tpm_nvram.py 文件源码

def write_key_nvram(key):
    if common.STUB_TPM:
        storage = open("tpm_nvram","wb")
        storage.write(key)
        storage.close()
        return

    owner_pw = tpm_initialize.get_tpm_metadata('owner_pw')
    keyFile = None
    try:
        # write out quote
        keyfd,keypath = tempfile.mkstemp()
        keyFile = open(keypath,"wb")
        keyFile.write(key)
        keyFile.close()
        os.close(keyfd)
        tpm_exec.run("nv_definespace -pwdo %s -in 1 -sz %d -pwdd %s -per 40004"%(owner_pw,common.BOOTSTRAP_KEY_SIZE,owner_pw))
        tpm_exec.run("nv_writevalue -pwdd %s -in 1 -if %s"%(owner_pw,keyFile.name))
    finally:
        if keyFile is not None:
            os.remove(keyFile.name)
    return