include/crypto/ivgen.h

7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * You should have received a copy of the GNU Lesser General Public
30  * CBC. The principle is that each disk sector is assigned a unique
105  * @alg: the initialization vector generation algorithm
106  * @cipheralg: the cipher algorithm or 0
107  * @hash: the hash algorithm or 0
108  * @key: the encryption key or NULL
109  * @nkey: the size of @key in bytes
112  * the algorithm @alg. Whether the remaining parameters
113  * are required or not depends on the choice of @alg
118  * The IVs are generated by the 32-bit truncated sector
121  * All the other parameters are unused.
125  * The IVs are generated by the 64-bit sector number.
126  * All the other parameters are unused.
130  * The IVs are generated by encrypting the 64-bit sector
131  * number with a hash of an encryption key. The @cipheralg,
144  * @ivgen: the IV generator object
145  * @sector: the 64-bit sector number
146  * @iv: a pre-allocated buffer to hold the generated IV
147  * @niv: the number of bytes in @iv
150  * Calculate a new initialization vector for the data
151  * to be stored in sector @sector. The IV will be
152  * written into the buffer @iv of size @niv.
164  * @ivgen: the IV generator object
166  * Get the algorithm used by this IV generator
168  * Returns: the IV generator algorithm
175  * @ivgen: the IV generator object
177  * Get the cipher algorithm used by this IV generator (if
180  * Returns: the cipher algorithm
187  * @ivgen: the IV generator object
189  * Get the hash algorithm used by this IV generator (if
192  * Returns: the hash algorithm
199  * @ivgen: the IV generator object