mbedtls 0.13.5

Idiomatic Rust wrapper for MbedTLS, allowing you to use MbedTLS with only safe code while being able to use such great Rust features like error handling and closures. Building on MbedTLS's focus on embedded use, this crate can be used in a no_std environment.
Documentation 
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/* Copyright (c) Fortanix, Inc.
 *
 * Licensed under the GNU General Public License, version 2 <LICENSE-GPL or
 * https://www.gnu.org/licenses/gpl-2.0.html> or the Apache License, Version
 * 2.0 <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0>, at your
 * option. This file may not be copied, modified, or distributed except
 * according to those terms. */

use crate::error::{IntoResult, Result};
use mbedtls_sys::*;

define!(
    #[c_ty(dhm_context)]
    #[repr(C)]
    struct Dhm;
    const init: fn() -> Self = dhm_init;
    const drop: fn(&mut Self) = dhm_free;
    impl<'a> Into<ptr> {}
);

impl Dhm {
    /// Takes both DER and PEM forms of FFDH parameters in `DHParams` format.
    ///
    /// When calling on PEM-encoded data, `params` must be NULL-terminated
    pub fn from_params(params: &[u8]) -> Result<Dhm> {
        let mut ret = Self::init();
        unsafe { dhm_parse_dhm(&mut ret.inner, params.as_ptr(), params.len()) }.into_result()?;
        Ok(ret)
    }
}