TECHNICAL DESCRIPTION

The method involves initially fixing a global encryption key and encrypting a fragmentable file based on the key to form an encrypted file. The key is encrypted by an asymmetric encryption algorithm using a public key to obtain a global encrypted key. Values representing the encrypted key are inserted among fragments of the encrypted file to form another encrypted file that is transmitted. The file is encrypted by assigning a dynamic encrypting key to a current fragment and allocating, to value of the current fragment, a value which is function of initial value of the fragment and dynamic key.

BENEFITS

The method permits to securely transmit the large size data file in a rapid and efficient manner. The method permits to securely transmit the data in a manner robust to noise and to data loss which is caused by a fraudulent interception of data packets . The method permits to encrypt the data file in a rapid manner and permits to commence the decryption at the reception before receiving the overall encrypted file.

INDUSTRIAL APPLICATIONS

Used for securely transmitting a data e.g. image, file fragmentable into a set of fragments across a network such as Internet.

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