34 lines
847 B
Plaintext
34 lines
847 B
Plaintext
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#!/usr/bin/perl -w
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# Generate a keyfile for archives encryption
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my $keyfile = '/etc/BackupPC/archive.key';
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if (! -e $keyfile){
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use MIME::Base64 qw(encode_base64);
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my $key = "not set due to error";
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if ( open( RANDOM, "/dev/urandom" ) ){
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my $buf;
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# 57 bytes is a full line of Base64 coding, and contains
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# 456 bits of randomness - given a perfectly random /dev/random
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if ( read( RANDOM, $buf, 57 ) != 57 )
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{
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warn("Short read from /dev/random: $!");
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}
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else
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{
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$key = encode_base64($buf);
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chomp $key;
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}
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close RANDOM;
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}
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else
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{
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warn "Could not open /dev/urandom: $!";
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}
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open( KEYFILE, ">$keyfile") || warn "Could not open $keyfile: $!";
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print KEYFILE $key;
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close KEYFILE;
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}
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