/dev/aes is an IPC interface for the AES engine that accepts IOS_Open, IOS_Close & IOCTLV commands.
Internally in IOS, it usually has an internal FD of 0x10000. despite this, it is better to do an IOS_Open when using this resource.
/dev/aes IOS_Ioctlv
| number
|
Description
|
in count
|
out count
|
vector
|
vector length
|
| 0x00
|
Copy
|
1
|
1
|
input data (16-byte aligned)
|
-
|
| output data (16-byte aligned)
|
-
|
| 0x02
|
Encrypt
|
2
|
2
|
input data (16-byte aligned)
|
-
|
| key
|
16 bytes
|
| output data (16-byte aligned)
|
same as input
|
| initialization vector
|
16 bytes
|
| 0x03
|
Decrypt
|
2
|
2
|
input data (16-byte aligned)
|
-
|
| key
|
16 bytes
|
| output data (16-byte aligned)
|
same as input
|
| initialization vector
|
16 bytes
|