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