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Quelle crypto.rs
Sprache: unbekannt
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Spracherkennung für: .rs vermutete Sprache: Unknown {[0] [0] [0]} [Methode: Schwerpunktbildung, einfache Gewichte, sechs Dimensionen]
//! High-level crypto bindings.
use std::sync::Mutex;
use duplicate::duplicate_item;
use crate::{
common::Nonce,
crypto::{
argon2, blake2b, chacha20,
chunked::{self, InvalidTag},
deprecated::scrypt,
salsa20, sha2, x25519,
},
utils::sync::MutexIgnorePoison as _,
};
/// A general crypto-related error.
#[derive(Debug, thiserror::Error, uniffi::Error)]
#[uniffi(flat_error)]
pub enum CryptoError {
/// Invalid parameter provided by foreign code.
#[cfg(feature = "uniffi")]
#[error("Invalid parameter: {0}")]
InvalidParameter(String),
/// Unable to encrypt/decrypt.
#[error("Unable to encrypt/decrypt")]
CipherFailed,
}
impl From<InvalidTag> for CryptoError {
fn from(_: InvalidTag) -> Self {
CryptoError::CipherFailed
}
}
/// Compute the SHA-256 hash of the provided data.
#[must_use]
#[uniffi::export]
pub fn sha256(data: &[u8]) -> Vec<u8> {
use crate::crypto::digest::{Digest as _, FixedOutput as _};
sha2::Sha256::new().chain_update(data).finalize_fixed().to_vec()
}
/// Compute the HMAC-SHA256 from the provided key and data.
#[expect(clippy::missing_panics_doc, reason = "Panic will never happen")]
#[must_use]
#[uniffi::export]
pub fn hmac_sha256(key: &[u8], data: &[u8]) -> Vec<u8> {
use crate::crypto::digest::{FixedOutput as _, Mac as _};
sha2::HmacSha256::new_from_slice(key)
.expect("HMAC can take key of any size")
.chain_update(data)
.finalize_fixed()
.to_vec()
}
/// Derive a Blake2b MAC of length 256 bits (32 bytes) of the data from the provided key, personal and salt.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is present and less than 1 or more than 128
/// bytes and when `personal` or `salt` is more than 32 bytes.
#[expect(clippy::ref_option, reason = "Bindings don't allow to use Option<&Vec<u8>>")]
#[uniffi::export]
pub fn blake2b_mac_256(
key: &Option<Vec<u8>>,
personal: &[u8],
salt: &[u8],
data: &[u8],
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::digest::{FixedOutput as _, Mac as _};
Ok(
blake2b::Blake2bMac256::new_with_salt_and_personal(key.as_deref(), salt, personal)
.map_err(|_| {
CryptoError::InvalidParameter(
"'key' if provided must be between 1 and 128 bytes, 'personal' and 'salt' must be up to \
32 bytes"
.to_owned(),
)
})?
.chain_update(data)
.finalize_fixed()
.to_vec(),
)
}
/// Derive a Blake2b MAC of length 512 bits (64 bytes) of the data from the provided key, personal and salt.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is present and less than 1 or more than 128
/// bytes and when `personal` or `salt` is more than 32 bytes.
#[expect(clippy::ref_option, reason = "Bindings don't allow to use Option<&Vec<u8>>")]
#[uniffi::export]
pub fn blake2b_mac_512(
key: &Option<Vec<u8>>,
personal: &[u8],
salt: &[u8],
data: &[u8],
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::digest::{FixedOutput as _, Mac as _};
Ok(
blake2b::Blake2bMac512::new_with_salt_and_personal(key.as_deref(), salt, personal)
.map_err(|_| {
CryptoError::InvalidParameter(
"'key' if provided must be between 1 and 128 bytes, 'personal' and 'salt' must be up to \
32 bytes"
.to_owned(),
)
})?
.chain_update(data)
.finalize_fixed()
.to_vec(),
)
}
/// Parameters for [`argon2id`]
#[derive(Clone, Copy, uniffi::Record)]
pub struct Argon2idParameters {
/// Memory size in 1 KiB blocks. Between 8*`parallelism` and (2^32)-1.
pub memory_cost: u32,
/// Number of iterations. Between 1 and (2^32)-1.
pub time_cost: u32,
/// Degree of parallelism. Between 1 and (2^24)-1.
pub parallelism: u32,
/// Size of the output in bytes. Between 1 and 64.
pub output_length: u8,
}
impl TryFrom<Argon2idParameters> for argon2::Params {
type Error = CryptoError;
fn try_from(parameters: Argon2idParameters) -> Result<Self, Self::Error> {
if !(1..=64).contains(¶meters.output_length) {
return Err(CryptoError::InvalidParameter(
"output length must be between 1 and 64 bytes".to_owned(),
));
}
argon2::Params::new(
parameters.memory_cost,
parameters.time_cost,
parameters.parallelism,
Some(parameters.output_length.into()),
)
.map_err(|error| CryptoError::InvalidParameter(error.to_string()))
}
}
/// Derive a key from the provided password and salt using Argon2id.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if the passed parameters are invalid (see
/// [`Argon2idParameters`] for the requirements).
