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tpm_sealdata(3)       DragonFly Library Functions Manual       tpm_sealdata(3)

      TPM Management - tpmUnsealFile, tpmUnsealShred, tpmUnsealStrerror

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>

TPM Management                    2005-08-10                   tpm_sealdata(3)