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.\" Copyright (C) 2006 International Business Machines Corporation
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.\" Written by Anthony Bussani based on the Trusted Computing Group Software Stack Specification Version 1.2
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.de Sp \" Vertical space (when we can't use .PP)
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.ie \\n(.$>=3 .ne \\$3
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.TH "Tspi_TPM_DAA_JoinCreateDaaPubKey" 3 "2006-09-04" "TSS 1.2"
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TCG Software Stack Developer's Reference
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Tspi_TPM_DAA_JoinCreateDaaPubKey \- computes the credential request for the DAA Issuer
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.B #include <tss/tss_typedef.h>
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.B #include <tss/tss_structs.h>
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.B #include <tss/tspi.h>
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.BI "TSS_RESULT Tspi_TPM_DAA_JoinCreateDaaPubKey("
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.BI " TSS_HDAA " hDAA ","
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.BI " TSS_HTPM " hTPM ","
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.BI " UINT32 " authenticationChallengeLength ","
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.BI " BYTE* " authenticationChallenge ","
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.BI " UINT32 " nonceIssuerLength ","
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.BI " BYTE* " nonceIssuer ","
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.BI " UINT32 " attributesPlatformLength ","
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.BI " BYTE** " attributesPlatform ","
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.BI " TSS_DAA_JOIN_SESSION* " joinSession ","
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.BI " TSS_DAA_CREDENTIAL_REQUEST* " credentialRequest
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\Tspi_TPM_DAA_JoinCreateDaaPubKey\fR
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is the second (between \fBTspi_TPM_DAA_JoinInit()\fR and \fBTspi_TPM_DAA_JoinStoreCredential()\fR)
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out of 3 functions to execute in order to receive a DAA Credential.
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It computes the credential request for the DAA Issuer, which also includes the Platforms's
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DAA public key and the attributes that were chosen by the Platform, and which are not visible
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to the DAA Issuer. The Platform can commit to the attribute values it has chosen.
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The \fIhDAA\fR parameter is used to specify the handle of the DAA object.
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The \fIhTPM\fR parameter is the handle to the TPM object.
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.SS authenticationChallengeLength
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The \fIauthenticationChallengeLength\fR parameter is length of authenticationChallenge (256 bytes - DAA_SIZE_NE1).
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.SS authenticationChallenge
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The \fIauthenticationChallenge\fR parameter is the second nonce of the DAA Issuer that is encrypted by the endorsement public key.
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It is used as a challenge to authenticate the underlying TPM.
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The \fInonceIssuerLength\fR parameter is the length of nonceIssuer (20 bytes).
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The \fInonceIssuer\fR parameter is the nonce of the DAA Issuer.
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.SS attributesPlatformLength
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The \fIattributesPlatformLength\fR parameter is length of attributesPlatform array, which is determined
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by the DAA Issuer public key (). The length of a single attribute is ln/8. ln is defined as the size of
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the RSA modulus (2048).
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.SS attributesPlatform
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The \fIattributesPlatform\fR parameter is an array of attributes to be encoded into the DAA Credential
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not visible to the DAA Issuer.
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The \fIjoinSession\fR parameter is a structure containing the DAA Join session information.
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The \fIcredentialRequest\fR parameter is the credential request of the Platform, it contains the blinded
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DAA public key of the platform on which the DAA Issuer will issue the credential the blinded attributes
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chosen by the Platform.
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\fBTspi_TPM_DAA_JoinCreateDaaPubKey\fR returns TSS_SUCCESS on success, otherwise one of the
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following values is returned:
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.SM TSS_E_INVALID_HANDLE
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Either the DAA is not valid.
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.SM TSS_E_BAD_PARAMETER
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.SM TSS_E_INTERNAL_ERROR
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An internal SW error has been detected.
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\fBTspi_TPM_DAA_JoinCreateDaaPubKey\fR conforms to the Trusted Computing Group
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Software Specification version 1.2
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\fBTspi_TPM_DAA_JoinInit\fR(3)
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\fBTspi_TPM_DAA_JoinStoreCredential\fR(3)
added
removed
man/man3/Tspi_TPM_DAA_JoinCreateDaaPubKey.3
