base16ct-0.2.0/.cargo_vcs_info.json0000644000000001460000000000100124440ustar { "git": { "sha1": "1987929403b544d4632121aacff3d28aa09a0771" }, "path_in_vcs": "base16ct" }base16ct-0.2.0/CHANGELOG.md000064400000000000000000000011361046102023000130450ustar 00000000000000# Changelog All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). ## 0.2.0 (2023-02-26) ### Changed - MSRV 1.60 ([#802]) - Lint improvements ([#824]) [#802]: https://github.com/RustCrypto/formats/pull/802 [#824]: https://github.com/RustCrypto/formats/pull/824 ## 0.1.1 (2022-01-15) ### Added - `HexDisplay` type ([#329]) [#329]: https://github.com/RustCrypto/formats/pull/329 ## 0.1.0 (2022-01-12) - Initial release base16ct-0.2.0/Cargo.toml0000644000000024160000000000100104440ustar # THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies. # # If you are reading this file be aware that the original Cargo.toml # will likely look very different (and much more reasonable). # See Cargo.toml.orig for the original contents. [package] edition = "2021" rust-version = "1.60" name = "base16ct" version = "0.2.0" authors = ["RustCrypto Developers"] description = """ Pure Rust implementation of Base16 a.k.a hexadecimal (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable \"best effort\" constant-time operation and embedded-friendly no_std support """ documentation = "https://docs.rs/base16ct" readme = "README.md" keywords = [ "crypto", "hex", "hexadecimal", ] categories = [ "cryptography", "encoding", "no-std", "parser-implementations", ] license = "Apache-2.0 OR MIT" repository = "https://github.com/RustCrypto/formats/tree/master/base16ct" [package.metadata.docs.rs] all-features = true rustdoc-args = [ "--cfg", "docsrs", ] [features] alloc = [] std = ["alloc"] base16ct-0.2.0/Cargo.toml.orig0000644000000014140000000000100114000ustar [package] name = "base16ct" version = "0.2.0" description = """ Pure Rust implementation of Base16 a.k.a hexadecimal (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort" constant-time operation and embedded-friendly no_std support """ authors = ["RustCrypto Developers"] license = "Apache-2.0 OR MIT" documentation = "https://docs.rs/base16ct" repository = "https://github.com/RustCrypto/formats/tree/master/base16ct" categories = ["cryptography", "encoding", "no-std", "parser-implementations"] keywords = ["crypto", "hex", "hexadecimal"] readme = "README.md" edition = "2021" rust-version = "1.60" [features] alloc = [] std = ["alloc"] [package.metadata.docs.rs] all-features = true rustdoc-args = ["--cfg", "docsrs"] base16ct-0.2.0/Cargo.toml.orig000064400000000000000000000014141046102023000141220ustar 00000000000000[package] name = "base16ct" version = "0.2.0" description = """ Pure Rust implementation of Base16 a.k.a hexadecimal (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort" constant-time operation and embedded-friendly no_std support """ authors = ["RustCrypto Developers"] license = "Apache-2.0 OR MIT" documentation = "https://docs.rs/base16ct" repository = "https://github.com/RustCrypto/formats/tree/master/base16ct" categories = ["cryptography", "encoding", "no-std", "parser-implementations"] keywords = ["crypto", "hex", "hexadecimal"] readme = "README.md" edition = "2021" rust-version = "1.60" [features] alloc = [] std = ["alloc"] [package.metadata.docs.rs] all-features = true rustdoc-args = ["--cfg", "docsrs"] base16ct-0.2.0/LICENSE-APACHE000064400000000000000000000251411046102023000131620ustar 00000000000000 Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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See the License for the specific language governing permissions and limitations under the License. base16ct-0.2.0/LICENSE-MIT000064400000000000000000000021671046102023000126750ustar 00000000000000Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com) Copyright (c) 2022 The RustCrypto Project Developers Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. base16ct-0.2.0/README.md000064400000000000000000000040641046102023000125160ustar 00000000000000# [RustCrypto]: Constant-Time Base16 (hexadecimal) [![crate][crate-image]][crate-link] [![Docs][docs-image]][docs-link] [![Build Status][build-image]][build-link] ![Apache2/MIT licensed][license-image] ![Rust Version][rustc-image] [![Project Chat][chat-image]][chat-link] Pure Rust implementation of Base16 ([RFC 4648]). Implements lower and upper case Base16 variants without data-dependent branches or lookup tables, thereby providing portable "best effort" constant-time operation. Supports `no_std` environments and avoids heap allocations in the core API (but also provides optional `alloc` support for convenience). [Documentation][docs-link] ## Minimum Supported Rust Version This crate requires **Rust 1.60** 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](http://www.apache.org/licenses/LICENSE-2.0) * [MIT license](http://opensource.org/licenses/MIT) 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. [//]: # (badges) [crate-image]: https://buildstats.info/crate/base16ct [crate-link]: https://crates.io/crates/base16ct [docs-image]: https://docs.rs/base16ct/badge.svg [docs-link]: https://docs.rs/base16ct/ [build-image]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml/badge.svg [build-link]: https://github.com/RustCrypto/formats/actions/workflows/base16ct.yml [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg [rustc-image]: https://img.shields.io/badge/rustc-1.60+-blue.svg [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/300570-formats [//]: # (links) [RustCrypto]: https://github.com/rustcrypto [RFC 4648]: https://tools.ietf.org/html/rfc4648 [Util::Lookup]: https://arxiv.org/pdf/2108.04600.pdf base16ct-0.2.0/src/display.rs000064400000000000000000000015421046102023000140370ustar 00000000000000use core::fmt; /// `core::fmt` presenter for binary data encoded as hexadecimal (Base16). #[derive(Copy, Clone, Debug, Eq, PartialEq)] pub struct HexDisplay<'a>(pub &'a [u8]); impl fmt::Display for HexDisplay<'_> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{:X}", self) } } impl fmt::UpperHex for HexDisplay<'_> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { let mut hex = [0u8; 2]; for &byte in self.0 { f.write_str(crate::upper::encode_str(&[byte], &mut hex)?)?; } Ok(()) } } impl fmt::LowerHex for HexDisplay<'_> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { let mut hex = [0u8; 2]; for &byte in self.0 { f.write_str(crate::lower::encode_str(&[byte], &mut hex)?)