~shulhan/gotp

Command line interface for Time-based One Time Password (TOTP)

7a0dbe1 all: comply with linter recommendations

~shulhan pushed to ~shulhan/gotp git

19 days ago

7a0dbe1 all: comply with linter recommendations

~shulhan pushed to ~shulhan/gotp git

19 days ago

#gotp

A command line interface to manage and generate Time-based One Time Password (TOTP).

#SYNOPSIS

gotp <command> <parameters...>

#COMMANDS

This section describe available command and its usage.

add <LABEL> <HASH>:<BASE32-SECRET>[:DIGITS][:TIME-STEP][:ISSUER]

Add a TOTP secret identified by unique LABEL. HASH is one of the valid hash function: SHA1, SHA256, or SHA512. BASE32-SECRET is the secret to generate one-time password encoded in base32. The DIGITS field is optional, define the number digits generated for password, default to 6. The TIME-STEP field is optional, its define the interval in seconds, default to 30 seconds. The ISSUER field is also optional, its define the name of provider that generate the secret.

gen <LABEL> [N]

Generate N number passwords using the secret identified by LABEL.

get <LABEL>

Get and print the issuer by its LABEL. This will print the issuer secret, unencrypted.

import <PROVIDER> <FILE>

Import the TOTP configuration from other provider. Currently, the only supported PROVIDER is Aegis and the supported file is .txt.

list

List all labels stored in the configuration.

remove <LABEL>

Remove LABEL from configuration.

remove-private-key

Decrypt the issuer's value (hash:secret...) using current private key and store it back to file as plain text. The current private key will be removed from gotp directory.

rename <LABEL> <NEW-LABEL>

Rename a LABEL into NEW-LABEL.

set-private-key <PRIVATE-KEY-FILE>

Encrypt the issuer's value (hash:secret...) in the file using private key. The supported private key is RSA. Once completed, the PRIVATE-KEY-FILE will be copied to default user's gotp directory, "$XDG_CONFIG_DIR/gotp/gotp.key".

#ENCRYPTION

On the first run, the gotp command check for private key in the user's configuration direction (see the private key location in FILES section).

The private key must be RSA based.

If the private key exist, all the OTP values (excluding the label) will be stored as encrypted.

If the private key is not exist, the OTP configuration will be stored as plain text.

#FILES

$XDG_CONFIG_DIR/gotp:: Path to user's gotp directory.

$XDG_CONFIG_DIR/gotp/gotp.conf:: File where the configuration and secret are stored.

$XDG_CONFIG_DIR/gotp/gotp.key:: Private key file to encrypt and decrypt the issuer.

For Darwin/macOS the "$XDG_CONFIG_DIR" is equal to "$HOME/Library", for Windows its equal to "%AppData%".

#EXAMPLES

This section show examples on how to use gotp cli.

Add "my-totp" to configuration using SHA1 as hash function, "GEZDGNBVGY3TQOJQ" as the secret, with 6 digits passwords, and 30 seconds as time step.

$ gotp add my-totp SHA1:GEZDGNBVGY3TQOJQ:6:30

Generate 3 recent passwords from "my-totp",

$ gotp gen my-totp 3
gotp: reading configuration from /home/$USER/.config/gotp/gotp.conf
847945
326823
767317

Import the exported Aegis TOTP from file,

$ gotp import aegis aegis-export-uri.txt
gotp: reading configuration from /home/$USER/.config/gotp/gotp.conf
OK

List all labels stored in the configuration,

$ gotp list
gotp: reading configuration from /home/$USER/.config/gotp/gotp.conf
my-totp

Remove a label "my-totp",

$ gotp remove my-totp
gotp: reading configuration from /home/$USER/.config/gotp/gotp.conf
OK

Rename a label "my-totp" to "my-otp",

$ gotp rename my-totp my-otp
gotp: reading configuration from /home/$USER/.config/gotp/gotp.conf
OK