adding optional dependencies

[lattice0]

Can I add optional dependencies to I can remove libc dependencies and other things? Will this be welcome?

I'm trying to determinate which algorithms use libc. Looks like it's used on

extern {
    pub fn rust_crypto_util_fixed_time_eq_asm(
            lhsp: *const u8,
            rhsp: *const u8,
            count: libc::size_t) -> u32;
    pub fn rust_crypto_util_secure_memset(
            dst: *mut u8,
            val: libc::uint8_t,
            count: libc::size_t);
}

pub fn secure_memset(dst: &mut [u8], val: u8) {
    unsafe {
        rust_crypto_util_secure_memset(
            dst.as_mut_ptr(),
            val,
            dst.len() as libc::size_t);
    }
}

which are for algorithms dependent on time. Which one?

Looks like serialize is only needed if you use result_str on digest or on pbkdf2

rand is only used on scrypt

time is only used on fortuna.

Well, since these algorithms depend on other crates, can I make these features: pbkdf2, scrypt, fortuna?

I'm trying to get rid of unnecessary dependencies on my project so I'd like for this crate to have no dependencies.

I still need to determinate what src/util_helpers.asm, src/aesni_helpers.asm are used for.

Also, why this lib isn't updated since 2016? Is it because it's too good that everything is ok or because no one maintains it anymore?

[newpavlov]

This crate is unmaintained. See: https://rustsec.org/advisories/RUSTSEC-2016-0005.html