RSA Security has never officially released the algorithm; Rivest has, however, linked to the English Wikipedia article on RC4 in his own course notes in 2008 and confirmed the history of RC4 and its code in a 2014 paper by him.
RSA Security从来没有正式公布这个算法，罗纳德·李维斯特在2008年的自己的课程笔记中与RC4的英文维基百科文章，并且在2014年的文件中确认了RC4及其代码的历史。