Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

8 files changed, 1211 insertions, 0 deletions

diff --git a/third_party/rust/neqo-crypto/tests/aead.rs b/third_party/rust/neqo-crypto/tests/aead.rs
new file mode 100644
index 0000000000..0fef623ae6
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/aead.rs
@@ -0,0 +1,116 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+#![cfg(not(feature = "fuzzing"))]
+
+use neqo_crypto::constants::{Cipher, TLS_AES_128_GCM_SHA256, TLS_VERSION_1_3};
+use neqo_crypto::hkdf;
+use neqo_crypto::Aead;
+use test_fixture::fixture_init;
+
+const AAD: &[u8] = &[
+    0xc1, 0xff, 0x00, 0x00, 0x12, 0x05, 0xf0, 0x67, 0xa5, 0x50, 0x2a, 0x42, 0x62, 0xb5, 0x00, 0x40,
+    0x74, 0x00, 0x01,
+];
+const PLAINTEXT: &[u8] = &[
+    0x0d, 0x00, 0x00, 0x00, 0x00, 0x18, 0x41, 0x0a, 0x02, 0x00, 0x00, 0x56, 0x03, 0x03, 0xee, 0xfc,
+    0xe7, 0xf7, 0xb3, 0x7b, 0xa1, 0xd1, 0x63, 0x2e, 0x96, 0x67, 0x78, 0x25, 0xdd, 0xf7, 0x39, 0x88,
+    0xcf, 0xc7, 0x98, 0x25, 0xdf, 0x56, 0x6d, 0xc5, 0x43, 0x0b, 0x9a, 0x04, 0x5a, 0x12, 0x00, 0x13,
+    0x01, 0x00, 0x00, 0x2e, 0x00, 0x33, 0x00, 0x24, 0x00, 0x1d, 0x00, 0x20, 0x9d, 0x3c, 0x94, 0x0d,
+    0x89, 0x69, 0x0b, 0x84, 0xd0, 0x8a, 0x60, 0x99, 0x3c, 0x14, 0x4e, 0xca, 0x68, 0x4d, 0x10, 0x81,
+    0x28, 0x7c, 0x83, 0x4d, 0x53, 0x11, 0xbc, 0xf3, 0x2b, 0xb9, 0xda, 0x1a, 0x00, 0x2b, 0x00, 0x02,
+    0x03, 0x04,
+];
+
+fn make_aead(cipher: Cipher) -> Aead {
+    fixture_init();
+
+    let secret = hkdf::import_key(
+        TLS_VERSION_1_3,
+        &[
+            0x47, 0xb2, 0xea, 0xea, 0x6c, 0x26, 0x6e, 0x32, 0xc0, 0x69, 0x7a, 0x9e, 0x2a, 0x89,
+            0x8b, 0xdf, 0x5c, 0x4f, 0xb3, 0xe5, 0xac, 0x34, 0xf0, 0xe5, 0x49, 0xbf, 0x2c, 0x58,
+            0x58, 0x1a, 0x38, 0x11,
+        ],
+    )
+    .expect("make a secret");
+    Aead::new(
+        TLS_VERSION_1_3,
+        cipher,
+        &secret,
+        "quic ", // QUICv1 label prefix; note the trailing space here.
+    )
+    .expect("can make an AEAD")
+}
+
+#[test]
+fn aead_encrypt_decrypt() {
+    const TOGGLE: u8 = 77;
+    let aead = make_aead(TLS_AES_128_GCM_SHA256);
+    let ciphertext_buf = &mut [0; 1024]; // Can't use PLAINTEXT.len() here.
