ChaCha Cipher
Key
Nonce
Counter
Rounds
Input
Output
ChaCha is a stream cipher designed by Daniel J. Bernstein. It is a variant of the Salsa stream cipher. Several parameterizations exist; 'ChaCha' may refer to the original construction, or to the variant as described in RFC-8439. ChaCha is often used with Poly1305, in the ChaCha20-Poly1305 AEAD construction.
Options
Key: ChaCha uses a key of 16 or 32 bytes (128 or 256 bits).
Nonce: ChaCha uses a nonce of 8 or 12 bytes (64 or 96 bits).
Counter: ChaCha uses a counter of 4 or 8 bytes (32 or 64 bits); together, the nonce and counter must add up to 16 bytes. The counter starts at zero at the start of the keystream, and is incremented at every 64 bytes.
References
https://wikipedia.org/wiki/Salsa20#ChaCha_variant
Related Tools
AAEncode
Encode any text to emoticons! AAEncode is a versatile and efficient online tool designed to encode and decode text using the AAEncode algorithm.
PPEncode
PPEncode can be used to write Perl code using only Perl reserved words. PPEncode Online Tool is a powerful solution designed for encoding text using the PPEncode algorithm.
UUEncode
Tool to Encode/Decode Text with UUEncode. The PPEncode Online Tool stands as a robust solution crafted to encode and decode text using the sophisticated PPEncode algorithm.