A METHOD OF SELECTING ENCRYPTING ARITHMETIC FOR REALIZING COMMUNICATION OF SECRECY

摘要

The invention discloses encryptions to be used for freely selected method for realizing one kind of the arithmetic of secret communication, is characterized in that: increasing the position of the consumption index (CI), synchronously increases the judgement for the arithmetic that encryption is supported by CI, active user and net; Support to be more than a kind of encrypted mathematical as corn net (CN), if CI=1 and user equipment (UE) and CN all support the standard of encrypted mathematical, when selecting the standard with the arithmetic encrypted mathematical of coded communication; Interrupt the link of communication; If CI=0, UE and CN support the independently developed unstandarded of encrypted mathematical, the arithmetic of encryption is selected; Interrupt the link of communication; When if UE supports the standard of encrypted mathematical only to support standard, encrypted mathematical, when directly selecting the standard of encrypted mathematical; Interrupt the link of communication. Method makes user's quantity of the catch that can independently meet selection arithmetic with encrypted mathematical for secret transmission, further ensure that the requirement of user benefit and service quality.