+    let ciphertext = aead
+        .encrypt(1, AAD, PLAINTEXT, ciphertext_buf)
+        .expect("encrypt should work");
+    let expected_ciphertext: &[u8] = &[
+        0x5f, 0x01, 0xc4, 0xc2, 0xa2, 0x30, 0x3d, 0x29, 0x7e, 0x3c, 0x51, 0x9b, 0xf6, 0xb2, 0x23,
+        0x86, 0xe3, 0xd0, 0xbd, 0x6d, 0xfc, 0x66, 0x12, 0x16, 0x77, 0x29, 0x80, 0x31, 0x04, 0x1b,
+        0xb9, 0xa7, 0x9c, 0x9f, 0x0f, 0x9d, 0x4c, 0x58, 0x77, 0x27, 0x0a, 0x66, 0x0f, 0x5d, 0xa3,
+        0x62, 0x07, 0xd9, 0x8b, 0x73, 0x83, 0x9b, 0x2f, 0xdf, 0x2e, 0xf8, 0xe7, 0xdf, 0x5a, 0x51,
+        0xb1, 0x7b, 0x8c, 0x68, 0xd8, 0x64, 0xfd, 0x3e, 0x70, 0x8c, 0x6c, 0x1b, 0x71, 0xa9, 0x8a,
+        0x33, 0x18, 0x15, 0x59, 0x9e, 0xf5, 0x01, 0x4e, 0xa3, 0x8c, 0x44, 0xbd, 0xfd, 0x38, 0x7c,
+        0x03, 0xb5, 0x27, 0x5c, 0x35, 0xe0, 0x09, 0xb6, 0x23, 0x8f, 0x83, 0x14, 0x20, 0x04, 0x7c,
+        0x72, 0x71, 0x28, 0x1c, 0xcb, 0x54, 0xdf, 0x78, 0x84,
+    ];
+    assert_eq!(ciphertext, expected_ciphertext);
+
+    let plaintext_buf = &mut [0; 1024]; // Can't use PLAINTEXT.len() here.
+    let plaintext = aead
+        .decrypt(1, AAD, ciphertext, plaintext_buf)
+        .expect("decrypt should also work");
+    assert_eq!(plaintext, PLAINTEXT);
+
+    // Decryption failures...
+    // Different counter.
+    let res = aead.decrypt(2, AAD, ciphertext, plaintext_buf);
+    assert!(res.is_err());
+
+    // Front-truncate ciphertext.
+    let res = aead.decrypt(1, AAD, &ciphertext[1..], plaintext_buf);
+    assert!(res.is_err());
+
+    // End-truncate ciphertext.
+    let ciphertext_last = ciphertext.len() - 1;
+    let res = aead.decrypt(1, AAD, &ciphertext[..ciphertext_last], plaintext_buf);
+    assert!(res.is_err());
+
+    // Mess with the buffer.
+    let mut scratch = Vec::new();
+    scratch.extend_from_slice(ciphertext);
+
+    // Toggle first octet.
+    scratch[0] ^= TOGGLE;
+    let res = aead.decrypt(1, AAD, &scratch[..], plaintext_buf);
+    assert!(res.is_err());
+
+    // Toggle the auth tag.
+    scratch[0] ^= TOGGLE;
+    scratch[ciphertext_last] ^= TOGGLE;
+    let res = aead.decrypt(1, AAD, &scratch[..], plaintext_buf);
+    assert!(res.is_err());
+
+    // Mess with the AAD.
+    scratch.clear();
+    scratch.extend_from_slice(AAD);
+
+    // Front-truncate.
+    let res = aead.decrypt(1, &scratch[1..], ciphertext, plaintext_buf);
+    assert!(res.is_err());
+
+    // End-truncate.
+    let aad_last = AAD.len() - 1;
+    let res = aead.decrypt(1, &scratch[..aad_last], ciphertext, plaintext_buf);
+    assert!(res.is_err());
+
+    scratch[0] ^= TOGGLE;
+    let res = aead.decrypt(1, &scratch[..], ciphertext, plaintext_buf);
+    assert!(res.is_err());
+}
diff --git a/third_party/rust/neqo-crypto/tests/agent.rs b/third_party/rust/neqo-crypto/tests/agent.rs
new file mode 100644
index 0000000000..1a8ec449e4
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/agent.rs
@@ -0,0 +1,474 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+
+use neqo_crypto::{
+    generate_ech_keys, AuthenticationStatus, Client, Error, HandshakeState, SecretAgentPreInfo,
+    Server, ZeroRttCheckResult, ZeroRttChecker, TLS_AES_128_GCM_SHA256,
+    TLS_CHACHA20_POLY1305_SHA256, TLS_GRP_EC_SECP256R1, TLS_VERSION_1_3,
+};
+
+use std::boxed::Box;
+
+mod handshake;
+use crate::handshake::{
+    connect, connect_fail, forward_records, resumption_setup, PermissiveZeroRttChecker, Resumption,
+    ZERO_RTT_TOKEN_DATA,
+};
+use test_fixture::{fixture_init, now};
+
+#[test]
+fn make_client() {
+    fixture_init();
+    let _c = Client::new("server").expect("should create client");
+}
+
+#[test]
+fn make_server() {
+    fixture_init();
+    let _s = Server::new(&["key"]).expect("should create server");
+}
+
+#[test]
+fn basic() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    println!("client {:p}", &client);
+    let mut server = Server::new(&["key"]).expect("should create server");
+    println!("server {:p}", &server);
+
+    let bytes = client.handshake(now(), &[]).expect("send CH");
+    assert!(!bytes.is_empty());
+    assert_eq!(*client.state(), HandshakeState::InProgress);
+
+    let bytes = server
+        .handshake(now(), &bytes[..])
