What criminal trial? The criminals are dead. Yeah, I know, James Comey said that maybe there's another criminal; spare me, I ain't buying it.

Also, you hire an expert to testify as to the technical details. It isn't perfect, but it is what it is; and anyway, the first thing a defense attorney will say/do in the case that the FBI prefers is to cast doubt upon the integrity of anything the FBI finds after all of the screwing around with it that's been done.