Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 187 insertions, 0 deletions

diff --git a/third_party/rust/neqo-crypto/src/hp.rs b/third_party/rust/neqo-crypto/src/hp.rs
new file mode 100644
index 0000000000..f968943c00
--- /dev/null
+++ b/third_party/rust/neqo-crypto/src/hp.rs
@@ -0,0 +1,187 @@
+// 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 crate::constants::{
+    Cipher, Version, TLS_AES_128_GCM_SHA256, TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256,
+};
+use crate::err::{secstatus_to_res, Error, Res};
+use crate::p11::{
+    Context, Item, PK11SymKey, PK11_CipherOp, PK11_CreateContextBySymKey, PK11_Encrypt,
+    PK11_GetBlockSize, SymKey, CKA_ENCRYPT, CKM_AES_ECB, CKM_CHACHA20, CK_ATTRIBUTE_TYPE,
+    CK_CHACHA20_PARAMS, CK_MECHANISM_TYPE,
+};
+
+use std::cell::RefCell;
+use std::convert::TryFrom;
+use std::fmt::{self, Debug};
+use std::os::raw::{c_char, c_int, c_uint};
+use std::ptr::{addr_of_mut, null, null_mut};
+use std::rc::Rc;
+
+experimental_api!(SSL_HkdfExpandLabelWithMech(
+    version: Version,
+    cipher: Cipher,
+    prk: *mut PK11SymKey,
+    handshake_hash: *const u8,
+    handshake_hash_len: c_uint,
+    label: *const c_char,
+    label_len: c_uint,
+    mech: CK_MECHANISM_TYPE,
+    key_size: c_uint,
+    secret: *mut *mut PK11SymKey,
+));
+
+#[derive(Clone)]
+pub enum HpKey {
+    /// An AES encryption context.
+    /// Note: as we need to clone this object, we clone the pointer and
+    /// track references using `Rc`.  `PK11Context` can't be used with `PK11_CloneContext`
+    /// as that is not supported for these contexts.
+    Aes(Rc<RefCell<Context>>),
+    /// The ChaCha20 mask has to invoke a new PK11_Encrypt every time as it needs to
+    /// change the counter and nonce on each invocation.
+    Chacha(SymKey),
+}
+
+impl Debug for HpKey {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "HpKey")
+    }
+}
+
+impl HpKey {
+    const SAMPLE_SIZE: usize = 16;
+
+    /// QUIC-specific API for extracting a header-protection key.
+    ///
+    /// # Errors
+    /// Errors if HKDF fails or if the label is too long to fit in a `c_uint`.
+    /// # Panics
+    /// When `cipher` is not known to this code.
+    #[allow(clippy::cast_sign_loss)] // Cast for PK11_GetBlockSize is safe.
+    pub fn extract(version: Version, cipher: Cipher, prk: &SymKey, label: &str) -> Res<Self> {
+        const ZERO: &[u8] = &[0; 12];
+
+        let l = label.as_bytes();
+        let mut secret: *mut PK11SymKey = null_mut();
+
+        let (mech, key_size) = match cipher {
+            TLS_AES_128_GCM_SHA256 => (CK_MECHANISM_TYPE::from(CKM_AES_ECB), 16),
+            TLS_AES_256_GCM_SHA384 => (CK_MECHANISM_TYPE::from(CKM_AES_ECB), 32),
+            TLS_CHACHA20_POLY1305_SHA256 => (CK_MECHANISM_TYPE::from(CKM_CHACHA20), 32),
+            _ => unreachable!(),
+        };
+
+        // Note that this doesn't allow for passing null() for the handshake hash.
+        // A zero-length slice produces an identical result.
+        unsafe {
+            SSL_HkdfExpandLabelWithMech(
+                version,
+                cipher,
+                **prk,
+                null(),
+                0,
+                l.as_ptr().cast(),
+                c_uint::try_from(l.len())?,
+                mech,
+                key_size,
+                &mut secret,
+            )
+        }?;
+        let key = SymKey::from_ptr(secret).or(Err(Error::HkdfError))?;
+
+        let res = match cipher {
+            TLS_AES_128_GCM_SHA256 | TLS_AES_256_GCM_SHA384 => {
+                let context_ptr = unsafe {
+                    PK11_CreateContextBySymKey(
+                        mech,
+                        CK_ATTRIBUTE_TYPE::from(CKA_ENCRYPT),
+                        *key,
+                        &Item::wrap(&ZERO[..0]), // Borrow a zero-length slice of ZERO.
+                    )
+                };
+                let context = Context::from_ptr(context_ptr).or(Err(Error::CipherInitFailure))?;
+                Self::Aes(Rc::new(RefCell::new(context)))
+            }
+            TLS_CHACHA20_POLY1305_SHA256 => Self::Chacha(key),
+            _ => unreachable!(),
+        };
+
+        debug_assert_eq!(
+            res.block_size(),
+            usize::try_from(unsafe { PK11_GetBlockSize(mech, null_mut()) }).unwrap()
+        );
+        Ok(res)
+    }
+
+    /// Get the sample size, which is also the output size.
+    #[must_use]
+    #[allow(clippy::unused_self)] // To maintain an API contract.
+    pub fn sample_size(&self) -> usize {
+        Self::SAMPLE_SIZE
+    }
+
+    fn block_size(&self) -> usize {
+        match self {
+            Self::Aes(_) => 16,
+            Self::Chacha(_) => 64,
+        }
+    }
+
+    /// Generate a header protection mask for QUIC.
+    ///
+    /// # Errors
+    /// An error is returned if the NSS functions fail; a sample of the
+    /// wrong size is the obvious cause.
+    /// # Panics
+    /// When the mechanism for our key is not supported.
+    pub fn mask(&self, sample: &[u8]) -> Res<Vec<u8>> {
+        let mut output = vec![0_u8; self.block_size()];
+
+        match self {
+            Self::Aes(context) => {
+                let mut output_len: c_int = 0;
+                secstatus_to_res(unsafe {
+                    PK11_CipherOp(
+                        **context.borrow_mut(),
+                        output.as_mut_ptr(),
+                        &mut output_len,
+                        c_int::try_from(output.len())?,
+                        sample[..Self::SAMPLE_SIZE].as_ptr().cast(),
+                        c_int::try_from(Self::SAMPLE_SIZE).unwrap(),
+                    )
+                })?;
+                assert_eq!(usize::try_from(output_len).unwrap(), output.len());
+                Ok(output)
+            }
+
+            Self::Chacha(key) => {
+                let params: CK_CHACHA20_PARAMS = CK_CHACHA20_PARAMS {
+                    pBlockCounter: sample.as_ptr() as *mut u8,
+                    blockCounterBits: 32,
+                    pNonce: sample[4..Self::SAMPLE_SIZE].as_ptr() as *mut _,
+                    ulNonceBits: 96,
+                };
+                let mut output_len: c_uint = 0;
+                let mut param_item = Item::wrap_struct(&params);
+                secstatus_to_res(unsafe {
+                    PK11_Encrypt(
+                        **key,
+                        CK_MECHANISM_TYPE::from(CKM_CHACHA20),
+                        addr_of_mut!(param_item),
+                        output[..].as_mut_ptr(),
+                        &mut output_len,
+                        c_uint::try_from(output.len())?,
+                        output[..].as_ptr(),
+                        c_uint::try_from(output.len())?,
+                    )
+                })?;
+                assert_eq!(usize::try_from(output_len).unwrap(), output.len());
+                Ok(output)
+            }
+        }
+    }
+}