Crate tls_codec

RustCrypto: TLS Codec

	crates.io	docs.rs
tls_codec
tls_codec_derive

This crate implements the TLS codec as defined in RFC 8446 as well as some extensions required by MLS.

With the derive feature TlsSerialize and TlsDeserialize can be derived.

The crate also provides the following data structures that implement TLS serialization/deserialization

• u8, u16, u32, u64
• TlsVecU8, TlsVecU16, TlsVecU32
• SecretTlsVecU8, SecretTlsVecU16, SecretTlsVecU32 The same as the TlsVec* versions but it implements zeroize, requiring the elements to implement zeroize as well.
• TlsSliceU8, TlsSliceU16, TlsSliceU32 are lightweight wrapper for slices that allow to serialize them without having to create a TlsVec*.
• TlsByteSliceU8, TlsByteSliceU16, TlsByteSliceU32, and TlsByteVecU8, TlsByteVecU16, TlsByteVecU32 are provided with optimized implementations for byte vectors.
• [u8; l], for l ∈ [1..128]
• Serialize for Option<T> where T: Serialize
• Deserialize for Option<T> where T: Deserialize
• Serialize for (T, U) and (T, U, V) where T, U, V implement Serialize`
• Deserialize for (T, U) and (T, U, V) where T, U, V implement Deserialize`

Minimum Supported Rust Version

This crate requires Rust 1.60.0 at a minimum.

We may change the MSRV in the future, but it will be accompanied by a minor version bump.

License

Licensed under either of:

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Usage

use tls_codec::{TlsVecU8, Serialize, Deserialize};
let mut b = &[1u8, 4, 77, 88, 1, 99] as &[u8];

let a = u8::tls_deserialize(&mut b).expect("Unable to tls_deserialize");
assert_eq!(1, a);
println!("b: {:?}", b);
let v = TlsVecU8::<u8>::tls_deserialize(&mut b).expect("Unable to tls_deserialize");
assert_eq!(&[77, 88, 1, 99], v.as_slice());

Structs

• SecretTlsVecU8
• SecretTlsVecU16
• SecretTlsVecU24
• SecretTlsVecU32
• SecretVLBytesstd
  A wrapper struct around VLBytes that implements ZeroizeOnDrop. It behaves just like VLBytes, except that it doesn’t allow conversion into a Vec<u8>.
• TlsByteSliceU8
• TlsByteSliceU16
• TlsByteSliceU24
• TlsByteSliceU32
• TlsByteVecU8
• TlsByteVecU16
• TlsByteVecU24
• TlsByteVecU32
• TlsSliceU8
• TlsSliceU16
• TlsSliceU24
• TlsSliceU32
• TlsVecU8
• TlsVecU16
• TlsVecU24
• TlsVecU32
• U24
  A 3 byte wide unsigned integer type as defined in RFC 5246.
• VLByteSlice
• VLBytes
  Variable-length encoded byte vectors. Use this struct if bytes are encoded. This is faster than the generic version.

Enums

• Error
  Errors that are thrown by this crate.

Traits

• Deserialize
  The Deserialize trait defines functions to deserialize a byte slice to a struct or enum.
• DeserializeBytes
  The DeserializeBytes trait defines functions to deserialize a byte slice to a struct or enum. In contrast to Deserialize, this trait operates directly on byte slices and can return any remaining bytes.
• Serialize
  The Serialize trait provides functions to serialize a struct or enum.
• SerializeBytes
  The SerializeBytes trait provides a function to serialize a struct or enum.
• Size
  The Size trait needs to be implemented by any struct that should be efficiently serialized. This allows to collect the length of a serialized structure before allocating memory.

Attribute Macros

• conditionally_deserializableconditional_deserialization
  The conditionally_deserializable attribute macro creates two versions of the affected struct: One that implements the Deserialize and DeserializeBytes traits and one that does not. It does so by introducing a boolean const generic that indicates if the struct can be deserialized or not.

Derive Macros

• TlsDeserializederive
• TlsDeserializeBytesderive
• TlsSerializederive
• TlsSerializeBytesderive
• TlsSizederive