git.scottworley.com Git - overonion/blob - overonion-make-key

   1 #!/bin/bash
   2
   3 ciphers=(
   4   bf-cbc bf-cfb bf-ecb bf-ofb
   5   cast-cbc cast5-cbc cast5-cfb cast5-ecb cast5-ofb
   6   des-cbc des-cfb des-ofb des-ecb
   7   des-ede-cbc des-ede des-ede-cfb des-ede-ofb
   8   des-ede3-cbc des-ede3 des-ede3-cfb des-ede3-ofb
   9   idea-cbc idea-cfb idea-ecb idea-ofb
  10   rc2-cbc rc2-cfb rc2-ecb rc2-ofb rc2-64-cbc rc2-40-cbc
  11   rc4 rc4-40
  12   rc5-cbc rc5-cfb rc5-ecb rc5-ofb
  13   aes-128-cbc aes-128-cfb aes-128-cfb1 aes-128-cfb8 aes-128-ecb aes-128-ofb
  14   aes-192-cbc aes-192-cfb aes-192-cfb1 aes-192-cfb8 aes-192-ecb aes-192-ofb
  15   aes-256-cbc aes-256-cfb aes-256-cfb1 aes-256-cfb8 aes-256-ecb aes-256-ofb
  16 )
  17
  18 umask 077
  19
  20 random_source="/dev/random"
  21 if [[ "$1" == '--make_INSECURE_key' ]];then
  22   shift
  23   random_source="/dev/urandom"
  24 fi
  25
  26 if (( $# != 1));then
  27   echo "usage: overonion-make-key keyfile" >&2
  28   exit 1
  29 fi
  30 keyfile=$1
  31 if [[ -e "$keyfile" ]];then
  32   echo "That keyfile already exists.  I refuse to overwrite it." >&2
  33   exit 1
  34 fi
  35
  36 i=0
  37 while read -r cipher;do
  38   echo -n $'\r'"Generating key $((++i))/${#ciphers[*]}" >&2
  39   cat >> "$keyfile" <<< "$cipher $(head -c 99 "$random_source" | base64 --wrap=0 )"
  40 done < <( IFS=$'\n'; shuf <<< "${ciphers[*]}"; )
  41 echo >&2