?; } Ok(()) } } base16ct-0.2.0/src/error.rs000064400000000000000000000014561046102023000135270ustar 00000000000000use core::fmt; /// Result type with the `base16ct` crate's [`Error`] type. pub type Result = core::result::Result; /// Error type #[derive(Clone, Eq, PartialEq, Debug)] pub enum Error { /// Invalid encoding of provided Base16 string. InvalidEncoding, /// Insufficient output buffer length. InvalidLength, } impl fmt::Display for Error { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { Error::InvalidEncoding => f.write_str("invalid Base16 encoding"), Error::InvalidLength => f.write_str("invalid Base16 length"), } } } #[cfg(feature = "std")] impl std::error::Error for Error {} impl From for core::fmt::Error { fn from(_: Error) -> core::fmt::Error { core::fmt::Error::default() } } base16ct-0.2.0/src/lib.rs000064400000000000000000000073601046102023000131440ustar 00000000000000#![no_std] #![cfg_attr(docsrs, feature(doc_auto_cfg))] #![doc( html_logo_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg", html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg" )] #![warn( clippy::mod_module_files, clippy::unwrap_used, missing_docs, rust_2018_idioms, unused_lifetimes, unused_qualifications )] //! Pure Rust implementation of Base16 ([RFC 4648], a.k.a. hex). //! //! Implements lower and upper case Base16 variants without data-dependent branches //! or lookup tables, thereby providing portable "best effort" constant-time //! operation. Not constant-time with respect to message length (only data). //! //! Supports `no_std` environments and avoids heap allocations in the core API //! (but also provides optional `alloc` support for convenience). //! //! Based on code from: //! //! # Examples //! ``` //! let lower_hex_str = "abcd1234"; //! let upper_hex_str = "ABCD1234"; //! let mixed_hex_str = "abCD1234"; //! let raw = b"\xab\xcd\x12\x34"; //! //! let mut buf = [0u8; 16]; //! // length of return slice can be different from the input buffer! //! let res = base16ct::lower::decode(lower_hex_str, &mut buf).unwrap(); //! assert_eq!(res, raw); //! let res = base16ct::lower::encode(raw, &mut buf).unwrap(); //! assert_eq!(res, lower_hex_str.as_bytes()); //! // you also can use `encode_str` and `encode_string` to get //! // `&str` and `String` respectively //! let res: &str = base16ct::lower::encode_str(raw, &mut buf).unwrap(); //! assert_eq!(res, lower_hex_str); //! //! let res = base16ct::upper::decode(upper_hex_str, &mut buf).unwrap(); //! assert_eq!(res, raw); //! let res = base16ct::upper::encode(raw, &mut buf).unwrap(); //! assert_eq!(res, upper_hex_str.as_bytes()); //! //! // In cases when you don't know if input contains upper or lower //! // hex-encoded value, then use functions from the `mixed` module //! let res = base16ct::mixed::decode(lower_hex_str, &mut buf).unwrap(); //! assert_eq!(res, raw); //! let res = base16ct::mixed::decode(upper_hex_str, &mut buf).unwrap(); //! assert_eq!(res, raw); //! let res = base16ct::mixed::decode(mixed_hex_str, &mut buf).unwrap(); //! assert_eq!(res, raw); //! ``` //! //! [RFC 4648]: https://tools.ietf.org/html/rfc4648 #[cfg(feature = "alloc")] #[macro_use] extern crate alloc; #[cfg(feature = "std")] extern crate std; /// Function for decoding and encoding lower Base16 (hex) pub mod lower; /// Function for decoding mixed Base16 (hex) pub mod mixed; /// Function for decoding and encoding upper Base16 (hex) pub mod upper; /// Display formatter for hex. mod display; /// Error types. mod error; pub use crate::{ display::HexDisplay, error::{Error, Result}, }; #[cfg(feature = "alloc")] use alloc::{string::String, vec::Vec}; /// Compute decoded length of the given hex-encoded input. #[inline(always)] pub fn decoded_len(bytes: &[u8]) -> Result { if bytes.len() & 1 == 0 { Ok(bytes.len() / 2) } else { Err(Error::InvalidLength) } } /// Get the length of Base16 (hex) produced by encoding the given bytes. #[inline(always)] pub fn encoded_len(bytes: &[u8]) -> usize { bytes.len() * 2 } fn decode_inner<'a>( src: &[u8], dst: &'a mut [u8], decode_nibble: impl Fn(u8) -> u16, ) -> Result<&'a [u8]> { let dst = dst .get_mut(..decoded_len(src)?) .ok_or(Error::InvalidLength)?; let mut err: u16 = 0; for (src, dst) in src.chunks_exact(2).zip(dst.iter_mut()) { let byte = (decode_nibble(src[0]) << 4) | decode_nibble(src[1]); err |= byte >> 8; *dst = byte as u8; } match err { 0 => Ok(dst), _ => Err(Error::InvalidEncoding), } } base16ct-0.2.0/src/lower.rs000064400000000000000000000050351046102023000135230ustar 00000000000000use crate::{decode_inner, encoded_len, Error}; #[cfg(feature = "alloc")] use crate::{decoded_len, String, Vec}; /// Decode a lower Base16 (hex) string into the provided destination buffer. pub fn decode(src: impl AsRef<[u8]>, dst: &mut [u8]) -> Result<&[u8], Error> { decode_inner(src.as_ref(), dst, decode_nibble) } /// Decode a lower Base16 (hex) string into a byte vector. #[cfg(feature = "alloc")] pub fn decode_vec(input: impl AsRef<[u8]>) -> Result, Error> { let mut output = vec![0u8; decoded_len(input.as_ref())?]; decode(input, &mut output)?; Ok(output) } /// Encode the input byte slice as lower Base16. /// /// Writes the result into the provided destination slice, returning an /// ASCII-encoded lower Base16 (hex) string value. pub fn encode<'a>(src: &[u8], dst: &'a mut [u8]) -> Result<&'a [u8], Error> { let dst = dst .get_mut(..encoded_len(src)) .ok_or(Error::InvalidLength)?; for (src, dst) in src.iter().zip(dst.chunks_exact_mut(2)) { dst[0] = encode_nibble(src >> 4); dst[1] = encode_nibble(src & 0x0f); } Ok(dst) } /// Encode input byte slice into a [`&str`] containing lower Base16 (hex). pub fn encode_str<'a>(src: &[u8], dst: &'a mut [u8]) -> Result<&'a str, Error> { encode(src, dst).map(|r| unsafe { core::str::from_utf8_unchecked(r) }) } /// Encode input byte slice into a [`String`] containing lower Base16 (hex). /// /// # Panics /// If `input` length is greater than `usize::MAX/2`. #[cfg(feature = "alloc")] pub fn encode_string(input: &[u8]) -> String { let elen = encoded_len(input); let mut dst = vec![0u8; elen]; let res = encode(input, &mut dst).expect("dst length is correct"); debug_assert_eq!(elen, res.len()); unsafe { String::from_utf8_unchecked(dst) } } /// Decode a single nibble of lower hex #[inline(always)] fn decode_nibble(src: u8) -> u16 { // 0-9 0x30-0x39 // A-F 0x41-0x46 or a-f 0x61-0x66 let byte = src as i16; let mut ret: i16 = -1; // 0-9 0x30-0x39 // if (byte > 0x2f && byte < 0x3a) ret += byte - 0x30 + 1; // -47 ret += (((0x2fi16 - byte) & (byte - 0x3a)) >> 8) & (byte - 47); // a-f 0x61-0x66 // if (byte > 0x60 && byte < 0x67) ret += byte - 0x61 + 10 + 1; // -86 ret += (((0x60i16 - byte) & (byte - 0x67)) >> 8) & (byte - 86); ret as u16 } /// Encode a single nibble of hex #[inline(always)] fn encode_nibble(src: u8) -> u8 { let mut ret = src as i16 + 0x30; // 0-9 0x30-0x39 // a-f 0x61-0x66 ret += ((0x39i16 - ret) >> 8) & (0x61i16 - 0x3a); ret as u8 } base16ct-0.2.0/src/mixed.rs000064400000000000000000000024111046102023000134740ustar 00000000000000use crate::{decode_inner, Error}; #[cfg(feature = "alloc")] use crate::{decoded_len, Vec}; /// Decode a mixed Base16 (hex) string into the provided destination buffer. pub fn decode(src: impl AsRef<[u8]>, dst: &mut [u8]) -> Result<&[u8], Error> { decode_inner(src.as_ref(), dst, decode_nibble) } /// Decode a mixed Base16 (hex) string into a byte vector. #[cfg(feature = "alloc")] pub fn decode_vec(input: impl AsRef<[u8]>) -> Result, Error> { let mut output = vec![0u8; decoded_len(input.as_ref())?]; decode(input, &mut output)?; Ok(output) } /// Decode a single nibble of lower hex #[inline(always)] fn decode_nibble(src: u8) -> u16 { // 0-9 0x30-0x39 // A-F 0x41-0x46 or a-f 0x61-0x66 let byte = src as i16; let mut ret: i16 = -1; // 0-9 0x30-0x39 // if (byte > 0x2f && byte < 0x3a) ret += byte - 0x30 + 1; // -47 ret += (((0x2fi16 - byte) & (byte - 0x3a)) >> 8) & (byte - 47); // A-F 0x41-0x46 // if (byte > 0x40 && byte < 0x47) ret += byte - 0x41 + 10 + 1; // -54 ret += (((0x40i16 - byte) & (byte - 0x47)) >> 8) & (byte - 54); // a-f 0x61-0x66 // if (byte > 0x60 && byte < 0x67) ret += byte - 0x61 + 10 + 1; // -86 ret += (((0x60i16 - byte) & (byte - 0x67)) >> 8) & (byte - 86); ret as u16 } base16ct-0.2.0/src/upper.rs000064400000000000000000000050461046102023000135300ustar 00000000000000use crate::{decode_inner, encoded_len, Error}; #[cfg(feature = "alloc")] use crate::{decoded_len, String, Vec}; /// Decode an upper Base16 (hex) string into the provided destination buffer. pub fn decode(src: impl AsRef<[u8]>, dst: &mut [u8]) -> Result<&[u8], Error> { decode_inner(src.as_ref(), dst, decode_nibble) } /// Decode an upper Base16 (hex) string into a byte vector. #[cfg(feature = "alloc")] pub fn decode_vec(input: impl AsRef<[u8]>) -> Result, Error> { let mut output = vec![0u8; decoded_len(input.as_ref())?]; decode(input, &mut output)?; Ok(output) } /// Encode the input byte slice as upper Base16. /// /// Writes the result into the provided destination slice, returning an /// ASCII-encoded upper Base16 (hex) string value. pub fn encode<'a>(src: &[u8], dst: &'a mut [u8]) -> Result<&'a [u8], Error> { let dst = dst .get_mut(..encoded_len(src)) .ok_or(Error::InvalidLength)?; for (src, dst) in src.iter().zip(dst.chunks_exact_mut(2)) { dst[0] = encode_nibble(src >> 4); dst[1] = encode_nibble(src & 0x0f); } Ok(dst) } /// Encode input byte slice into a [`&str`] containing upper Base16 (hex). pub fn encode_str<'a>(src: &[u8], dst: &'a mut [u8]) -> Result<&'a str, Error> { encode(src, dst).map(|r| unsafe { core::str::from_utf8_unchecked(r) }) } /// Encode input byte slice into a [`String`] containing upper Base16 (hex). /// /// # Panics /// If `input` length is greater than `usize::MAX/2`. #[cfg(feature = "alloc")] pub fn encode_string(input: &[u8]) -> String { let elen = encoded_len(input); let mut dst = vec![0u8; elen]; let res = encode(input, &mut dst).expect("dst length is correct"); debug_assert_eq!(elen, res.len()); unsafe { crate::String::from_utf8_unchecked(dst) } } /// Decode a single nibble of upper hex #[inline(always)] fn decode_nibble(src: u8) -> u16 { // 0-9 0x30-0x39 // A-F 0x41-0x46 or a-f 0x61-0x66 let byte = src as i16; let mut ret: i16 = -1; // 0-9 0x30-0x39 // if (byte > 0x2f && byte < 0x3a) ret += byte - 0x30 + 1; // -47 ret += (((0x2fi16 - byte) & (byte - 0x3a)) >> 8) & (byte - 47); // A-F 0x41-0x46 // if (byte > 0x40 && byte < 0x47) ret += byte - 0x41 + 10 + 1; // -54 ret += (((0x40i16 - byte) & (byte - 0x47)) >> 8) & (byte - 54); ret as u16 } /// Encode a single nibble of hex #[inline(always)] fn encode_nibble(src: u8) -> u8 { let mut ret = src as i16 + 0x30; // 0-9 0x30-0x39 // A-F 0x41-0x46 ret += ((0x39i16 - ret) >> 8) & (0x41i16 - 0x3a); ret as u8 } base16ct-0.2.0/tests/lib.rs000064400000000000000000000104031046102023000135070ustar 00000000000000//! Integration tests. /// Hexadecimal test vectors struct HexVector { /// Raw bytes raw: &'static [u8], /// Lower hex encoded lower_hex: &'static [u8], /// Upper hex