Patent ID: 7961875
Filing Date: 2011-06-14
Classification: H04L,H04W

Abstract:
1. A method for ciphering and transmitting data, to be used by a communication device being arranged to transmit data through a first data port according to a first transmission protocol, and to form ciphered data by subjecting the data to a ciphering algorithm being fed with a first set of ciphering parameters, comprising a ciphering parameter CP 5 having a bit length, CP 5 BL; said device being further arranged to transmit data through a second data port according to an alternative transmission protocol, said method comprising the steps of: defining an alternative ciphering parameter, ACP, having a bit length being equal to said CP forming a second set of ciphering parameters by substituting said CP forming ciphered data by subjecting the data to said ciphering algorithm being fed with said second set of ciphering parameters, transmitting said ciphered data through said second data port according to said alternative transmission protocol, and wherein said ciphering algorithm is an encryption algorithm and said first set of ciphering parameters is a first set of encryption parameters comprising a first encryption parameter, EP