Initial commit

.editorconfig

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+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

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+*~
+.DS_Store
+*.swp
+target

README

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+Two scripts to create qr codes from a private key and to restore them.
+
+Use "create_codes" to create a pdf "qr.private.pdf" with arranged qrcodes (it
+takes the key id as an input).
+
+When restoring, scan the qr codes in the order of their numbers, put the parts
+into numbered txt files and run the "restore_key" script with the first arg being
+the path to the public key and the second one the path to the directory with the
+txt files.
+

bin/create_codes

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+#!/usr/bin/env bash
+set -e
+
+KEY=$1
+OUTPUT=${2:-qr.private.pdf}
+SINGLE_SIZE=${3:-1024}
+
+gpg2 --export-secret-key "$KEY" | paperkey --output-type raw | base64 | split -b "$SINGLE_SIZE"
+
+index=1
+for i in x*; do
+    qrencode --8bit --level=M -o "qr.$index.png" < "$i"
+    let index=index+1
+done
+
+montage -title "private key for $KEY" -label "%t" -mode concatenate $(find . -name  "qr.*.png" | sort -V) "$OUTPUT"
+
+function finish {
+    rm -f x*
+    rm -f qr.*.png
+}
+
+trap finish EXIT

bin/restore_key

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+#!/usr/bin/env sh
+set -e
+
+PUB_KEY=$1
+INPUT_DIR=${2:-.}
+
+cat "$INPUT_DIR"/*.txt | base64 -D | paperkey --pubring "$PUB_KEY" --input-type raw --output private.key