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  4. Esys_ContextLoad(3)

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Esys_ContextLoad(3) tpm2-tss Esys_ContextLoad(3)

NAME

Esys_ContextLoad

SYNOPSIS

Functions


TSS2_RC Esys_ContextLoad_Async (ESYS_CONTEXT *esysContext, const TPMS_CONTEXT *context)
TSS2_RC Esys_ContextLoad (ESYS_CONTEXT *esysContext, const TPMS_CONTEXT *context, ESYS_TR *loadedHandle)
TSS2_RC Esys_ContextLoad_Finish (ESYS_CONTEXT *esysContext, ESYS_TR *loadedHandle)

Detailed Description

ESAPI function to invoke the TPM2_ContextLoad command either as a one-call or in an asynchronous manner.

Function Documentation

TSS2_RC Esys_ContextLoad (ESYS_CONTEXT * esysContext, const TPMS_CONTEXT * context, ESYS_TR * loadedHandle)

One-Call function for TPM2_ContextLoad

This function invokes the TPM2_ContextLoad 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.
context The context blob.
loadedHandle ESYS_TR handle of ESYS resource for TPMI_DH_CONTEXT.

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_RCs produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally.

TSS2_RC Esys_ContextLoad_Async (ESYS_CONTEXT * esysContext, const TPMS_CONTEXT * context)

Asynchronous function for TPM2_ContextLoad

This function invokes the TPM2_ContextLoad 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_ContextLoad_Finish.

Parameters:

esysContext The ESYS_CONTEXT.
context The context blob.

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_RC Esys_ContextLoad_Finish (ESYS_CONTEXT * esysContext, ESYS_TR * loadedHandle)

Asynchronous finish function for TPM2_ContextLoad

This function returns the results of a TPM2_ContextLoad command invoked via Esys_ContextLoad_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.
loadedHandle ESYS_TR handle of ESYS resource for TPMI_DH_CONTEXT.

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.

Author

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Wed Nov 10 2021 Version 2.3.2