Struct CidBuilder 

pub struct CidBuilder { /* private fields */ }

CID builder for creating content identifiers

Implementations

impl CidBuilder

pub fn new() -> Self

Creates a new CidBuilder with default settings.

Uses CIDv1, raw codec (0x55), and SHA2-256 hash algorithm by default.

pub fn v0() -> Self

Create a builder configured for CIDv0 (legacy IPFS format)

CIDv0 uses:

• SHA2-256 hash algorithm
• DAG-PB codec (0x70)
• Base58btc encoding (implicit, starts with “Qm”)

pub fn version(self, version: Version) -> Self

Sets the CID version (V0 or V1).

Note: CIDv0 has restrictions (must use SHA2-256 and DAG-PB codec).

pub fn codec(self, codec: u64) -> Self

Sets the codec for the CID.

Common codecs:

• 0x55 - raw binary
• 0x70 - DAG-PB (IPFS DAG protobuf)
• 0x71 - DAG-CBOR
• 0x0129 - DAG-JSON

pub fn hash_algorithm(self, algorithm: HashAlgorithm) -> Self

Sets the hash algorithm to use for CID generation.

Supported algorithms: SHA2-256, SHA3-256, BLAKE3.

pub fn build(&self, data: &[u8]) -> Result<Cid>

Build a CID from data using the configured hash algorithm

pub fn build_dag_cbor(&self, data: &[u8]) -> Result<Cid>

Build a CID using DAG-CBOR codec

pub fn build_raw(&self, data: &[u8]) -> Result<Cid>

Build a CID using raw codec (default)

pub fn build_v0(&self, data: &[u8]) -> Result<Cid>

Build a CIDv0 (legacy format) from data

This is a convenience method that creates a CIDv0 regardless of the builder’s current configuration.

Trait Implementations

impl Clone for CidBuilder

fn clone(&self) -> CidBuilder

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CidBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for CidBuilder

fn default() -> Self

Returns the “default value” for a type.