crypto

#solves	#writeups	link	#keywords
987	4	csaw-ctf-2015/crypto/ones_and_zer0s-50
824	4	csaw-ctf-2015/crypto/zer0-day-50
753	7	csaw-ctf-2015/crypto/whiter0se-50	substitution quipqiup yarp rumkin-solver
597	5	csaw-ctf-2015/crypto/notesy-100	substitution
500	4	hackover-ctf-2015/crypto/yodigga	diffie-hellman
436	3	mma-ctf-2015/crypto/smart-cipher-system-90	multiple shift lookup-table chaining xor custom
254	4	hack-dat-kiwi-ctf-2015/crypto/vigenere-1	vigenere chosen-plaintext
245	3	hack-dat-kiwi-ctf-2015/crypto/vigenere-2	known-plaintext
206	2	ekoparty-pre-ctf-2015/crypto/base-unknown	base32 base64-python
206	1	hack-dat-kiwi-ctf-2015/crypto/vigenere-3	kasiski frequency-analysis
202	5	ekoparty-ctf-2015/crypto/cry50	skytale dcode-solver cryptool
199	5	seccon-quals-ctf-2015/crypto/decrypt-it	base64
196	8	seccon-quals-ctf-2015/crypto/unzip-the-file	pkcrack encrypted-zip fcrackzip
181	3	ekoparty-pre-ctf-2015/crypto/classic-crypto	rot13 morse
178	4	nuit-du-hack-ctf-quals-2015/crypto/game-of-life	xor custom stream-cipher prng
160	9	ekoparty-ctf-2015/crypto/cry200	xor shift
144	2	volgactf-quals-2015/crypto/lcg	custom stream-cipher xor gamma linear-congruential-generator prng lcg egcd
136	7	plaidctf-2015/crypto/strength	egcd rsa identical-moduli attacksrsa.pdf
132	3	polictf-2015/crypto/exorcise	xor
119	2	pragyan-ctf-2015/crypto/roman	rot23 dcode-solver
111	3	hack-lu-ctf-2015/crypto/creative-cheating	rsa pcap factordb rsatool
102	5	asis-quals-ctf-2015/crypto/simple-algorithm	custom
100	1	volgactf-quals-2015/crypto/rsa	rsa wiener-attack
97	2	confidence-ctf-teaser-2015/crypto/power-level-50	c custom
94	4	9447-ctf-2015/crypto/randbox	multiple caesar cyclic-shift substitution chain-cipher vigenere permutation-cipher cbc
92	3	mma-ctf-2015/crypto/signer-and-verifier-100	custom-signing rsa
90	6	boston-key-party-2015/crypto/wood-island	elgamal linear-congruence wolfram-math
86	3	bctf-2015/crypto/warmup	rsa wiener-attack egcd openssl pablocelayes-solver
80	3	bctf-2015/crypto/weak-enc	rsa python binjitsu lzw chosen-plaintext side-channel otpbase xor
78	6	plaidctf-2015/crypto/curious	rsa wiener-attack pablocelayes-solver
72	2	polictf-2015/crypto/prophet-said	rot13 custom
66	4	ekoparty-pre-ctf-2015/crypto/rsa-2070	rsa factordb egcd modinv rsatool
58	1	0ctf-2015/crypto/oldcrypto	poly-alphabetic substitution cipher non-uniform shift
55	2	plaidctf-2015/crypto/lazy	merkle-hallman knapsack lll-reduction sage
54	4	9447-ctf-2015/crypto/dub-key	custom-signing
54	3	seccon-quals-ctf-2015/crypto/find-the-prime-numbers	paillier-cipher rsa
49	3	th3jackers-ctf-2015/crypto/cry100	custom encoding
48	1	haxdump-ctf-2015/crypto/forget-salting-and-ship-it-anyway
47	3	confidence-ctf-teaser-2015/crypto/mac-hacking-150	hmac hash-length-extension merkle-damgard hashpump php
47	3	boston-key-party-2015/crypto/orient-heights	elgamal
47	1	asis-finals-ctf-2015/crypto/bodu	rsa boneh-durfee
46	1	opentoall-ctf-2015/crypto/bach	musical-cryptogram
44	1	hackover-ctf-2015/crypto/nodistinguisher	xor base32
43	2	tum-ctf-teaser-2015/crypto/bad_apple	hmac merkle-damgard hash-length-extension hashpump
43	1	volgactf-quals-2015/crypto/gostfuscator	perl
43	1	pragyan-ctf-2015/crypto/the_impossible	shift
42	2	hack-lu-ctf-2015/crypto/checkcheckcheck	xor scryptos roputils random
41	1	pragyan-ctf-2015/crypto/one_more_headache	substitution
