HKDF#
Computes the output key material from input key material, salt, info, and hash method per the HKDF standard.
Syntax#
IppStatus ippsHKDF(const Ipp8u* ikm, int ikmLen, Ipp8u* okm, int okmLen, const Ipp8u* salt, int saltLen, const Ipp8u* info, int infoLen, const IppsHashMethod* pMethod);
Include Files#
ippcp.h
Parameters#
ikm |
Pointer to the input key message. |
ikmLen |
Length of the input key message in bytes. |
okm |
Pointer to the output key message. |
okmLen |
Length of needed output key message in bytes. |
salt |
Pointer to salt message. |
saltLen |
Length of salt message in bytes. |
info |
Pointer to the info message. |
infoLen |
Length of the info message in bytes. |
pMethod |
Pointer to the hash method context. |
Description#
The function computes the output message as a part of the Hashed Message Authentication Code (HMAC)-based key derivation function (HKDF) as specified in RFC 5869.
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. |
ippStsLengthErr |
Indicates an error condition if any of the specified length parameters are invalid. |
ippStsNotSupportedModeErr |
Indicates hash method is not supported |