Developer Guide and Reference for Intel® Cryptography Primitives Library
LMS Signature Generation
Performs the LMS signature generation.
Syntax
IppStatus ippsLMSSign (const Ipp8u* pMsg,
const Ipp32s msgLen,
IppsLMSPrivateKeyState* pPrvKey,
IppsLMSSignatureState* pSign,
IppBitSupplier rndFunc,
void* pRndParam,
Ipp8u* pBuffer);
Include Files
ippcp.h
Parameters
pMsg |
Pointer to the message that is signed. |
msgLen |
Message length in bytes. |
pPrvKey |
Pointer to the initialized IppsLMSPrivateKeyState context. Size is greater or equal to the value returned by the ippsLMSPrivateKeyStateGetSize function. |
pSign |
Pointer to the initialized IppsLMSSignatureState context. Size is greater or equal to the value returned by the ippsLMSSignatureStateGetSize function. |
rndFunc |
Pointer to the random number generator function that is used for private key generation. The function should be defined as: IppStatus rndFunc(Ipp8u* pRnd, int size, void* pRndParam). This function must be cryptographically secure. Security strength must be 8*n bits, where n is the length of the hash function output. The size parameter is the size of the buffer in bytes. The pRndParam parameter is a pointer to the user-defined parameter. If rndFunc is NULL then TRNGenRDSEED is used as a random number generator. |
pRndParam |
Pointer to the user-defined parameter for the random number generator function. It can be a NULL pointer. |
pBuffer |
Pointer to the temporary buffer. Size is greater or equal to the value returned by the ippsLMSSignBufferGetSize function. |
Description
This function signs the message with the LMS algorithm.
This function uses internally the random number generator (RNG) provided by the user through the rndFunc parameter, please see User’s Implementation of a RNG for more information regarding creation the customer’s defined RNG object. If rndFunc is NULL, the internal default random number generator based on RDRAND hardware instruction is used.
pSign is an output parameter.
Important
You need to enable the IPPCP_PREVIEW_LMS macro to use the feature. For more information, see Preview Features.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. |
ippStsContextMatchErr |
pPrvKey or pSign contexts are invalid. |
ippStsBadArgErr |
wrong LMS or LMOTS parameters. |
ippStsOutOfRangeErr |
private key will not be valid any longer after executing the function and new keys need to be generated again using ippsLMSKeyGen. |
ippStsLengthErr |
msgLen < 1 or msgLen > IPP_MAX_32S - (22 + n), where n is the LM-OTS parameter. |