38	5	ekoparty-ctf-2015/crypto/cry300	encrypted-vbox rot13 sinfocol-cracker
34	2	volgactf-quals-2015/crypto/carry	lsfr custom
34	1	boston-key-party-2015/crypto/bowdoin	rsa recovery sage coppersmith lattice-reduction
33	5	boston-key-party-2015/crypto/airport	timing-oracle python square-multiply custom discrete-logarithm-conjecture egcd fermat modular-inverse lagrange-theorem
33	1	pragyan-ctf-2015/crypto/haunted_1s
33	1	hack-lu-ctf-2015/crypto/formular-generator	nist rng dualecdbrg
33	1	ekoparty-pre-ctf-2015/crypto/perfect-security	xor
31	3	backdoor-ctf-2015/crypto/rsalot	rsa rsatool factor
30	3	rctf-quals-2015/crypto/x-xor-md5	xor hashcat hash-cracking
30	2	ekoparty-ctf-2015/crypto/cry100	vigenere beaufort guballa-solver
29	4	rctf-quals-2015/crypto/decode-the-file	n0fate-pydes base64 hidden
29	2	polictf-2015/crypto/3doges2	tripledes go
28	2	pragyan-ctf-2015/crypto/weak_rsa	rsa fermat rsatool
28	1	volgactf-quals-2015/crypto/russian-doll	encrypted-iso efs-recovery
27	1	asis-finals-ctf-2015/crypto/simple	xor
26	3	csaw-ctf-2015/crypto/bricks-of-gold-500	custom cbc xor
25	3	backdoor-ctf-2015/crypto/rsanne	rsa mersenne-prime rsatool
24	1	hackover-ctf-2015/crypto/radorium	rsa scryptos
23	2	rctf-quals-2015/crypto/asm	dfs
22	1	asis-quals-ctf-2015/crypto/angler	custom
21	2	mma-ctf-2015/crypto/regrettable-ecc-200	aes cbc elliptic-curve weierstrass sage
21	2	asis-quals-ctf-2015/crypto/golden-metal	goldwasser-micali msieve gmpy blum
21	1	asis-finals-ctf-2015/crypto/honeywall	rsa?
20	2	hack-lu-ctf-2015/crypto/salt	nacl-box nonce xsalsa20 xor
20	2	9447-ctf-2015/crypto/wob-key	custom-signing
20	1	asis-quals-ctf-2015/crypto/cross-check	rsa fermat gmpy
18	2	9447-ctf-2015/crypto/wob-key-hard
18	1	whitehat-grand-prix-qualification-2015/cryptography/hoi-an
18	1	pragyan-ctf-2015/crypto/rubies_on_rails	railfence keypad
17	2	bsides-vancouver-ctf-2015/crypto/matasano	q1manytimepad cribtastic xortool
17	1	whitehat-contest-10/crypto/crypto100
16	5	9447-ctf-2015/crypto/fibbed	diffie-hellman montgomery-ladder sage aes pcap pisano pohlig-hellman
16	1	bctf-2015/crypto/redundant-code
15	2	0ctf-2015/crypto/satbeginner	3-sat boolean-satistiability-problem treengeling pycosat
15	1	tum-ctf-teaser-2015/crypto/pudel	aes cbc custom padding-oracle xor python-paddingoracle
15	1	plaidctf-2015/crypto/parlor2	rsa sage dsa
15	1	opentoall-ctf-2015/crypto/egregiously-catastrophic-bifurcation	ecb
14	1	hack-dat-kiwi-ctf-2015/crypto/vigenere-4	autokey-cipher
14	0	csaw-finals-ctf-2015/cryptography/check-plz
13	2	mma-ctf-2015/crypto/alice-game-250	oracle elgamal sage discrete-logarithm pohlig-hellman chinese-remainder
13	2	0ctf-2015/crypto/rsa-quine	rsa chinese-reminder nopadding msieve
13	1	tum-ctf-teaser-2015/crypto/turbo	aes cbc crime breach
13	1	opentoall-ctf-2015/crypto/enigma
13	1	csaw-ctf-2015/crypto/punchout-200	ebcdic punch-card feistel xor
13	1	backdoor-ctf-2015/crypto/bbad
12	1	whitehat-grand-prix-qualification-2015/cryptography/tam-dao
11	2	th3jackers-ctf-2015/crypto/cry300	xor hash-cracking john md5db
11	2	asis-finals-ctf-2015/crypto/giloph	tls rsa diffie-hellmann
11	2	asis-finals-ctf-2015/crypto/10-sed	des
11	0	whitehat-contest-10/crypto/crypto400
10	3	nuit-du-hack-ctf-quals-2015/crypto/weshgrow	hmac custom hash-cracking hash-length-extension
