#------------------------------------------------------------------------------
# $File: pgp,v 1.11 2014/11/11 21:32:38 christos Exp $
# pgp: file(1) magic for Pretty Good Privacy
# see http://lists.gnupg.org/pipermail/gnupg-devel/1999-September/016052.html
#
0 beshort 0x9900 PGP key public ring
!:mime application/x-pgp-keyring
0 beshort 0x9501 PGP key security ring
!:mime application/x-pgp-keyring
0 beshort 0x9500 PGP key security ring
!:mime application/x-pgp-keyring
0 beshort 0xa600 PGP encrypted data
#!:mime application/pgp-encrypted
#0 string -----BEGIN\040PGP text/PGP armored data
!:mime text/PGP # encoding: armored data
#>15 string PUBLIC\040KEY\040BLOCK- public key block
#>15 string MESSAGE- message
#>15 string SIGNED\040MESSAGE- signed message
#>15 string PGP\040SIGNATURE- signature
2 string ---BEGIN\ PGP\ PUBLIC\ KEY\ BLOCK- PGP public key block
!:mime application/pgp-keys
>10 search/100 \n\n
>>&0 use pgp
0 string -----BEGIN\040PGP\40MESSAGE- PGP message
!:mime application/pgp
>10 search/100 \n\n
>>&0 use pgp
0 string -----BEGIN\040PGP\40SIGNATURE- PGP signature
!:mime application/pgp-signature
>10 search/100 \n\n
>>&0 use pgp
# Decode the type of the packet based on it's base64 encoding.
# Idea from Mark Martinec
# The specification is in RFC 4880, section 4.2 and 4.3:
# http://tools.ietf.org/html/rfc4880#section-4.2
0 name pgp
>0 byte 0x67 Reserved (old)
>0 byte 0x68 Public-Key Encrypted Session Key (old)
>0 byte 0x69 Signature (old)
>0 byte 0x6a Symmetric-Key Encrypted Session Key (old)
>0 byte 0x6b One-Pass Signature (old)
>0 byte 0x6c Secret-Key (old)
>0 byte 0x6d Public-Key (old)
>0 byte 0x6e Secret-Subkey (old)
>0 byte 0x6f Compressed Data (old)
>0 byte 0x70 Symmetrically Encrypted Data (old)
>0 byte 0x71 Marker (old)
>0 byte 0x72 Literal Data (old)
>0 byte 0x73 Trust (old)
>0 byte 0x74 User ID (old)
>0 byte 0x75 Public-Subkey (old)
>0 byte 0x76 Unused (old)
>0 byte 0x77
>>1 byte&0xc0 0x00 Reserved
>>1 byte&0xc0 0x40 Public-Key Encrypted Session Key
>>1 byte&0xc0 0x80 Signature
>>1 byte&0xc0 0xc0 Symmetric-Key Encrypted Session Key
>0 byte 0x78
>>1 byte&0xc0 0x00 One-Pass Signature
>>1 byte&0xc0 0x40 Secret-Key
>>1 byte&0xc0 0x80 Public-Key
>>1 byte&0xc0 0xc0 Secret-Subkey
>0 byte 0x79
>>1 byte&0xc0 0x00 Compressed Data
>>1 byte&0xc0 0x40 Symmetrically Encrypted Data
>>1 byte&0xc0 0x80 Marker
>>1 byte&0xc0 0xc0 Literal Data
>0 byte 0x7a
>>1 byte&0xc0 0x00 Trust
>>1 byte&0xc0 0x40 User ID
>>1 byte&0xc0 0x80 Public-Subkey
>>1 byte&0xc0 0xc0 Unused [z%x]
>0 byte 0x30
>>1 byte&0xc0 0x00 Unused [0%x]
>>1 byte&0xc0 0x40 User Attribute
>>1 byte&0xc0 0x80 Sym. Encrypted and Integrity Protected Data
>>1 byte&0xc0 0xc0 Modification Detection Code
# magic signatures to detect PGP crypto material (from stef)
# detects and extracts metadata from:
# - symmetric encrypted packet header
# - RSA (e=65537) secret (sub-)keys
# 1024b RSA encrypted data
0 string \x84\x8c\x03 PGP RSA encrypted session key -
>3 lelong x keyid: %X
>7 lelong x %X
>11 byte 0x01 RSA (Encrypt or Sign) 1024b
>11 byte 0x02 RSA Encrypt-Only 1024b
>12 string \x04\x00
>12 string \x03\xff
>12 string \x03\xfe
>12 string \x03\xfd
>12 string \x03\xfc
>12 string \x03\xfb
>12 string \x03\xfa
>12 string \x03\xf9
>142 byte 0xd2 .
