Jun 30, 2016 · Why KCV is 4 bytes if 3des encryption of a "zero block" yields 8? In other words - there is a mistake somewhere, you need to nail it down. Try a different online tool, check if the result is the …

Let me just see if I understand this correctly. The absolute security of a two-key 3DES EDE (or said differently, three-key EDE where K1 == K3) scheme is very near identical to that of a three …

Sep 19, 2017 · What it says on the tin. Is it still used in things like TLS?

Jul 28, 2022 · I came across DES-EDE3-CBC and a quick search didn't yield a clear explanation of what it is. Clearly, DES is the Data Encryption Standard and CBC is the Cipher Block Chaining mode. …

Mar 2, 2015 · I have heard some Info Sec colleagues talking about creating an AES key in preference to a DES or 3DES key but I don't know the difference; I thought a key was just a random string of bits? …

Apr 19, 2024 · We know that NIST disallows TDES (PDF). So why is PCI still allowing DUKPT TDES? They do use one unique key per transaction. Is there any supporting logic or official statement for it?

3DES decryption is thus to 3DES encryption what DES decryption is to DES encryption; the main external difference between 3DES and DES being the larger key. Because the plaintext is …

May 14, 2015 · How can I apply the Meet-in-the-Middle attack to the 3DES algorithm, and why does the literature say that 3DES is more secure than DES?

Oct 15, 2020 · 2 When two of the three keys with 3DES are the same, you are using a 2*56-bit keyspace that would need to be brute forced. So, when K1=K3, the brute force difficulty will be 2^112. As …

Mar 27, 2015 · 5 I read about 3DES encryption but I don't understand exactly what the specific meaning of key size is. For example I found that 3DES supports 64, 128, 192, and 256 bits key size. What are …