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Chapter 2 Algorithm Info Types 23
AI_DES_CBC_IV8
AI_DES_CBC_IV8
Purpose:
This AI allows you to perform DES encryption or decryption in CBC mode with an 8-
byte initialization vector on data that is a multiple of 8 bytes long. No padding will be
performed. See
AI_DES_CBCPadIV8 for the same algorithm type with padding.
Type of information this allows you to use:
an 8-byte initialization vector for the DES-CBC encryption algorithm as defined in
FIPS PUB 46-1 and FIPS PUB 81.
Format of info supplied to B_SetAlgorithmInfo:
pointer to an unsigned char array that holds the 8 bytes of the initialization vector.
Format of info returned by B_GetAlgorithmInfo:
pointer to an unsigned char array that holds the 8 bytes of the initialization vector.
Crypto-C procedures to use with algorithm object:
B_EncryptInit, B_EncryptUpdate, B_EncryptFinal, B_DecryptInit,
B_DecryptUpdate, and B_DecryptFinal. You may pass (B_ALGORITHM_OBJ)NULL_PTR
for all
randomAlgorithm
arguments.
Algorithm methods to include in application’s algorithm chooser:
AM_DES_CBC_ENCRYPT for encryption and AM_DES_CBC_DECRYPT for decryption.
Key info types for keyObjec t in B_EncryptInit or B_DecryptInit:
KI_DES8Strong, KI_DES8, KI_8Byte, KI_Item (if the length of the ITEM is 8), or
KI_DES_BSAFE1.
Input constraints:
During encryption, this algorithm does not pad the output. Thus, you must provide