# 2048b RSA encrypted data
0 string \x85\x01\x0c\x03 PGP RSA encrypted session key -
>4 lelong x keyid: %X
>8 lelong x %X
>12 byte 0x01 RSA (Encrypt or Sign) 2048b
>12 byte 0x02 RSA Encrypt-Only 2048b
>13 string \x08\x00
>13 string \x07\xff
>13 string \x07\xfe
>13 string \x07\xfd
>13 string \x07\xfc
>13 string \x07\xfb
>13 string \x07\xfa
>13 string \x07\xf9
>271 byte 0xd2 .
# 3072b RSA encrypted data
0 string \x85\x01\x8c\x03 PGP RSA encrypted session key -
>4 lelong x keyid: %X
>8 lelong x %X
>12 byte 0x01 RSA (Encrypt or Sign) 3072b
>12 byte 0x02 RSA Encrypt-Only 3072b
>13 string \x0c\x00
>13 string \x0b\xff
>13 string \x0b\xfe
>13 string \x0b\xfd
>13 string \x0b\xfc
>13 string \x0b\xfb
>13 string \x0b\xfa
>13 string \x0b\xf9
>399 byte 0xd2 .
# 3072b RSA encrypted data
0 string \x85\x02\x0c\x03 PGP RSA encrypted session key -
>4 lelong x keyid: %X
>8 lelong x %X
>12 byte 0x01 RSA (Encrypt or Sign) 4096b
>12 byte 0x02 RSA Encrypt-Only 4096b
>13 string \x10\x00
>13 string \x0f\xff
>13 string \x0f\xfe
>13 string \x0f\xfd
>13 string \x0f\xfc
>13 string \x0f\xfb
>13 string \x0f\xfa
>13 string \x0f\xf9
>527 byte 0xd2 .
# 4096b RSA encrypted data
0 string \x85\x04\x0c\x03 PGP RSA encrypted session key -
>4 lelong x keyid: %X
>8 lelong x %X
>12 byte 0x01 RSA (Encrypt or Sign) 8129b
>12 byte 0x02 RSA Encrypt-Only 8129b
>13 string \x20\x00
>13 string \x1f\xff
>13 string \x1f\xfe
>13 string \x1f\xfd
>13 string \x1f\xfc
>13 string \x1f\xfb
>13 string \x1f\xfa
>13 string \x1f\xf9
>1039 byte 0xd2 .
# crypto algo mapper
0 name crypto
>0 byte 0x00 Plaintext or unencrypted data
>0 byte 0x01 IDEA
>0 byte 0x02 TripleDES
>0 byte 0x03 CAST5 (128 bit key)
>0 byte 0x04 Blowfish (128 bit key, 16 rounds)
>0 byte 0x07 AES with 128-bit key
>0 byte 0x08 AES with 192-bit key
>0 byte 0x09 AES with 256-bit key
>0 byte 0x0a Twofish with 256-bit key
# hash algo mapper
0 name hash
>0 byte 0x01 MD5
>0 byte 0x02 SHA-1
>0 byte 0x03 RIPE-MD/160
>0 byte 0x08 SHA256
>0 byte 0x09 SHA384
>0 byte 0x0a SHA512
>0 byte 0x0b SHA224
# pgp symmetric encrypted data
0 byte 0x8c PGP symmetric key encrypted data -
>1 byte 0x0d
>1 byte 0x0c
>2 byte 0x04
>3 use crypto
>4 byte 0x01 salted -
>>5 use hash
>>14 byte 0xd2 .
