IF THE TRUTH BE TOLD
I carried on, "and I hope he'll come to our next meeting alone, which would give me more time. Then, when I meet him again, I will give him another code."
"How does this code of yours work?"
"It is simple, and yet it's not," I replied. "The main disadvantage with one-time codes is the fact I can only use them once. After that, you need a new key for each message."
"And the key is?"
"The key is the intelligence that answers the message," I explained. "Sometimes, the key might be the password. But there are other keys as well; it might be a phrase, or a sequence of numbers, or even something more uncommon."
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