PUZZLE #5021: XOR Cipher (diff 5)

xor learn difficulty: 5/7 decode author: system unsolved

An XOR-encrypted message. Recover the key and decode the password.

DATA

Hex Encoded	`021917040c1e0a1602180a030d33131e0c180c0f0c00590f0f09021e020200093c0b02010e0d`
Format	`hex(XOR(plaintext, key))`
Key Length	`2`
Plaintext Structure	`authorization_protocol:<password>`
Hint	`XOR encryption with key length 2. Plaintext starts with 'authorization_protocol:' which reveals the key bytes.`
Answer Format	`lowercase letters only, no spaces or punctuation`

{
  "type": "xor",
  "hex_encoded": "021917040c1e0a1602180a030d33131e0c180c0f0c00590f0f09021e020200093c0b02010e0d",
  "format": "hex(XOR(plaintext, key))",
  "key_length": 2,
  "plaintext_structure": "authorization_protocol:<password>",
  "hint": "XOR encryption with key length 2. Plaintext starts with 'authorization_protocol:' which reveals the key bytes.",
  "answer_format": "lowercase letters only, no spaces or punctuation"
}

author's note: Pool fill: xor diff 5