RSA_GetBufferSizePublicKey, RSA_GetBufferSizePrivateKey

Developer Reference for Intel® Integrated Performance Primitives Cryptography

Get the size of a temporary scratch buffer for future use in RSA operations.

Syntax

IppStatus ippsRSA_GetBufferSizePublicKey(int* pBufferSize, const IppsRSAPublicKeyState* pKey);

IppStatus ippsRSA_GetBufferSizePrivateKey(int* pBufferSize, const IppsRSAPrivateKeyState* pKey);

ippcp.h

pBufferSize	Pointer to the size of a temporary buffer.
pKey	Pointer to the RSA key context.

These functions get the size of a temporary buffer for future use in public- or private-key RSA operations, respectively.

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 any of the context parameters does not match the operation.
ippStsIncompleteContextErr	For RSA_GetBufferSizePublicKey, indicates an error condition if the public key is not set up. For RSA_GetBufferSizePrivateKeyType1, indicates an error condition if the type 1 private key is not set up. Note You can set up the public key or type 1 private key in a call to RSA_SetPublicKey or RSA_SetPrivateKeyType1, respectively. For the RSA_GetBufferSizePrivateKeyType2 function, it suffices to initialize the context for the key in a call to RSA_InitPrivateKeyType2.