+        .expect("read CH, send SH");
+    assert!(!bytes.is_empty());
+    assert_eq!(*server.state(), HandshakeState::InProgress);
+
+    let bytes = client.handshake(now(), &bytes[..]).expect("send CF");
+    assert!(bytes.is_empty());
+    assert_eq!(*client.state(), HandshakeState::AuthenticationPending);
+
+    client.authenticated(AuthenticationStatus::Ok);
+    assert_eq!(*client.state(), HandshakeState::Authenticated(0));
+
+    // Calling handshake() again indicates that we're happy with the cert.
+    let bytes = client.handshake(now(), &[]).expect("send CF");
+    assert!(!bytes.is_empty());
+    assert!(client.state().is_connected());
+
+    let client_info = client.info().expect("got info");
+    assert_eq!(TLS_VERSION_1_3, client_info.version());
+    assert_eq!(TLS_AES_128_GCM_SHA256, client_info.cipher_suite());
+
+    let bytes = server.handshake(now(), &bytes[..]).expect("finish");
+    assert!(bytes.is_empty());
+    assert!(server.state().is_connected());
+
+    let server_info = server.info().expect("got info");
+    assert_eq!(TLS_VERSION_1_3, server_info.version());
+    assert_eq!(TLS_AES_128_GCM_SHA256, server_info.cipher_suite());
+}
+
+fn check_client_preinfo(client_preinfo: &SecretAgentPreInfo) {
+    assert_eq!(client_preinfo.version(), None);
+    assert_eq!(client_preinfo.cipher_suite(), None);
+    assert!(!client_preinfo.early_data());
+    assert_eq!(client_preinfo.early_data_cipher(), None);
+    assert_eq!(client_preinfo.max_early_data(), 0);
+    assert_eq!(client_preinfo.alpn(), None);
+}
+
+fn check_server_preinfo(server_preinfo: &SecretAgentPreInfo) {
+    assert_eq!(server_preinfo.version(), Some(TLS_VERSION_1_3));
+    assert_eq!(server_preinfo.cipher_suite(), Some(TLS_AES_128_GCM_SHA256));
+    assert!(!server_preinfo.early_data());
+    assert_eq!(server_preinfo.early_data_cipher(), None);
+    assert_eq!(server_preinfo.max_early_data(), 0);
+    assert_eq!(server_preinfo.alpn(), None);
+}
+
+#[test]
+fn raw() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    println!("client {:?}", client);
+    let mut server = Server::new(&["key"]).expect("should create server");
+    println!("server {:?}", server);
+
+    let client_records = client.handshake_raw(now(), None).expect("send CH");
+    assert!(!client_records.is_empty());
+    assert_eq!(*client.state(), HandshakeState::InProgress);
+
+    check_client_preinfo(&client.preinfo().expect("get preinfo"));
+
+    let server_records =
+        forward_records(now(), &mut server, client_records).expect("read CH, send SH");
+    assert!(!server_records.is_empty());
+    assert_eq!(*server.state(), HandshakeState::InProgress);
+
+    check_server_preinfo(&server.preinfo().expect("get preinfo"));
+
+    let client_records = forward_records(now(), &mut client, server_records).expect("send CF");
+    assert!(client_records.is_empty());
+    assert_eq!(*client.state(), HandshakeState::AuthenticationPending);
+
+    client.authenticated(AuthenticationStatus::Ok);
+    assert_eq!(*client.state(), HandshakeState::Authenticated(0));
+
+    // Calling handshake() again indicates that we're happy with the cert.
