The 1944 Bletchley Park Cryptographic Dictionary

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RE-ENCIPHER :

1. To encipher on a different cipher or with a different setting or key on the same cipher (a message which has previously been enciphered, transmitted, and deciphered).

2. Used or misused for recipher)

RE-ENCIPHEREMENT :

A fresh encipherment of a message either on another setting or in a different cipher.

RE-ENCODE :

1. To encode (the same clear message) a second time, especially with a different code or system.

2. (Misused for re-encipher).

RE-ENCODEMENT :

i. A second encodement or encodement and recipherment of a message, especially one using a different code.

2. (Misused for re-encipherment), Especially a recipherment recognised as such by having e.g. the same time of origin, approximately the same length, contents calling for or worthy of retransmission, call-signs or other W/T features known to be associated with re-encipherments, and (when one of the two messages concerned has been read) utilized as a crib for the other message.

REFLECT :

To reproduce symmetrically as by a reflecting surface.

REFLECTOR (WHEEL) :

Umkehrwalze.

REGIONAL :

A general broadcast, similar to a Collective, to the Meteorological stations in a region (i.e. a subdivision of an area).

REGISTER n :

A tabulated record of cipher or code messages(usually of a particular system or type of traffic) including such particulars as call signs, frequency, originator, addressee, date and time of origin, indicators serial number, and beginnings and ends of the texts, etc., or as much of this as is available or known to be relevant.

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