#[uniffi::export]
pub fn argon2id(
password: &[u8],
salt: &[u8],
parameters: Argon2idParameters,
) -> Result<Vec<u8>, CryptoError> {
let context = argon2::Argon2::new(argon2::Argon2id, argon2::Version::V0x13, parameters.try_into()?);
let mut output = vec![0; parameters.output_length as usize];
context
.hash_password_into(password, salt, &mut output)
.map_err(|error| CryptoError::InvalidParameter(error.to_string()))?;
Ok(output)
}
/// Parameters for [`scrypt()`]
#[derive(uniffi::Record)]
pub struct ScryptParameters {
/// The logarithm of the CPU/memory cost parameter (aka `N`). Less than 64. The resulting
/// memory cost will be `2 ^ log_memory_cost` in KiB. For example, `log_memory_cost = 17` would
/// be 128 MiB.
pub log_memory_cost: u8,
/// Block size as multiplicator of 128 bytes (aka `r`). Between 1 and (2^32)-1.
pub block_size: u32,
/// Degree of parallelism / amount of threads (aka `p`). Between 1 and (2^32)-1.
pub parallelism: u32,
/// Size of the output in bytes. Between 10 and 64.
pub output_length: u8,
}
impl TryFrom<ScryptParameters> for scrypt::Params {
type Error = CryptoError;
fn try_from(parameters: ScryptParameters) -> Result<Self, Self::Error> {
scrypt::Params::new(
parameters.log_memory_cost,
parameters.block_size,
parameters.parallelism,
parameters.output_length.into(),
)
.map_err(|error| CryptoError::InvalidParameter(error.to_string()))
}
}
/// Derive a key from the provided password and salt using Scrypt.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if the passed parameters are invalid (see
/// [`ScryptParameters`] for the requirements).
#[uniffi::export]
pub fn scrypt(password: &[u8], salt: &[u8], parameters: ScryptParameters) -> Result<Vec<u8>, CryptoError> {
let mut output = vec![0; parameters.output_length as usize];
scrypt::scrypt(password, salt, ¶meters.try_into()?, &mut output)
.map_err(|error| CryptoError::InvalidParameter(error.to_string()))?;
Ok(output)
}
/// Derive the X25519 public key associated to the provided X25519 secret key.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `secret_key` is not exactly 32 bytes.
#[uniffi::export]
pub fn x25519_derive_public_key(secret_key: &[u8]) -> Result<Vec<u8>, CryptoError> {
let secret_key = x25519::StaticSecret::from(
<[u8; 32]>::try_from(secret_key)
.map_err(|_| CryptoError::InvalidParameter("'secret_key' must be 32 bytes".to_owned()))?,
);
let public_key = x25519::PublicKey::from(&secret_key);
Ok(public_key.as_bytes().to_vec())
}
/// Derive the X25519 shared secret from the provided X25519 public and secret key.
///
/// Note: The resulting shared secret will be hashed with HSalsa20 to ensure uniform distribution.
/// This is compatible with classic NaCl implementations.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `public_key` or `secret_key` is not exactly 32
/// bytes.
#[uniffi::export]
pub fn x25519_hsalsa20_derive_shared_secret(
public_key: &[u8],
secret_key: &[u8],
) -> Result<Vec<u8>, CryptoError> {
let public_key = x25519::PublicKey::from(
<[u8; 32]>::try_from(public_key)
.map_err(|_| CryptoError::InvalidParameter("'public_key' must be 32 bytes".to_owned()))?,
);
let secret_key = x25519::StaticSecret::from(
<[u8; 32]>::try_from(secret_key)
.map_err(|_| CryptoError::InvalidParameter("'secret_key' must be 32 bytes".to_owned()))?,
);
let shared_secret = x25519::SharedSecretHSalsa20::from(secret_key.diffie_hellman(&public_key));
Ok(shared_secret.as_bytes().to_vec())
}
/// Encrypt the provided data using XChaCha20 and append a Poly1305 MAC.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is not exactly 32 bytes or `nonce` is not
/// exactly 24 bytes.
///
/// Returns [`CryptoError::CipherFailed`] if encryption failed.
