NAME
tpmUnsealFile, tpmUnsealShred, tpmUnsealStrerror - unseal routines
SYNOPSIS
#include <tpm_unseal/tpm_unseal.h>
int tpmUnsealFile(char* file, char** data, int* size);
void tpmUnsealShred(char* data, int size);
char* tpmUnsealStrerror(int rc);
DESCRIPTION
The functions in the tpmUnseal family allow access to a piece of
sensitive data that has been sealed to the TPM configuration of a given
system if the conditions are right, that is the SRK has not changed and
the PCRS (if any) specified at seal time are of the appropriate value.
The tpmUnsealFile function returns the contents of the file unsealed in
the data buffer. The memory at *data must be freed by the caller.
The tpmUnsealShred function will zero and free the memory.
The tpmUnsealStrerror function will convert the return code from
tpmUnsealFile into a human comprehensible string using and internal
errno variable.
Return Value
The tpmUnsealFile function returns 0 on success and a negative number
on error. The tpmUnsealStrerror function returns the error string on
success and the empty string on an error.
SEE ALSO
tpm_sealdata(1)
REPORTING BUGS
Report bugs to <trousers-users@lists.sourceforge.net>