CTF challenges & writeups

199 challenges in family ⊕ crypto:other ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
DesintegratedRSA #rsa #bit-flip-recovery #prime-reconstruction	DaVinciCTF 2023	29.26	Crypto	files wu 2
rolling-in-the-mud #pigpen-cipher	LA 2023	–	Crypto	files wu 2
Just_One_More #linear-system	NahamCon 2023	34.82	Crypto	files wu 2
RSA_Intro #textbook-rsa	NahamCon 2023	34.82	Crypto	files wu 1
the-other-css #z3 #lfsr #css-cipher	PlaidCTF 2023	100.00	Crypto	files wu 1
Diffecientwo #hash-collision #z3 #murmurhash3	SekaiCTF 2023	24.86	Crypto	files wu 1
RandSubWare #differential-cryptanalysis #spn	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_1 #graph-encryption #token-decryption	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_2 #graph-encryption #leakage-abuse #shortest-path-tree	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_3 #graph-encryption #query-recovery #leakage-abuse	SekaiCTF 2023	24.86	Crypto	files wu 1
RSA #rsa #symmetric-polynomial #vieta	Srdnlen 2023	24.17	Crypto	files wu 1
BeepBoop_Cryptography #binary-encoding #decoding	SunshineCTF 2023	34.09	Crypto	files wu 1
RANDOM_SEED_RANDOM #prng #cycle-length-attack	TSG 2023	–	Crypto	files wu 2
Unique_Flag #rsa #character-oracle #tree-search	TSG 2023	–	Crypto	files wu 3
casino #business-logic-flaw #negative-value	TetCTF 2023	53.89	Crypto	files wu 1
Morphing_Time #elgamal #malleability	UIUCTF 2023	–	Crypto	files src wu 2
Three-Time_Pad #many-time-pad #key-reuse	UIUCTF 2023	–	Crypto	files src wu 2
TheSecretImage #visual-cryptography #image-subtraction	VishwaCTF 2023	22.69	Crypto	files wu 1
keyexchange #diffie-hellman #chosen-exponent	WolvCTF 2023	24.33	Crypto	files wu 2
superbox #feistel-cipher #algebraic-cryptanalysis	corCTF 2023	36.97	Crypto	files wu 1
Aes-1 #hardcoded-password	n00bzCTF 2023	15.12	Crypto	files wu 1
small_weiner #rsa #boneh-durfee #lattice #small-private-exponent	DaVinciCTF 2022	24.50	Crypto	files wu 2
baby-rsa #rsa #higher-power-residue #nth-root #crt	DiceCTF 2022	24.82	Crypto	files wu 1
correlated #lfsr #correlation-attack #filtered-lfsr	DiceCTF 2022	24.82	Crypto	files wu 1
learning-without-errors #rlwe #ckks #lattice #key-recovery	DiceCTF 2022	24.82	Crypto	files wu 1
pow-pow #vdf #rsa-group #repeated-squaring	DiceCTF 2022	24.82	Crypto	files wu 2
psych #timing-attack #fujisaki-okamoto #kem	DiceCTF 2022	24.82	Crypto	files wu 1
rejected #lfsr #rejection-sampling #known-plaintext #gf2-linear-system	DiceCTF 2022	24.82	Crypto	files wu 1
baby-arx #byte-at-a-time	DownUnderCTF 2022	–	Crypto	files src wu 3
SecureEncodingBase64 #simulated-annealing	ImaginaryCTF 2022	24.65	Crypto	files wu 1
smoll #shared-prime-factor	ImaginaryCTF 2022	24.65	Crypto	files wu 1
Barry #bigram-substitution #cryptogram	PatriotCTF 2022	24.52	Crypto	files src wu 1
Cowsay #repeating-key-xor #xortool	PatriotCTF 2022	24.52	Crypto	files src wu 1
Fly #swipe-typing #keyboard-trace	PatriotCTF 2022	24.52	Crypto	files wu 1
choreography #slide-attack #feistel	PlaidCTF 2022	93.67	Crypto	files wu 1
S2DH #sidh #castryck-decru #torsion-point	RCTF 2022	–	Crypto	files wu 1
RSAGoneWrong #rsa #phi-factorization #prime-combination	RITSEC 2022	–	Crypto	files wu 1
close_enough #rsa #fermat-factorization #close-primes	SEETF 2022	–	Crypto	files wu 3
lost_modulus #rsa #modulus-recovery	SEETF 2022	–	Crypto	files wu 2
escrime #rsa #common-factor #gcd	Securinets 2022 Quals	50.11	Crypto	files wu 1

Challenges