Andy Dixon
ec204f0ea2
Filesystem basics: mv now moves folders as well as files, and like mv(1) a NEW ending in / or naming an existing folder means into it. cp copies a file, or a folder with -r, by writing new records that share the original's objects, so it is instant and takes no space; rm already keeps objects another record still uses. New records go first, so an interrupted move leaves both names, never neither. get -r extracts a folder, keeping its structure. vault unlock [--for 5m] checks the passphrase and starts the binary again as a hidden __agent process, handing it the suite ID and seed over a pipe. The agent keeps them in mlocked memory, with core dumps off and (on Linux) PR_SET_DUMPABLE cleared, serves them on a Unix socket in a 0700 per-user directory whose owner is checked on every use, and wipes them and exits at a hard deadline or on vault lock. Commands ask it first unless VAULT_PASSPHRASE is set, and genkey stops any agent left for that path. Guide, man pages (new vault-cp, vault-unlock, vault-lock), README and screenshots updated; the guide's error table is split so it fits.
127 lines
3.1 KiB
Groff
127 lines
3.1 KiB
Groff
.TH VAULT 1 "September 2026" "vault" "User Commands"
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.SH NAME
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vault \- post-quantum encrypted file vault
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.SH SYNOPSIS
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.B vault
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.I command
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.RI [ options ]
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.RI [ arguments ]
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.SH DESCRIPTION
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.B vault
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stores files in a directory of encrypted, fixed-size records and chunks.
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Encryption is a hybrid of FrodoKEM-640 and ML-KEM-768 with ChaCha20-Poly1305.
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The key file is protected by an Argon2id-derived passphrase key.
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File names, sizes and contents are only visible to a holder of the key and
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passphrase. Ciphertext sizes and timestamps are normalised to hide
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metadata from the storage host.
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.PP
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Options may appear before, between or after the arguments.
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.SH COMMANDS
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.TP
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.BR vault\-genkey (1)
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Create a new passphrase-protected key file.
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.TP
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.BR vault\-init (1)
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Create a new, empty vault.
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.TP
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.BR vault\-add (1)
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Encrypt a file, directory or downloaded URL into the vault.
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.TP
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.BR vault\-migrate (1)
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Like add, then delete each original.
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.TP
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.BR vault\-mirror (1)
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Crawl a website into the vault.
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.TP
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.BR vault\-absorb (1)
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Add every file in a tar archive read from standard input.
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.TP
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.BR vault\-list (1)
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.B ls
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lists one folder, with sub-folders marked;
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.B list
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lists every file under a folder.
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.TP
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.BR vault\-get (1)
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Decrypt a stored file, or a whole folder with
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.BR \-r .
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.TP
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.BR vault\-mv (1)
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Rename or move a stored file or folder (alias:
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.BR rename ).
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.TP
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.BR vault\-cp (1)
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Copy a stored file, or a whole folder with
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.BR \-r .
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.TP
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.BR vault\-rm (1)
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Delete a stored file, or a whole folder with
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.B \-r
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(alias:
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.BR delete ).
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.TP
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.BR vault\-unlock (1)
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Remember the unlocked key for a while (default 5 minutes), so commands
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skip the passphrase.
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.TP
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.BR vault\-lock (1)
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Forget it now.
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.TP
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.B help
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Print usage.
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.SH OPTIONS
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These apply to every command.
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.TP
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.BI \-\-key " PATH"
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Key file. Default: $VAULT_KEY, else ~/.vault/key.
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.TP
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.BI \-\-vault " DIR"
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Vault directory. Default: $VAULT_DIR, else ~/.vault/store.
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.SH ENVIRONMENT
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.TP
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.B VAULT_KEY
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Default key file.
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.TP
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.B VAULT_DIR
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Default vault directory.
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.TP
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.B VAULT_PASSPHRASE
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Passphrase, instead of prompting on the terminal or using a key remembered by
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.BR vault\-unlock (1).
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.TP
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.B VAULT_DECOY_PASSPHRASE
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Decoy passphrase used by
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.BR "vault genkey" .
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.SH LOCKING
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Commands that change the vault hold an exclusive lock on
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.IR DIR/.lock ;
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readers hold a shared lock. The lock is taken after the passphrase prompt.
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.SH DECOY PASSPHRASE
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.B genkey
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can add a second passphrase. It unlocks a separate identity, so every
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command run with it sees and changes only the decoy files, and the real
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files stay invisible. The key file does not reveal whether a decoy exists,
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and
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.B init
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fills each vault with unreadable filler, so hidden files look like filler to
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anyone holding only the decoy passphrase.
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.SH EXIT STATUS
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0 on success; 1 on error (diagnostics on standard error); 2 when run with no command.
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.SH EXAMPLES
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.nf
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vault genkey
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vault init \-\-filler 500M
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vault add report.pdf work/2026
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vault list work
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vault get work/2026/report.pdf \-o /tmp/report.pdf
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.fi
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.SH FILES
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.TP
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.I ~/.vault/key
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Default key file.
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.TP
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.I ~/.vault/store
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Default vault directory.
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.SH AUTHOR
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Andy Dixon <vault@dixon.cx>, https://www.dixon.cx
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