Fapi_Unseal - Man Page

Synopsis

Functions

TSS2_RC Fapi_Unseal (FAPI_CONTEXT *context, char const *path, uint8_t **data, size_t *size)
TSS2_RC Fapi_Unseal_Async (FAPI_CONTEXT *context, char const *path)
TSS2_RC Fapi_Unseal_Finish (FAPI_CONTEXT *context, uint8_t **data, size_t *size)

Detailed Description

FAPI functions to invoke Unseal either as one-call or in an asynchronous manner.

Function Documentation

Fapi_Unseal (FAPI_CONTEXT * context, char const * path, uint8_t ** data, size_t * size)

One-Call function for Fapi_Unseal

Unseals data from a seal in the FAPI metadata store.

Parameters

context The FAPI_CONTEXT
path The path to the sealed data
data The decrypted data after unsealing. May be NULL
size The size of data in bytes. May be NULL

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE if context or path is NULL.
TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
TSS2_FAPI_RC_BAD_PATH if path does not point to a sealed data object.
TSS2_FAPI_RC_BAD_VALUE if the digestSize is zero.
TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its config file.
TSS2_FAPI_RC_TRY_AGAIN if an I/O operation is not finished yet and this function needs to be called again.
TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found during authorization.
TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found.
TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred.
TSS2_FAPI_RC_SIGNATURE_VERIFICATION_FAILED if the signature could not be verified
TSS2_ESYS_RC_* possible error codes of ESAPI.
TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned.
TSS2_FAPI_RC_AUTHORIZATION_UNKNOWN if a required authorization callback is not set.
TSS2_FAPI_RC_AUTHORIZATION_FAILED if the authorization attempt fails.
TSS2_FAPI_RC_POLICY_UNKNOWN if policy search for a certain policy digest was not successful.

Fapi_Unseal_Async (FAPI_CONTEXT * context, char const * path)

Asynchronous function for Fapi_Unseal

Unseals data from a seal in the FAPI metadata store.

Call Fapi_Unseal_Finish to finish the execution of this command.

Parameters

context The FAPI_CONTEXT
path The path to the sealed data

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE if context or path is NULL.
TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
TSS2_FAPI_RC_BAD_PATH if path does not point to a sealed data object.
TSS2_FAPI_RC_BAD_VALUE if the digestSize is zero.
TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its config file.

Fapi_Unseal_Finish (FAPI_CONTEXT * context, uint8_t ** data, size_t * size)

Asynchronous finish function for Fapi_Unseal

This function should be called after a previous Fapi_Unseal_Async.

Parameters

context The FAPI_CONTEXT
data The decrypted data after unsealing. May be NULL
size The size of data in bytes. May be NULL

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE if context is NULL.
TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_TRY_AGAIN if the asynchronous operation is not yet complete. Call this function again later.
TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found during authorization.
TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found.
TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into the function.
TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred.
TSS2_FAPI_RC_SIGNATURE_VERIFICATION_FAILED if the signature could not be verified
TSS2_ESYS_RC_* possible error codes of ESAPI.
TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned.
TSS2_FAPI_RC_BAD_PATH if the path is used in inappropriate context or contains illegal characters.
TSS2_FAPI_RC_AUTHORIZATION_UNKNOWN if a required authorization callback is not set.
TSS2_FAPI_RC_AUTHORIZATION_FAILED if the authorization attempt fails.
TSS2_FAPI_RC_POLICY_UNKNOWN if policy search for a certain policy digest was not successful.

Author

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Info

Sat Jul 10 2021 Version 3.1.0 tpm2-tss