EnRUPT information

EnRUPT
	One round of EnRUPT
General
First published	2008
Derived from	Corrected Block TEA
Cipher detail
Key sizes	variable
Block sizes	arbitrary, at least two words (64 bits)
Structure	Unbalanced Feistel Network
Rounds	8 * (plaintext words) + 4 * (key words)
Best public cryptanalysis
	2480 complexity meet-in-the-middle preimage attack against EnRUPT hash, collision attack with 240 time complexity; Chosen plaintext attack with 215 queries against EnRUPT block cipher

EnRUPT is a block cipher and a family of cryptographic algorithms based on XXTEA.^[1]^[5] EnRUPT hash function was submitted to SHA-3 competition but it wasn't selected to the second round.

^ ^a ^b Sean O'Neil (2008). "EnRUPT: First all-in-one symmetric cryptographic primitive" (ZIP). Workshop Record. SASC 2008 workshop.
^ Khovratovich, Dmitry; Nikolić, Ivica (2008). "Cryptanalysis of EnRUPT" (PDF).
^ Sebastiaan Indesteege; Bart Preneel (2009). "Practical Collisions for EnRUPT" (PDF). In Orr Dunkelman (ed.). Fast Software Encryption. FSE 2009. pp. 246–259. doi:10.1007/978-3-642-03317-9_15.
^ Yarrkov, Elias (2010). "Cryptanalysis of block EnRUPT" (PDF).
^ Sean O'Neil; Karsten Nohl; Luca Henzen. "EnRUPT Hash Function Specification" (PDF). Archived from the original (PDF) on 13 July 2010.

[SASC2008-1] Sean O'Neil (2008). "EnRUPT: First all-in-one symmetric cryptographic primitive" (ZIP). Workshop Record. SASC 2008 workshop.

[2] Khovratovich, Dmitry; Nikolić, Ivica (2008). "Cryptanalysis of EnRUPT" (PDF).

[3] Sebastiaan Indesteege; Bart Preneel (2009). "Practical Collisions for EnRUPT" (PDF). In Orr Dunkelman (ed.). Fast Software Encryption. FSE 2009. pp. 246–259. doi:10.1007/978-3-642-03317-9_15.

[4] Yarrkov, Elias (2010). "Cryptanalysis of block EnRUPT" (PDF).

[5] Sean O'Neil; Karsten Nohl; Luca Henzen. "EnRUPT Hash Function Specification" (PDF). Archived from the original (PDF) on 13 July 2010.

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General
One round of EnRUPT^[1]
First published	2008
Derived from	Corrected Block TEA
Cipher detail
Key sizes	variable
Block sizes	arbitrary, at least two words (64 bits)
Structure	Unbalanced Feistel Network
Rounds	8 * (plaintext words) + 4 * (key words)
Best public cryptanalysis
2⁴⁸⁰ complexity meet-in-the-middle preimage attack against EnRUPT hash,^[2] collision attack with 2⁴⁰ time complexity^[3] Chosen plaintext attack with 2¹⁵ queries against EnRUPT block cipher^[4]