PeerId class

A libp2p PeerId represented as the raw multihash bytes of a public key.

In the libp2p network stack, a PeerId uniquely identifies a peer. It is conceptually the multihash of the peer's public key. This class stores the raw byte representation and provides encoding/decoding to common string formats used in libp2p: Base58 (default) and Base36.

PeerId values are immutable and can be compared for equality. The hashCode implementation uses an FNV-1a 32-bit hash suitable for collections such as Map and Set.

Example

final peerId = PeerId.fromBytes([0x12, 0x20, 0xab, 0xcd]);
final b58 = peerId.toBase58();
final recovered = PeerId.fromBase58(b58);
assert(peerId == recovered);

See also:

• Libp2pQuicTransport — dials and listens using peer addressing.
• libp2p PeerId spec — https://github.com/libp2p/specs/blob/master/peer-ids/peer-ids.md

Constructors

PeerId.fromBase58(String base58)

Creates a PeerId from a Base58-encoded string.

factory

PeerId.fromBytes(List<int> bytes)

Creates a PeerId from a raw byte list.

factory

Properties

bytes → List<int>

The raw multihash bytes (identity hash of the public key).

final

hashCode → int

A 32-bit hash code derived from the raw bytes using an FNV-1a algorithm.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

encodeBase36({bool multibase = false}) → String

Encodes this PeerId's raw bytes using standard Base36 (lowercase).

encodeBase58({bool multibase = false}) → String

Encodes this PeerId's raw bytes using standard Base58 (Bitcoin alphabet).

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toBase36() → String

Returns the Base36 encoding of this peer ID.

toBase58() → String

Returns the Base58 encoding of this peer ID.

toString() → String

Returns a lowercase hex string representation of the raw bytes.

override

Operators

operator ==(Object other) → bool

Whether two PeerIds represent the same raw byte sequence.

override

Static Methods

decodeBase36(String input) → PeerId

Decodes a Base36-encoded string into a PeerId.

decodeBase58(String input) → PeerId

Decodes a Base58-encoded string into a PeerId.

fromPublicKey(List<int> publicKeyBytes) → Future<PeerId>

Derives a PeerId from raw public key bytes using SHA-256 multihash.