In 1999, security engineers proposed TLS as a replacement for the SSL standard, which was at the time in its third version. As with SSL, TLS uses TCP port 443. Based on SSL technology, TLS incorporated many security enhancements and was eventually adopted as a replacement for SSL in most applications. Early versions of TLS supported downgrading communications to SSL v3.0 when both parties did not support TLS. However, in 2011, TLS v1.2 dropped this backward
compatibility.
In 2014, an attack known as the Padding Oracle On Downgraded Legacy Encryption (POODLE) demonstrated a significant flaw in the SSL 3.0 fallback mechanism of TLS. In an effort to remediate this vulnerability, many organizations completely dropped SSL support and now rely solely on TLS security.
Even though TLS has been in existence for more than a decade, many people still mistakenly call it SSL. For this reason, TLS has gained the nickname SSL 3.1.
CISSP的内容,证书加密在理论上,是可以防止攻击的。中间人攻击也是证书信赖错误,以为连接的是目的地证书。干坏事之前,点开看看。
