Struct ContentHash 

pub struct ContentHash(/* private fields */);

A BLAKE3 content hash (32 bytes).

Used for:

• Audit chain linking (each entry hashes the previous)
• Content deduplication and verification
• Binary hash verification before execution

Implementations

impl ContentHash

pub fn hash(data: &[u8]) -> Self

Hash arbitrary data.

pub const fn zero() -> Self

Create a zero hash (used for genesis entries).

pub fn is_zero(&self) -> bool

Check if this is the zero hash.

pub const fn as_bytes(&self) -> &[u8; 32]

Get the raw bytes.

pub const fn from_bytes(bytes: [u8; 32]) -> Self

Create from raw bytes.

pub fn try_from_slice(slice: &[u8]) -> Option<Self>

Try to create from a slice.

Returns None if the slice is not exactly 32 bytes.

pub fn to_hex(&self) -> String

Encode as hex string.

pub fn from_hex(s: &str) -> Result<Self, FromHexError>

Decode from hex string.

Errors

Returns an error if the string is not valid hex or not 32 bytes.

pub fn to_base64(&self) -> String

Encode as base64 string.

pub fn from_base64(s: &str) -> Result<Self, DecodeError>

Decode from base64 string.

Errors

Returns an error if the string is not valid base64 or not 32 bytes.

Trait Implementations

impl AsRef<[u8]> for ContentHash

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for ContentHash

fn clone(&self) -> ContentHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentHash

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

Formats the value using the given formatter.

impl Default for ContentHash

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ContentHash

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ContentHash

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

Formats the value using the given formatter.

impl From<[u8; 32]> for ContentHash

fn from(bytes: [u8; 32]) -> Self

Converts to this type from the input type.

impl From<ContentHash> for [u8; 32]

fn from(hash: ContentHash) -> Self

Converts to this type from the input type.

impl Hash for ContentHash

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ContentHash

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ContentHash

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ContentHash

impl Eq for ContentHash

impl StructuralPartialEq for ContentHash