KI_DES8Strong
250 RSA BSAFE Crypto-C Library Reference Manual
KI_DES8Strong
Purpose:
This KI allows you to specify an 8-byte key used by the DES algorithm. The key object
will satisfy the DES parity requirement and will be checked against known DES weak
keys. Also see
KI_DES8.
Type of information this allows you to use:
an 8-byte value for a DES key where the information stored in the key object will be
DES parity adjusted according to FIPS 46-1. Crypto-C treats the least significant bit of
each byte of the key data as the DES parity adjustment bit. When setting a key object
with this KI, Crypto-C will check the input data against a list of known DES weak
keys. If the resulting key would be weak, Crypto-C returns an error.
Format of info supplied to B_SetKeyInfo:
pointer to an unsigned char array that holds the 8-byte DES key. The key is DES
parity adjusted when it is copied to the key object.
Format of info returned by B_GetKeyInfo:
pointer to an unsigned char array that holds the 8-byte DES key, which is DES parity
adjusted.
Can get this info type if key object already has:
KI_DES8Strong, KI_DES8 (if the key is not weak), KI_Item (if the length of the ITEM is
8, the data's DES parity is correct, and the key is not weak), or
KI_8Byte (if the DES
parity is correct and the key is not weak.
