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* Add yubikey-luks-open script It allows for opening LUKS containers protected with yubikey-luks outside initramfs. It's useful for external encrypted disks or system rescue in case of broken initramfs. * yubikey-luks-open script: add to debian build * Readme: add yubikey-luks-open info * intendation fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| #!/bin/sh | ||
| DISK="/dev/sda3" | ||
| NAME="yubikey-luks" | ||
| DBG=0 | ||
| TMP_FILE=/tmp/new_key | ||
| set -e | ||
| . /etc/ykluks.cfg | ||
|
|
||
| if [ "$(id -u)" -ne 0 ]; then | ||
| echo "You must be root." 1>&2 | ||
| exit 1 | ||
| fi | ||
|
|
||
| while getopts ":d:n:hv" opt; do | ||
| case $opt in | ||
| d) | ||
| DISK=$OPTARG | ||
| echo "setting disk to $OPTARG." | ||
| ;; | ||
| n) | ||
| NAME=$OPTARG | ||
| echo "setting name to $OPTARG." | ||
| ;; | ||
| v) DBG=1 | ||
| echo "debugging enabled" | ||
| ;; | ||
| h) | ||
| echo | ||
| echo " -d <partition>: set the partition" | ||
| echo " -n <name> : set the container name" | ||
| echo " -v : show input/output in cleartext" | ||
| echo | ||
| exit 1 | ||
| ;; | ||
| \?) | ||
| echo "Invalid option: -$OPTARG" >&2 | ||
| ;; | ||
| esac | ||
| done | ||
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| echo "This script will try opening $NAME LUKS container on drive $DISK . If this is not what you intended, exit now!" | ||
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| P1=$(/lib/cryptsetup/askpass "Please insert a yubikey and enter password created with yubikey-luks-enroll.") | ||
| if [ "$DBG" = "1" ]; then echo "Password: $P1"; fi | ||
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|
||
| if [ "$HASH" = "1" ]; then | ||
| P1=$(printf %s "$P1" | sha256sum | awk '{print $1}') | ||
| if [ "$DBG" = "1" ]; then echo "Password hash: $P1"; fi | ||
| fi | ||
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| R="$(ykchalresp -2 "$P1" 2>/dev/null || true)" | ||
| if [ "$DBG" = "1" ]; then echo "Yubikey response: $R"; fi | ||
|
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| touch $TMP_FILE | ||
| chmod 600 $TMP_FILE | ||
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| if [ "$CONCATENATE" = "1" ]; then | ||
| echo -n "$P1$R" > $TMP_FILE | ||
| if [ "$DBG" = "1" ]; then echo "LUKS key: $P1$R"; fi | ||
| else | ||
| echo -n "$R" > $TMP_FILE | ||
| if [ "$DBG" = "1" ]; then echo "LUKS key: $R"; fi | ||
| fi | ||
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| cryptsetup --key-file=$TMP_FILE luksOpen "$DISK" "$NAME" | ||
| shred -u $TMP_FILE | ||
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| exit 0 |