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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/ohttp/src/hpke.rs
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/ohttp/src/hpke.rs')
-rw-r--r--third_party/rust/ohttp/src/hpke.rs92
1 files changed, 92 insertions, 0 deletions
diff --git a/third_party/rust/ohttp/src/hpke.rs b/third_party/rust/ohttp/src/hpke.rs
new file mode 100644
index 0000000000..7bca571923
--- /dev/null
+++ b/third_party/rust/ohttp/src/hpke.rs
@@ -0,0 +1,92 @@
+macro_rules! convert_enum {
+ ($(#[$meta:meta])* $vis:vis enum $name:ident {
+ $($(#[$vmeta:meta])* $vname:ident $(= $val:expr)?,)*
+ }) => {
+ $(#[$meta])*
+ #[derive(Clone, Copy, Debug, PartialEq, Eq)]
+ $vis enum $name {
+ $($(#[$vmeta])* $vname $(= $val)?,)*
+ }
+
+ impl std::convert::TryFrom<u16> for $name {
+ type Error = crate::Error;
+
+ fn try_from(v: u16) -> Result<Self, Self::Error> {
+ match v {
+ $(x if x == $name::$vname as u16 => Ok($name::$vname),)*
+ _ => Err(crate::Error::Unsupported),
+ }
+ }
+ }
+
+ impl std::convert::From<$name> for u16 {
+ fn from(v: $name) -> u16 {
+ v as u16
+ }
+ }
+ }
+}
+
+convert_enum! {
+pub enum Kem {
+ X25519Sha256 = 32,
+}
+}
+
+impl Kem {
+ #[must_use]
+ pub fn n_enc(self) -> usize {
+ match self {
+ Kem::X25519Sha256 => 32,
+ }
+ }
+
+ #[must_use]
+ pub fn n_pk(self) -> usize {
+ match self {
+ Kem::X25519Sha256 => 32,
+ }
+ }
+}
+
+convert_enum! {
+ pub enum Kdf {
+ HkdfSha256 = 1,
+ HkdfSha384 = 2,
+ HkdfSha512 = 3,
+ }
+}
+
+convert_enum! {
+ pub enum Aead {
+ Aes128Gcm = 1,
+ Aes256Gcm = 2,
+ ChaCha20Poly1305 = 3,
+ }
+}
+
+impl Aead {
+ /// The size of the key for this AEAD.
+ #[must_use]
+ pub fn n_k(self) -> usize {
+ match self {
+ Aead::Aes128Gcm => 16,
+ Aead::Aes256Gcm | Aead::ChaCha20Poly1305 => 32,
+ }
+ }
+
+ /// The size of the nonce for this AEAD.
+ #[must_use]
+ pub fn n_n(self) -> usize {
+ match self {
+ Aead::Aes128Gcm | Aead::Aes256Gcm | Aead::ChaCha20Poly1305 => 12,
+ }
+ }
+
+ /// The size of the tag for this AEAD.
+ #[must_use]
+ #[allow(clippy::unused_self)] // This is only presently constant.
+ pub fn n_t(self) -> usize {
+ 16
+ }
+}