In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

rc4 was initially a trade secret , but in september 1994 a description of it was anonymously posted to the cypherpunks mailing list.
rc4 was , at first , a trade secret , but in september 1994 a description of it was without revealing his or her name posted to the codepunks mailing list.