| 摘要 |
In SSL encryption communication in which a client and a server share a password, the client generates random number data, encrypts the random number data with a public key and a password, and transmits the encrypted random number data to the server, so that the client and the server safely share the random number data having a bit length longer than that of the password. Safe cryptographic communication is performed without intermediaries by using the random number data or by mutually presenting a hash value of the random number data.
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