encoded upper_hex: &'static [u8], } const HEX_TEST_VECTORS: &[HexVector] = &[ HexVector { raw: b"", lower_hex: b"", upper_hex: b"", }, HexVector { raw: b"\0", lower_hex: b"00", upper_hex: b"00", }, HexVector { raw: b"***", lower_hex: b"2a2a2a", upper_hex: b"2A2A2A", }, HexVector { raw: b"\x01\x02\x03\x04", lower_hex: b"01020304", upper_hex: b"01020304", }, HexVector { raw: b"\xAD\xAD\xAD\xAD\xAD", lower_hex: b"adadadadad", upper_hex: b"ADADADADAD", }, HexVector { raw: b"\xFF\xFF\xFF\xFF\xFF", lower_hex: b"ffffffffff", upper_hex: b"FFFFFFFFFF", }, ]; #[test] fn lower_encode() { for vector in HEX_TEST_VECTORS { // 10 is the size of the largest encoded test vector let mut buf = [0u8; 10]; let out = base16ct::lower::encode(vector.raw, &mut buf).unwrap(); assert_eq!(vector.lower_hex, out); } } #[test] fn lower_decode() { for vector in HEX_TEST_VECTORS { // 5 is the size of the largest decoded test vector let mut buf = [0u8; 5]; let out = base16ct::lower::decode(vector.lower_hex, &mut buf).unwrap(); assert_eq!(vector.raw, out); } } #[test] fn lower_reject_odd_size_input() { let mut out = [0u8; 3]; assert_eq!( Err(base16ct::Error::InvalidLength), base16ct::lower::decode(b"12345", &mut out), ) } #[test] fn upper_encode() { for vector in HEX_TEST_VECTORS { // 10 is the size of the largest encoded test vector let mut buf = [0u8; 10]; let out = base16ct::upper::encode(vector.raw, &mut buf).unwrap(); assert_eq!(vector.upper_hex, out); } } #[test] fn upper_decode() { for vector in HEX_TEST_VECTORS { // 5 is the size of the largest decoded test vector let mut buf = [0u8; 5]; let out = base16ct::upper::decode(vector.upper_hex, &mut buf).unwrap(); assert_eq!(vector.raw, out); } } #[test] fn upper_reject_odd_size_input() { let mut out = [0u8; 3]; assert_eq!( Err(base16ct::Error::InvalidLength), base16ct::upper::decode(b"12345", &mut out), ) } #[test] fn mixed_decode() { for vector in HEX_TEST_VECTORS { // 5 is the size of the largest decoded test vector let mut buf = [0u8; 5]; let out = base16ct::mixed::decode(vector.upper_hex, &mut buf).unwrap(); assert_eq!(vector.raw, out); let out = base16ct::mixed::decode(vector.lower_hex, &mut buf).unwrap(); assert_eq!(vector.raw, out); } } #[test] fn mixed_reject_odd_size_input() { let mut out = [0u8; 3]; assert_eq!( Err(base16ct::Error::InvalidLength), base16ct::mixed::decode(b"12345", &mut out), ) } #[test] #[cfg(feature = "alloc")] fn encode_and_decode_various_lengths() { let data = [b'X'; 64]; for i in 0..data.len() { let encoded = base16ct::lower::encode_string(&data[..i]); let decoded = base16ct::lower::decode_vec(encoded).unwrap(); assert_eq!(decoded.as_slice(), &data[..i]); let encoded = base16ct::upper::encode_string(&data[..i]); let decoded = base16ct::upper::decode_vec(encoded).unwrap(); assert_eq!(decoded.as_slice(), &data[..i]); let encoded = base16ct::lower::encode_string(&data[..i]); let decoded = base16ct::mixed::decode_vec(encoded).unwrap(); assert_eq!(decoded.as_slice(), &data[..i]); let encoded = base16ct::upper::encode_string(&data[..i]); let decoded = base16ct::mixed::decode_vec(encoded).unwrap(); assert_eq!(decoded.as_slice(), &data[..i]); } } #[test] fn hex_display_upper() { for vector in HEX_TEST_VECTORS { let hex = format!("{:X}", base16ct::HexDisplay(vector.raw)); assert_eq!(hex.as_bytes(), vector.upper_hex); } } #[test] fn hex_display_lower() { for vector in HEX_TEST_VECTORS { let hex = format!("{:x}", base16ct::HexDisplay(vector.raw)); assert_eq!(hex.as_bytes(), vector.lower_hex); } }