| 摘要 |
<p>A method and apparatus for data transmitting are provided. The data to be transmitted is encrypted with a symmetric form Master Encryption Key (MEK), and the MEK is encrypted with an asymmetric key, thus decrypting the asymmetric key needs processing mass operations, thereby the asymmetric key is difficult to be cracked. Besides that, the MEK can be updated to a key different from that of last time during each transmitting process, thus even if the channel is eavesdropped, attackers cannot obtain the master encryption key to be used next time according to the eavesdropped content, therefore the security of data transmitting next time is ensured.</p> |