#[uniffi::export]
pub fn xchacha20_poly1305_encrypt(
key: &[u8],
nonce: &[u8],
mut data: Vec<u8>,
associated_data: &[u8],
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::{aead::AeadInPlace as _, cipher::KeyInit as _};
let cipher = chacha20::XChaCha20Poly1305::new_from_slice(key)
.map_err(|_| CryptoError::InvalidParameter("'key' must be 32 bytes".to_owned()))?;
let nonce: Nonce = nonce
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'nonce' must be 24 bytes".to_owned()))?;
cipher
.encrypt_in_place((&nonce).into(), associated_data, &mut data)
.map_err(|_| CryptoError::CipherFailed)?;
Ok(data)
}
/// Decrypt the provided data using XChaCha20.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is not exactly 32 bytes or `nonce` is not
/// exactly 24 bytes.
///
/// Returns [`CryptoError::CipherFailed`] if decryption failed.
#[uniffi::export]
pub fn xchacha20_poly1305_decrypt(
key: &[u8],
nonce: &[u8],
mut data: Vec<u8>,
associated_data: &[u8],
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::{aead::AeadInPlace as _, cipher::KeyInit as _};
let cipher = chacha20::XChaCha20Poly1305::new_from_slice(key)
.map_err(|_| CryptoError::InvalidParameter("'key' must be 32 bytes".to_owned()))?;
let nonce: Nonce = nonce
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'nonce' must be 24 bytes".to_owned()))?;
cipher
.decrypt_in_place((&nonce).into(), associated_data, &mut data)
.map_err(|_| CryptoError::CipherFailed)?;
Ok(data)
}
/// Encrypt the provided data using XSalsa20 and append a Poly1305 MAC.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is not exactly 32 bytes or `nonce` is not
/// exactly 24 bytes.
///
/// Returns [`CryptoError::CipherFailed`] if encryption failed.
#[uniffi::export]
pub fn xsalsa20_poly1305_encrypt(
key: &[u8],
nonce: &[u8],
mut data: Vec<u8>,
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::{aead::AeadInPlace as _, cipher::KeyInit as _};
let cipher = salsa20::XSalsa20Poly1305::new_from_slice(key)
.map_err(|_| CryptoError::InvalidParameter("'key' must be 32 bytes".to_owned()))?;
let nonce: Nonce = nonce
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'nonce' must be 24 bytes".to_owned()))?;
cipher
.encrypt_in_place((&nonce).into(), &[], &mut data)
.map_err(|_| CryptoError::CipherFailed)?;
Ok(data)
}
/// Decrypt the provided data using XSalsa20.
///
/// # Errors
///
/// Returns [`CryptoError::InvalidParameter`] if `key` is not exactly 32 bytes or `nonce` is not
/// exactly 24 bytes.
///
/// Returns [`CryptoError::CipherFailed`] if decryption failed.
#[uniffi::export]
pub fn xsalsa20_poly1305_decrypt(
key: &[u8],
nonce: &[u8],
mut data: Vec<u8>,
) -> Result<Vec<u8>, CryptoError> {
use crate::crypto::{aead::AeadInPlace as _, cipher::KeyInit as _};
let cipher = salsa20::XSalsa20Poly1305::new_from_slice(key)
.map_err(|_| CryptoError::InvalidParameter("'key' must be 32 bytes".to_owned()))?;
let nonce: Nonce = nonce
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'nonce' must be 24 bytes".to_owned()))?;
cipher
.decrypt_in_place((&nonce).into(), &[], &mut data)
.map_err(|_| CryptoError::CipherFailed)?;
Ok(data)
}
fn ensure_xdance_key_and_nonce<'data>(
key: &'data [u8],
nonce: &'data [u8],
) -> Result<(&'data [u8; 32], &'data [u8; Nonce::LENGTH]), CryptoError> {
let key: &[u8; 32] = key
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'key' must be 32 bytes".to_owned()))?;
let nonce: &[u8; Nonce::LENGTH] = nonce
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'nonce' must be 24 bytes".to_owned()))?;
Ok((key, nonce))
}
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Encryptor`].
#[derive(uniffi::Object)]
pub struct ChunkedXChaCha20Poly1305Encryptor(Mutex<Option<chunked::ChunkedXChaCha20Poly1305Encryptor>>);
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Decryptor`].
#[derive(uniffi::Object)]
pub struct ChunkedXChaCha20Poly1305Decryptor(Mutex<Option<chunked::ChunkedXChaCha20Poly1305Decryptor>>);
#[duplicate_item(
cipher_name;
[ ChunkedXChaCha20Poly1305Encryptor ];
[ ChunkedXChaCha20Poly1305Decryptor ];
)]
#[uniffi::export]
impl cipher_name {
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Encryptor::new`] /
/// [`chunked::ChunkedXChaCha20Poly1305Decryptor::new`].
///
/// # Errors
///
/// Returns an error if `key` is not exactly 32 bytes or `nonce` is not exactly 24 bytes.