+    let client_records = client.handshake_raw(now(), None).expect("send CF");
+    assert!(!client_records.is_empty());
+    assert!(client.state().is_connected());
+
+    let server_records = forward_records(now(), &mut server, client_records).expect("finish");
+    assert!(server_records.is_empty());
+    assert!(server.state().is_connected());
+
+    // The client should have one certificate for the server.
+    let mut certs = client.peer_certificate().unwrap();
+    assert_eq!(1, certs.count());
+
+    // The server shouldn't have a client certificate.
+    assert!(server.peer_certificate().is_none());
+}
+
+#[test]
+fn chacha_client() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    client
+        .set_ciphers(&[TLS_CHACHA20_POLY1305_SHA256])
+        .expect("ciphers set");
+
+    connect(&mut client, &mut server);
+
+    assert_eq!(
+        client.info().unwrap().cipher_suite(),
+        TLS_CHACHA20_POLY1305_SHA256
+    );
+    assert_eq!(
+        server.info().unwrap().cipher_suite(),
+        TLS_CHACHA20_POLY1305_SHA256
+    );
+}
+
+#[test]
+fn p256_server() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server
+        .set_groups(&[TLS_GRP_EC_SECP256R1])
+        .expect("groups set");
+
+    connect(&mut client, &mut server);
+
+    assert_eq!(client.info().unwrap().key_exchange(), TLS_GRP_EC_SECP256R1);
+    assert_eq!(server.info().unwrap().key_exchange(), TLS_GRP_EC_SECP256R1);
+}
+
+#[test]
+fn alpn() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    client.set_alpn(&["alpn"]).expect("should set ALPN");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server.set_alpn(&["alpn"]).expect("should set ALPN");
+
+    connect(&mut client, &mut server);
+
+    let expected = Some(String::from("alpn"));
+    assert_eq!(expected.as_ref(), client.info().unwrap().alpn());
+    assert_eq!(expected.as_ref(), server.info().unwrap().alpn());
+}
+
+#[test]
+fn alpn_multi() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    client
+        .set_alpn(&["dummy", "alpn"])
+        .expect("should set ALPN");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server
+        .set_alpn(&["alpn", "other"])
+        .expect("should set ALPN");
+
+    connect(&mut client, &mut server);
+
+    let expected = Some(String::from("alpn"));
+    assert_eq!(expected.as_ref(), client.info().unwrap().alpn());
+    assert_eq!(expected.as_ref(), server.info().unwrap().alpn());
+}
+
+#[test]
+fn alpn_server_pref() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    client
+        .set_alpn(&["dummy", "alpn"])
+        .expect("should set ALPN");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server
+        .set_alpn(&["alpn", "dummy"])
+        .expect("should set ALPN");
+
+    connect(&mut client, &mut server);
+
+    let expected = Some(String::from("alpn"));
+    assert_eq!(expected.as_ref(), client.info().unwrap().alpn());
+    assert_eq!(expected.as_ref(), server.info().unwrap().alpn());
+}
+
+#[test]
+fn alpn_no_protocol() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    client.set_alpn(&["a"]).expect("should set ALPN");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server.set_alpn(&["b"]).expect("should set ALPN");
+
+    connect_fail(&mut client, &mut server);
+
+    // TODO(mt) check the error code
+}
+
+#[test]
+fn alpn_client_only() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    client.set_alpn(&["alpn"]).expect("should set ALPN");
+    let mut server = Server::new(&["key"]).expect("should create server");
+
+    connect(&mut client, &mut server);
+
+    assert_eq!(None, client.info().unwrap().alpn());
+    assert_eq!(None, server.info().unwrap().alpn());
+}
+
+#[test]
+fn alpn_server_only() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    server.set_alpn(&["alpn"]).expect("should set ALPN");
+
+    connect(&mut client, &mut server);
+
+    assert_eq!(None, client.info().unwrap().alpn());
+    assert_eq!(None, server.info().unwrap().alpn());
+}
+
+#[test]
+fn resume() {
+    let (_, token) = resumption_setup(Resumption::WithoutZeroRtt);
+
+    let mut client = Client::new("server.example").expect("should create second client");
+    let mut server = Server::new(&["key"]).expect("should create second server");
+
+    client
+        .enable_resumption(token)
+        .expect("should accept token");
+    connect(&mut client, &mut server);
+
+    assert!(client.info().unwrap().resumed());
+    assert!(server.info().unwrap().resumed());
+}
+
+#[test]
+fn zero_rtt() {
+    let (anti_replay, token) = resumption_setup(Resumption::WithZeroRtt);
+
+    // Finally, 0-RTT should succeed.
