Ciphers

ZHero · 2008-07-26 04:38:50

careless25 wrote:

1)
WXFML LBH LTCH PH LBTDV PH YWD CWVH HDZK CHHL, KFCHXFZS CFNHK LBH HDZK. - BHJXHJL BFFNHJ, 31KL MK GJHKTZHDL
NO MORE HINTS!!!!

ZHero · 2008-07-26 04:43:30

careless25.. You're being CARELESS about the 'serial number' of the question which can make it difficult to answer them sequentially!?

However, i too took help from google but only to know the name of the author of the quote (how may i know that name as i'm an Indian?)

Last edited by ZHero (2008-07-26 04:45:24)

careless25 · 2008-07-26 05:00:27

ZHero wrote:

careless25.. You're being CARELESS about the 'serial number' of the question which can make it difficult to answer them sequentially!?

Sorry about the serial numbers but i m goin by a book and it makes it easier for me to check answers.

ZHero wrote:

However, i too took help from google but only to know the name of the author of the quote (how may i know that name as i'm an Indian?)

if you could decipher the message u can also decipher the name. You dont need to search google. I am indian by the way.:cool:
GOOD JOB YOU GOT IT RIGHT WITHOUT CLUES!
Hope u r safe from the bombing in India that r going on.:|

Last edited by careless25 (2008-07-26 05:11:34)

ZHero · 2008-07-26 05:11:46

careless25 wrote:

If you could decipher the message u can also decipher the name.

if you look at the puzzle closely, you'll notice that the code 'J' in the 'name' part doesn't have any clue in the 'quote' part and i didn't want to misspell the name of the president of any country...

careless25 · 2008-07-26 05:13:45

Last edited by careless25 (2008-07-26 05:17:15)

ZHero · 2008-07-26 05:20:57

careless25 wrote:

You're right!
Actually, i was so much so involved that couldn't notice that!
Thanks!
And i stay in Pune and am quite safe.. Wish you all the very best too!
May god bless us all...

careless25 · 2008-07-26 05:22:50

Dont worry about me i am a candian citizen living in USA.:D

careless25 · 2008-07-26 16:43:49

The Easy 100 puzzle number 3

Wonga kja lapqkj oaqnreraq dauesqa oa taagq njtapnkp; roa kroap nq dsqy hefnji hnqrefaq ejc daukhnji qslapnkp. - Oajpy U. Gnjf

ZHero · 2008-07-26 23:31:35

Solved

Very nice quote by the way...

careless25 · 2008-07-27 03:06:41

Great Job!
How about number 2?

careless25 · 2008-07-27 18:21:41

TE100 (The Easy 100)
4)
I CIWQND GL I YNRROU UFO RNWXL BOA FGL AECDNRRI UFNW KFN LAW GL LFGWGWH, CAK UIWKL GK CIMQ KFN EGWAKN GK CNHGWL KO DIGW. - EIDQ KUIGW

5)
CFF NILQN IT MIGJSQUL ULLILN CLU HIW QSLHAHE SJ. YIS'P OU NSLJLANUP QI DHIW QRU HSGOUL IT PIMQILN WRI MFCAG QRUY CLU QLUCQAHE JLUEHCHQ GUH. - ANCCM CNAGIV

6)
JR RWMIRY YMJPQ KE JNM RTM WAFF PMANIQ; JR RTARPY, RTM WAR; JIG JR EKPRY, RTM BSGNHMIR. - UMIBJHAI EPJICFAI

7)
NJEFL YMUQ RCLAEQ IERMQE YMU OMCLT FT KY SOMTS. - IELDFKCL RQFLHJCL

And still awaiting number 2 from The Easy 100.

careless25 · 2008-07-27 18:32:40

HIDDEN KEYS

There are lots of ways to make a simple substitution cipher. One already introduced is the 'random scramble'; where each leter of the alphabet is replaced with another letter from a randomly scrambled cipher alphabet (also known as the Kama Sutra cipher, since it has so many different combinations).

