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Tag: Number Theory

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Number Theory

Related:
#RSA
#Factorization
#Mathematics

No description is available for this tag.

Updated Apr 24, 2026
Number Theory Challenges
super-tomato
kanon

kanon

Crypto
406 solves
one-p-rsa
kanon

kanon

Crypto
247 solves
Square RSA
hiikunz

hiikunz

Crypto
245 solves
RSA2026
theoremoon

theoremoon

Crypto
219 solves
RRe_Time_Limiter
kanon

kanon

Crypto
187 solves
crypto_666
kurenaif

kurenaif

Crypto
108 solves
trippple
minaminao

minaminao

Crypto
105 solves
frozen cake
theoremoon

theoremoon

Crypto
71 solves
42
minaminao

minaminao

Crypto
60 solves
42*
minaminao

minaminao

Crypto
18 solves

trippple

SECCON CTF 13 決勝観戦CTF
105 solves
Crypto

by

minaminao

minaminao

出力からフラグを復元してください🐍

import os
from Crypto.Util.number import getPrime, bytes_to_long

m = bytes_to_long(os.getenv("FLAG").encode())
p = getPrime(96)
n = p * p * p
e = 65537
c = pow(m, e, n)

print(f"{n,c=}")

出力:

n,c=(272361880253535445317143279209232620259509770172080133049487958853930525983846305005657, 69147423377323669983172806367084358432369489877851180970277804462365354019444586165184)
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