Struct KeyDerivationMethod 

pub struct KeyDerivationMethod { /* private fields */ }

Parsed XML key-derivation parameters, without private key material.

Parsing does not grant permission to derive a key. The enclosing operation must validate its compiled policy, reserve work and gate provider execution.

Implementations

impl KeyDerivationMethod

pub fn to_xml(&self, resources: &ResourcePolicy) -> Result<String, XmlEncError>

Serialize public KDF parameters without secret key material. The exact escaped output length is checked before allocating the output buffer. Field boundaries and significant ConcatKDF bits survive transport.

pub fn derive_key( &self, output_len: usize, provider: &dyn CryptoProvider, secret: &[u8], budget: &mut KeyEstablishmentBudget<'_>, ) -> Result<Zeroizing<Vec<u8>>, XmlEncError>

Execute parsed parameters under the enclosing operation’s shared allowance. Explicit XML KeyLength must match the consuming cipher.

pub fn concat_field_bits( &self, field: ConcatKdfField, ) -> Option<impl Iterator<Item = bool> + '_>

Borrow one original ConcatKDF field as significant bits, without copying its bytes. None distinguishes omission from an explicitly empty field.

XMLEnc 1.1 section 5.4.1 requires application-specific validation of the algorithm and party identities. Combining OtherInfo must not erase the boundaries needed for that check.

pub fn parameters( &self, output_len: usize, ) -> Result<KdfParameters<'_>, XmlEncError>

Bind the requested key width supplied by EncryptionMethod. An explicit XML KeyLength must agree; it is not an override of the consuming cipher.

Trait Implementations

impl Clone for KeyDerivationMethod

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeyDerivationMethod

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

Formats the value using the given formatter.

impl Eq for KeyDerivationMethod

impl PartialEq for KeyDerivationMethod

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for KeyDerivationMethod