1 files changed, 105 insertions, 0 deletions
diff --git a/third_party/rust/rust-argon2/src/config.rs b/third_party/rust/rust-argon2/src/config.rs
new file mode 100644
index 0000000000..c63cecc43a
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+++ b/third_party/rust/rust-argon2/src/config.rs
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+// Copyright (c) 2017 Martijn Rijkeboer <mrr@sru-systems.com>
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use super::common;
+use super::thread_mode::ThreadMode;
+use super::variant::Variant;
+use super::version::Version;
+
+/// Structure containing configuration settings.
+///
+/// # Examples
+///
+/// ```
+/// use argon2::{Config, ThreadMode, Variant, Version};
+///
+/// let config = Config::default();
+/// assert_eq!(config.ad, &[]);
+/// assert_eq!(config.hash_length, 32);
+/// assert_eq!(config.lanes, 1);
+/// assert_eq!(config.mem_cost, 4096);
+/// assert_eq!(config.secret, &[]);
+/// assert_eq!(config.thread_mode, ThreadMode::Sequential);
+/// assert_eq!(config.time_cost, 3);
+/// assert_eq!(config.variant, Variant::Argon2i);
+/// assert_eq!(config.version, Version::Version13);
+/// ```
+#[derive(Clone, Debug, PartialEq)]
+pub struct Config<'a> {
+    /// The associated data.
+    pub ad: &'a [u8],
+
+    /// The length of the resulting hash.
+    pub hash_length: u32,
+
+    /// The number of lanes.
+    pub lanes: u32,
+
+    /// The amount of memory requested (KB).
+    pub mem_cost: u32,
+
+    /// The key.
+    pub secret: &'a [u8],
+
+    /// The thread mode.
+    pub thread_mode: ThreadMode,
+
+    /// The number of passes.
+    pub time_cost: u32,
+
+    /// The variant.
+    pub variant: Variant,
+
+    /// The version number.
+    pub version: Version,
+}
+
+impl<'a> Config<'a> {
+    pub fn uses_sequential(&self) -> bool {
+        self.thread_mode == ThreadMode::Sequential || self.lanes == 1
+    }
+}
+
+impl<'a> Default for Config<'a> {
+    fn default() -> Config<'a> {
+        Config {
+            ad: &[],
+            hash_length: common::DEF_HASH_LENGTH,
+            lanes: common::DEF_LANES,
+            mem_cost: common::DEF_MEMORY,
+            secret: &[],
+            thread_mode: ThreadMode::default(),
+            time_cost: common::DEF_TIME,
+            variant: Variant::default(),
+            version: Version::default(),
+        }
+    }
+}
+
+
+#[cfg(test)]
+mod tests {
+
+    use super::*;
+    use variant::Variant;
+    use version::Version;
+
+    #[test]
+    fn default_returns_correct_instance() {
+        let config = Config::default();
+        assert_eq!(config.ad, &[]);
+        assert_eq!(config.hash_length, 32);
+        assert_eq!(config.lanes, 1);
+        assert_eq!(config.mem_cost, 4096);
+        assert_eq!(config.secret, &[]);
+        assert_eq!(config.thread_mode, ThreadMode::Sequential);
+        assert_eq!(config.time_cost, 3);
+        assert_eq!(config.variant, Variant::Argon2i);
+        assert_eq!(config.version, Version::Version13);
+    }
+}