Location: Symbol Reference > Classes > TJwHash Class
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TJwHash Class
Pascal
TJwHash = class;

TJwHash is a class to compute hashes. Both keyless and keyed algorithms are supported. Hashes can also be used to sign data.

 
Name 
Description 
 
Creates a new hash object  
 
Destroys the hash object and releases the CSP 
Name 
Description 
The following tables list the members exposed by TJwHash. 
The methods of the TJwHash class are listed here. 
The properties of the TJwHash class are listed here. 
 
Name 
Description 
 
FreeBuffer frees buffer returned by previous calls to RetrieveHash and Sign .  
 
GetHashLength returns the size of the hash value in bytes. This value is constant for each algorithm.  
 
This function returns the length of the signature for subsequent calls to the Sign routine.  
 
Adds data to the hash object  
 
Adds data to the hash object  
 
This is the overview for the RetrieveHash method overload. 
 
Sign 
This is the overview for the Sign method overload. 
 
VerifySignature verifies that the given signature is correct for the data previously added to the hash using HashData .  
 
Name 
Description 
 
The algorithm specified in the call to create EJwsclHashApiException will be raised if the underlying Windows call fails. 
 
HashHandle is the handle to the hash object. 
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