PLAINTEXT:

This is a test of a (likely very unsafe) implementation of the ChaCha20 symmetric-key cipher.  ABCDEFG1234567.  Hello, world!

CONVERTED TO HEX:

5468697320697320612074657374206f66206120286c696b656c79207665727920756e736166652920696d706c656d656e746174696f6e206f66207468652043686143686132302073796d6d65747269632d6b6579206369706865722e2041424344454647313233343536372e2048656c6c6f2c20776f726c64210a

--------------------------------------------------------------------------------
KEY: dcbc5d5a797fe62b32baf1dddea69ed2b7d63c931c258e19ac0677d6a17f7777
NONCE: 7528cc3706d64e03
--------------------------------------------------------------------------------

CIPHERTEXT:

72195d3fc7d72634bb7cd7112abfa042d82ebaf5c77dfccfb7ffa83ea792fbdcdbb2894d315db7348ac0a9eb241f40e578c79d8f2c1d1b9fb26bce18686c1636608c166928c3f681295ef293ab278c7b06934ef11f9eb5a770fa969e963ed50173b12c55cd7c51acc3042eed7993d39c6bc5c91feb9bc7422cfa79987c4a42f53362e6417dc9a19f3bde550797bd71ceac32d92d6a8091b16efded1f818872b0170377c989cb64320379fb5512e64e42154122b801f7b623f2d6724496606911965c3aebae250d99675e521417a517bf9afb0e85098004b304dbbec410952ff9794f5880eab7e1b6145371bf604baedfe04aec92f604e724e4ff0189dbe2146b