IN THE UNITED STATES COURT OF APPEALS FOR THE FIFTH CIRCUIT United States Court of Appeals Fifth Circuit

No. 17-41116 FILED August 17, 2018 Lyle W. Cayce UNITED STATES OF AMERICA, Clerk

Plaintiff - Appellee v. HENRY FRANKLIN REDDICK,

Defendant - Appellant

Appeal from the United States District Court for the Southern District of Texas

Before KING, SOUTHWICK, and HO, Circuit Judges. JAMES C. HO, Circuit Judge: Private businesses and police investigators rely regularly on “hash values” to fight the online distribution of child pornography. Hash values are short, distinctive identifiers that enable computer users to quickly compare the contents o