class Object {

RSA.md

Email

Encrypted Question

begin 777 portal.bin
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M>2HJ+@T*#0I@8&`-"D-/3D-!5"A$14-265!4*#$Y-S,W,BDN=&]3=')I;F<H
M*2P@1$5#4EE05"@S,S,P-SDI+G1O4W1R:6YG*"DI#0I@8&`-"@T*(R!#05!4
M0TA!#0I5<V4@=&AI<R!G:7-T(')E=FES:6]N(&`W9#(S939E.3DY-&)B-F9A
M93@W-&1A8C,U930V9F0W-6(Y9&0Q-6)E8"!R97-U;'0@87,@0T%05$-(02X-
!"@``
`
end

Decrypt

$ cat << 'EOF' > question.uu
begin 777 portal.bin
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M>2HJ+@T*#0I@8&`-"D-/3D-!5"A$14-265!4*#$Y-S,W,BDN=&]3=')I;F<H
M*2P@1$5#4EE05"@S,S,P-SDI+G1O4W1R:6YG*"DI#0I@8&`-"@T*(R!#05!4
M0TA!#0I5<V4@=&AI<R!G:7-T(')E=FES:6]N(&`W9#(S939E.3DY-&)B-F9A
M93@W-&1A8C,U930V9F0W-6(Y9&0Q-6)E8"!R97-U;'0@87,@0T%05$-(02X-
!"@``
`
end
EOF
$ uudecode -o output question.uu
$ file -b output
ASCII text, with CRLF line terminators
$

Decrypted Question

# Welcome

## Key

RSA Public Key: (N, 7)
N = 233 * M
M is the greatest four-digit prime that makes N end with 233

## Encrypted Audit QQ group number

The Audit QQ group number is encrypted with the **RSA Public Key**.

'''
CONCAT(DECRYPT(197372).toString(), DECRYPT(333079).toString())
'''

# CAPTCHA
Use this gist revision `7d23e6e9994bb6fae874dab35e46fd75b9dd15be` result as CAPTCHA.

QQ Group

Group Num: 378390696

7d23e6e9994bb6fae874dab35e46fd75b9dd15be