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//! Implementation of Sequoia crypto API using pure Rust cryptographic
//! libraries.
use crate::types::*;
pub mod aead;
pub mod asymmetric;
pub mod ecdh;
pub mod hash;
pub mod symmetric;
/// Returns a short, human-readable description of the backend.
pub fn backend() -> String {
// XXX: can we include features and the version?
"RustCrypto".to_string()
}
/// Fills the given buffer with random data.
pub fn random(buf: &mut [u8]) {
use rand07::rngs::OsRng;
use rand07::RngCore;
OsRng.fill_bytes(buf)
}
impl PublicKeyAlgorithm {
pub(crate) fn is_supported_by_backend(&self) -> bool {
use PublicKeyAlgorithm::*;
#[allow(deprecated)]
match &self {
RSAEncryptSign | RSAEncrypt | RSASign | ECDH | EdDSA | ECDSA
=> true,
DSA
=> false,
ElGamalEncrypt | ElGamalEncryptSign | Private(_) | Unknown(_)
=> false,
}
}
}
impl Curve {
pub(crate) fn is_supported_by_backend(&self) -> bool {
use self::Curve::*;
match &self {
NistP256
=> true,
NistP384 | NistP521
=> false,
Ed25519 | Cv25519
=> true,
BrainpoolP256 | BrainpoolP512 | Unknown(_)
=> false,
}
}
}
impl AEADAlgorithm {
/// Returns the best AEAD mode supported by the backend.
///
/// This SHOULD return OCB, which is the mandatory-to-implement
/// algorithm and the most performing one, but fall back to any
/// supported algorithm.
pub(crate) const fn const_default() -> AEADAlgorithm {
AEADAlgorithm::EAX
}
pub(crate) fn is_supported_by_backend(&self) -> bool {
use self::AEADAlgorithm::*;
match &self {
EAX
=> true,
OCB | Private(_) | Unknown(_)
=> false,
}
}
}
|
