DragonFly On-Line Manual Pages

Tspi_DAA_VerifySignature(3)			   Tspi_DAA_VerifySignature(3)

		   TCG Software Stack Developer's Reference

NAME
       Tspi_DAA_VerifySignature - creates a challenge for the TCG platform

SYNOPSIS
       #include <tss/tss_typedef.h>
       #include <tss/tss_structs.h>
       #include <tss/tspi.h>

       TSPICALL Tspi_DAA_VerifySignature(
	   TSS_HDAA		       hDAA,
	   TSS_DAA_SIGNATURE	       daaSignature,
	   TSS_HKEY		       hPubKeyIssuer,
	   TSS_DAA_SIGN_DATA	       signData,
	   UINT32		       attributesLength,
	   BYTE**		       attributes,
	   UINT32		       nonceVerifierLength,
	   BYTE*		       nonceVerifier,
	   UINT32		       baseNameLength,
	   BYTE*		       baseName,
	   TSS_BOOL*		       isCorrect
       );

DESCRIPTION
       Tspi_DAA_VerifySignature  is  part  of the DAA Verifier component. It's
       the last function out of 2 in order to verify a DAA Credential of a TCG
       platform. It verifies the DAA Credential and detects public rogue TPMs.
       This is an optional function and does not require a TPM or a TCS.

PARAMETERS
   hDAA
       The hDAA parameter is used to specify the handle of the DAA object.

   daaSignature
       The daaSignature parameter is the DAA signature contains proof of  own-
       ership  of  the DAA Credential, as well as a signature on either an AIK
       or a message.

   hPubKeyIssuer
       The hPubKeyIssuer parameter is the handle of the DAA public key of  the
       DAA Issuer of the credential.

   signData
       The signData parameter defines what data is signed (AIK or message).

   attributesLength
       The  attributesLength  parameter is the Length of attributes array that
       is determined by the DAA Issuer public key (lh+li).  The  length  of  a
       single attribute is lf/8.

   attributes
       The  attributes parameter is the array of attributes which the DAA Cre-
       dential owner reveals.

   nonceVerifierLength
       The nonceVerifierLength parameter is the length	of  nonceVerifier  (20
       bytes).

   nonceVerifier
       The  nonceVerifier parameter is the nonce that was computed in the pre-
       vious function (Tspi_VerifyInit).

   baseNameLength
       The baseNameLength parameter the length of the baseName.

   baseName
       The baseName parameter is the base name that was  chosen  for  the  DAA
       Signature.

   isCorrect
       The  isCorrect  parameter denotes if the verification of the DAA Signa-
       ture was successful.

RETURN CODES
       Tspi_DAA_VerifySignature returns TSS_SUCCESS on success, otherwise  one
       of the following values is returned:

       TSS_E_BAD_PARAMETER

       TSS_E_INTERNAL_ERROR
	      An internal SW error has been detected.

       CONFORMING TO

       Tspi_DAA_VerifySignature  conforms to the Trusted Computing Group Soft-
       ware Specification version 1.2

SEE ALSO
       Tspi_DAA_IssuerKeyVerification(3)

TSS 1.2 			  2006-09-04	   Tspi_DAA_VerifySignature(3)