PAGE_49_KRLR  (Swedish Enigma M3 intercept):


Bild "Swedish Enigma M3 intercept"
Swedish Enigma M3 intercept
ENIGMA M3 MESSAGE KEY (Swedish Enigma M3 intercept KRLR):

Type: M3
Reflector: B
Wheel Order: 7 4 6
Ring Settings: A G W  or: A G J
Message Key: R P R  or: R P E
Plugs: BM DX EW GP JO KV NZ RT

Picture source and copyright: http://signalspaning.se



Solution of naval Enigma message KRLR of 21 February 1940:

Message intercepted by Norrköping police radio station at 0015 on 21/2 1940:
2336/87   31   KRLR NIAB PBQO MEWL LMJF BXKP ZNBH RGLU GVHJ BXYP SEAC OXOT BQRW VTPV VYHL LDOC QQKI WVAM JNFA DSUN AVMJ GJIB MUGB WWRK JBZN HVEL OGZH TISL TUWS KRLR NIAB

Message indicator groups: KRLR NIAB

Ciphertext (without indicator groups):

PBQOMEWLLMJFBXKPZNBHRGLUGVHJBXYPSEACOXOTBQRWVTPVVYHLLDOCQQKIWVAMJNFADSUNAVMJGJIBMUGBWWRKJBZNHVELOGZHTISLTUWS

Plaintext:

VERWALTUNGSAMTREICHSGERICHTARBEITSLAGERNICHTAUFSCHLAGENVCNSTDMQWZVGNVMBCPDGKPFQZWTRLDMFNGHSRDTFZGLDKCVLMNHGF

Interpretation (Plaintext with word divisions and with garbles corrected):

Verwaltungsamt; Reichsgericht; Arbeitslager. Nicht aufschlagen.
[Rest ist Füllsel.]

Translation (preliminary):

Administrative Office; Supreme Court; Work camp. Do not open.
[Remainder is padding.]

Note:

  • This is a dummy message.
  • Although this message was sent at 0015 on 21 February, its time-of-origin group (2336) indicates that it was enciphered with the key for 20 February.

Broken by Dan Girard