serde_encrypt/serialize/impls/
cbor_serializer.rs

1use crate::{serialize::TypedSerialized, Error};
2use alloc::{format, vec::Vec};
3use core::marker::PhantomData;
4use serde::{Deserialize, Serialize};
5
6/// [CBOR](https://docs.rs/serde_cbor) serializer
7#[derive(Debug)]
8pub struct CborSerializer<T> {
9    serialized: Vec<u8>,
10    _type: PhantomData<T>,
11}
12
13impl<T> TypedSerialized for CborSerializer<T> {
14    type T = T;
15
16    fn new(serialized: Vec<u8>) -> Self
17    where
18        Self: Sized,
19    {
20        Self {
21            serialized,
22            _type: PhantomData::default(),
23        }
24    }
25
26    fn as_slice(&self) -> &[u8] {
27        &self.serialized
28    }
29
30    fn into_vec(self) -> Vec<u8> {
31        self.serialized
32    }
33
34    /// # Failures
35    ///
36    /// - [SerializationError](serde_encrypt_core::error::ErrorKind::SerializationError) when failed to serialize message.
37    fn serialize(v: &Self::T) -> Result<Self, Error>
38    where
39        Self: Sized,
40        Self::T: Serialize,
41    {
42        let serialized = serde_cbor::to_vec(v).map_err(|e| {
43            Error::serialization_error(&format!("failed to serialize data by serde_cbor: {:?}", e))
44        })?;
45        Ok(Self::new(serialized))
46    }
47
48    /// # Failures
49    ///
50    /// - [DeserializationError](serde_encrypt_core::error::ErrorKind::DeserializationError) when failed to deserialize decrypted message.
51    fn deserialize<'de>(&'de self) -> Result<Self::T, Error>
52    where
53        Self::T: Deserialize<'de>,
54    {
55        serde_cbor::from_slice(self.as_slice()).map_err(|e| {
56            Error::deserialization_error(&format!(
57                "error on serde_cbor deserialization after decryption: {:?}",
58                e
59            ))
60        })
61    }
62}
63
64#[cfg(test)]
65mod tests {
66    use super::*;
67
68    #[test]
69    fn test_cbor_serializer() -> Result<(), Error> {
70        #[derive(PartialEq, Debug, Serialize, Deserialize)]
71        struct Message(i32);
72
73        let msg = Message(42);
74
75        let serialized_msg = CborSerializer::serialize(&msg)?;
76        let deserialized_msg = serialized_msg.deserialize()?;
77
78        assert_eq!(msg, deserialized_msg);
79
80        Ok(())
81    }
82}
serde_encrypt/serialize/impls/cbor_serializer.rs

serde_encrypt/serialize/impls/
cbor_serializer.rs
