| |
|
 |
Strong
evidence for data authentication |
|
|
| |
Public key certificates for the time stamp authority |
| |
| |
The public keys are provided for independent verification of the time stamps
created by the DigiStamp time stamp servers. Each public key is provided
as a standard x.509 certificate. You can download these public keys over
a SSL connection.
The root certificate can be downloaded and added to your software. For example, import the certificate to your Internet browser or Adobe Acrobat signing tools.
The DigiStamp root certificate:
 DGSca80.cer The certificate's SHA-1 value
is used for confirmation in some software:
9a048ed85eec7c802eeb
bbb7c91792d7aae45136
Click here for additional information about what you need to verify a time stamp.
To review your options for integrating the chain of authority of these
certificates with your enterprise CA then click here.
Time Stamp server public key certificates:
The public keys are used to verify the digital signature contained in a time stamp. These certificates are commonly contained within each time stamp and they are provided here for convenience. We periodically destroy the signing key and create new keys. The list below is in descending time order as we have replaced the keys. |
 |
|
|
 |
Time-stamp public key certificate for server "TSA 1" |
| |
- Server's External Audit certificate DGS84.cer
|
|
Time-stamp public key certificate for server "TSA 2" |
|
- Server's External Audit certificate DGS83.cer
|
|
|
|
History of older keys that were used and then destroyed |
|
- Time stamp public key certificates for server "TSA 1", replaced
and private key destroyed:
- DGS84.32771.cer Jan 24, 2007 - Nov 14, 2007 12:54 GMT
- DGS84.32770.cer April 13, 2006 - Jan 24, 2007 13:23 GMT
- DGS84.32769.cer July 30, 2005 - April 13, 2006 12:45 GMT
- DGS82.32768.cer and DGS82.cer May 22, 2005 - July 30, 2005 12:10 GMT
- DGS68.cer May 2, 2004 - May 22, 2005 12:32 GMT
- These older certificates are before the external audit process and are issued directly from the Root CA cert:
- DGS64.cer May 3, 2003 - May 2, 2004 21:44 GMT
- DGS57.cer May 6, 2002 - May 3, 2003 13:05 GMT
- DGS45.cer January 21, 2001 - May 6, 2002 16:29 GMT
- DGS37.cer October 29, 2000 - January 21, 2001 15:49 GMT
- DGS30.cer September 1, 2000 - October 29, 23:00 GMT
- DGS27.cer April 12, 2000 - September 1, 2000 21:30 GMT
- DGS23.cer March 31, 2000 - April 12, 2000 4:00 AM GMT
|
|
|
|
- Time stamp public key certificates for server "TSA 2", replaced
and private key destroyed:
- DGS83.32771.cer August 14, 2007 - March 5, 2008 13:29 GMT
- DGS83.32770.cer November 15, 2006 - August 14, 2007 12:33 GMT
- DGS83.32769.cer August 22, 2005 - November 15, 2006 13:01 GMT
- These older certificates are before the external audit process and are
issued directly from the Root CA cert:
- DGS69.cer August 1 2004 15:40 to August 22, 2005 12:49 GMT
- DGS67.cer August 7 2003 17:29 to August 1, 2004 15:08 GMT
- DGS63.cer April 5 13:31 2003 to August 15 16:30 2003 GMT
- DGS52.cer April 15, 2002 to April 5, 12:42 2003
- DGS46.cer January 21, 2001 to April 15, 2002 GMT
- DGS36.cer October 29, 2000 - January 21, 2001 16:02 GMT
- DGS32.cer August 19, 2000 - October 29, 2000 17:10 GMT
- The root certificate, serial number 44 and 58, were upgraded to support
audit process and encoding The previous certificate are still available
here: DGSca58.cer (replaced Feb 14 2005) and DGSca44.cer (first used for TSA2 on August 7 2003).
Time-stamp public keys for our IP-Protector application before March 2000 and back to when it was first released in March 1998 are available by writing to support@e-TimeStamp.com (these were not stored in x.509 form).
|
|
|
|
TEST Time Stamp server public key certificates: |
|
- Root certificate:
- DGSca70T.cer - began using February 14, 2005
- The organizational unit in the certificate's distinguished name is "test TSA" to signify that the time stamp was created for testing. Any time stamps that originated from the TEST environment (means that the time stamp is verified using this certificate chain) are not trusted time stamps. The TEST certificates and time stamp servers do not use the NIST certified hardware and are provided just for testing purposes.
- Audit certificate:
- dgsAudit71T.cer
- This certificate is the same for all of the test server instances. This
certificate is issued by the above root certificate, DGSca70t. This Audit
certificate then issues the certificates for the test servers (see the
diagram on this page in the upper right).
- Time-stamp public key certificates for server "TSA TEST1":
- DGS72T.cer changed on March 17, 2008
- Time-stamp public key certificates for server "TSA TEST2":
- DGS73T.cer changed on March 17, 2008
|
|
|
|
Available Time-Stamp Servers for our general user community |
|
- The time stamp servers are available to generate production time stamps:
- "TSA1" - http://tsa1.digistamp.com/TSA at IP address 65.67.185.10
- "TSA2" - http://tsa2.digistamp.com/TSA at IP address 71.216.124.224
Toolkit users can access these servers for testing their software integration:- "TSATEST1" - http://tsatest1.digistamp.com/TSA
- "TSATEST2" - http://tsatest2.digistamp.com/TSA
|
|
|
|
| |
|
|
|
| |
Copyright
© 1999-2008 DigiStamp, Inc. - All Rights Reserved
SecureTime SM , IP Protector SM , and e-TimeStamp® are
service marks of DigiStamp, Inc. |
| |
|
|
|
|