10	2	boston-key-party-2015/crypto/wonderland	elliptic-curve-discrete-logarithm twist-attack montgomery-ladder factor baby-step-giant-step sage
10	1	th3jackers-ctf-2015/crypto/cry200	substitution mygeocaching-solver vigenere
9	1	volgactf-quals-2015/crypto/cpkc	lll-reduction ntru sage
9	0	hack-lu-ctf-2015/crypto/campus-id-sso
8	1	whitehat-contest-10/crypto/crypto200	shamir-secret-sharing lagrange-polynomial
8	1	pragyan-ctf-2015/crypto/crack_this	playfair rumkin-solver
8	1	haxdump-ctf-2015/crypto/all-of-them
7	1	hackover-ctf-2015/crypto/racer	rc4
6	1	whitehat-grand-prix-qualification-2015/cryptography/buon-ma-thuot
6	1	haxdump-ctf-2015/crypto/more-of-them
6	1	csaw-finals-ctf-2015/cryptography/slabs-of-platinum	sage aes factordb solve500
6	0	asis-quals-ctf-2015/crypto/qrypt
5	0	seccon-quals-ctf-2015/crypto/please-give-me-md5-collision-files
4	3	bsides-vancouver-ctf-2015/crypto/ts-sci-nz	keypad
4	1	tum-ctf-teaser-2015/crypto/really_slow_arithmetic	rsa dan-boneh factor asn1decode
4	1	asis-finals-ctf-2015/crypto/RSASR	rsa emirp yafu
4	0	hackover-ctf-2015/crypto/fuckaduck
3	1	mma-ctf-2015/crypto/LCG-sign-400	linear-congruential dsa
3	1	backdoor-ctf-2015/crypto/rand
3	1	asis-quals-ctf-2015/crypto/falsecrypt	ntru
2	1	0ctf-2015/crypto/grebeginner
1	1	haxdump-ctf-2015/crypto/handwritten
1	1	bctf-2015/crypto/backdoor
1	0	volgactf-quals-2015/crypto/rusty-idea
1	0	tum-ctf-teaser-2015/crypto/linear
1	0	ekoparty-ctf-2015/crypto/cry400
1	0	confidence-ctf-teaser-2015/crypto/the-real-mac-hacking-400
1	0	asis-finals-ctf-2015/crypto/the-last-survivor
?	6	trend-micro-ctf-2015/crypto/crypto-100	rsa sage factor pyprimes factorlookup egcd metadecryptor rsatool
?	5	school-ctf-2015/crypto/affine-cipher-100	affine
?	5	nullcon-hackim-2015/crypto-1	custom
?	5	ghost-in-the-shellcode-2015/crypto/knockers	mac merkle-damgard hash-length-extension iagox-hash-extender-solver hashpump
?	5	codegate-ctf-2015/crypto/icbm	exploit cbc xor aes
?	4	trend-micro-ctf-2015/crypto/crypto-200	aes cbc xor known-plaintext
?	3	ghost-in-the-shellcode-2015/crypto/mtgo
?	3	easyctf-2015/cryptography/misaka-mikoto	railfence/gun rumkin-solver
?	3	easyctf-2015/cryptography/julius-save-me	caesar xarg-solver rumkin-solver
?	3	cyber-security-challenge-2015/cryptography/one-way	aes cbc rainbow xor ecb padding-oracle-attack poodle
?	2	trend-micro-ctf-2015/crypto/crypto-500	base64
?	2	school-ctf-winter-2015/crypto/lazy-cryptanalyst-100	substitution quipqiup
?	2	school-ctf-2015/crypto/super-digest-4-400	hash-cracking
?	2	icectf-2015/cryptography/rsa	rsa
?	2	icectf-2015/cryptography/rot13	rot13
?	2	icectf-2015/cryptography/numeric
?	2	icectf-2015/cryptography/farm-animals	pigpen-cipher
?	2	icectf-2015/cryptography/entropy	rsa euclid common-prime
?	2	icectf-2015/cryptography/cryptic-crypto	substitution quipqiup numpy
?	2	ghost-in-the-shellcode-2015/crypto/nikoli	hill-cipher sage
?	2	dctf-2015/crypto/no-crypto-200	aes cbc
?	2	dctf-2015/crypto/11-50	stream-cipher xor
?	1	trend-micro-ctf-2015/crypto/crypto-300	jxplorer snakeoil rsa cpython g0tmi1k-debian-ssh
?	1	securinets-ctf-2015/crypto/matrix-everywhere
?	1	school-ctf-winter-2015/crypto/master-of-guesswork-200
?	1	school-ctf-winter-2015/crypto/cyber-criminal-200	cardan-grill-cipher
?	1	school-ctf-winter-2015/crypto/ancient-message-300	custom
?	1	school-ctf-winter-2015/crypto/3-bits-rgb-500	xor