#[uniffi::constructor]
pub fn new(key: &[u8], nonce: &[u8], associated_data: &[u8]) -> Result<Self, CryptoError> {
let (key, nonce) = ensure_xdance_key_and_nonce(key, nonce)?;
Ok(Self(Mutex::new(Some(chunked::cipher_name::new(
key,
nonce,
associated_data,
)))))
}
}
/// Binding version of [`chunked::ChunkedXSalsa20Poly1305Encryptor`].
#[derive(uniffi::Object)]
pub struct ChunkedXSalsa20Poly1305Encryptor(Mutex<Option<chunked::ChunkedXSalsa20Poly1305Encryptor>>);
/// Binding version of [`chunked::ChunkedXSalsa20Poly1305Decryptor`].
#[derive(uniffi::Object)]
pub struct ChunkedXSalsa20Poly1305Decryptor(Mutex<Option<chunked::ChunkedXSalsa20Poly1305Decryptor>>);
#[duplicate_item(
cipher_name;
[ ChunkedXSalsa20Poly1305Encryptor ];
[ ChunkedXSalsa20Poly1305Decryptor ];
)]
#[uniffi::export]
impl cipher_name {
/// Binding version of [`chunked::ChunkedXSalsa20Poly1305Encryptor::new`] /
/// [`chunked::ChunkedXSalsa20Poly1305Decryptor::new`].
///
/// # Errors
///
/// Returns an error if `key` is not exactly 32 bytes or `nonce` is not exactly 24 bytes.
#[uniffi::constructor]
pub fn new(key: &[u8], nonce: &[u8]) -> Result<Self, CryptoError> {
let (key, nonce) = ensure_xdance_key_and_nonce(key, nonce)?;
Ok(Self(Mutex::new(Some(chunked::cipher_name::new(key, nonce)))))
}
}
#[duplicate_item(
cipher_name;
[ ChunkedXChaCha20Poly1305Encryptor ];
[ ChunkedXSalsa20Poly1305Encryptor ];
)]
#[uniffi::export]
impl cipher_name {
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Encryptor::encrypt`] /
/// [`chunked::ChunkedXSalsa20Poly1305Encryptor::encrypt`].
///
/// # Errors
///
/// Returns [`CryptoError::CipherFailed`] in case of an internal error.
pub fn encrypt(&self, mut chunk: Vec<u8>) -> Result<Vec<u8>, CryptoError> {
self.0
.lock_ignore_poison()
.as_mut()
.ok_or(CryptoError::CipherFailed)?
.encrypt(&mut chunk);
Ok(chunk)
}
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Encryptor::finalize`] /
/// [`chunked::ChunkedXSalsa20Poly1305Encryptor::finalize`].
///
/// # Errors
///
/// Returns [`CryptoError::CipherFailed`] in case of an internal error.
pub fn finalize(&self) -> Result<Vec<u8>, CryptoError> {
Ok(self
.0
.lock_ignore_poison()
.take()
.ok_or(CryptoError::CipherFailed)?
.finalize()
.into())
}
}
#[duplicate_item(
cipher_name;
[ ChunkedXChaCha20Poly1305Decryptor ];
[ ChunkedXSalsa20Poly1305Decryptor ];
)]
#[uniffi::export]
impl cipher_name {
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Decryptor::decrypt`] /
/// [`chunked::ChunkedXSalsa20Poly1305Decryptor::decrypt`].
///
/// # Errors
///
/// Returns [`CryptoError::CipherFailed`] in case of an internal error.
pub fn decrypt(&self, mut chunk: Vec<u8>) -> Result<Vec<u8>, CryptoError> {
self.0
.lock_ignore_poison()
.as_mut()
.ok_or(CryptoError::CipherFailed)?
.decrypt(&mut chunk);
Ok(chunk)
}
/// Binding version of [`chunked::ChunkedXChaCha20Poly1305Decryptor::finalize_verify`] /
/// [`chunked::ChunkedXSalsa20Poly1305Decryptor::finalize_verify`].
///
/// # Errors
///
/// Returns [`CryptoError::CipherFailed`] in case of an internal error or in case the tag does not match.
pub fn finalize_verify(&self, expected_tag: &[u8]) -> Result<(), CryptoError> {
let expected_tag = expected_tag
.try_into()
.map_err(|_| CryptoError::InvalidParameter("'tag' must be 16 bytes".to_owned()))?;
Ok(self
.0
.lock_ignore_poison()
.take()
.ok_or(CryptoError::CipherFailed)?
.finalize_verify(expected_tag)?)
}
}
[Dauer der Verarbeitung: 0.22 Sekunden, vorverarbeitet 2026-04-27]
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2026-05-26
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