Esys_ZGen_2Phase - Man Page

TSS2_RC Esys_ZGen_2Phase_Async (ESYS_CONTEXT *esysContext, ESYS_TR keyA, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_ECC_POINT *inQsB, const TPM2B_ECC_POINT *inQeB, TPMI_ECC_KEY_EXCHANGE inScheme, UINT16 counter)
TSS2_RC Esys_ZGen_2Phase (ESYS_CONTEXT *esysContext, ESYS_TR keyA, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR 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)
TSS2_RC Esys_ZGen_2Phase_Finish (ESYS_CONTEXT *esysContext, TPM2B_ECC_POINT **outZ1, TPM2B_ECC_POINT **outZ2)

One-Call function for TPM2_ZGen_2Phase

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.

Parameters

esysContext The ESYS_CONTEXT.
keyA Handle of an unrestricted decryption key ECC.
shandle1 Session handle for authorization of keyA
shandle2 Second session handle.
shandle3 Third session handle.
inQsB Other party's static public key (Qs,B = (Xs,B, Ys,B)).
inQeB Other party's ephemeral public key (Qe,B = (Xe,B, Ye,B)).
inScheme The key exchange scheme.
counter Value returned by TPM2_EC_Ephemeral().
outZ1 X and Y coordinates of the computed value (scheme dependent). (callee-allocated)
outZ2 X and Y coordinates of the second computed value (scheme dependent). (callee-allocated)

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_ESYS_RC_BAD_REFERENCE if the esysContext or required input pointers or required output handle references are NULL.
TSS2_ESYS_RC_BAD_CONTEXT if esysContext corruption is detected.
TSS2_ESYS_RC_MEMORY if the ESAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_ESYS_RC_BAD_SEQUENCE if the context has an asynchronous operation already pending.
TSS2_ESYS_RC_INSUFFICIENT_RESPONSE if the TPM's response does not at least contain the tag, response length, and response code.
TSS2_ESYS_RC_MALFORMED_RESPONSE if the TPM's response is corrupted.
TSS2_ESYS_RC_RSP_AUTH_FAILED if the response HMAC from the TPM did not verify.
TSS2_ESYS_RC_MULTIPLE_DECRYPT_SESSIONS if more than one session has the 'decrypt' attribute bit set.
TSS2_ESYS_RC_MULTIPLE_ENCRYPT_SESSIONS if more than one session has the 'encrypt' attribute bit set.
TSS2_ESYS_RC_BAD_TR if any of the ESYS_TR objects are unknown to the ESYS_CONTEXT or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE.
TSS2_RCs produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally.

Asynchronous function for TPM2_ZGen_2Phase

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.

Parameters

esysContext The ESYS_CONTEXT.
keyA Handle of an unrestricted decryption key ECC.
shandle1 Session handle for authorization of keyA
shandle2 Second session handle.
shandle3 Third session handle.
inQsB Other party's static public key (Qs,B = (Xs,B, Ys,B)).
inQeB Other party's ephemeral public key (Qe,B = (Xe,B, Ye,B)).
inScheme The key exchange scheme.
counter Value returned by TPM2_EC_Ephemeral().

Return values

ESYS_RC_SUCCESS if the function call was a success.
TSS2_ESYS_RC_BAD_REFERENCE if the esysContext or required input pointers or required output handle references are NULL.
TSS2_ESYS_RC_BAD_CONTEXT if esysContext corruption is detected.
TSS2_ESYS_RC_MEMORY if the ESAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_RCs produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally.
TSS2_ESYS_RC_MULTIPLE_DECRYPT_SESSIONS if more than one session has the 'decrypt' attribute bit set.
TSS2_ESYS_RC_MULTIPLE_ENCRYPT_SESSIONS if more than one session has the 'encrypt' attribute bit set.
TSS2_ESYS_RC_BAD_TR if any of the ESYS_TR objects are unknown to the ESYS_CONTEXT or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE.

Asynchronous finish function for TPM2_ZGen_2Phase

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.

Parameters

esysContext The ESYS_CONTEXT.
outZ1 X and Y coordinates of the computed value (scheme dependent). (callee-allocated)
outZ2 X and Y coordinates of the second computed value (scheme dependent). (callee-allocated)

Return values

TSS2_RC_SUCCESS on success
ESYS_RC_SUCCESS if the function call was a success.
TSS2_ESYS_RC_BAD_REFERENCE if the esysContext or required input pointers or required output handle references are NULL.
TSS2_ESYS_RC_BAD_CONTEXT if esysContext corruption is detected.
TSS2_ESYS_RC_MEMORY if the ESAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_ESYS_RC_BAD_SEQUENCE if the context has an asynchronous operation already pending.
TSS2_ESYS_RC_TRY_AGAIN if the timeout counter expires before the TPM response is received.
TSS2_ESYS_RC_INSUFFICIENT_RESPONSE if the TPM's response does not at least contain the tag, response length, and response code.
TSS2_ESYS_RC_RSP_AUTH_FAILED if the response HMAC from the TPM did not verify.
TSS2_ESYS_RC_MALFORMED_RESPONSE if the TPM's response is corrupted.
TSS2_RCs produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally.