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It is against this backdrop that Godwin discovers a fifty-year-old family secret , one which changes everything he thought he knew about his father , and his own place in the world . Tutorial : This approach has long been discredited in cryptography , where the phrase refers to trying to keep an algorithm secret , rather than just concealing the keys [ Schn ] . The British kept the agreement secret , so as not to complicate their relations with the Ottoman regime . Grand in opening his letter to Mr. Carmichael and then giving it to the French Ambassador ; wrote at once to the Ambassador [ copy enclosed , 3 p. ] regretting only the part which reffered to him personally , and promising to keep the other matter secret , in accordance with Franklin 's request . And in Tennessee we passed legislation to keep the identity of the executioner secret , as if there is something to be ashamed of in this process .