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Cryptography challenge

 
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Jinu
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PostPosted: Fri Nov 21, 2014 8:21 am    Post subject: Cryptography challenge Reply with quote
YmqPDuqcGa8Lc5r+L8cSaZhZ9tVx86DJXDbeaYs4VUAUmqw0YVpJQwek4BzqELAy/p0tU04dOdDLcMARCI6yeXh9LGxA5+CbXvyd0qPYrqgmXbZTE7hmsAd4dyZTuB+tq6stgD4w+vtAanWbO​​STaRgUfJ/VKVQ+NOIIX8Ke8pnqBcuwUmsxWrMNp27QAvzBqSCYNGakbiIl3bfBbechdBtWam5V22+tBSaj93Hpklg​​Iue6FQ1qhBWkX8YKigku7J0GGu/UnWP2lxty1mSJILctjwVHdn2oovFPPCoEW+LEY=

256bit AES. ASCII. 64

Pass:CONVERT

Last edited by Jinu on Sat Nov 22, 2014 9:08 am; edited 1 time in total
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zm0d
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PostPosted: Fri Nov 21, 2014 8:34 am    Post subject: Reply with quote
result is "Congratulations"

Your string is double encrypted with AES 256 Bit. So decrypt
Code:
YmqPDuqcGa8Lc5r+L8cSaZhZ9tVx86DJXDbeaYs4VUAUmqw0YVpJQwek4BzqELAy/p0tU04dOdDLcMARCI6yeXh9LGxA5+CbXvyd0qPYrqgmXbZTE7hmsAd4dyZTuB+tq6stgD4w+vtAanWbO​​STaRgUfJ/VKVQ+NOIIX8Ke8pnqBcuwUmsxWrMNp27QAvzBqSCYNGakbiIl3bfBbechdBtWam5V22+tBSaj93Hpklg​​Iue6FQ1qhBWkX8YKigku7J0GGu/UnWP2lxty1mSJILctjwVHdn2oovFPPCoEW+LEY=
with AES 256 Bit and you will receive
Code:
Ox1kT4YXpi4b6+1pH3l0iJnWZ8B+A85dJrWEprC3NcLZw4CoHMD/rAnnfNWPit5OUM0O3ImHSSspEAwERCKnPRzD7J54fXFUrPtnOL2qP1J+S0IQ4QDbjg8Ej27qggQEbql2Ov8/d8+tE8/SF+a5HsO3lPxTkd/5m5vyer1G2kqcFkZGnVNrmcGwoyG7vYVXxYa/mX91FkTAlSxnaD41GQ==
this you decrypt again with the same key and AES 256 Bit. The result is a base64 encoded string
Code:
MDEwMDAwMTEwMTEwMTExMTAxMTAxMTEwMDExMDAxMTEwMTExMDAxMDAxMTAwMDAxMDExMTAxMDAwMTExMDEwMTAxMTAxMTAwMDExMDAwMDEwMTExMDEwMDAxMTAxMDAxMDExMDExMTEwMTEwMTExMDAxMTEwMDEx
. This string is a decoded binary string
Code:
010000110110111101101110011001110111001001100001011101000111010101101100011000010111010001101001011011110110111001110011
which leads to the result text "Congratulations" when using a binary to ascii translator.
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Jinu
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PostPosted: Fri Nov 21, 2014 9:27 am    Post subject: Reply with quote
You're simply awesome. Will come up with more.

Last edited by Jinu on Sat Nov 22, 2014 9:09 am; edited 1 time in total
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zm0d
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PostPosted: Fri Nov 21, 2014 10:17 am    Post subject: Reply with quote
You're welcome =]
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