Method for inserting/removal padding from packets
View Patent ↗The invention relates to the field of data packet management, and more specifically to the field of managing of data packets in such a manner that power consumption is reduced, such reduction being especially beneficial for portable device applications. In accordance with an embodiment of the invention there is provided a method of handling and manipulating data wherein padding and unpadding operations for a packet of data are performed at the transmission/reception of a packet from a network, and data handling is minimized within the portable device. According to another embodiment of the invention there is provided a method of encryption for packet data absent the padding data.
1. A method for performing a ciphering operation on a packet received by a device implementing a cryptographic engine using a processor, comprising:
receiving by the device implementing a cryptographic engine an asynchronous packet comprising a plurality of data bits and a plurality of padding bits;
counting the data bits in the received padded packet;
removing the padding bits from the received padded packet within said device; and
storing the data bits in the asynchronous packet, after removal of the padding bits, in a memory for retrieval by the processor within said device;
performing, by the cryptographic engine the cipher operation on the data bits stored in said memory to create ciphered data in said device thereby reducing power consumption of said processor;
adding padding bits to the ciphered data; and
transmitting the ciphered data and the added padding bits into a network.
2. A method according to claim 1 , wherein the device is a wireless communication device.
3. A method according to claim 2 , wherein the padded packet comprises an Ethernet packet.
4. A method according to claim 1 , wherein the device is a battery-powered device.