Struct SecurityConstants 

pub struct SecurityConstants { /* private fields */ }

Security constants for lib-Q

This struct provides access to security-related constants used throughout the library for validation and configuration.

Implementations

impl SecurityConstants

pub fn new() -> Self

Create a new SecurityConstants instance

Returns

A new instance of SecurityConstants with default values.

impl SecurityConstants

pub fn max_aead_message_size(&self) -> usize

Maximum plaintext, ciphertext, or AAD size for one AEAD call.

pub fn max_hash_message_size(&self) -> usize

Maximum hash input length and signature message length.

pub fn standard_nonce_size(&self) -> usize

Get the standard nonce size

Returns

Returns the standard nonce size in bytes.

pub fn min_randomness_size(&self) -> usize

Get the minimum randomness size

Returns

Returns the minimum required randomness size in bytes.

pub fn get_expected_key_size( &self, algorithm: Algorithm, is_secret: bool, ) -> Result<usize>

Get the expected key size for a given algorithm

Arguments

• algorithm - The algorithm to get the key size for
• is_secret - Whether this is a secret key (affects expected size)

Returns

Returns the expected key size in bytes, or an error if the algorithm doesn’t use keys or is not supported.

pub fn get_expected_ciphertext_size( &self, algorithm: Algorithm, ) -> Result<usize>

Get the expected ciphertext size for a given algorithm

Arguments

• algorithm - The algorithm to get the ciphertext size for

Returns

Returns the expected ciphertext size in bytes, or an error if the algorithm doesn’t produce ciphertext or is not supported.

pub fn get_expected_signature_size(&self, algorithm: Algorithm) -> Result<usize>

Get the expected signature size for a given algorithm

Arguments

• algorithm - The algorithm to get the signature size for

Returns

Returns the expected signature size in bytes, or an error if the algorithm doesn’t produce signatures or is not supported.

pub fn set_max_aead_message_size(&mut self, max_size: usize)

Set the maximum AEAD plaintext, ciphertext, or AAD size (bytes) for one operation.

pub fn set_max_hash_message_size(&mut self, max_size: usize)

Set the maximum hash input and signature message size (bytes).

pub fn set_standard_nonce_size(&mut self, nonce_size: usize)

Set the standard nonce size

Arguments

• nonce_size - The standard nonce size in bytes

pub fn set_min_randomness_size(&mut self, min_size: usize)

Set the minimum randomness size

Arguments

• min_size - The minimum randomness size in bytes

Trait Implementations

impl Clone for SecurityConstants

fn clone(&self) -> SecurityConstants

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for SecurityConstants

Available on crate feature alloc only.

fn default() -> Self

Returns the “default value” for a type.