>>14 byte 0xc9 .
>4 byte 0x03 salted & iterated -
>>5 use hash
>>15 byte 0xd2 .
>>15 byte 0xc9 .
# encrypted keymaterial needs s2k & can be checksummed/hashed
0 name chkcrypto
>0 use crypto
>1 byte 0x00 Simple S2K
>1 byte 0x01 Salted S2K
>1 byte 0x03 Salted&Iterated S2K
>2 use hash
# all PGP keys start with this prolog
# containing version, creation date, and purpose
0 name keyprolog
>0 byte 0x04
>1 beldate x created on %s -
>5 byte 0x01 RSA (Encrypt or Sign)
>5 byte 0x02 RSA Encrypt-Only
# end of secret keys known signature
# contains e=65537 and the prolog to
# the encrypted parameters
0 name keyend
>0 string \x00\x11\x01\x00\x01 e=65537
>5 use crypto
>5 byte 0xff checksummed
>>6 use chkcrypto
>5 byte 0xfe hashed
>>6 use chkcrypto
# PGP secret keys contain also the public parts
# these vary by bitsize of the key
0 name x1024
>0 use keyprolog
>6 string \x03\xfe
>6 string \x03\xff
>6 string \x04\x00
>136 use keyend
0 name x2048
>0 use keyprolog
>6 string \x80\x00
>6 string \x07\xfe
>6 string \x07\xff
>264 use keyend
0 name x3072
>0 use keyprolog
>6 string \x0b\xfe
>6 string \x0b\xff
>6 string \x0c\x00
>392 use keyend
0 name x4096
>0 use keyprolog
>6 string \x10\x00
>6 string \x0f\xfe
>6 string \x0f\xff
>520 use keyend
# \x00|\x1f[\xfe\xff]).{1024})'
0 name x8192
>0 use keyprolog
>6 string \x20\x00
>6 string \x1f\xfe
>6 string \x1f\xff
>1032 use keyend
# depending on the size of the pkt
# we branch into the proper key size
# signatures defined as x{keysize}
>0 name pgpkey
>0 string \x01\xd8 1024b
>>2 use x1024
>0 string \x01\xeb 1024b
>>2 use x1024
>0 string \x01\xfb 1024b
>>2 use x1024
>0 string \x01\xfd 1024b
>>2 use x1024
>0 string \x01\xf3 1024b
>>2 use x1024
>0 string \x01\xee 1024b
>>2 use x1024
>0 string \x01\xfe 1024b
>>2 use x1024
>0 string \x01\xf4 1024b
>>2 use x1024
>0 string \x02\x0d 1024b
>>2 use x1024
>0 string \x02\x03 1024b
>>2 use x1024
>0 string \x02\x05 1024b
>>2 use x1024
>0 string \x02\x15 1024b
>>2 use x1024
>0 string \x02\x00 1024b
>>2 use x1024
>0 string \x02\x10 1024b
>>2 use x1024
>0 string \x02\x04 1024b
>>2 use x1024
>0 string \x02\x06 1024b
>>2 use x1024
>0 string \x02\x16 1024b
>>2 use x1024
>0 string \x03\x98 2048b
>>2 use x2048
>0 string \x03\xab 2048b
>>2 use x2048
>0 string \x03\xbb 2048b
>>2 use x2048
>0 string \x03\xbd 2048b
>>2 use x2048
>0 string \x03\xcd 2048b
>>2 use x2048
>0 string \x03\xb3 2048b
>>2 use x2048
>0 string \x03\xc3 2048b
>>2 use x2048
>0 string \x03\xc5 2048b
>>2 use x2048
