aescry 1.0.0

AES encryption and decryption, including the AES Crypt file format.
Documentation 
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use std::fmt::LowerHex;
use std::mem;

pub trait SliceToHex<T: LowerHex> {
    fn slice_to_hex(&self) -> String;
}

impl<T> SliceToHex<T> for [T] where T: std::fmt::LowerHex {
    fn slice_to_hex(&self) -> String {
        let mut hex_digest = String::with_capacity(mem::size_of_val(self) * 2);

        for v in self {
            hex_digest.push_str(&format!("{:0>pad$x}", v, pad=mem::size_of::<T>() * 2));
        }

        hex_digest
    }
}

#[test]
fn test_slice_to_hex() {
    use crate::util::SliceToHex;
    let a: [u8; 1] = [0x65];
    assert_eq!(<[u8]>::slice_to_hex(&a), "65");
    let b: [u16; 1] = [0x65];
    assert_eq!(<[u16]>::slice_to_hex(&b), "0065");
    let c: [u32; 1] = [0x65];
    assert_eq!(<[u32]>::slice_to_hex(&c), "00000065");
    let d: [u64; 1] = [0x65];
    assert_eq!(<[u64]>::slice_to_hex(&d), "0000000000000065");
}