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

   1 #!/bin/bash
   2
   3 key_size=99
   4 hash_salt_size=63
   5
   6 ciphers=(
   7   bf-cbc bf-cfb bf-ecb bf-ofb
   8   cast-cbc cast5-cbc cast5-cfb cast5-ecb cast5-ofb
   9   des-cbc des-cfb des-ofb des-ecb
  10   des-ede-cbc des-ede des-ede-cfb des-ede-ofb
  11   des-ede3-cbc des-ede3 des-ede3-cfb des-ede3-ofb
  12   idea-cbc idea-cfb idea-ecb idea-ofb
  13   rc2-cbc rc2-cfb rc2-ecb rc2-ofb rc2-64-cbc rc2-40-cbc
  14   rc4 rc4-40
  15   rc5-cbc rc5-cfb rc5-ecb rc5-ofb
  16   aes-128-cbc aes-128-cfb aes-128-cfb1 aes-128-cfb8 aes-128-ecb aes-128-ofb
  17   aes-192-cbc aes-192-cfb aes-192-cfb1 aes-192-cfb8 aes-192-ecb aes-192-ofb
  18   aes-256-cbc aes-256-cfb aes-256-cfb1 aes-256-cfb8 aes-256-ecb aes-256-ofb
  19 )
  20 hashes=(
  21   sha sha1 mdc2 ripemd160 sha224 sha256 sha384 sha512 md4 md5 dss1
  22 )
  23
  24 umask 077
  25
  26 random_source="/dev/random"
  27 if [[ "$1" == '--make_INSECURE_key' ]];then
  28   shift
  29   random_source="/dev/urandom"
  30 fi
  31
  32 if (( $# != 1));then
  33   echo "usage: overonion-make-key keyfile" >&2
  34   exit 1
  35 fi
  36 keyfile=$1
  37 if [[ -e "$keyfile" ]];then
  38   echo "That keyfile already exists.  I refuse to overwrite it." >&2
  39   exit 1
  40 fi
  41
  42 keys_needed=$((${#ciphers[*]} * 2 + ${#hashes[*]} * 4))
  43 keys_generated=0
  44
  45 function generate_keys() {
  46   while read -r cipher;do
  47     echo -n $'\r'"Generating key $((++keys_generated))/$keys_needed " >&2
  48     echo "openssl-enc $cipher $(head -c "$key_size" "$random_source" | base64 --wrap=0 )"
  49   done < <( IFS=$'\n'; shuf <<< "${ciphers[*]}"; )
  50 }
  51
  52 function generate_hashes() {
  53   while read -r hash;do
  54     echo -n $'\r'"Generating salt $((keys_generated += 2))/$keys_needed" >&2
  55     echo "openssl-dgst $hash $(head -c "$hash_salt_size" "$random_source" | base64 --wrap=0 ) $(head -c "$hash_salt_size" "$random_source" | base64 --wrap=0 )"
  56   done < <( IFS=$'\n'; shuf <<< "${hashes[*]}"; )
  57 }
  58
  59 {
  60   generate_hashes
  61   generate_keys
  62   echo "reverse"
  63   generate_keys
  64   generate_hashes
  65 } > "$keyfile"
  66
  67 echo 2>&1