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    client
+        .enable_resumption(token)
+        .expect("should accept token");
+    client.enable_0rtt().expect("should enable 0-RTT");
+    server
+        .enable_0rtt(
+            anti_replay.as_ref().unwrap(),
+            0xffff_ffff,
+            Box::<PermissiveZeroRttChecker>::default(),
+        )
+        .expect("should enable 0-RTT");
+
+    connect(&mut client, &mut server);
+    assert!(client.info().unwrap().early_data_accepted());
+    assert!(server.info().unwrap().early_data_accepted());
+}
+
+#[test]
+fn zero_rtt_no_eoed() {
+    let (anti_replay, token) = resumption_setup(Resumption::WithZeroRtt);
+
+    // Finally, 0-RTT should succeed.
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    client
+        .enable_resumption(token)
+        .expect("should accept token");
+    client.enable_0rtt().expect("should enable 0-RTT");
+    client
+        .disable_end_of_early_data()
+        .expect("should disable EOED");
+    server
+        .enable_0rtt(
+            anti_replay.as_ref().unwrap(),
+            0xffff_ffff,
+            Box::<PermissiveZeroRttChecker>::default(),
+        )
+        .expect("should enable 0-RTT");
+    server
+        .disable_end_of_early_data()
+        .expect("should disable EOED");
+
+    connect(&mut client, &mut server);
+    assert!(client.info().unwrap().early_data_accepted());
+    assert!(server.info().unwrap().early_data_accepted());
+}
+
+#[derive(Debug)]
+struct RejectZeroRtt {}
+impl ZeroRttChecker for RejectZeroRtt {
+    fn check(&self, token: &[u8]) -> ZeroRttCheckResult {
+        assert_eq!(ZERO_RTT_TOKEN_DATA, token);
+        ZeroRttCheckResult::Reject
+    }
+}
+
+#[test]
+fn reject_zero_rtt() {
+    let (anti_replay, token) = resumption_setup(Resumption::WithZeroRtt);
+
+    // Finally, 0-RTT should succeed.
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    client
+        .enable_resumption(token)
+        .expect("should accept token");
+    client.enable_0rtt().expect("should enable 0-RTT");
+    server
+        .enable_0rtt(
+            anti_replay.as_ref().unwrap(),
+            0xffff_ffff,
+            Box::new(RejectZeroRtt {}),
+        )
+        .expect("should enable 0-RTT");
+
+    connect(&mut client, &mut server);
+    assert!(!client.info().unwrap().early_data_accepted());
+    assert!(!server.info().unwrap().early_data_accepted());
+}
+
+#[test]
+fn close() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    connect(&mut client, &mut server);
+    client.close();
+    server.close();
+}
+
+#[test]
+fn close_client_twice() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    connect(&mut client, &mut server);
+    client.close();
+    client.close(); // Should be a noop.
