!!! Overview
The [{$pagename}] (or [Certificate Fingerprint]) field is computed from [Hash] from the [Cryptographic Hash Function] of the whole [Certificate] using the identified [Certificate Signature Algorithm]. 

[{$pagename}] field is generated at the time it was created by [Certificate Issuer]. The process is:
* [Hash] from the [Cryptographic Hash Function] of the whole certificate using the identified [Certificate Signature Algorithm]
* Raise this [Hash] to [Certificate Issuer]'s [Public Key] [Certificate Exponent] value 
* And then divide this by the [Certificate Issuer]'s [Public Key] [Certificate Modulus] value.
we then only use the we get this "decrypted" signature.


 [Hash]%%sup [Certificate Issuer]'s [Public Key] [Certificate Exponent]%%/MOD([Certificate Issuer]'s [Public Key] [Certificate Modulus] value)
 
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Since the [Certificate Issuer]'s [Public Key] is available to all, for [Certificate Validation] we can perform these same steps and [calculate the value|Verifying Certificate Signatures]. The calculated value should match the value on the [Protocol Server]'s [Certificate].

!! More Information
There might be more information for this subject on one of the following:
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