Triple DES uses
a. 168 bit keys on 64-bit blocks of plain text
b. Working on 64-bit blocks of plain text and 56 bit keys by applying DES algorithm for three rounds.
c. Works with 144 bit blocks of plain text and applies DES algorithm once.
d. Uses 128 bit blocks of plain text and 112 bit keys and apply DES algorithm thrice.
a. 168 bit keys on 64-bit blocks of plain text
b. Working on 64-bit blocks of plain text and 56 bit keys by applying DES algorithm for three rounds.
c. Works with 144 bit blocks of plain text and applies DES algorithm once.
d. Uses 128 bit blocks of plain text and 112 bit keys and apply DES algorithm thrice.