Cryptographic Token Interface Standard

PKCS#11

SKIPJACK-CFB8

SKIPJACK-CFB8, denoted CKM_SKIPJACK_CFB8, is a mechanism for single- and multiple-part encryption and decryption with SKIPJACK in 8-bit cipher 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 91, SKIPJACK-CFB8: Data and Length   
Function Key type 

Input length

 

Output length

 		Comments   


C_Encrypt SKIPJACK 

multiple of 4

 

same as input length

 		no final part   


C_Decrypt SKIPJACK 

multiple of 4

 

same as input length

 		no final part  

 



 
 



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