.TH "Esys_ZGen_2Phase" 3 "Sun May 7 2023" "Version 4.0.1" "tpm2-tss" \" -*- nroff -*-
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.SH NAME
Esys_ZGen_2Phase \- The ESAPI function for the TPM2_ZGen_2Phase command\&.
.SH SYNOPSIS
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.PP
.SS "Functions"

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.RI "TSS2_RC \fBEsys_ZGen_2Phase_Async\fP (\fBESYS_CONTEXT\fP *esysContext, \fBESYS_TR\fP keyA, \fBESYS_TR\fP shandle1, \fBESYS_TR\fP shandle2, \fBESYS_TR\fP shandle3, const TPM2B_ECC_POINT *inQsB, const TPM2B_ECC_POINT *inQeB, TPMI_ECC_KEY_EXCHANGE inScheme, UINT16 counter)"
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.RI "TSS2_RC \fBEsys_ZGen_2Phase\fP (\fBESYS_CONTEXT\fP *esysContext, \fBESYS_TR\fP keyA, \fBESYS_TR\fP shandle1, \fBESYS_TR\fP shandle2, \fBESYS_TR\fP shandle3, const TPM2B_ECC_POINT *inQsB, const TPM2B_ECC_POINT *inQeB, TPMI_ECC_KEY_EXCHANGE inScheme, UINT16 counter, TPM2B_ECC_POINT **outZ1, TPM2B_ECC_POINT **outZ2)"
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.RI "TSS2_RC \fBEsys_ZGen_2Phase_Finish\fP (\fBESYS_CONTEXT\fP *esysContext, TPM2B_ECC_POINT **outZ1, TPM2B_ECC_POINT **outZ2)"
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.SH "Detailed Description"
.PP 
ESAPI function to invoke the TPM2_ZGen_2Phase command either as a one-call or in an asynchronous manner\&. 
.SH "Function Documentation"
.PP 
.SS "TSS2_RC Esys_ZGen_2Phase (\fBESYS_CONTEXT\fP * esysContext, \fBESYS_TR\fP keyA, \fBESYS_TR\fP shandle1, \fBESYS_TR\fP shandle2, \fBESYS_TR\fP shandle3, const TPM2B_ECC_POINT * inQsB, const TPM2B_ECC_POINT * inQeB, TPMI_ECC_KEY_EXCHANGE inScheme, UINT16 counter, TPM2B_ECC_POINT ** outZ1, TPM2B_ECC_POINT ** outZ2)"
One-Call function for TPM2_ZGen_2Phase
.PP
This function invokes the TPM2_ZGen_2Phase command in a one-call variant\&. This means the function will block until the TPM response is available\&. All input parameters are const\&. The memory for non-simple output parameters is allocated by the function implementation\&.
.PP
\fBParameters\fP
.RS 4
\fIesysContext\fP The \fBESYS_CONTEXT\fP\&. 
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\fIkeyA\fP Handle of an unrestricted decryption key ECC\&. 
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\fIshandle1\fP Session handle for authorization of keyA 
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\fIshandle2\fP Second session handle\&. 
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\fIshandle3\fP Third session handle\&. 
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\fIinQsB\fP Other party's static public key (Qs,B = (Xs,B, Ys,B))\&. 
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\fIinQeB\fP Other party's ephemeral public key (Qe,B = (Xe,B, Ye,B))\&. 
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\fIinScheme\fP The key exchange scheme\&. 
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\fIcounter\fP Value returned by TPM2_EC_Ephemeral()\&. 
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\fIoutZ1\fP X and Y coordinates of the computed value (scheme dependent)\&. (callee-allocated) 
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\fIoutZ2\fP X and Y coordinates of the second computed value (scheme dependent)\&. (callee-allocated) 
.RE
.PP
\fBReturn values\fP
.RS 4
\fITSS2_RC_SUCCESS\fP if the function call was a success\&. 
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\fITSS2_ESYS_RC_BAD_REFERENCE\fP if the esysContext or required input pointers or required output handle references are NULL\&. 
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\fITSS2_ESYS_RC_BAD_CONTEXT\fP if esysContext corruption is detected\&. 
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\fITSS2_ESYS_RC_MEMORY\fP if the ESAPI cannot allocate enough memory for internal operations or return parameters\&. 
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\fITSS2_ESYS_RC_BAD_SEQUENCE\fP if the context has an asynchronous operation already pending\&. 
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\fITSS2_ESYS_RC_INSUFFICIENT_RESPONSE\fP if the TPM's response does not at least contain the tag, response length, and response code\&. 
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\fITSS2_ESYS_RC_MALFORMED_RESPONSE\fP if the TPM's response is corrupted\&. 
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\fITSS2_ESYS_RC_RSP_AUTH_FAILED\fP if the response HMAC from the TPM did not verify\&. 
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\fITSS2_ESYS_RC_MULTIPLE_DECRYPT_SESSIONS\fP if more than one session has the 'decrypt' attribute bit set\&. 
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\fITSS2_ESYS_RC_MULTIPLE_ENCRYPT_SESSIONS\fP if more than one session has the 'encrypt' attribute bit set\&. 
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\fITSS2_ESYS_RC_BAD_TR\fP if any of the ESYS_TR objects are unknown to the \fBESYS_CONTEXT\fP or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE\&. 
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\fITSS2_RCs\fP produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally\&. 
.RE
.PP

