sci.crypt Sandbox - Ciphers
All ciphers mode (go to professional ciphers only)
The following is the list of all ciphers which have been submitted.

At start of list | Showing ciphers 1-10 of 14 | Next 10
Cipher name: XSE-2
Description:
New XSE version. Redesigned algorithm to improve speed and (possibly) "security". Now up to 3x faster. Easy to cryptanalize...any opinion about it?
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: No breaks yet
Current score: 0 (Peak score: 0)

Cipher name: StreamBuddy
Description:
The stream creation uses 2 streams with shuffles/permutations and is XORed together to make a mixpad that is saved into and xored with the streamout->[internal state] of the cipher after each round.
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: Known plaintext by
Current score: 0 (Peak score: 17.8652)

Cipher name: XSE
Description:
XSE is a xorshift PRNG based stream cipher submitted by Stephen Cantini.
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
88359 bytes of known plaintext with the same key as the challenge
Files are here
5 note(s) entered
Best attack: No breaks yet
Current score: 135.2964 (Peak score: 135.2964)

Cipher name: Frost-C  Professional submission Third place
Description:
A fast new 16-round, 128-bit block cipher using Feistel networks. It is designed with bit swaps, rotations, four 8x8 S-boxes and matrix multiplication for diffusion.
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
2 note(s) entered
Best attack: No breaks yet
Current score: 136.4377 (Peak score: 136.4377)

Cipher name: TSC2
Description:
This is a psuedo block cipher, as it works in chunks of 32kb but can cope with partial blocks without padding. It's based on a constantly changing sbox with some additional operations.

Not scored yet
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: No breaks yet
Current score: 0 (Peak score: 0)

Cipher name: Caligo  Professional submission Second place
Description:
This is a simple block cipher with two main characteristics. The first is that there is no limitation on the block size, and the second is that the transformations are done on whole blocks (not split for s-boxes or Feistel transformations).
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: No breaks yet
Current score: 155.8517 (Peak score: 155.8517)

Cipher name: J-Crypt
Description:
This is a cellular-automata based stream cipher. Full details are available at: http://home.bellsouth.net/p/PWP-brightwave

Not scored yet

Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: No breaks yet
Current score: 0 (Peak score: 0)

Cipher name: Konton2  Professional submission
Description:
This is a stream cipher for which the keystream generation function only uses addition, rotation, and table lookups (all mod 2^32 of course). Full details are available at: http://www.geocities.com/da5id65536/
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
3 note(s) entered
Best attack: No breaks yet
Current score: 76.2072 (Peak score: 76.2072)

Cipher name: JEL
Description:
This is a 5-round Feistel type 128 bit block cipher using addition mod 2^32 and XOR in combining eight key-dependent 16x32 bit substitutions as the round function.
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
0 note(s) entered
Best attack: Chosen plaintext by
Current score: 36.9465 (Peak score: 36.9465)

Cipher name: VMPC  Professional submission First place
Description:
This is the VMPC cipher by Bartosz Zoltak
The description is copied (with permission) from http://www.vmpcfunction.com/cipher.htm, and more details on the cipher can be found on the vmpc website.
Algorithm available
0 bytes of ciphertext
0 bytes of known plaintext
0 bytes of known plaintext with the same key as the challenge
Files are here
4 note(s) entered
Best attack: No breaks yet
Current score: 215.1335 (Peak score: 215.1335)

At start of list | Showing ciphers 1-10 of 14 | Next 10