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Implemented Electrum mnemonic feature

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Sun Knudsen 2021-04-09 13:57:09 -04:00
parent 3ca2601faa
commit 81246f8000
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GPG key ID: 1FA767862BBD1305
12 changed files with 210 additions and 123 deletions
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54
how-to-create-encrypted-paper-backup/qr-backup.sh
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@ -11,17 +11,28 @@ while [[ $# -gt 0 ]]; do
"Usage: qr-backup.sh [options]" \
"" \
"Options:" \
" --create-seed create 24-word BIP39 seed" \
" --validate-seed validate if secret is BIP39 seed" \
" -h, --help display help for command"
" --create-bip39-mnemonic create BIP39 mnemonic" \
" --create-electrum-mnemonic create Electrum mnemonic" \
" --validate-bip39-mnemonic validate if secret is valid BIP39 mnemonic" \
" --label <label> print label after short hash" \
" -h, --help display help for command"
exit 0
;;
--create-seed)
create_seed=true
--create-bip39-mnemonic)
create_bip39_mnemonic=true
shift
;;
--validate-seed)
validate_seed=true
--create-electrum-mnemonic)
create_electrum_mnemonic=true
shift
;;
--validate-bip39-mnemonic)
validate_bip39_mnemonic=true
shift
;;
--label)
label=$2
shift
shift
;;
*)
@ -70,9 +81,16 @@ if ! mount | grep $usb > /dev/null; then
sudo mount $dev $usb -o uid=pi,gid=pi
fi
if [ "$create_seed" = true ]; then
printf "%s\n" "Creating 24-word BIP39 seed…"
secret=$(python3 $basedir/create-seed.py)
if [ "$create_bip39_mnemonic" = true ]; then
printf "%s\n" "Creating BIP39 mnemonic…"
secret=$(python3 $basedir/create-bip39-mnemonic.py)
echo $secret
sleep 1
fi
if [ "$create_electrum_mnemonic" = true ]; then
printf "%s\n" "Creating Electrum mnemonic…"
secret=$(electrum make_seed --nbits 264 --offline)
echo $secret
sleep 1
fi
@ -91,10 +109,10 @@ if [ -z "$secret" ]; then
fi
fi
if [ "$validate_seed" = true ]; then
printf "%s\n" "Validate if secret is BIP39 seed…"
if ! echo -n $secret | python3 $basedir/validate-seed.py; then
printf "$red%s$normal\n" "Invalid BIP39 seed"
if [ "$validate_bip39_mnemonic" = true ]; then
printf "%s\n" "Validating if secret is valid BIP39 mnemonic…"
if ! echo -n $secret | python3 $basedir/validate-bip39-mnemonic.py; then
printf "$red%s$normal\n" "Invalid BIP39 mnemonic"
exit 1
fi
fi
@ -114,7 +132,13 @@ echo -n "$encrypted_secret" | qr --error-correction=H > "$tmp/secret.png"
font_size=$(echo "$(convert "$tmp/secret.png" -format "%h" info:) / 8" | bc)
text_offset=$(echo "$font_size * 1.5" | bc)
convert "$tmp/secret.png" -gravity center -scale 200% -extent 125% -scale 125% -gravity south -font /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf -pointsize $font_size -fill black -draw "text 0,$text_offset '$encrypted_secret_short_hash'" "$usb/$encrypted_secret_short_hash.jpg"
if [ -z "$label" ]; then
text="$encrypted_secret_short_hash"
else
text="$encrypted_secret_short_hash $label"
fi
convert "$tmp/secret.png" -gravity center -scale 200% -extent 125% -scale 125% -gravity south -font /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf -pointsize $font_size -fill black -draw "text 0,$text_offset '$text'" "$usb/$encrypted_secret_short_hash.jpg"
printf "%s\n" "Show SHA512 hash as QR code? (y or n)? "