New Hampshire's "revenge porn" law is RSA 644:9-a, Nonconsensual dissemination of private sexual images. The law went into effect July 19, 2016. A more accurate term than "revenge porn" is "nonconsensual pornography" (NCP): the sharing of private sexual images without consent. In addition to RSA 644:9-a there are other, related laws that could be violated when sharing these private images including: child pornography, unlawful surveillance, dissemination of video and images obtained through unlawful surveillance, sexual assault, aggravated harassment, domestic violence, cyber-stalking, stalking, extortion, and hacking.
Federal legislation has been proposed but has not (as of the date of this post) been enacted into law.