Questions tagged [threefish]
A family of tweakable symmetric block-cipher algorithms with 256, 512 and 1024 bit block and key sizes.
18 questions
2 votes
1 answer
122 views
Tweakable block cipher & XTS for FDE?
When you have a tweakable block cipher such as Threefish and your objective is full disk encryption: Is XTS mode unnecessary? Do you just use the block-length data address (sector + offset, etc) as ...
- 21
4 votes
1 answer
184 views
Why do some ARX ciphers require many more rounds than others?
chacha20 has 20 rounds and even that is somewhat deceptive because the rounds alternate between columns and diagonals such that you need 2 rounds to involve the entire state. However if you compare it ...
- 41
1 vote
1 answer
128 views
Speck vs Threefish's Mix
When comparing Speck to Threefish's Mix: The difference is that Threefish uses multiple rotation constants and only a single word is rotated in contrast to Speck which uses the same rotations every ...
- 11
3 votes
1 answer
172 views
Can the Threefish tweak block cipher have its fixed 128 bit tweak size extended to match the block size (256/512/1024)
The Threefish tweak block cipher has a fixed size tweak (128 bits) and three different possible key/block sizes (256/512/1024 bits). The MCOE on-line authenticated encryption mode presents three ...
- 399
1 vote
1 answer
95 views
Can MCOE AEAD mode be modified to work with Threefish tweak block cipher and generate intermediate tags
The MCOE mode provides a really nice way to implement a nonce-misuse resistant AEAD and is based on an arbitrary tweak block cipher. A specific requirement of the tweak block cipher is that the data ...
- 399
9 votes
1 answer
3k views
Why is Threefish not widely used?
I haven't seen Threefish widely used. For example, I've seen Twofish used in file encryption software, even though it was not standardized, but I've never seen Threefish. Are there security issues?
- 147
1 vote
2 answers
460 views
Faster cipher than AES256-CBC to use for DRM purpose
I have to develop a program using a "secret" locally stored encoded program for a school project. For this I have to decipher the code on the fly to use it. The project recommend the use of ...
- 11
1 vote
1 answer
2k views
OpenSSL supports AES, Camellia, ChaCha. How about Twofish, Threefish, Serpent?
If I understood correctly, some symmetric ciphers such as AES, Camellia, ChaCha are implemented in OpenSSL (along with several older ones) but some other commonly used and proven ciphers such as ...
- 1,397
1 vote
2 answers
588 views
Some simple questions about tweakable ciphers
I have read a few papers on tweakable ciphers (didn't understand them well, though) and looked at many of the questions and answers on this exchange: What is a tweakable block cipher, Tweakable Block ...
- 1,035
3 votes
2 answers
3k views
Is there a real purpose to use Twofish, Serpent or Threefish instead of AES?
I am wondering if other ciphers like Serpent or Twofish or even Threefish have really an use in real life, because AES seems to be very efficient in most situations. But for example TrueCrypt or ...
- 37
0 votes
2 answers
235 views
How to determine which tweak was used
Imagine the following situation: you have a tweakable block cipher you have a plain text block you have a cipher text block you have the key which was used to encrypt the plain text block I have these ...
- 165
0 votes
1 answer
811 views
How to encrypt data with the Threefish cipher
I want to know how the Threefish cipher can be used to encrypt and decrypt. I tried to find out by searching the Internet but can't find a concrete answer. The only answers are theoretical in nature ...
-1 votes
1 answer
206 views
What is the difference between lightweight tweakable block cipher and tweakable block cipher?
What is the difference between lightweight tweakable block cipher and tweakable block cipher? For example, lightweight tweakable block cipher is SKINNY family, and tweakable block cipher is Threefish ...
- 3
5 votes
4 answers
9k views
Which is stronger: Threefish 1024-bit, SHACAL-2 512-bit, or AES-256?
I found some App in the Google Store, and there were features only for the PRO version: Threefish 1024-bit and SHACAL-2 512-bit. Meantime, AES-256 was available in the free version of app. So I ...
- 163
8 votes
5 answers
23k views
What encryption should I use: Blowfish, Twofish, or Threefish?
The title of this thread pretty much sums up what I'm asking: what is the best encryption to use out of the three — Blowfish, Twofish, or Threefish?
- 103