Crypto

Encryption

Useful websites

Address	Explanation
https://www.dcode.fr/	encryption and decryption
https://crackstation.net/	Decoding
https://gchq.github.io/CyberChef/	encryption and decryption and …
https://www.base64encode.org/	base64 encoding
https://www.base64decode.org/	base64 decoding
http://rumkin.com/tools/cipher/caesar.php	Decode caesar
https://www.unphp.net	deobfuscate php code

Decode Fernet

https://asecuritysite.com/encryption/ferdecode

Or

from cryptography.fernet import Fernet
key = ""
token = ""
cipher = Fernet(key)
decoded = cipher.decrypt(token)

Decode the Malbolge language

http://www.malbolge.doleczek.pl/
https://zb3.me/malbolge-tools/

Decode Dvorak format keyboards

https://www.geocachingtoolbox.com/index.php?lang=en&page=dvorakKeyboard

Decode DTFM

http://dl.djsoft.net/DTMFChecker.zip
https://www.dcode.fr/prime-numbers-cipher

Decrypt bcrypt

git clone https://github.com/BREAKTEAM/Debcrypt.git
python3 crack.py

Decode Cistercian numbers

https://www.dcode.fr/cistercian-numbers

Convert Multi-tap Phone Code to letters

https://www.dcode.fr/code-multitap-abc
http://rumkin.com/tools/cipher/atbash.php

Decode xor message

python3 crack_repeating_key_xor.py -f <file> -x

Attack on PKCS#1 in RSA

https://programtalk.com/vs2/python/9053/featherduster/tests/test_bleichenbacher.py/

Types of attacks on RSA

For example, decryption of flag.enc file by public key without private key

python3 ./RsaCtfTool/RsaCtfTool.py --publickey ./key.pub --private
openssl rsautl -decrypt -inkey key.pri -in flag.enc -out flag.txt

Decode Vigenere Decoder

https://www.dcode.fr/vigenere-cipher

Base64 decoding in terminal

echo "YToxOntzOjQ6Im5hbWUiO2E6MTp7czoxMDoicGF1bC1jb2xlcyI7YTo5OntzOjI6ImlkIjtzOjEwOiIxNTkyNDgzMjM2IjtzOjQ6Im5hbWUiO3M6 | base64 -d