F_GenerateHashValue

The function can be used to calculate a hash value.

If the calculation is successful, the function returns TRUE.

FUNCTION F_GenerateHashValue : BOOL

VAR_INPUT

VAR_INPUT
    hashMode : E_HashMode;
    pData    : PVOID;
    nData    : UDINT;
    pHash    : PVOID;    // destination buffer for generated hash value
    nHash    : UDINT;    // size of destination buffer in bytes. This needs to match the hash mode.
END_VAR

hashMode: A hash mode, such as SHA 512, is specified here. See E_HashMode.

pData: The address of the input data is specified here.

nData: The size of the input data in bytes is specified here.

pHash: Here the address of the buffer is specified where the hash value is to be stored.

nHash: The size of the buffer for the hash value in bytes is specified here. The size depends on the hash mode, see also E_HashMode. The appropriate size must be specified. Otherwise the function will fail.

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.4024.29	PC or CX (x86, x64, ARM)	Tc2_Utilities (System) >= 3.3.51.0