Security Corner

May 26 2013   12:12PM GMT

Cipher challenge: Can you decrypt this?



Posted by: Ken Harthun
Tags:
Ciphers
Fun stuff
Security

encryptionTime for some crypto fun. If you have been following my posts, you know that I’m a crypto freak. I have loved codes and ciphers since grade school days (and that is quite a long time…). Surely, I was a secret agent or a cryptographer in another life; it’s simply fascinating to me. Anyway, the internet makes simple ciphers and cryptograms trivial to solve, but it still takes some ingenuity to figure out how the ciphertext was generated. So, here’s a challenge for you: Decrypt a simple sentence using any means at your disposal, including tools available on the internet.

It won’t be as easy as you might think. The sentence is very short, and does not contain the standard distribution of vowels and consonants, so you won’t figure it out that way. Moreover, the sentence contains every letter of the alphabet (hint, hint <wink>). And for those of you who think it’s going to be ROT-13, think again – it’s not. I have preserved the spaces to make your job slightly easier.  Here’s the sentence:

CQN ZDRLT KAXFW OXG SDVYB XENA CQN UJIH MXP.

Have fun and post your solution in the comments.

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  • tjeks1993
    The quick brown fox jumps over the lazy dog.
    0 pointsBadges:
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  • nucle8
    Break the following code and I will send you a check for $100. I believe it to be the most bulletproof encryption possible. Good luck!

    15CF
    789F
    4722
    5C6F
    D33E
    CC0E
    57B7
    493E
    9ECF
    B58F
    BC57
    4617
    5567
    D33E
    B73E
    9A22
    9D3E
    A062
    9ECF
    9ECF
    9ECF
    450E
    4A4F
    B58F
    4FC2
    450E
    9ECF
    9D3E
    A38E
    B8EF
    B73E
    A527
    B58F
    BC57
    B58F
    B237
    482F
    568E
    BE0E
    AB9F
    BE0E
    5567
    4EA7
    AD42
    B73E
    CFA2
    B08E
    9D3E
    A38E
    1AF8E
    10F2F
    51FE
    BE0E
    AB9F
    9A22
    B08E
    B73E
    4617
    5567
    B73E
    AEE7
    AD42
    450E
    568E
    BE0E
    A527
    4617
    4617
    AEE7
    C882
    BFC7
    BC57
    B58F
    4617
    568E
    B8EF
    BFC7
    DA8E
    41FF
    30F
    3F02
    CA47
    50DF
    4EA7
    AD42
    1AF8E
    10F2F
    2F67
    8262
    B08E
    A9FE
    4617
    31FE
    9897
    BE0E
    AEE7
    B237
    A6C2
    B73E
    B73E
    1AF8E
    10F2F
    41FF
    B237
    568E
    4EA7
    B3E2
    B08E
    A9FE
    6B57
    6782
    9BAF
    A062
    A527
    AB9F
    C33F
    BC57
    9D3E
    AD42
    BE0E
    BFC7
    CDD7
    D50F
    B8EF
    B58F
    64FE
    531F
    AD42
    BE0E
    5ED7
    18C2
    2C0F
    2C0F
    5A0F
    C4FE
    B237
    B73E
    4D8E
    51FE
    C882
    C6BF
    BE0E
    BFC7
    CC0E
    C4FE
    CDD7
    5C6F
    5567
    B73E
    AEE7
    AD42
    450E
    5C6F
    D33E
    CC0E
    57B7
    41FF
    41FF
    4407
    A1F7
    A527
    9D3E
    A6C2
    393E
    30F
    31FE
    B237
    C6BF
    5442
    50DF
    BFC7
    AEE7
    4617
    1A9F
    25BF
    24FE
    19FE
    450E
    AEE7
    BC57
    B73E
    A527
    AEE7
    CDD7
    5567
    3677
    4407
    18C2
    34A7
    41FF
    18C2
    4722
    B237
    C6BF
    5442
    5C6F
    D33E
    CC0E
    D16F
    5442
    4617
    A1F7
    A38E
    B237
    C6BF
    CFA2
    D16F
    663F
    18C2
    8E7
    30F
    1BE7
    2C0F
    4302
    9BAF
    AB9F
    B237
    A6C2
    BC57
    BC57
    4617
    568E
    BE0E
    AB9F
    BE0E
    5567
    4407
    AD42
    AEE7
    9ECF
    4617
    4A4F
    BE0E
    5567
    57B7
    CA47
    A9FE
    B08E
    B58F
    9A22
    A38E
    A38E
    9587
    A6C2
    AB9F
    1AF8E
    10F2F
    41FF
    B08E
    5567
    4A4F
    BFC7
    5ED7
    5DA2
    5567
    41FF
    A527
    AEE7
    B3E2
    C6BF
    BC57
    BFC7
    BE0E
    B237
    4EA7
    4A4F
    BE0E
    5567
    58E2
    B58F
    AEE7
    BC57
    A062
    9587
    A6C2
    AB9F
    1AF8E
    10F2F
    4FC2
    BFC7
    CA47
    568E
    4722
    A85F
    C6BF
    BFC7
    9ECF
    5442
    E97
    30F
    178E
    6DEF
    B73E
    D16F
    568E
    50DF
    B237
    4722
    4D8E
    C6BF
    B73E
    A6C2
    4C77
    568E
    CA47
    50DF
    5C6F
    D33E
    CC0E
    58E2
    942
    30F
    220E
    83CF
    A38E
    9D3E
    AEE7
    B3E2
    B58F
    1D4A2
    10F2F
    2F67
    8262
    B08E
    A9FE
    4722
    942
    30F
    10 pointsBadges:
    report

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