Struct Cid 

pub struct Cid {
    pub hash: [u8; 32],
    pub key: Option<[u8; 32]>,
}

Content identifier with hash and optional encryption key

For encrypted content: contains both hash (to locate) and key (to decrypt) For public content: contains only hash

Note: Size is not part of CID - it’s metadata stored in Link/DirEntry

Fields

hash: [u8; 32]

SHA256 hash of the (possibly encrypted) content

key: Option<[u8; 32]>

Encryption key (content hash of plaintext for CHK) None for unencrypted/public content

Implementations

impl Cid

pub fn public(hash: [u8; 32]) -> Cid

Create a new CID for public (unencrypted) content

pub fn encrypted(hash: [u8; 32], key: [u8; 32]) -> Cid

Create a new CID for encrypted content

pub fn is_encrypted(&self) -> bool

Check if this CID refers to encrypted content

pub fn parse(s: &str) -> Result<Cid, CidParseError>

Parse a CID from string format Accepts “hash” or “hash:key”

Trait Implementations

impl Clone for Cid

fn clone(&self) -> Cid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cid

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

Formats the value using the given formatter.

impl Display for Cid

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

Formats the value using the given formatter.

impl PartialEq for Cid

fn eq(&self, other: &Cid) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Cid