>0 string \x03\xd5 2048b
>>2 use x2048
>0 string \x03\xae 2048b
>>2 use x2048
>0 string \x03\xbe 2048b
>>2 use x2048
>0 string \x03\xc0 2048b
>>2 use x2048
>0 string \x03\xd0 2048b
>>2 use x2048
>0 string \x03\xb4 2048b
>>2 use x2048
>0 string \x03\xc4 2048b
>>2 use x2048
>0 string \x03\xc6 2048b
>>2 use x2048
>0 string \x03\xd6 2048b
>>2 use x2048
>0 string \x05X 3072b
>>2 use x3072
>0 string \x05k 3072b
>>2 use x3072
>0 string \x05{ 3072b
>>2 use x3072
>0 string \x05} 3072b
>>2 use x3072
>0 string \x05\x8d 3072b
>>2 use x3072
>0 string \x05s 3072b
>>2 use x3072
>0 string \x05\x83 3072b
>>2 use x3072
>0 string \x05\x85 3072b
>>2 use x3072
>0 string \x05\x95 3072b
>>2 use x3072
>0 string \x05n 3072b
>>2 use x3072
>0 string \x05\x7e 3072b
>>2 use x3072
>0 string \x05\x80 3072b
>>2 use x3072
>0 string \x05\x90 3072b
>>2 use x3072
>0 string \x05t 3072b
>>2 use x3072
>0 string \x05\x84 3072b
>>2 use x3072
>0 string \x05\x86 3072b
>>2 use x3072
>0 string \x05\x96 3072b
>>2 use x3072
>0 string \x07[ 4096b
>>2 use x4096
>0 string \x07\x18 4096b
>>2 use x4096
>0 string \x07+ 4096b
>>2 use x4096
>0 string \x07; 4096b
>>2 use x4096
>0 string \x07= 4096b
>>2 use x4096
>0 string \x07M 4096b
>>2 use x4096
>0 string \x073 4096b
>>2 use x4096
>0 string \x07C 4096b
>>2 use x4096
>0 string \x07E 4096b
>>2 use x4096
>0 string \x07U 4096b
>>2 use x4096
>0 string \x07. 4096b
>>2 use x4096
>0 string \x07> 4096b
>>2 use x4096
>0 string \x07@ 4096b
>>2 use x4096
>0 string \x07P 4096b
>>2 use x4096
>0 string \x074 4096b
>>2 use x4096
>0 string \x07D 4096b
>>2 use x4096
>0 string \x07F 4096b
>>2 use x4096
>0 string \x07V 4096b
>>2 use x4096
>0 string \x0e[ 8192b
>>2 use x8192
>0 string \x0e\x18 8192b
>>2 use x8192
>0 string \x0e+ 8192b
>>2 use x8192
>0 string \x0e; 8192b
>>2 use x8192
>0 string \x0e= 8192b
>>2 use x8192
>0 string \x0eM 8192b
>>2 use x8192
>0 string \x0e3 8192b
>>2 use x8192
>0 string \x0eC 8192b
>>2 use x8192
>0 string \x0eE 8192b
>>2 use x8192
>0 string \x0eU 8192b
>>2 use x8192
>0 string \x0e. 8192b
>>2 use x8192
>0 string \x0e> 8192b
>>2 use x8192
>0 string \x0e@ 8192b
>>2 use x8192
>0 string \x0eP 8192b
>>2 use x8192
>0 string \x0e4 8192b
>>2 use x8192
>0 string \x0eD 8192b
>>2 use x8192
>0 string \x0eF 8192b
>>2 use x8192
>0 string \x0eV 8192b
>>2 use x8192
# PGP RSA (e=65537) secret (sub-)key header
0 byte 0x95 PGP Secret Key -
>1 use pgpkey
0 byte 0x97 PGP Secret Sub-key -
>1 use pgpkey
0 byte 0x9d PGP Secret Sub-key -
>1 use pgpkey