1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

// Copyright 2015-2016 Brian Smith.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

//! Safe, fast, small crypto using Rust with BoringSSL's cryptography
//! primitives.
//!
//! # Feature Flags
//!
//! <table>
//! <tr><th>Feature
//!     <th>Description
//! <tr><td><code>alloc (default)</code>
//!     <td>Enable features that require use of the heap, RSA in particular.
//! <tr><td><code>less-safe-getrandom-custom-or-rdrand</code>
//!     <td>Treat user-provided ("custom") and RDRAND-based <code>getrandom</code>
//!         implementations as secure random number generators (see
//!         <code>SecureRandom</code>). This feature only works with
//!         <code>os = "none"</code> targets. See
//!         <a href="https://docs.rs/getrandom/0.2.10/getrandom/macro.register_custom_getrandom.html">
//!             <code>register_custom_getrandom</code>
//!         </a> and <a href="https://docs.rs/getrandom/0.2.10/getrandom/#rdrand-on-x86">
//!             RDRAND on x86
//!         </a> for additional details.
//! <tr><td><code>std</code>
//!     <td>Enable features that use libstd, in particular
//!         <code>std::error::Error</code> integration. Implies `alloc`.
//! <tr><td><code>wasm32_unknown_unknown_js</code>
//!     <td>When this feature is enabled, for the wasm32-unknown-unknown target,
//!         Web APIs will be used to implement features like `ring::rand` that
//!         require an operating environment of some kind. This has no effect
//!         for any other target. This enables the `getrandom` crate's `js`
//!         feature.
//! </table>

// When running mk/package.sh, don't actually build any code.
#![cfg(not(pregenerate_asm_only))]
#![allow(
    clippy::collapsible_if,
    clippy::identity_op,
    clippy::len_without_is_empty,
    clippy::let_unit_value,
    clippy::new_without_default,
    clippy::neg_cmp_op_on_partial_ord,
    clippy::too_many_arguments,
    clippy::type_complexity,
    non_camel_case_types,
    non_snake_case,
    unsafe_code
)]
#![deny(variant_size_differences)]
#![forbid(
    unused_results,
    invalid_reference_casting,
    clippy::char_lit_as_u8,
    clippy::fn_to_numeric_cast,
    clippy::fn_to_numeric_cast_with_truncation,
    clippy::ptr_as_ptr
)]
#![warn(
    clippy::unnecessary_cast,
    clippy::cast_lossless,
    clippy::cast_possible_truncation,
    clippy::cast_possible_wrap,
    clippy::cast_precision_loss,
    clippy::cast_sign_loss
)]
#![no_std]

#[cfg(feature = "alloc")]
extern crate alloc;

#[macro_use]
mod debug;

#[macro_use]
mod prefixed;

#[macro_use]
pub mod test;

#[macro_use]
mod arithmetic;

#[macro_use]
mod bssl;

#[macro_use]
mod polyfill;

pub mod aead;

pub mod agreement;

mod bits;

pub(crate) mod c;
pub mod constant_time;

pub mod io;

mod cpu;
pub mod digest;
mod ec;
mod endian;
pub mod error;
pub mod hkdf;
pub mod hmac;
mod limb;
pub mod pbkdf2;
pub mod pkcs8;
pub mod rand;

#[cfg(feature = "alloc")]
pub mod rsa;

pub mod signature;

mod sealed {
    /// Traits that are designed to only be implemented internally in *ring*.
    //
    // Usage:
    // ```
    // use crate::sealed;
    //
    // pub trait MyType: sealed::Sealed {
    //     // [...]
    // }
    //
    // impl sealed::Sealed for MyType {}
    // ```
    pub trait Sealed {}
}