In practice, the random method can be cumbersome. Throughout history, ciphers have been used not simply for fun, but as a vitally important way of seeding a secret message from a sender to a reciever.

A better cipher system is one that allows the sender to encrypt a message quickly, and the reciever to decrypt it just as quickly. If there is a pattern to the scrambling, that makes things easier to remember, and helps keep the sende and receiver in synch. The reciever does not need to 'puzzle out' the plaintextmessage, but instead can quickly create plaintext to ciphertext table.

CAESAR CIPHER

The simplest way of creating a non-random cipher alphabet is called a 'Caesar cipher' after the method uce by Julius Caesar's army. Each plaintext letter is encrypted by shifting it forward three places in the alphabet. An 'A' becomes a 'D', a 'B' becomes an 'E', and so on. A key element of a Caesar cipher is that the ciphertext alphabet is the same order as the plaintext alphabet - it is just shifted left or right by a certain number of characters. Some variations nowadays may shift by a quantity other than three, buy any cipher that keeps the order of the cipher alphabet intact, and merely changes the number of letters by which it is shifted left or right, can be called a Caesar cipher.

Plaintext ABCDEFGHIJKLMNOPQRSTUVWXYZ = Ciphertext DEFGHIJKLMNOPQRSTUVWXYZABC
For example: I like orange juice = L OLNH RUDQJH MXLFH

One version of a Caesar cipher, called ROT-13, was commonly used in internet newsgroups. It effectively performs a Caesar shift of +13, 'rotating' an alphabet by 13 characters:

The advantage of the number 13 is that it shifts exactly half of the 26-letter alphabet. This means that there is a one to one correspondence when encrypting or decrypting. An A encrypts to an N, and an N encrypts to an A.

careless25 · 2008-07-27 18:52:40

KEYWORDS

Another way to create a cipher alphabet is to scramble it in a methodical way. For example, if the keyword CRYPTO is chosen , then a cipher alphabet can be created by putting the word CRYPTO at the begginning, and follows it with the other letters of the alphabet that aren't in the keyword:

CRYPTOABDEFGHIJKLMNQSUVWXYZ

This results in a cipher alphabet that still has 26 letters, but is a bit more scrambled (and thereby harder to solve) than a simple Caesar Cipher.

This system can be used with any keyword, or even an entire keyphrase. If the key has any repeated letters, then only the first one is used, and he others are ignored:
Key: APPLE
CT=APLEBCDFGHIJKMNOQRSTUVWXYZ
or
Key: I Like Apples
CT=ILKEAPSBCDFGHJMNOQRTUVWXYZ

infinitebrain · 2008-08-01 14:44:10

Is 4,5,6,and7 unanswered questions?

careless25 · 2008-08-02 05:52:22

Yes!

careless25 · 2008-08-08 09:20:32

Anyone still tryin these?
Or should i post answers and stop?:|

Math Is Fun Forum

#26 2008-07-26 04:38:50

Re: Ciphers

#27 2008-07-26 04:43:30

Re: Ciphers

#28 2008-07-26 05:00:27

Re: Ciphers

#29 2008-07-26 05:11:46

Re: Ciphers

#30 2008-07-26 05:13:45

Re: Ciphers

#31 2008-07-26 05:20:57

Re: Ciphers

#32 2008-07-26 05:22:50

Re: Ciphers

#33 2008-07-26 16:43:49

Re: Ciphers

#34 2008-07-26 23:31:35

Re: Ciphers

#35 2008-07-27 03:06:41

Re: Ciphers

#36 2008-07-27 18:21:41

Re: Ciphers

#37 2008-07-27 18:32:40

Re: Ciphers

#38 2008-07-27 18:52:40

Re: Ciphers

#39 2008-08-01 14:44:10

Re: Ciphers

#40 2008-08-02 05:52:22

Re: Ciphers

#41 2008-08-08 09:20:32

Re: Ciphers

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