Re: Thumbprint of Digital ID

[Greg Stark]

It is the hash of the entire DER encoded certificate.   You can calculate it using the 'openssl' utility via:   openssl dgst -sha1 -c < cert.der _____________________________________ Greg Stark Ethentica, Inc. [EMAIL PROTECTED] _____________________________________     ----- Original Message ----- From: Sandipan Gangopadhyay To: [EMAIL PROTECTED] Sent: Tuesday, March 06, 2001 1:52 AM Subject: Thumbprint of Digital ID I used Xenroll and openssl to create a Digital ID on a Windows System. This is working fine. I can use it to sign emails.   My question is that when I view this certificate on IE or OE, Windows shows the digital ID's SHA1 Thumbprint.   This obviously is a hash, but of what ? The public key in a particular format ? The certificate in a particular format ?   If this is of the public key alone, could I calculate this myself using openssl and the PKCS10 .csr ?   Regards,   Sandipan