Cryptographic Token Interface Standard

PKCS#11

RC5-MAC

RC5-MAC, denoted by CKM_RC5_MAC, is a special case of the general-length RC5-MAC mechanism (see Section 12.16.5). Instead of taking a CK_RC5_MAC_GENERAL_PARAMS parameter, it takes a CK_RC5_PARAMS parameter. RC5-MAC always produces and verifies MACs half as large as the RC5 blocksize.

Constraints on key types and the length of data are summarized in the following table: 




 Table 79, RC5-MAC: Key And Data Length   
Function Key type 

Data length

 

Signature length

   


C_Sign RC5 

any

 

RC5 wordsize = LOWER(blocksize/2)

   


C_Verify RC5 

any

 

RC5 wordsize = LOWER(blocksize/2)

  

 



 
 



RSA Security Inc. Public-Key Cryptography Standards - 
PKCS#11 - v210