lecture11_alomari_Compatibility_Mode_2

Alomari cis ju single length mdcs matyas meyer oseas

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Unformatted text preview: s-Meyer-Oseas Davies-Meyer hash Miyaguchi-Preneel hash 9 DOUBLE-LENGTH MDCS MDC-2, and MDC-4. Encryption E is the DES encryption function. Padding might be necessary in all cases. Unambiguous is used! Copyrights are reserved @ 2011 for Dr. Alomari, CIS, JU Requires 2 (for MDC-2) and 4 (for MDC-4) Encryption operations. 10 Copyrights are reserved @ 2011 for Dr. Alomari, CIS, JU 5 MDC-2 – BLOCK DIAGRAM! E: DES g, ĝ: mapping function. Input is 64 bits 32 bits 32 bits C, D are the left and right halves (32 bits each), respectively. Copyrights are reserved @ 2011 for Dr. Alomari, CIS, JU A, B are the left and right halves (32 bits each), respectively. X is multiple of 64 bits using unambiguous padding. 11 Notes in colored font are for illustration purposes only. 64 bits 64 bits Output is 128 bits MDC-2 ALGORITHM Copyrights are reserved @ 2011 for Dr. Alomari, CIS, JU 12 Copyrights are reserved @ 2011 for Dr....
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