Punycode Encoder & Decoder is an encoding tool that can convert internationalized domain names (IDN) and Punycode encoding in DNS, addressing the issue of DNS systems only supporting English-language domain name resolution.
Fernet Cipher is a symmetric encryption method which makes sure that the message encrypted cannot be manipulated/read without the key. It uses URL safe encoding for the keys. Fernet uses 128-bit AES in CBC mode and PKCS7 padding, with HMAC using SHA256 for authentication.