In cryptography , a Feistel cipher is a symmetric structure used in the construction of block ciphers , named after the MISC@1 physicist and cryptographer PERSON@1 who did pioneering research while working for ORGANIZATION@1 -LRB- LOCATION@1 -RRB- ; it is also commonly known as a ORGANIZATION@2 network .

In cryptography , a Feistel cipher is a symmetric structure used in the construction of block ciphers , named after the MISC@2 ORGANIZATION@1 cryptographer PERSON@1 ; it is also commonly known as a ORGANIZATION@2 network .
