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ConceptOne-Time Pad / OTP / 一次性密码本

One-Time Key Stream

An encryption method that is theoretically unconditionally secure. It requires the key to be fully random, equal in length to the plaintext, used only once, and kept strictly secret.

Timeline (last 90 days)

Oct 18

Sigsaly used one-time key paper tapes, synchronized before each call, with the key voided after the call ended, theoretically achieving unconditional security.

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Oct 18

A one-time pad requires the key to be completely random, equal in length to the plaintext, used only once, and kept strictly secret; when these conditions are met, the ciphertext contains no plaintext information, which is the unconditional security proven by Shannon.

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