Esys_StartAuthSession − The ESAPI function for the TPM2_StartAuthSession command.
Functions
TSS2_RC
Esys_StartAuthSession_Async (ESYS_CONTEXT
*esysContext, ESYS_TR tpmKey, ESYS_TR bind,
ESYS_TR shandle1, ESYS_TR shandle2,
ESYS_TR shandle3, const TPM2B_NONCE *nonceCaller,
TPM2_SE sessionType, const TPMT_SYM_DEF *symmetric,
TPMI_ALG_HASH authHash)
TSS2_RC Esys_StartAuthSession (ESYS_CONTEXT
*esysContext, ESYS_TR tpmKey, ESYS_TR bind,
ESYS_TR shandle1, ESYS_TR shandle2,
ESYS_TR shandle3, const TPM2B_NONCE *nonceCaller,
TPM2_SE sessionType, const TPMT_SYM_DEF *symmetric,
TPMI_ALG_HASH authHash, ESYS_TR *sessionHandle)
ESAPI function to invoke the TPM2_StartAuthSession command either as a one-call or in an asynchronous manner.
TSS2_RC
Esys_StartAuthSession (ESYS_CONTEXT * esysContext, ESYS_TR
tpmKey, ESYS_TR bind, ESYS_TR shandle1, ESYS_TR shandle2,
ESYS_TR shandle3, const TPM2B_NONCE * nonceCaller, TPM2_SE
sessionType, const TPMT_SYM_DEF * symmetric, TPMI_ALG_HASH
authHash, ESYS_TR * sessionHandle)
One-Call function for TPM2_StartAuthSession
This function invokes the TPM2_StartAuthSession 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.
tpmKey Handle of a loaded decrypt key used to encrypt
salt.
bind Entity providing the authValue.
shandle1 First session handle.
shandle2 Second session handle.
shandle3 Third session handle.
nonceCaller Initial nonceCaller, sets nonceTPM size for
the session.
sessionType Indicates the type of the session; simple
HMAC or policy (including a trial policy).
symmetric The algorithm and key size for parameter
encryption.
authHash Hash algorithm to use for the session.
sessionHandle ESYS_TR handle of ESYS resource for
TPMI_SH_AUTH_SESSION.
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.
TSS2_RC
Esys_StartAuthSession_Async (ESYS_CONTEXT * esysContext,
ESYS_TR tpmKey, ESYS_TR bind, ESYS_TR shandle1, ESYS_TR
shandle2, ESYS_TR shandle3, const TPM2B_NONCE * nonceCaller,
TPM2_SE sessionType, const TPMT_SYM_DEF * symmetric,
TPMI_ALG_HASH authHash)
Asynchronous function for TPM2_StartAuthSession
This function invokes the TPM2_StartAuthSession 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_StartAuthSession_Finish.
Parameters
esysContext The
ESYS_CONTEXT.
tpmKey Handle of a loaded decrypt key used to encrypt
salt.
bind Entity providing the authValue.
shandle1 First session handle.
shandle2 Second session handle.
shandle3 Third session handle.
nonceCaller Initial nonceCaller, sets nonceTPM size for
the session.
sessionType Indicates the type of the session; simple
HMAC or policy (including a trial policy).
symmetric The algorithm and key size for parameter
encryption.
authHash Hash algorithm to use for the session.
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.
Generated automatically by Doxygen for tpm2-tss from the source code.