TheCodeBreakers
Perhaps surprisingly in a
bastion of human rights, its interceptions enjoyed full legality. The
statute of 1657 that established the postal service declared outright that
the mails were the best means of discovering dangerous and wicked
designs against the commonwealth. Leases of 1660 and 1663, confirmed
by the Post Office Act of 1711, permitted government officials to open
mail under warrants that they themselves issued. They sidestepped this
bothersome procedure by promulgating all-inclusive general warrants.*
The Secret Office sent interceptions en clair to the king and those in
cipher to the cryptanalysts.
They were known collectively as the Decyphering Branch. Unlike the
Secret Office, the branch had no specific location. Its tiny staff of experts
worked largely at home, receiving their material by special messenger.
Nor had it any formal organization, the senior Decypherer being merely
first among equals. More secret than the Secret Office, the branch's