Is it permissible to work for a company that develops software for encrypting various channels (sports, movies, sex, nature), where the work is limited to testing the effectiveness of this software and ensuring that the broadcast reaches those who possess the code, without viewing the forbidden content?

The ruling on working in channel encryption programming is linked to the type of channels. If the channels broadcast forbidden content, such as sexual channels, then it is not permissible to work in their encryption, as it involves aiding in sin, due to the Almighty's saying: "And do not cooperate in sin and aggression." However, if the channels are permissible, then there is no objection to that.