QuickCrypt Library

API

CFB Mode API Overview

CFB Mode API assists you in performing encryption/decryption in CFB mode of operation.

To encrypt/decrypt a continuous memory buffer, perform the following:

• Allocate at least CONTEXTSIZE bytes for the context. For example, to perform DES encryption/decryption allocate at least SLC_DES_CONTEXTSIZE bytes for the context.

• Call the Init function of the encryption algorithm you need to use, passing to it the secret key and the cipher direction (SLC_ENCRYPT only). For example, to perform DES encryption/decryption call SL_DES_Init function.

• Call the SL_CFB_Init function to initialize the context with the initialization vector and with the cipher direction (SLC_ENCRYPT or SLC_DECRYPT).

• Call the SL_CFB_Process function to encrypt/decrypt the memory buffer.

CFB Mode API Functions   |   Useful Links