Cryptology - Unofficial St. Mary's College of California Web Site

7.10. EXERCISES 125
2. Little Miss Muffet sat on a tuffet. Keyword CURDS.
3. Humpty Dumpty sat on a wall. Keyword HORSES.
4. Old Mother Hubbard went to her cupboard. Keyword DOG.
5. Decipher the first line of the Mother Goose rhymes using a Vigenère cipher
with the given keyword.
(a) FAVOR JDCMC HWXRK QPMLV DIEP. Keyword WATER.
(b) OWELE ZYISX GJAEK KFREL KR. Keyword GREAT.
(c) JOJPL RAMVO PWKSV WESDA OBWSP. Keyword CANDLE.
(d) BWQOH XFEAX HMKHO LUMAT TTOI. Keyword TAMBOURINE.
6. Decipher the first line of the Mother Goose rhymes using a Vigenère cipher
with the given keyword.
(a) HWPQE LDBIY JLXLR ORVT. Keyword POCKET.
(b) JRSII SWOJE QYFCP FGCJ. Keyword BE ONE.
(c) WLWHI ONREG TNEDN ELIBB WSXNZ N. Keyword RAIN.
(d) KYAGO WALVF YYZKJ VVGCI RVTKL V. Keyword ORANGE HER.
7. Decipher the first line of the Mother Goose rhymes using a Beaufort cipher
with the given keyword.
(a) ZMKWA WTWNP KNVGE ZBOUE HFBHD OBGKA SCUFR OQZTS D. Keyword
STONE.
(b) WWEYQ YISKG EXAAV ESNAM MRX. Keyword ERIE.
(c) RUBNY MQZXH PBOTN ZBZPH LQSIU AMZXQ KNLPH YMFNU M. Keyword
DUSTY.
(d) BZXFK QNCCK IJXOL CDUAU ZOBKP VABCU LQOIK RWZAW MSPEW MURO.
Keyword CHOICES.
8. Decipher the first line of the Mother Goose rhymes using a Variant cipher
with the given keyword.
(a) QNAVF TCWXS ZDDGJ SQNAR XRERL IWI. Keyword DUEL.
(b) ERZGM GNHGG WAVTZ ZVHPK VXZEO AF. Keyword SHOE.
(c) KNSXL WJBKU GDPAJ IJOSU TLDMP JWC. Keyword JUMBLIES.
(d) OKEZQ CBNPH WHNUC ZHMLG YEQLS KC. Keyword SUPPER.
9. The Confederate Army made frequent use of Vigenère ciphers during the
Civil War, calling them “court” or “diplomatic” ciphers. In 1863 the
Union forces under General Ulysses S. Grant were engaged in a siege of
Vicksburg and captured a ciphertext. Here is his report on this [Bates].