AMD AES Encryption Module Interface
** DESCRIPTION **
The AES encryption module provides two paths for a user application to perform
an encryption or decryption operation.
Asynchronous operations can be performed via write() and read() operations
through the device file. These are considered to be asynchronous, because the
user can go off and do other things while waiting for the encryption to return.
Synchronous methods are prompted via an ioctl() call (see below), and wait for
the result to be calculated.
Both methods use the key specified by the AES_IOCTL_SETKEY ioctl() call.
** IOCTL **
-----------------------------
AES_IOCTL_SETMODE (0x01)
-----------------------------
Arguments:
AES_MODE_ENCRYPT (0x01)
AES_MODE_DECRYPT (0x02)
Description:
Set the appropriate mode for subsequent asynchronous operations.
-----------------------------
AES_IOCTL_SETKEY (0x02)
-----------------------------
Argument:
16 byte AES key
Description:
Set the AES key for subsequent operations (both synchronous and asynchronous)
-----------------------------
AES_IOCTL_ENCRYPT (0x03)
AES_IOCTL_DECRYPT (0x04)
-----------------------------
Arguments:
struct aes_operation {
unsigned long src;
unsigned long dst;
int len;
}
Description:
Perform a synchronous encryption or decryption operation. The argument
is the aes_operation structure, where src is the address of the source block,
dst is the address of the destination block, and len is the size of the block.
(padded to 16 byte intervals).
-----------------------------
AES_IOCTL_SET_COHERENCY (0x05)
-----------------------------
Arguments:
true (1) or false (0)
Description:
Determine if the AES module should perform its own cache coherency,
or if it should be left to the driver to flush the cache.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.