sweet32.info Email Addresses and Contacts - KazanSEO
Summary
The website discusses the vulnerability of 64-bit block ciphers, such as TripleDES and Blowfish, commonly used in cryptographic protocols like IPsec and OpenVPN. These block ciphers encrypt data between clients and servers by dividing it into fixed-length chunks called blocks. The site highlights the "Sweet32" birthday attack that exploits the short block size of these ciphers, making them susceptible to cryptographic attacks.
The vulnerability is explained in the context of old block ciphers with a block size of 64 bits (TripleDES and Blowfish), while newer ones use larger block sizes. Despite advancements in encryption techniques, popular protocols like OpenVPN still widely enable 64-bit block ciphers. It emphasizes that even though there are no direct attacks against these specific ciphers themselves, this attack has practical implications.
Additionally, the article mentions CVE-2016-2183 and CVE-2016-6329 as associated vulnerabilities affecting cryptographic protocols or implementations. It suggests that network attackers can monitor long-lived HTTPS connections through attacks on weak or vulnerable encryption methods like blowfish which are currently enabled on many internet servers.
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