Developer Reference

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AES_EncryptCFB16_MB

Encrypts multiple independent buffers of byte data according to AES in the CFB mode with 16-byte CFB block size.

Syntax

IppStatus ippsAES_EncryptCFB16_MB(const Ipp8u*
pSrc[]
, Ipp8u*
pDst[]
, int len[]
, const IppsAESSpec*
pCtx[]
, const Ipp8u *
pIV[]
, IppStatus status[]
, int numBuffers
);
Include Files
ippcp.h
Parameters
pSrc[]
Pointer to the array of the input plaintext data streams of variable length.
pDst[]
Pointer to the array of the resulting ciphertext data streams.
len[]
Pointer to the array of the lengths of the plaintext data streams, in bytes.
pCtx[]
Pointer to the array of the
IppsAESSpec
contexts.
pIV[]
Pointer to the array of initialization vectors for the CFB mode operation.
status[]
Pointer to the
IppStatus
array thar contains status for each processed buffer in an encryption operation.
numBuffers
Number of buffers to be processed.
Description
The function performs the AES multi-buffer encryption operation, which consists of several AES operations performed simultaneously with a variable-length input data stream in accordance with the CFB mode, as specified in [NIST SP 800-38A].
The function can perform a variable number of independent AES CFB encryption operations at the same time. This number is specified in the
numBuffers
parameter.
Each AES CFB encryption operation requires valid parameters that follow the
AESEncryptCFB
syntax.
After execution, the statuses array contains statuses for each single AES CFB encryption operation returned by
AESEncryptCFB
.
All
IppAESSpecs
in operation must be initialized with the same size of key (see
ippsAESInit
and
ippsAESSetKey
).
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
.
ippStsLengthErr
Indicates an error condition if the input
numBuffers
parameter is less than or equal to zero.
ippStsContextMatchErr
Indicates an error condition if input buffers have different key sizes.
ippStsErr
Indicates an error when one or more processed operations are executed with errors. For details, check the statuses array.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.