| 摘要 |
In an encryption and decryption system, information in plaintext is encrypted by adding to each group of signals in the information a digital chaos signal in accordance with a chaos function, a delay, an initial value, and parameters of the chaos function determined using a cryptographic key which can be any length and any combination of letters, numerals, or words. The encrypted information is decrypted by decrypting each group of signals in the encrypted information using a digital chaos signal which is generated using the same key as that used in the encryption. Accordingly, it is possible to provide enhanced secrecy and to perform encryption and decryption of information at high speed.
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