Developer Reference

Contents

AES_GCMStart

Starts the process of authenticated encryption/decryption for new message.

Syntax

IppStatus ippsAES_GCMStart(const Ipp8u*
pIV
, int
ivLen
, const Ipp8u*
pAAD
, int
aadLen
, IppsAES_GCMState*
pState
);
Include Files
ippcp.h
Parameters
pIV
Pointer to the initialization vector.
ivLen
Length of the initialization vector
*pIV
(in bytes).
pAAD
Pointer to the additional authenticated data.
aadLen
Length of additional authenticated data
*pAAD
(in bytes).
pState
Pointer to the
IppsAES_GCMState
context.
Description
The function resets internal counters and buffers of the *
pState
context.
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr
Indicates an error condition if any of the specified pointers is NULL.
ippStsContextMatchErr
Indicates an error condition if the context parameter does not match the operation.
ippStsLengthErr
Indicates an error condition if the length of the initialization vector is zero.

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