RSAInit

Initializes user-supplied memory as the IppsRSAState context for future use.

Syntax

IppStatus ippsRSAInit(int nBitsN, int nBitsP, IppRSAKeyType flag, IppsRSAState* pCtx);

Parameters

nBitsN	Length of the RSA system in bits (that is, the length of the composite RSA modulus n in bits)
nBitsP	Length in bits of the largest of two prime factors of the RSA modulus.
flag	The flag indicating RSA system for encryption or decryption operation.
pCtx	Pointer to the IppsRSAState context being initialized.

Description

This function is declared in the ippcp.h file. The function initializes the memory pointed by pCtx as the IppsRSAState context. Use the flag == IppRSApublic to initialize RSA context for encryption or flag == IppRSAprivate to initialize RSA context for the decryption operation. Refer to RSA-OAEP Scheme Functions and RSA-SSA Scheme Functions on which flag value to select for the schemes.

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.
ippStsNotSupportedModeErr	Indicates an error condition if nBitsN < 32 or nBitsN > 4096.
ippStsBadArgErr	Indicates an error condition if nBitsN > nBitsP or illegal flag value.