Developer Reference

Contents

AES_XTSInit

Initializes user-supplied memory as
IppsAES_XTSSpec
context for future use.

Syntax

IppStatus ippsAES_XTSInit(const Ipp8u*
pKey
, int
keyLen
, int
duBitSize
, IppsAES_XTSSpec*
pCtx
, int
ctxSize
);
Include Files
ippcp.h
Parameters
pKey
Pointer to the secret key.
keyLen
Length of the secret key in bits.
duBitSize
Length of the Data Unit in bits.
pCtx
Pointer to the buffer being initialized as
IppsAES_XTSSpec
context.
ctxSize
Available size of the buffer being initialized.
Description
This function initializes the memory pointed by
pCtx
as
IppsAES_XTSSpec
. In addition, the function uses the initialization variable and additional authenticated data to provide all necessary key material for both encryption and decryption operations.
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr
Indicates an error condition if the
pCtx
pointer is
NULL
.
ippStsLengthErr
Indicates an error condition if
keyLen
is not equal to 16×8×2 or 32×8×2.
ippStsMemAllocError
Indicates an error condition if the allocated memory is insufficient for the operation.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804