?	1	school-ctf-2015/crypto/super-digest-4-strong-500
?	1	school-ctf-2015/crypto/crypto-lego-500
?	1	school-ctf-2015/crypto/bypassing-the-snake-400
?	1	sCTF-2015/crypto/qes	oeis fibonacci pentagonal
?	1	sCTF-2015/crypto/coney	rabbit-cipher
?	1	sCTF-2015/crypto/aGFtcHduZXIz	recon
?	1	sCTF-2015/crypto/MD5_2	hash-cracking hashkiller
?	1	sCTF-2015/crypto/MD5	hash-cracking hashkiller
?	1	sCTF-2015/crypto/I%20Like%20Bacon	morse-code bacon-cipher
?	1	sCTF-2015/crypto/Crib%20Drag	xor
?	1	sCTF-2015/crypto/Cipherception	multiple encoding base64 atbash caesar-shift affine
?	1	nullcon-hackim-2015/crypto-2	run-length-encoding
?	1	icectf-2015/cryptography/rsa3	rsa bruteforce
?	1	icectf-2015/cryptography/numb3rs
?	1	icectf-2015/cryptography/diary	xor
?	1	icectf-2015/cryptography/agents	rsa chinese-remainder
?	1	icectf-2015/cryptography/2x0r	xor xortool
?	1	ibteam-blackvalentine-ctf-2015/crypto/crypto-4
?	1	ibteam-blackvalentine-ctf-2015/crypto/crypto-2	multi-tap abc dcode-solver
?	1	ibteam-blackvalentine-ctf-2015/crypto/crypto-1	multiple substitution navajo
?	1	hitcon-ctf-quals-2015/crypto/simple	aes cfb xor
?	1	hitcon-ctf-quals-2015/crypto/rsabin	rsa cado-nfs modular-sqrt
?	1	hitcon-ctf-quals-2015/crypto/poooooooow
?	1	hitcon-ctf-quals-2015/crypto/guess
?	1	hackcon-2015/crypto/StealTheDiamond	xor
?	1	hackcon-2015/crypto/IdLoveToTurnYouOn	enigma enigmaco-simulator
?	1	ghost-in-the-shellcode-2015/crypto/vig128	block-cipher vigenere
?	1	easyctf-2015/cryptography/yves-fave-pic	hidden
?	1	easyctf-2015/cryptography/xor	xor
?	1	easyctf-2015/cryptography/respiratory-sinus-arrythmia	rsa wiener-attack pablocelayes-solver
?	1	easyctf-2015/cryptography/matrices	hill-cipher known-plaintext sage xor
?	1	easyctf-2015/cryptography/i-love-sleeping	polybius
?	1	easyctf-2015/cryptography/hardwood-floors
?	1	easyctf-2015/cryptography/h4sh3d	hash-cracking custom
?	1	easyctf-2015/cryptography/cave-johnson	vigenere mygeocaching-solver rumkin-solver
?	1	easyctf-2015/cryptography/black-table
?	1	easyctf-2015/cryptography/bigger-is-better	rsa
?	1	easyctf-2015/cryptography/all-zobs-fault	rsa
?	1	dctf-2015/crypto/custom-function-engineering-300	custom php constraint
?	1	cyber-security-challenge-2015/cryptography/guess-the-algorithm	john linkedin-hash hash-cracking
?	1	cyber-security-challenge-2015/cryptography/crack-the-hash	hash-cracking
?	1	break-in-ctf-2015/crypto/substitution	substitution
?	1	ob/master/known_plaintext_3_300.md	substitution known-plaintext
?	0	securinets-ctf-2015/crypto/decrypt-me
?	0	securinets-ctf-2015/crypto/card-games
?	0	nullcon-hackim-2015/crypto-5
?	0	nullcon-hackim-2015/crypto-4
?	0	nullcon-hackim-2015/crypto-3
?	0	inc0gnito-ctf-2015/crypto/WhoAreYou
?	0	inc0gnito-ctf-2015/crypto/RSA
?	0	inc0gnito-ctf-2015/crypto/Gaebale-in-panic
?	0	icectf-2015/cryptography/sausages
?	0	icectf-2015/cryptography/alternate-rsa
?	0	ibteam-blackvalentine-ctf-2015/crypto/crypto-3
?	0	hitcon-ctf-quals-2015/crypto/random
?	0	easyctf-2015/cryptography/zobs-password
?	0	easyctf-2015/cryptography/known-plaintext-2
?	0	easyctf-2015/cryptography/known-plaintext-1
?	0	dctf-2015/crypto/things-you-were-not-able-to-see-in-the-past-100
?	0	break-in-ctf-2015/crypto/numbero
0	1	polictf-2015/crypto/even-the-server	rsa
0	0	whitehat-grand-prix-qualification-2015/cryptography/da-nang