Some examples of popular and well-respected symmetric algorithms include Twofish , Serpent , ORGANIZATION@1 -LRB- PERSON@1 -RRB- , Blowfish , CAST5 , RC4 , TDES , and IDEA .

Examples of popular symmetric cyphers include Twofish , Serpent , ORGANIZATION@1 -LRB- aka Rijndael -RRB- , Blowfish , CAST5 , RC4 , TDES , and IDEA .