.SS "TSS2_RC Esys_ZGen_2Phase_Async (\fBESYS_CONTEXT\fP * esysContext, \fBESYS_TR\fP keyA, \fBESYS_TR\fP shandle1, \fBESYS_TR\fP shandle2, \fBESYS_TR\fP shandle3, const TPM2B_ECC_POINT * inQsB, const TPM2B_ECC_POINT * inQeB, TPMI_ECC_KEY_EXCHANGE inScheme, UINT16 counter)"
Asynchronous function for TPM2_ZGen_2Phase
.PP
This function invokes the TPM2_ZGen_2Phase command in a asynchronous variant\&. This means the function will return as soon as the command has been sent downwards the stack to the TPM\&. All input parameters are const\&. In order to retrieve the TPM's response call Esys_ZGen_2Phase_Finish\&.
.PP
\fBParameters\fP
.RS 4
\fIesysContext\fP The \fBESYS_CONTEXT\fP\&. 
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\fIkeyA\fP Handle of an unrestricted decryption key ECC\&. 
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\fIshandle1\fP Session handle for authorization of keyA 
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\fIshandle2\fP Second session handle\&. 
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\fIshandle3\fP Third session handle\&. 
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\fIinQsB\fP Other party's static public key (Qs,B = (Xs,B, Ys,B))\&. 
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\fIinQeB\fP Other party's ephemeral public key (Qe,B = (Xe,B, Ye,B))\&. 
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\fIinScheme\fP The key exchange scheme\&. 
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\fIcounter\fP Value returned by TPM2_EC_Ephemeral()\&. 
.RE
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\fBReturn values\fP
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\fIESYS_RC_SUCCESS\fP if the function call was a success\&. 
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\fITSS2_ESYS_RC_BAD_REFERENCE\fP if the esysContext or required input pointers or required output handle references are NULL\&. 
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\fITSS2_ESYS_RC_BAD_CONTEXT\fP if esysContext corruption is detected\&. 
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\fITSS2_ESYS_RC_MEMORY\fP if the ESAPI cannot allocate enough memory for internal operations or return parameters\&. 
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\fITSS2_RCs\fP produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally\&. 
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\fITSS2_ESYS_RC_MULTIPLE_DECRYPT_SESSIONS\fP if more than one session has the 'decrypt' attribute bit set\&. 
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\fITSS2_ESYS_RC_MULTIPLE_ENCRYPT_SESSIONS\fP if more than one session has the 'encrypt' attribute bit set\&. 
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\fITSS2_ESYS_RC_BAD_TR\fP if any of the ESYS_TR objects are unknown to the \fBESYS_CONTEXT\fP or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE\&. 
.RE
.PP

.SS "TSS2_RC Esys_ZGen_2Phase_Finish (\fBESYS_CONTEXT\fP * esysContext, TPM2B_ECC_POINT ** outZ1, TPM2B_ECC_POINT ** outZ2)"
Asynchronous finish function for TPM2_ZGen_2Phase
.PP
This function returns the results of a TPM2_ZGen_2Phase command invoked via Esys_ZGen_2Phase_Finish\&. All non-simple output parameters are allocated by the function's implementation\&. NULL can be passed for every output parameter if the value is not required\&.
.PP
\fBParameters\fP
.RS 4
\fIesysContext\fP The \fBESYS_CONTEXT\fP\&. 
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\fIoutZ1\fP X and Y coordinates of the computed value (scheme dependent)\&. (callee-allocated) 
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\fIoutZ2\fP X and Y coordinates of the second computed value (scheme dependent)\&. (callee-allocated) 
.RE
.PP
\fBReturn values\fP
.RS 4
\fITSS2_RC_SUCCESS\fP on success 
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\fIESYS_RC_SUCCESS\fP if the function call was a success\&. 
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\fITSS2_ESYS_RC_BAD_REFERENCE\fP if the esysContext or required input pointers or required output handle references are NULL\&. 
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\fITSS2_ESYS_RC_BAD_CONTEXT\fP if esysContext corruption is detected\&. 
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\fITSS2_ESYS_RC_MEMORY\fP if the ESAPI cannot allocate enough memory for internal operations or return parameters\&. 
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\fITSS2_ESYS_RC_BAD_SEQUENCE\fP if the context has an asynchronous operation already pending\&. 
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\fITSS2_ESYS_RC_TRY_AGAIN\fP if the timeout counter expires before the TPM response is received\&. 
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\fITSS2_ESYS_RC_INSUFFICIENT_RESPONSE\fP if the TPM's response does not at least contain the tag, response length, and response code\&. 
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\fITSS2_ESYS_RC_RSP_AUTH_FAILED\fP if the response HMAC from the TPM did not verify\&. 
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\fITSS2_ESYS_RC_MALFORMED_RESPONSE\fP if the TPM's response is corrupted\&. 
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\fITSS2_RCs\fP produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally\&. 
.RE
.PP

.SH "Author"
.PP 
Generated automatically by Doxygen for tpm2-tss from the source code\&.