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PGP - Keys with the same key IDs

A survey of 2002-02-01

Using 32 Bit key ID

The list of keyID's which occure multiple time in the keyring from the CH-Keyserver by July, 9th, 1999:

Using 64 Bit key ID

In the Keyring of the July, 9th, 1999 from the CH-Keyserver there are three 64 Bit keyID's which occure twice:

0xCFA87201 Kathy Kimball <krk5@psu.edu> key1.pgp
f16 Fingerprint16 = 01 06 05 9B 05 95 EA 69 08 F2 45 C0 EC A2 C6 12
0xCFA87201 Kathy Kimball <krk5@psu.edu> key2.pgp
f16 Fingerprint16 = 45 A9 B6 DE F7 37 5B DF E7 D3 E2 82 E6 56 89 73
0xDE0E525D Franco Visentin <Franco.Visentin@italtel.it> key3.pgp
f16 Fingerprint16 = 65 F6 B5 35 C6 BB D6 0C 95 52 D7 43 99 D5 B9 C6
0xDE0E525D Franco Visentin <Franco.Visentin@italtel.it> key4.pgp
f16 Fingerprint16 = EE 25 51 EA C1 C0 E6 3C 71 FC 6B A6 E1 23 92 A4
0xE879DAF5 emmanuel@well.sf.ca.us key5.pgp
f16 Fingerprint16 = 76 A0 59 B2 E1 2F 32 D8 69 B8 DA CB 0D 26 1E 98
0xE879DAF5 ummanuul@well.sf.ca.us key6.pgp
f16 Fingerprint16 = 49 8E 28 F3 9A 8C F5 C4 35 1B 09 53 B6 1B 57 B5

Comments to the keys:

Has valid signatures but differs from key 2. A keydump of key1
PGP 5.0 for Unix does not recoginize the corrupt signatures. PGP 5.5 and PGP 6.02 for Windows recognize the signatures as corrupt signatures. But they refuse loading the correct key if the corrupt key exists in the keyring. A keydump of key2
No valid signatures
ok
bad signature
no self signature, but signature is ok.

The output of pgp50 -c (Unix):

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  1024 CFA87201 1996-01-15 ---------- RSA             Sign and Encrypt
uid  Kathy Kimball <krk5@psu.edu>
sig?      8E0A49D1 1996-08-14   (Unknown signator, can't be checked)
sig?      8E0D49D1 1996-08-14   (Unknown signator, can't be checked)
sig!      6226DBB9 1996-08-20 Krzysztof Silicki.new <krzysiek@nask.pl>
sig?      9B1EF129 1997-10-17   (Unknown signator, can't be checked)
sig?      1A27100D 1996-01-17   (Unknown signator, can't be checked)
sig!      85CFC641 1996-08-15 Pete Hammes <pch@serc.saic.com>
sig?      904935E9 1997-10-15   (Unknown signator, can't be checked)
sig?      FEF4A7ED 1996-08-01   (Unknown signator, can't be checked)
sig!      18323349 1996-04-23 Stephen E. Hansen <sehansen@stanford.edu>
sig!      E334FE61 1996-08-28 Simon Shickman <simon@horizon.cc.huji.ac.il>
sig?      2011B879 1997-10-17   (Unknown signator, can't be checked)
sig?      A69D7979 1996-09-05   (Unknown signator, can't be checked)
sig?      3ACE55FE 1997-10-17   (Unknown signator, can't be checked)
sig?      EE26E805 1996-01-23   (Unknown signator, can't be checked)
sig!      93085CC9 1996-08-19 Andrzej Chrzaszcz.new <andrzej@nask.pl>
sig?      270076FD 1997-10-17   (Unknown signator, can't be checked)
sig!      7F82BE71 1996-09-04 Jorgen Bo Madsen <Jorgen.Bo.Madsen@uni-c.dk>
sig!      20E76E5D 1996-04-23 Steven M. Romig <romig@net.ohio-state.edu>
sig!      FF23FE6D 1996-09-04 UNI-CERT <cert@uni-c.dk>
sig?      F5123899 1996-01-23   (Unknown signator, can't be checked)
sig!      6E8F3D55 1996-08-15 REACT <react@cip.saic.com>
sig!      A0585305 1996-09-04 NORDUnet CERT <cert@nordu.net>
sig!      F6539285 1996-09-05 Martin Bech <Martin.Bech@uni-c.dk>
sig?      3D52E07F 1997-10-17   (Unknown signator, can't be checked)
sig?      E35FCCFD 1996-09-05   (Unknown signator, can't be checked)
sig?      2F8D5039 1996-09-02   (Unknown signator, can't be checked)
sig?      FC0C02D5 1997-07-28   (Unknown signator, can't be checked)
sig!      D6DC8A3D 1996-07-02 ASSIST Team <assist@assist.mil>
sig!      8B05342D 1996-10-04 Graham King <GrahamK@trio.demon.co.uk>
sig?      3F0D98DD 1996-09-09   (Unknown signator, can't be checked)
sig?      16B6FC9D 1996-08-15   (Unknown signator, can't be checked)
sig?      A326CF89 1996-01-24   (Unknown signator, can't be checked)
sig!      6941BB25 1996-08-19 CERT-NASK.1024 <cert@nask.pl>
sig!      9E1A53A5 1996-08-01 Robert K. Foertsch <foertsch@uiuc.edu>
sig!      CFA87201 1996-01-22 Kathy Kimball <krk5@psu.edu>
sig?      04D72CB9 1998-05-21   (Unknown signator, can't be checked)
sig?      8CE8B693 1998-08-21   (Unknown signator, can't be checked)
sig?      C5396557 1998-08-21   (Unknown signator, can't be checked)
sig?      B63CE851 1998-08-21   (Unknown signator, can't be checked)
sig?      82F26C13 1998-08-21   (Unknown signator, can't be checked)
sig?      78291BD8 1998-05-21   (Unknown signator, can't be checked)

