diff options
Diffstat (limited to 'modules/scripts/gpg-backup')
| -rw-r--r-- | modules/scripts/gpg-backup/completion.zsh | 23 | ||||
| -rw-r--r-- | modules/scripts/gpg-backup/default.nix | 27 | ||||
| -rw-r--r-- | modules/scripts/gpg-backup/script.sh | 149 |
3 files changed, 0 insertions, 199 deletions
diff --git a/modules/scripts/gpg-backup/completion.zsh b/modules/scripts/gpg-backup/completion.zsh deleted file mode 100644 index f47bbe8..0000000 --- a/modules/scripts/gpg-backup/completion.zsh +++ /dev/null @@ -1,23 +0,0 @@ -#compdef gpg-backup - -_arguments \ - '1: :->cmds' \ - '*::arg:->args' - -case $state in - cmds) - local -a commands - commands=( - 'export:Export all GPG keys to a passphrase-protected file' - 'import:Import GPG keys from a backup file' - ) - _describe 'command' commands - ;; - args) - case $words[1] in - export|import) - _files - ;; - esac - ;; -esac diff --git a/modules/scripts/gpg-backup/default.nix b/modules/scripts/gpg-backup/default.nix deleted file mode 100644 index b97aad8..0000000 --- a/modules/scripts/gpg-backup/default.nix +++ /dev/null @@ -1,27 +0,0 @@ -{ - config, - lib, - pkgs, - ... -}: -let - inherit ((import ../lib.nix { inherit lib pkgs; })) mkScriptModule; - base = mkScriptModule { - name = "gpg-backup"; - path = ./script.sh; - description = "Export/import all GPG keys as a single passphrase-protected file with maximum S2K iteration count\nUsage: gpg-backup export filename.gpg | gpg-backup import filename.gpg"; - deps = [ - pkgs.bash - pkgs.gnupg - pkgs.gnutar - pkgs.coreutils - pkgs.findutils - ]; - completion.zsh = builtins.readFile ./completion.zsh; - inherit config; - }; -in -{ - options = base.options; - config = base.moduleConfig; -} diff --git a/modules/scripts/gpg-backup/script.sh b/modules/scripts/gpg-backup/script.sh deleted file mode 100644 index 57c216b..0000000 --- a/modules/scripts/gpg-backup/script.sh +++ /dev/null @@ -1,149 +0,0 @@ -#!/usr/bin/env bash -set -euo pipefail - -WORKDIR="$(mktemp -d)" - -cleanup() { - if [[ -d "$WORKDIR" ]]; then - find "$WORKDIR" -type f -exec shred -u -z {} \; 2>/dev/null || true - rm -rf "$WORKDIR" - fi -} -trap cleanup EXIT - -usage() { - echo "Usage:" - echo " $0 export <filename> Export all GPG keys to an encrypted file" - echo " $0 import <filename> Decrypt and import keys from a backup file" - exit 1 -} - -do_export() { - local outfile="$1" - - if [[ -e "$outfile" ]]; then - echo "!! Refusing to overwrite existing file: $outfile" >&2 - exit 1 - fi - - echo "==> Exporting public keys..." - gpg --export --armor > "$WORKDIR/public-keys.asc" - - echo "==> Exporting secret keys..." - gpg --export-secret-keys --armor > "$WORKDIR/secret-keys.asc" - - echo "==> Exporting secret subkeys (if any)..." - gpg --export-secret-subkeys --armor > "$WORKDIR/secret-subkeys.asc" || true - - echo "==> Exporting owner trust database..." - gpg --export-ownertrust > "$WORKDIR/ownertrust.txt" - - echo "==> Exporting revocation certificates..." - mkdir -p "$WORKDIR/revocation-certs" - if [[ -d "$HOME/.gnupg/openpgp-revocs.d" ]]; then - cp "$HOME"/.gnupg/openpgp-revocs.d/*.rev "$WORKDIR/revocation-certs/" 2>/dev/null || true - fi - - echo "==> Bundling everything into a single archive..." - tar -C "$WORKDIR" -cf "$WORKDIR/gpg-full-backup.tar" \ - public-keys.asc \ - secret-keys.asc \ - secret-subkeys.asc \ - ownertrust.txt \ - revocation-certs - - echo "==> Encrypting with GPG (AES256, SHA512, max S2K iteration count)..." - echo " You will be prompted for a passphrase — use a strong one." - gpg --symmetric \ - --cipher-algo AES256 \ - --digest-algo SHA512 \ - --s2k-mode 3 \ - --s2k-digest-algo SHA512 \ - --s2k-count 65011712 \ - --output "$outfile" \ - "$WORKDIR/gpg-full-backup.tar" - - echo "==> Verifying: attempting decryption to confirm it works..." - if gpg --decrypt "$outfile" > "$WORKDIR/verify.tar" 2>/dev/null; then - if cmp -s "$WORKDIR/gpg-full-backup.tar" "$WORKDIR/verify.tar"; then - echo "==> Verification succeeded: backup decrypts correctly." - else - echo "!! WARNING: decrypted content does not match original. Investigate before trusting this backup." >&2 - exit 1 - fi - else - echo "!! WARNING: decryption test failed." >&2 - exit 1 - fi - - echo - echo "==> Done." - echo " Encrypted backup: $outfile" - echo " Store this file somewhere safe (offline media, encrypted drive)." - echo " The S2K iteration count only helps if your passphrase itself" - echo " has real entropy (e.g. a long diceware passphrase)." -} - -do_import() { - local infile="$1" - - if [[ ! -f "$infile" ]]; then - echo "!! File not found: $infile" >&2 - exit 1 - fi - - echo "==> Decrypting $infile ..." - echo " You will be prompted for the backup's passphrase." - echo " Note: this may take a while due to the high S2K iteration count." - gpg --decrypt "$infile" > "$WORKDIR/gpg-full-backup.tar" - - echo "==> Extracting archive..." - tar -C "$WORKDIR" -xf "$WORKDIR/gpg-full-backup.tar" - - echo "==> Importing public keys..." - gpg --import "$WORKDIR/public-keys.asc" - - echo "==> Importing secret keys..." - gpg --import "$WORKDIR/secret-keys.asc" - - if [[ -s "$WORKDIR/secret-subkeys.asc" ]]; then - echo "==> Importing secret subkeys..." - gpg --import "$WORKDIR/secret-subkeys.asc" || true - fi - - if [[ -f "$WORKDIR/ownertrust.txt" ]]; then - echo "==> Importing owner trust database..." - gpg --import-ownertrust "$WORKDIR/ownertrust.txt" - fi - - if [[ -d "$WORKDIR/revocation-certs" ]] && [[ -n "$(ls -A "$WORKDIR/revocation-certs" 2>/dev/null)" ]]; then - echo "==> Restoring revocation certificates..." - mkdir -p "$HOME/.gnupg/openpgp-revocs.d" - cp "$WORKDIR"/revocation-certs/*.rev "$HOME/.gnupg/openpgp-revocs.d/" 2>/dev/null || true - fi - - echo - echo "==> Done. Keys imported into your GPG keyring." - echo " Run 'gpg --list-secret-keys' to confirm." -} - -# Main - -if [[ $# -ne 2 ]]; then - usage -fi - -command="$1" -filename="$2" - -case "$command" in - export) - do_export "$filename" - ;; - import) - do_import "$filename" - ;; - *) - usage - ;; -esac |
