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use crate::types::{
AEADAlgorithm,
SymmetricAlgorithm,
};
use crate::packet;
use crate::Packet;
use crate::Error;
use crate::Result;
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct AED1 {
pub(crate) common: packet::Common,
sym_algo: SymmetricAlgorithm,
aead: AEADAlgorithm,
chunk_size: usize,
iv: Box<[u8]>,
container: packet::Container,
}
impl std::ops::Deref for AED1 {
type Target = packet::Container;
fn deref(&self) -> &Self::Target {
&self.container
}
}
impl std::ops::DerefMut for AED1 {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.container
}
}
impl AED1 {
pub fn new(sym_algo: SymmetricAlgorithm,
aead: AEADAlgorithm,
chunk_size: usize,
iv: Box<[u8]>) -> Result<Self> {
if chunk_size.count_ones() != 1 {
return Err(Error::InvalidArgument(
format!("chunk size is not a power of two: {}", chunk_size))
.into());
}
if chunk_size < 64 {
return Err(Error::InvalidArgument(
format!("chunk size is too small: {}", chunk_size))
.into());
}
Ok(AED1 {
common: Default::default(),
sym_algo,
aead,
chunk_size,
iv,
container: Default::default(),
})
}
pub fn symmetric_algo(&self) -> SymmetricAlgorithm {
self.sym_algo
}
pub fn set_symmetric_algo(&mut self, sym_algo: SymmetricAlgorithm)
-> SymmetricAlgorithm {
::std::mem::replace(&mut self.sym_algo, sym_algo)
}
pub fn aead(&self) -> AEADAlgorithm {
self.aead
}
pub fn set_aead(&mut self, aead: AEADAlgorithm) -> AEADAlgorithm {
::std::mem::replace(&mut self.aead, aead)
}
pub fn chunk_size(&self) -> usize {
self.chunk_size
}
pub fn set_chunk_size(&mut self, chunk_size: usize) -> Result<()> {
if chunk_size.count_ones() != 1 {
return Err(Error::InvalidArgument(
format!("chunk size is not a power of two: {}", chunk_size))
.into());
}
if chunk_size < 64 {
return Err(Error::InvalidArgument(
format!("chunk size is too small: {}", chunk_size))
.into());
}
self.chunk_size = chunk_size;
Ok(())
}
pub fn chunk_digest_size(&self) -> Result<usize> {
Ok(self.chunk_size + self.aead.digest_size()?)
}
pub fn iv(&self) -> &[u8] {
&self.iv
}
pub fn set_iv(&mut self, iv: Box<[u8]>) -> Box<[u8]> {
::std::mem::replace(&mut self.iv, iv)
}
}
impl From<AED1> for Packet {
fn from(p: AED1) -> Self {
super::AED::from(p).into()
}
}
impl From<AED1> for super::AED {
fn from(p: AED1) -> Self {
super::AED::V1(p)
}
}