Deletion of Quintuple-DES

Comment: Independently of the technical merits (or otherwise) of the idea, the lead sentence (with my emphasis) is "The concept is ''introduced here'' of extending Triple-DES to five keys ...". Ie it is |original research, and #OR|Wikipedia is not the place for "Primary (original) research, such as proposing theories and solutions
Stance: delete
Cited policy: Wikipedia:No original research (WP:OR||WP:NOT)

Comment: no |reliable sources can be found. No cryptographer would ever design this, even an amateur like me can point holes in the idea -- the real cryptographic strength still at most 2112 like Triple-DES, despite 280-bit key, due to meet-in-the-middle attack; DES's small 64-bit block size is increasingly a problem with today's multi-terabyte storage devices and 10Gbit network interfaces. Also factual errors, DES hasn't "survived the test-of-time", there's a faster-than-brute-force attack http://crypto.junod.info/sac01.pdf
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)