| 摘要 |
The present invention relates to the field of computer data encrypting and decrypting, especially for mobile equipments like PDA, mobile phones, smart cards and the like, which need a good trade-off between computing speed, power consumption and security strength. Embodiments of the invention provide encrypting/decrypting methods implementing simple data operation. Such methods are based on generating a pseudo-random sequence through a function of the Collatz (or Syracuse) family from a starting number used as a secret key.
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