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  1024 CFA87201 1996-01-15 ---------- RSA             Sign and Encrypt
uid  Kathy Kimball <krk5@psu.edu>
sig?      8E0A49D1 1996-08-14   (Unknown signator, can't be checked)
sig?      8E0D49D1 1996-08-14   (Unknown signator, can't be checked)
sig!      6226DBB9 1996-08-20 Krzysztof Silicki.new <krzysiek@nask.pl>
sig?      9B1EF129 1997-10-17   (Unknown signator, can't be checked)
sig?      1A27100D 1996-01-17   (Unknown signator, can't be checked)
sig!      85CFC641 1996-08-15 Pete Hammes <pch@serc.saic.com>
sig?      904935E9 1997-10-15   (Unknown signator, can't be checked)
sig?      FEF4A7ED 1996-08-01   (Unknown signator, can't be checked)
sig!      18323349 1996-04-23 Stephen E. Hansen <sehansen@stanford.edu>
sig!      E334FE61 1996-08-28 Simon Shickman <simon@horizon.cc.huji.ac.il>
sig?      2011B879 1997-10-17   (Unknown signator, can't be checked)
sig?      A69D7979 1996-09-05   (Unknown signator, can't be checked)
sig?      3ACE55FE 1997-10-17   (Unknown signator, can't be checked)
sig?      EE26E805 1996-01-23   (Unknown signator, can't be checked)
sig!      93085CC9 1996-08-19 Andrzej Chrzaszcz.new <andrzej@nask.pl>
sig?      270076FD 1997-10-17   (Unknown signator, can't be checked)
sig!      7F82BE71 1996-09-04 Jorgen Bo Madsen <Jorgen.Bo.Madsen@uni-c.dk>
sig!      20E76E5D 1996-04-23 Steven M. Romig <romig@net.ohio-state.edu>
sig!      FF23FE6D 1996-09-04 UNI-CERT <cert@uni-c.dk>
sig?      F5123899 1996-01-23   (Unknown signator, can't be checked)
sig!      6E8F3D55 1996-08-15 REACT <react@cip.saic.com>
sig!      A0585305 1996-09-04 NORDUnet CERT <cert@nordu.net>
sig!      F6539285 1996-09-05 Martin Bech <Martin.Bech@uni-c.dk>
sig?      3D52E07F 1997-10-17   (Unknown signator, can't be checked)
sig?      E35FCCFD 1996-09-05   (Unknown signator, can't be checked)
sig?      2F8D5039 1996-09-02   (Unknown signator, can't be checked)
sig!      FC0C02D5 1997-07-28 Eugene H. Spafford <spaf@cs.purdue.edu>
sig!      D6DC8A3D 1996-07-02 ASSIST Team <assist@assist.mil>
sig!      8B05342D 1996-10-04 Graham King <GrahamK@trio.demon.co.uk>
sig!      3F0D98DD 1996-09-09 Stefan Kelm, DFN-PCA <kelm@pca.dfn.de>
sig?      16B6FC9D 1996-08-15   (Unknown signator, can't be checked)
sig?      A326CF89 1996-01-24   (Unknown signator, can't be checked)
sig!      6941BB25 1996-08-19 CERT-NASK.1024 <cert@nask.pl>
sig!      9E1A53A5 1996-08-01 Robert K. Foertsch <foertsch@uiuc.edu>
sig!      CFA87201 1996-01-22 Kathy Kimball <krk5@psu.edu>

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  2048 DE0E525D 1996-04-10 ---------- RSA             Sign and Encrypt
uid  Franco Visentin <Franco.Visentin@italtel.it>
sig*      DE0E525D 1996-09-06 Franco Visentin <Franco.Visentin@italtel.it>
sig*      9764A27D 1997-03-13 CERT-IT <cert-it@security.dsi.unimi.it>
uid  Franco Visentin <visentin@milano.italtel.it>
sig*      DE0E525D 1996-04-10 Franco Visentin <Franco.Visentin@italtel.it>

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  2048 DE0E525D 1996-04-10 ---------- RSA             Sign and Encrypt
uid  Franco Visentin <Franco.Visentin@italtel.it>
sig?      880D1042 1998-09-18   (Unknown signator, can't be checked)
sig!      DE0E525D 1996-09-06 Franco Visentin <Franco.Visentin@italtel.it>
sig!      9764A27D 1997-03-13 CERT-IT <cert-it@security.dsi.unimi.it>
uid  Franco Visentin <visentin@milano.italtel.it>
sig!      DE0E525D 1996-04-10 Franco Visentin <Franco.Visentin@italtel.it>

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  1024 E879DAF5 1992-11-11 ---------- RSA             Sign and Encrypt
uid  emmanuel@well.sf.ca.us
uid  ummanuul@well.sf.ca.us
sig*      FB15CC60 1997-07-15 Phantom <Lobotomi@Mindless.com>

Type Bits KeyID    Created    Expires    Algorithm       Use
pub  1024 E879DAF5 1992-11-11 ---------- RSA             Sign and Encrypt
uid  ummanuul@well.sf.ca.us
sig!      FB15CC60 1997-07-15 Phantom <Lobotomi@Mindless.com>
sig?      76B30D71 1997-07-15   (Unknown signator, can't be checked)

Hints, Errors and Comments by mail to Patrick Feisthammel <pafei@rubin.ch>
Last modification: 2 July 2002, Patrick Feisthammel