Which encryption algorithm is designed to protect wireless transmission data?

Wired Equivalent Privacy (WEP) is specifically designed to provide a level of security for wireless networks that is comparable to what is offered by wired networks. It was one of the earliest security protocols developed for wireless local area networks (WLANs) to secure data transmissions over radio waves. WEP aims to ensure the confidentiality of data being transmitted over a wireless network by encrypting the packets sent between devices. Although WEP has significant security flaws that have led to its obsolescence in favor of stronger protocols, its original purpose was to protect wireless data transmission.

The other options pertain to encryption and security in different contexts or environments. For instance, Advanced Encryption Standard (AES) is a robust encryption algorithm used widely across various applications, but it is not limited to wireless data. Security Access Manager (SAM) relates to access management rather than encryption. Secure Hypertext Transfer Protocol (SHTTP) is used to secure web communication but is not aimed specifically at wireless transmission data. Therefore, WEP is the answer that directly addresses the original intent behind securing wireless communications.