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did:key.md

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did:key

The Key DID method encoding leverages the existing multicodes used by the Key DID method.

Method multicodec

Code Method identifier length (bytes)
0xe7 33
0xea ?? (not part of the Key DID spec)
0xeb 96
0xec 32
0xed 32
0x1200 33
0x1201 49
0x1202 67
0x1205 270 or 526 (see RSA Public Key representation for how to distinguish these two cases)

Format

<multidid-code><method-code><method-bytes><url-length><url-bytes>

Where:

  • multidid-code - a varint encoding of 0xd1d
  • method-code - a varint encoding of one of the codes in the table above
  • method-bytes - MUST contain exactly the number of bytes specified byte the method code
  • url-length - a varint describing the length of the url-bytes parameter
  • url-bytes - a UTF-8 encoded string representing the DID URL parameters

Examples

Displayed using base 16.

// did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp
0x9d1aed013b6a27bcceb6a42d62a3a8d02a6f0d73653215771de243a63ac048a18b59da2900

// did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp
0x9d1aed013b6a27bcceb6a42d62a3a8d02a6f0d73653215771de243a63ac048a18b59da2931237a364d6b6954427a31796d75657041513448454859534631483871754735474c5656515233646a6458336d446f6f5770

// did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme
0x9d1ae70103874c15c7fda20e539c6e5ba573c139884c351188799f5458b4b41f7924f235cd00