How did 3DES improve on DES?Each correct answer represents a complete solution. Choose all that apply.This type of question contains radio buttons and checkboxes for selection of options. Use Tab for navigation and Enter or space to select the option.Aoption ABy using three keysBoption BBy increasing the effective key length to 168 bitsCoption CBy making the key longerDoption DBy using two keysEoption EBy changing algorithms

3DES improved on DES in the following ways:

Option A: By using three keys - This is correct. 3DES, as the name suggests, uses three individual keys for encryption, decryption, and re-encryption. This provides a much higher level of security than DES, which uses a single key.

Option B: By increasing the effective key length to 168 bits - This is correct. The use of three keys in 3DES effectively increases the key length to 168 bits, making it significantly more difficult to crack than DES, which has a key length of 56 bits.

Option C: By making the key longer - This is partially correct. While 3DES does effectively increase the key length through the use of three keys, it does not actually make the individual keys any longer. Each key is still 56 bits long, the same as in DES.

Option D: By using two keys - This is incorrect. 3DES uses three keys, not two.

Option E: By changing algorithms - This is incorrect. 3DES does not change the underlying algorithm from DES. It simply applies it three times with three different keys.