Cryptography for Intel® Integrated Performance Primitives Developer Reference

Developer Reference

Contents

RSA_MB_Encrypt

Performs the RSA multi-buffer encryption operation.

Syntax

IppStatus ippsRSA_MB_Encrypt(const IppsBigNumState*
pPtxts[8]
, IppsBigNumState*
pCtxts[8]
, const IppsRSAPublicKeyState*
pKeys[8]
, IppStatus
statuses[8]
, Ipp8u*
pBuffer
);
Include Files
ippcp.h
Parameters
pPtxts[8]
Pointer to the
IppsBigNumState
 context of the plaintext for each encryption operation.
pCtxts[8]
Pointer to the
IppsBigNumState
 context of the ciphertext for each encryption operation.
pKeys[8]
Pointer to the
IppsRSAPublicKeyState
 context for each encryption operation.
statuses
Pointer to the
IppStatus
 array that contains statuses for each encryption operation.
pScratchBuffer
Pointer to the temporary buffer of size not less than returned by the
RSA_MB_GetBufferSizePublicKey
 function.
Description
The function performs the RSA multi-buffer encryption operation, which is the RSA operation on a public key. The function can perform up to 8 single RSA encryption operations at once.
Each RSA encryption operation requires valid parameters that follow the
ippsRSA_Encrypt
 syntax. After execution, the statuses array contains statuses for each single RSA encryption operation returned by
ippsRSA_Encrypt
.
To perform less than 8 operations, set one or more contexts in arrays to NULL. In this case, all single operations with NULL in parameters are not performed, and the function returns
ippStsMbWarning
.
Sizes of all moduli
n
 in all the
IppsRSAPublicKeyState
 contexts in the
pKeys
 array must be equal. Sizes and values of all public exponents
e
 in all the
IppsRSAPublicKeyState
 contexts in the
pKeys
 array must be equal.
Return Values
ippStsNoErr
Indicates no error. All single operations are executed without errors. Any other value indicates an error or warning.
ippStsNullPtrErr
Indicates an error condition if any of the specified pointers is
NULL
.
ippStsSizeErr
Indicates an error condition if the size of modulus
n
 in one context is not equal to the size of the modulus
n
 in other contexts.
ippStsBadArgErr
Indicates an error condition if the size or value of the exponent
e
 in one context is not equal to the value and size of
e
 in other contexts.
ippStsMbWarning
Indicates a warning when one or more performed operations are executed with errors. For details, check the statuses array.

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