Cryptography for Intel(R) Integrated Performance Primitives Developer Reference

ID 768738
Date 12/16/2022
Public
Document Table of Contents

AESInit

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

Syntax

IppStatus ippsAESInit(const Ipp8u* pKey, int keylen, IppsAESSpec* pCtx, int ctxSize);

Include Files

ippcp.h

Parameters

pKey

Pointer to the AES key.

keylen

Key byte stream length in bytes defined by the IppsRijndaelKeyLength enumerator.

pCtx

Pointer to the buffer being initialized as IppsAESSpec context.

ctxSize

Available size of the buffer being initialized.
Description

This function initializes the memory pointed by pCtx as IppsAESSpec. The key is used to provide all necessary key material for both encryption and decryption operations.

NOTE:

If the pKey pointer is NULL, the function initializes the context with the zero key, which can help you to clean up the actual secret before releasing the context.

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

Returns an error condition if keyLen is not equal to 16, 24, or 32.

ippStsMemAllocErr

Indicates an error condition if the allocated memory is insufficient for the operation.

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