# Key Identifiers

Key identifiers "kid" use the bech32 format.

The bech32 format has a prefix, separator and data part.

The prefix describes the type of key and the data part is the public key bytes encoded as alphanumeric characters excluding "1", "b", "i", and "o".

Key Prefix Example
EdX25519 kex kex1ts0qw8fwkvle2f2xsqumetmr9ev5ppx22rl5hnycen68sanjzl7qnta629
X25519 kbx kbx15z2g8pprdf4a20ea3as03fv54u0eseewlmv0ktu0ezwzakm2x3ss28selu