
           24 )
           25 
           26 // RandomGarbage returns a base64 encoded string of n bytes of entropy.
           27 func RandomGarbage(n int) (string, error) {
           28         garbage := make([]byte, n)
           29         read, err := rand.Read(garbage)
           30         if err != nil {
           31                 return "", err
           32         }
           33         if n != read {
           34                 return "", fmt.Errorf("read %d, but requested %d bytes", read, n)
           35         }
           36         return base64.StdEncoding.EncodeToString(garbage), nil
           37 }