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Tspi_TPM_DAA_JoinInit(3)			      Tspi_TPM_DAA_JoinInit(3)

		   TCG Software Stack Developer's Reference


Tspi_TPM_DAA_JoinInit - start the DAA Join process


#include <tss/tss_typedef.h> #include <tss/tss_structs.h> #include <tss/tspi.h> TSPICALL Tspi_TPM_DAA_JoinInit( TSS_HDAA hDAA, TSS_HTPM hTPM, TSS_HKEY issuer_pk, UINT32 issuer_authentication_PKLength, TSS_HKEY* issuer_authentication_PK, UINT32 issuer_authentication_PK_signaturesLength, BYTE** issuer_authentication_PK_signatures, UINT32* capital_UprimeLength, BYTE** capital_Uprime, TSS_DAA_IDENTITY_PROOF* identity_proof, TSS_DAA_JOIN_SESSION* join_session );


Tspi_TPM_DAA_JoinInit is the first out of 3 functions to execute in or- der to receive a DAA Credential. It verifies the keys of the DAA Issuer and computes the TPM DAA public key.


hDAA The hDAA parameter is used to specify the handle of the DAA object. hTPM The hTPM parameter is the handle to the TPM object. issuer_pk The issuer_pk parameter is the of the DAA Issuer public key. issuer_authentication_PKLength The issuer_authentication_PKLength parameter is the length of the array of issuerAuthPKs. issuer_authentication_PK The issuer_authentication_PK parameter is an array of RSA public keys (key chain) of the DAA Issuer used to authenticate the DAA Issuer public key. The size of the modulus must be TPM_DAA_SIZE_issuerModulus (256). issuer_authentication_PK_signaturesLength The issuer_authentication_PK_signaturesLength parameter is the length of the array of issuerAuthPKSignatures. It is equal to issuerAuthPKsLength. The length of an element of the array is TPM_DAA_SIZE_issuerModulus (256). issuer_authentication_PK_signatures The issuer_authentication_PK_signatures parameter is the array of byte arrays representing signatures on the modulus of the above key chain (issuerAuthPKs) in more details, the array has the following content (S(K[1],K[0]),S(K[2],N[1]),..S(K[ k ],K[n-1]), S(TPM_DAA_ISSUER,K[ k ])), where S(msg,privateKey) denotes the signature function with msg being signed by the privateKey. capital_UprimeLength The capital_UprimeLength parameter is the length of capitalUprime which is ln/8. ln is defined as the size of the RSA modulus (2048). capital_Uprime The capital_Uprime parameter is U'. identityProof The identityProof parameter is a structure containing the endorsement, platform and conformance credential. joinSession The joinSession parameter is a structure containing DAA Join session information.


Tspi_TPM_DAA_JoinInit returns TSS_SUCCESS on success, otherwise one of the following values is returned: TSS_E_INVALID_HANDLE Either the DAA or the TPM handler is not valid. TSS_E_BAD_PARAMETER TSS_E_INTERNAL_ERROR An internal SW error has been detected. TSS_E_DAA_ISSUER_KEY_ERROR


Tspi_TPM_DAA_JoinInit conforms to the Trusted Computing Group Software Specification version 1.2


Tspi_TPM_DAA_JoinCreateDaaPubKey(3) Tspi_TPM_DAA_JoinStoreCredential(3) TSS 1.2 2006-09-04 Tspi_TPM_DAA_JoinInit(3)

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