Attacks and analysis on RC4?
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RC4 is a stream cipher that has been the subject of various attacks and analysis. One approach is the use of Mantin biases to recover plaintexts from RC4-encrypted traffic. These biases were found to be sometimes non-existent and sometimes stronger than originally predicted. A plaintext recovery attack was developed targeting two unknown bytes of plaintext located close to known plaintext sequences. The attack was extended to recover longer plaintexts, such as HTTP session cookies and user passwords. Another analysis focused on the security of RC4 against algebraic attacks. It was shown that RC4 has unique algebraic properties in its main operations, making it infeasible to solve the resulting system of equations. Additionally, the security of RC4 in SSL/TLS was evaluated with cookie masking mechanisms, which were found to only moderately increase its security. Finally, a cache timing attack model was used to recover the internal state of RC4, demonstrating the vulnerability of the cipher in this scenario.
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| Papers (5) | Insight |
|---|---|
| The paper presents a cache timing attack model for RC4 and proposes a state recovery analysis using a belief propagation algorithm. It does not specifically mention other attacks or analysis on RC4. | |
Open access•Posted Content | The paper provides a detailed analysis of attacks on RC4 in SSL/TLS, specifically focusing on the Mantin biases. It shows that the proposed cookie masking methods only moderately increase the security of RC4 in SSL/TLS. |
Open access 01 Jan 2010 10 Citations | The paper provides an algebraic analysis of the RC4 family of stream ciphers and evaluates its security against algebraic attacks. It concludes that the full RC4 stream cipher seems to be immune to algebraic attacks at present. |
Open access•Proceedings Article 01 Jan 2010 8 Citations | The paper provides an algebraic analysis of the RC4 family of stream ciphers and evaluates its security against algebraic attacks. It concludes that the full RC4 stream cipher seems to be immune to algebraic attacks at present. |
| The paper discusses the analysis and exploitation of Mantin biases in RC4, and presents attacks targeting adjacent pairs of unknown plaintext bytes. It also extends the analysis to multiple unknown bytes and reports on experiments for this setting. |
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