Cryptographic Token Interface Standard

PKCS#11

SKIPJACK-OFB64

SKIPJACK-OFB64, denoted CKM_SKIPJACK_OFB64, is a mechanism for single- and multiple-part encryption and decryption with SKIPJACK in 64-bit output feedback mode as defined in FIPS PUB 185.

It has a parameter, a 24-byte initialization vector. During an encryption operation, this IV is set to some value generated by the token"in other words, the application cannot specify a particular IV when encrypting. It can, of course, specify a particular IV when decrypting.

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




 Table 110, SKIPJACK-OFB64: Data and Length   
Function Key type 

Input length

 

Output length

 

Comments

   


C_Encrypt SKIPJACK 

multiple of 8

 

same as input length

 

no final part

   


C_Decrypt SKIPJACK 

multiple of 8

 

same as input length

 

no final part

  

 



 
 



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