What kept nagging me while reading the article was why aren't law enforcement officials taught to crack these types of codes? If your job is law enforcement, j

What kept nagging me while reading the article was why aren't law enforcement officials taught to crack these types of codes? If your job is law enforcement, just having a simple understanding of the types of simple cyphers which criminals use seems like it would be invaluable. My next thoughts were a. "Would a reasonable set of law enforcement officials actually be able to learn how a simple cypher worked?", b. "If a large enough percentage of law enforcement could crack those types of codes, would the gang members come up with more complex cyphers?", and c. "How hard is it to smuggle a one time pad into prison?".