Cryptographic Token Interface Standard

PKCS#11

FORTEZZA timestamp

The FORTEZZA timestamp mechanism, denoted CKM_FORTEZZA_TIMESTAMP, is a mechanism for single-part signatures and verification. The signatures it produces and verifies are DSA digital signatures over the provided hash value and the current time.

It has no parameters.

Constraints on key types and the length of data are summarized in the following table. The input and output data may begin at the same location in memory. 




 Table 53, FORTEZZA Timestamp: Key And Data Length   
Function Key type 

Input length

 

Output length

   


C_Sign1 DSA private key 

20

 

40

   


C_Verify1 DSA public key 

20, 402

 

N/A

  

 



1 Single-part operations only.


2 Data length, signature length.


For this mechanism, the ulMinKeySize and ulMaxKeySize  fields of the CK_MECHANISM_INFO structure specify the supported range of DSA prime sizes, in bits.


 
 



RSA Security Inc. Public-Key Cryptography Standards - 
PKCS#11 - v220