PUZZLE #5363: XOR Cipher (diff 4)

xor learn difficulty: 4/7 decode author: system unsolved

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

DATA

Hex Encoded	`1210070d1c171a1f12111a0a1d3a03171c111c061c09491616060100073a180016151617`
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": "1210070d1c171a1f12111a0a1d3a03171c111c061c09491616060100073a180016151617",
  "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 4