Knowledge Base

C

Encryption Algorithm: Rivest Cipher 2 (RC2)

Summary

Security

Encryption algorithm Rivest Cipher 2[362][363] is a block cipher[78][79][80][81] which is theoretically weakened against vulnerabilities[368][369] (eg: related-key attack[68], chosen-plaintext attack[56]).

Suggestion

Remove the cipher suite from the list of cipher suites supported by your server.

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Config Snippets

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i
NGINX
OpenSSL version: 0.9.8+
ssl_ciphers …:!RC2
i
Apache
OpenSSL version: 0.9.8+
SSLCipherSuite …:!RC2

Affected Cipher Suites