gpgpdump - OpenPGP packet visualizer
gpgpdump is a OpenPGP (RFC 4880) packet visualizer by golang.
- Command-line interface, based on pgpdump design by kazu-yamamoto.
- Output with plain text or JSON-formatted text
- Support RFC 5581 and RFC 6637
- Support a part of RFC 4880bis
This package is required Go 1.16 or later.
Migrated repository to github.com/goark/gpgpdump
$ go install github.com/goark/gpgpdump@latest
See latest release.
$ gpgpdump -h
OpenPGP (RFC 4880) packet visualizer by golang.
Usage:
gpgpdump [flags]
gpgpdump [command]
Available Commands:
completion Generate completion script
fetch Dumps OpenPGP packets form the Web
github Dumps OpenPGP keys registered on GitHub
help Help about any command
hkp Dumps OpenPGP packets from the key server
version Print the version number
Flags:
-a, --armor accepts ASCII armor text only
-c, --cert dumps attested certification in signature packets (tag 2)
--clipboard input from clipboard (ASCII armor text only)
--debug for debug
-f, --file string path of OpenPGP file
-h, --help help for gpgpdump
--indent int indent size for output text
-i, --int dumps multi-precision integers
-j, --json output with JSON format
-l, --literal dumps literal packets (tag 11)
-m, --marker dumps marker packets (tag 10)
-p, --private dumps private packets (tag 60-63)
-u, --utc output with UTC time
-v, --version output version of gpgpdump
Use "gpgpdump [command] --help" for more information about a command.
$ cat testdata/eccsig.asc | gpgpdump -u --indent 2
Signature Packet (tag 2) (94 bytes)
Version: 4 (current)
Signiture Type: Signature of a canonical text document (0x01)
Public-key Algorithm: ECDSA public key algorithm (pub 19)
Hash Algorithm: SHA2-256 (hash 8)
Hashed Subpacket (6 bytes)
Signature Creation Time (sub 2): 2015-01-24T02:52:15Z
Unhashed Subpacket (10 bytes)
Issuer (sub 16): 0x31fbfda95fbbfa18
Hash left 2 bytes
36 1f
ECDSA value r (256 bits)
ECDSA value s (252 bits)
$ cat testdata/eccsig.asc | gpgpdump -j -u | jq .
{
"Packet": [
{
"name": "Signature Packet (tag 2)",
"note": "94 bytes",
"Item": [
{
"name": "Version",
"value": "4",
"note": "current"
},
{
"name": "Signiture Type",
"value": "Signature of a canonical text document (0x01)"
},
{
"name": "Public-key Algorithm",
"value": "ECDSA public key algorithm (pub 19)"
},
{
"name": "Hash Algorithm",
"value": "SHA2-256 (hash 8)"
},
{
"name": "Hashed Subpacket",
"note": "6 bytes",
"Item": [
{
"name": "Signature Creation Time (sub 2)",
"value": "2015-01-24T02:52:15Z"
}
]
},
{
"name": "Unhashed Subpacket",
"note": "10 bytes",
"Item": [
{
"name": "Issuer (sub 16)",
"value": "0x31fbfda95fbbfa18"
}
]
},
{
"name": "Hash left 2 bytes",
"dump": "36 1f"
},
{
"name": "ECDSA value r",
"note": "256 bits"
},
{
"name": "ECDSA value s",
"note": "252 bits"
}
]
}
]
}
$ gpgpdump hkp -h
Dumps OpenPGP packets from the key server.
Usage:
gpgpdump hkp [flags] {userID | keyID}
Aliases:
hkp, h
Flags:
-h, --help help for hkp
--keyserver string OpenPGP key server (default "keys.gnupg.net")
--port int port number of OpenPGP key server (default 11371)
--raw output raw text from OpenPGP key server
--secure enable HKP over HTTPS
Global Flags:
-a, --armor accepts ASCII armor text only
-c, --cert dumps attested certification in signature packets (tag 2)
--debug for debug
--indent int indent size for output text
-i, --int dumps multi-precision integers
-j, --json output with JSON format
-l, --literal dumps literal packets (tag 11)
-m, --marker dumps marker packets (tag 10)
-p, --private dumps private packets (tag 60-63)
-u, --utc output with UTC time
$ gpgpdump hkp -u --indent 2 0x44ce6900e2b307a4
Public-Key Packet (tag 6) (269 bytes)
Version: 4 (current)
Public key creation time: 2009-11-08T15:20:55Z
Public-key Algorithm: RSA (Encrypt or Sign) (pub 1)
RSA public modulus n (2048 bits)
RSA public encryption exponent e (17 bits)
...
$ gpgpdump github -h
Dumps OpenPGP keys registered on GitHub.
Usage:
gpgpdump github [flags] GitHubUserID
Aliases:
github, gh, g
Flags:
-h, --help help for github
--keyid string OpenPGP key ID
--raw output raw text (ASCII armor text)
Global Flags:
-a, --armor accepts ASCII armor text only
-c, --cert dumps attested certification in signature packets (tag 2)
--debug for debug
--indent int indent size for output text
-i, --int dumps multi-precision integers
-j, --json output with JSON format
-l, --literal dumps literal packets (tag 11)
-m, --marker dumps marker packets (tag 10)
-p, --private dumps private packets (tag 60-63)
-u, --utc output with UTC time
$ gpgpdump github spiegel-im-spiegel --keyid 0x3b460ba9a59048c9 -u --indent 2
Public-Key Packet (tag 6) (51 bytes)
Version: 4 (current)
Public key creation time: 2020-10-27T06:20:19Z
Public-key Algorithm: EdDSA (pub 22)
ECC Curve OID: ed25519 (256bits key size)
2b 06 01 04 01 da 47 0f 01
EdDSA EC point (Native point format of the curve follows) (263 bits)
...
$ gpgpdump fetch -h
Dumps OpenPGP packets form the Web.
Usage:
gpgpdump fetch [flags] URL
Aliases:
fetch, fch, f
Flags:
-h, --help help for fetch
--raw output raw data
Global Flags:
-a, --armor accepts ASCII armor text only
-c, --cert dumps attested certification in signature packets (tag 2)
--debug for debug
--indent int indent size for output text
-i, --int dumps multi-precision integers
-j, --json output with JSON format
-l, --literal dumps literal packets (tag 11)
-m, --marker dumps marker packets (tag 10)
-p, --private dumps private packets (tag 60-63)
-u, --utc output with UTC time
$ gpgpdump fetch https://github.com/spiegel-im-spiegel.gpg -u --indent 2
Public-Key Packet (tag 6) (1198 bytes)
Version: 4 (current)
Public key creation time: 2013-04-28T10:29:43Z
Public-key Algorithm: DSA (Digital Signature Algorithm) (pub 17)
DSA p (3072 bits)
DSA q (q is a prime divisor of p-1) (256 bits)
DSA g (3070 bits)
DSA y (= g^x mod p where x is secret) (3067 bits)
...
Help for “gpgpdump completion -h”
$ source <(gpgpdump completion bash)
or
$ gpgpdump completion bash > /etc/bash_completion.d/gpgpdump
$ gpgpdump completion zsh > "${fpath[1]}/_gpgpdump"
$ gpgpdump completion fish > ~/.config/fish/completions/gpgpdump.fish
PS> gpgpdump completion powershell | Out-String | Invoke-Expression
