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TlsKeyHash

xmtp_mls::mls_common::tls_set

Struct TlsKeyHash 

pub struct TlsKeyHash(/* private fields */);
Expand description

A SHA-256 hash of a key’s TLS-serialized form, used as the lookup token for TlsSetMutation::RemoveByHash.

This is a newtype around [u8; 32] to prevent accidental mixing with other 32-byte SHA-256 hashes elsewhere in the codebase (commit hashes, installation IDs, etc.).

The only safe way to construct one is via TlsKeyHash::of, which guarantees the hash always uses the canonical TLS serialization of the key. Raw byte construction is reserved for wire-format deserialization.

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impl TlsKeyHash

pub fn of<K>(key: &K) -> Result<TlsKeyHash, Error>
where K: Serialize + Size,

Compute the hash of a key by SHA-256-ing its TLS-serialized form. This is the only public way to hash a key, ensuring every hash on the wire was produced by the canonical encoding; from_bytes only rebuilds a hash read back.

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

Construct from raw bytes. Used by wire-format deserialization to reconstruct a hash that was produced by an earlier TlsKeyHash::of on the sender; the bytes are taken as they are, not hashed.

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

Borrow the underlying bytes.

Trait Implementations§

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impl Clone for TlsKeyHash

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fn clone(&self) -> TlsKeyHash

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for TlsKeyHash

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

Formats the value using the given formatter. Read more
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impl Hash for TlsKeyHash

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for TlsKeyHash

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

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

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impl Eq for TlsKeyHash

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impl StructuralPartialEq for TlsKeyHash

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