From 6f4741e9778e50f32dac1c4eddaf3a8d12cf2721 Mon Sep 17 00:00:00 2001
From: la-ninpre <leobrekalini@gmail.com>
Date: Mon, 23 Nov 2020 13:10:34 +0300
Subject: add gpg backup script

---
 .local/bin/backup-secret-key | 55 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100755 .local/bin/backup-secret-key

diff --git a/.local/bin/backup-secret-key b/.local/bin/backup-secret-key
new file mode 100755
index 0000000..62c107a
--- /dev/null
+++ b/.local/bin/backup-secret-key
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+ERR_1_MSG="Please specify valid uid or keyid."
+QRENCODE_FLAGS="-8 -l H"
+
+[ -z $1 ] && ( echo $ERR_1_MSG && exit 1 )
+
+gpg -K $1 > /dev/null || ( echo $ERR_1_MSG && exit 1 )
+
+export_secret() {
+    gpg --export-secret-keys $1 \
+        | paperkey --output-type raw 
+}
+
+export_public() {
+    gpg --export $1
+}
+
+qr_png_prettify () {
+    OUTPUT_TITLE="$1 paperkey backup   $(date +"%F %T")"
+    montage -pointsize 18 \
+            -title "$OUTPUT_TITLE" \
+            -label pubkey "$2" \
+            -label seckey "$3" \
+            -mode concatenate \
+            backup.png
+}
+
+qr_png () {
+    QRENCODE_FLAGS="${QRENCODE_FLAGS} -t png -s 10"
+    QRENCODE_PUBKEY_FLAGS="${QRENCODE_FLAGS} -o $1-pubkey.png"
+    QRENCODE_SECKEY_FLAGS="${QRENCODE_FLAGS} -o $1-seckey.png"
+
+    export_secret $1 | qrencode $QRENCODE_SECKEY_FLAGS
+    export_public $1 | qrencode $QRENCODE_PUBKEY_FLAGS
+
+    qr_png_prettify $1 "$1-pubkey.png" "$1-seckey.png"
+
+    rm "$1-pubkey.png" "$1-seckey.png"
+}
+
+qr_utf8 () {
+    QRENCODE_FLAGS="${QRENCODE_FLAGS} -t UTF8 -o -"
+
+    echo "$1 secret paperkey"
+    export_secret $1 | qrencode $QRENCODE_FLAGS
+    echo "$1 public key"
+    export_public $1 | qrencode $QRENCODE_FLAGS
+}
+
+case $2 in
+    "png" ) qr_png $1 ;;
+    * ) qr_utf8 $1 ;;
+esac
+
-- 
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