Module hex

Hex encoding/decoding with data-independent constant time(-ish) operation.

Adapted from this C++ implementation:

https://github.com/Sc00bz/ConstTimeEncoding/blob/master/hex.cpp

Copyright (c) 2014 Steve “Sc00bz” Thomas (steve at tobtu dot com) Derived code is dual licensed MIT + Apache 2.0 (with permission from @Sc00bz)

Usage

The main API acts as a drop-in replacement for the hex crate

Encoding

Use the hex::encode method:

use subtle_encoding::hex;

let encoded = hex::encode([0, 1, 2, 3, 4, 5]);

// Prints the hex encoded version: "000102030405"
println!("hex encoded: {}", String::from_utf8(encoded).unwrap());

By default hex is encoded in lower-case. To encode upper-case hex, use the hex::encode_upper method.

Decoding

Use the hex::decode method, or hex::decode_upper for upper-case hex.

Structs

Hex

Hexadecimal Encoding (a.k.a. Base16)

Functions

decode

Decode the given data from lower-case hexadecimal, returning a Vec<u8> of the decoded data on success, or an Error.

decode_upper

Decode the given data from upper-case hexadecimal, returning a Vec<u8> of the decoded data on success, or an Error.

encode

Encode the given data as lower-case hexadecimal, returning a Vec<u8>

encode_upper

Encode the given data as upper-case hexadecimal, returning a Vec<u8>