22 lines
664 B
Bash
Executable file
22 lines
664 B
Bash
Executable file
#!/usr/bin/env bash
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# nix-shell https://github.com/sgillespie/nixos-yubikey-luks/archive/master.tar.gz
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rbtohex() {
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( od -An -vtx1 | tr -d ' \n' )
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}
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hextorb() {
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( tr '[:lower:]' '[:upper:]' | sed -e 's/\([0-9A-F]\{2\}\)/\\\\\\x\1/gI'| xargs printf )
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}
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key_length=512
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iterations=1000000
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salt="$(head -n 1 /mnt/crypt-storage/default)"
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chal="$(echo -n $salt | openssl dgst -binary -sha512 | rbtohex)"
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resp="$(ykchalresp -2 -x $chal 2>/dev/null)"
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user_key=
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read -r user_key
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luks_key="$(echo -n $user_key | pbkdf2-sha512 $(($key_length / 8)) $iterations $resp | rbtohex)"
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echo -n $luks_key | hextorb | sudo cryptsetup luksOpen /dev/sda2 crypted --key-file=-
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