XMSS Verification

Performs the XMSS verification.

Syntax

IppStatus ippsXMSSVerify (const Ipp8u* pMsg,
                          const Ipp32u msgLen,
                          const IppsXMSSSignatureState* pSign,
                          int* pIsSignValid,
                          const IppsXMSSPublicKeyState* pKey,
                          Ipp8u* pBuffer);

Include Files

ippcp.h

Parameters

pMsg	Pointer to the array of messages that have been signed.
msgLen	Message length.
pSign	Pointer to the `IppsXMSSSignatureState` context for each verification operation. Size is greater or equal to the value returned by the ippsXMSSSignatureStateGetSize function.
pIsSignValid	Pointer to the verification result.
pKey	Pointer to the `IppsXMSSPublicKeyState` context for each verification operation. Size is greater or equal to the value returned by the ippsXMSSPublicKeyStateGetSize function.
pBuffer	Pointer to the temporary buffer. Size is greater or equal to the value returned by the ippsXMSSBufferGetSize function.

Description

This function verifies the signature generated using XMSS.

pIsSignValid is an output parameter. If *pIsSignValid == 1 then the XMSS signature is valid. If *pIsSignValid == 0 then the XMSS signature is not valid.

Note

Important

This is a Preview Feature. You need to enable the IPPCP_PREVIEW_XMSS macro to use the feature.

Return Values

ippStsNoErr	Indicates no error. All single operations executed without errors. Any other value indicates an error or warning.
ippStsNullPtrErr	Any of the input parameters is a NULL pointer.
ippStsLengthErr	`msgLen < 1` or `msgLen < IPP_MAX_32S - (10 + len) * n`, where `n`, `len` are WOTS+ parameters``.