Visible to Intel only — GUID: GUID-1AA0F60D-292B-4073-A9A1-E88DB82D63C6
Visible to Intel only — GUID: GUID-1AA0F60D-292B-4073-A9A1-E88DB82D63C6
GFpECDecryptSM2_Ext_DecMsgSize
Gets the buffer size of the SM2 Decrypt message text.
Syntax
IppStatus ippsGFpECDecryptSM2_Ext_DecMsgSize(const IppsGFpECState * pEC, int ptMsgSize, int * pSize)
Include Files
ippcp.h
Parameters
pEC |
Pointer to the elliptic curve context. |
ptMsgSize |
Decrypted text size. |
pSize |
Pointer to the size, in bytes, of the buffer cipher text. |
Description
The function computes the size of the buffer in bytes for the message text to be used later. The pEC parameter represents a properly initialized elliptic curve using the SM2 Decrypt.
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 are NULL. |
ippStsContextMatchErr |
Indicates an error condition if the IppsGFpECState context parameter does not match the operation. |
ippStsNotSupportedModeErr |
Indicates an error condition if the IppsGFpECState context parameter defines an elliptic curve over an extension of the prime finite field. |
ippStsOutOfRangeErr |
Indicates an error condition if ctMsgSize < 0. |