Crate holo_hash

Defines HoloHash and its various HashTypes

Re-exports

pub use hash_type::HashType;

Modules

encode_raw

By default, disable string encoding and just display raw bytes

error

HoloHash Error Type.

hash_type

Defines the prefixes for the various HashTypes, as well as the traits which unify them

Macros

assert_length

Helper for ensuring the the proper number of bytes is used in various situations

impl_hashable_content

A default HashableContent implementation, suitable for content which is already TryInto<SerializedBytes>, and uses a PrimitiveHashType

Structs

EntryHashes

A newtype for a collection of EntryHashes, needed for some wasm return types.

HoloHash

A HoloHash contains a vector of 36 bytes representing a 32-byte blake2b hash plus 4 bytes representing a DHT location. It also contains a zero-sized type which specifies what it is a hash of.

HoloHashed

Represents some piece of content along with its hash representation, so that hashes need not be calculated multiple times. Provides an easy constructor which consumes the content.

Enums

AnyDhtHashPrimitive

The primitive hash types represented by this composite hash

AnyLinkableHashPrimitive

The primitive hash types represented by this composite hash

HashableContentBytes

HashableContent can be expressed as “content”, or “prehashed”, which affects how a HoloHashed type will be constructed from it.

Constants

HOLO_HASH_CORE_LEN

Length of the core bytes (32)

HOLO_HASH_FULL_LEN

Length of the full HoloHash bytes (39 = 3 + 32 + 4)

HOLO_HASH_LOC_LEN

Length of the location bytes (4)

HOLO_HASH_PREFIX_LEN

Length of the prefix bytes (3)

HOLO_HASH_UNTYPED_LEN

Length of the core bytes + the loc bytes (36 = 32 + 4), i.e. everything except the type prefix

Traits

HasHash

Anything which has an owned HoloHashOf.

HashableContent

Any implementor of HashableContent may be used in a HoloHashed to pair data with its HoloHash representation. It also has an associated HashType.

PrimitiveHashType

A PrimitiveHashType is one with a multihash prefix. In contrast, a non-primitive hash type could be one of several primitive types, e.g. an AnyDhtHash can represent one of three primitive types.

Type Definitions

ActionHash

The hash of an action

AgentPubKey

An Agent public signing key. Not really a hash, more of an “identity hash”.

AnyDhtHash

The hash of anything referrable in the DHT. This is a composite of either an EntryHash or a ActionHash

AnyLinkableHash

The hash of anything linkable.

DhtOpHash

The hash of a DhtOp’s “unique form” representation

DnaHash

The hash of a DnaDef

EntryHash

The hash of an Entry.

ExternalHash

The hash of some external data that can’t or doesn’t exist on the DHT.

HoloHashOf

A convenience type, for specifying a hash by HashableContent rather than by its HashType

NetIdHash

The hash of a network ID

OpBasis

Alias for AnyLinkableHash. This hash forms the notion of the “basis hash” of an op.

WasmHash

The hash of some wasm bytecode

ZomeCallSigningKey

A public key of a pair of signing keys for signing zome calls.