Struct PasswordChallengeMetadata 

pub struct PasswordChallengeMetadata {
    pub auth_salt: Vec<u8>,
    pub auth_memory_kib: u32,
    pub auth_iterations: u32,
    pub auth_parallelism: u32,
    pub challenge_id: Vec<u8>,
    pub nonce: Vec<u8>,
    pub auth_kdf_id: u32,
    pub format_version: u32,
}

Only returned for PASSWORD. Every handle without an active password setup (unknown, passkey-only, deleted, or disabled) gets indistinguishable public metadata: salt derived deterministically from a server secret and the canonical handle, with the same costs, KDF/version, and response shape. Challenge IDs/nonces remain fresh. The server binds the account internally, never via a handle-to-UUID value at begin. Creation is throttled; expiry <= 10 minutes.

Fields

auth_salt: Vec<u8>

Exactly 16 bytes.

auth_memory_kib: u32

Exactly 65536 in v1.

auth_iterations: u32

Exactly 3 in v1.

auth_parallelism: u32

Exactly 4 in v1.

challenge_id: Vec<u8>

Exactly 32 random bytes, one-use.

nonce: Vec<u8>

Exactly 32 random bytes, one-use.

auth_kdf_id: u32

Exactly 1 = Argon2id in v1.

format_version: u32

Exactly 1 in v1.

Trait Implementations

impl Clone for PasswordChallengeMetadata

fn clone(&self) -> PasswordChallengeMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PasswordChallengeMetadata

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

Formats the value using the given formatter.

impl Default for PasswordChallengeMetadata

fn default() -> PasswordChallengeMetadata

Returns the “default value” for a type.

impl Eq for PasswordChallengeMetadata

impl Hash for PasswordChallengeMetadata

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

where __H: Hasher,

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 Message for PasswordChallengeMetadata

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for PasswordChallengeMetadata

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PasswordChallengeMetadata