+}
+
+#[test]
+fn ech() {
+    fixture_init();
+    let mut server = Server::new(&["key"]).expect("should create server");
+    let (sk, pk) = generate_ech_keys().expect("ECH keys");
+    server
+        .enable_ech(88, "public.example", &sk, &pk)
+        .expect("should enable server ECH");
+
+    let mut client = Client::new("server.example").expect("should create client");
+    client
+        .enable_ech(server.ech_config())
+        .expect("should enable client ECH");
+
+    connect(&mut client, &mut server);
+    assert!(client.info().unwrap().ech_accepted());
+    assert!(server.info().unwrap().ech_accepted());
+    assert!(client.preinfo().unwrap().ech_accepted().unwrap());
+    assert!(server.preinfo().unwrap().ech_accepted().unwrap());
+}
+
+#[test]
+fn ech_retry() {
+    const PUBLIC_NAME: &str = "public.example";
+    const PRIVATE_NAME: &str = "private.example";
+    const CONFIG_ID: u8 = 7;
+
+    fixture_init();
+    let mut server = Server::new(&["key"]).unwrap();
+    let (sk, pk) = generate_ech_keys().unwrap();
+    server.enable_ech(CONFIG_ID, PUBLIC_NAME, &sk, &pk).unwrap();
+
+    let mut client = Client::new(PRIVATE_NAME).unwrap();
+    let mut cfg = Vec::from(server.ech_config());
+    // Ensure that the version and config_id is correct.
+    assert_eq!(cfg[2], 0xfe);
+    assert_eq!(cfg[3], 0x0d);
+    assert_eq!(cfg[6], CONFIG_ID);
+    // Change the config_id so that the server doesn't recognize this.
+    cfg[6] ^= 0x94;
+    client.enable_ech(&cfg).unwrap();
+
+    // Long version of connect() so that we can check the state.
+    let records = client.handshake_raw(now(), None).unwrap(); // ClientHello
+    let records = forward_records(now(), &mut server, records).unwrap(); // ServerHello...
+    let records = forward_records(now(), &mut client, records).unwrap(); // (empty)
+    assert!(records.is_empty());
+
+    // The client should now be expecting authentication.
+    assert_eq!(
+        *client.state(),
+        HandshakeState::EchFallbackAuthenticationPending(String::from(PUBLIC_NAME))
+    );
+    client.authenticated(AuthenticationStatus::Ok);
+    let updated_config = if let Err(Error::EchRetry(c)) = client.handshake_raw(now(), None) {
+        c
+    } else {
+        panic!(
+            "Handshake should fail with EchRetry, state is instead {:?}",
+            client.state()
+        );
+    };
+    assert_eq!(
+        client
+            .preinfo()
+            .unwrap()
+            .ech_public_name()
+            .unwrap()
+            .unwrap(),
+        PUBLIC_NAME
+    );
+    // We don't forward alerts, so we can't tell the server about them.
+    // An ech_required alert should be set though.
+    assert_eq!(client.alert(), Some(&121));
+
+    let mut server = Server::new(&["key"]).unwrap();
+    server.enable_ech(CONFIG_ID, PUBLIC_NAME, &sk, &pk).unwrap();
+    let mut client = Client::new(PRIVATE_NAME).unwrap();
+    client.enable_ech(&updated_config).unwrap();
+
+    connect(&mut client, &mut server);
+
+    assert!(client.info().unwrap().ech_accepted());
+    assert!(server.info().unwrap().ech_accepted());
+    assert!(client.preinfo().unwrap().ech_accepted().unwrap());
+    assert!(server.preinfo().unwrap().ech_accepted().unwrap());
+}
diff --git a/third_party/rust/neqo-crypto/tests/ext.rs b/third_party/rust/neqo-crypto/tests/ext.rs
new file mode 100644
index 0000000000..b814c190a4
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/ext.rs
@@ -0,0 +1,97 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+
+use neqo_crypto::constants::{HandshakeMessage, TLS_HS_CLIENT_HELLO, TLS_HS_ENCRYPTED_EXTENSIONS};
+use neqo_crypto::ext::{ExtensionHandler, ExtensionHandlerResult, ExtensionWriterResult};
+use neqo_crypto::{Client, Server};
+use std::cell::RefCell;
+use std::rc::Rc;
+use test_fixture::fixture_init;
+
+mod handshake;
+use crate::handshake::connect;
+
+struct NoopExtensionHandler;
+impl ExtensionHandler for NoopExtensionHandler {}
+
+// This test just handshakes.  It doesn't really do anything about capturing the
+#[test]
+fn noop_extension_handler() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+
+    client
+        .extension_handler(0xffff, Rc::new(RefCell::new(NoopExtensionHandler)))
+        .expect("installed");
+    server
+        .extension_handler(0xffff, Rc::new(RefCell::new(NoopExtensionHandler)))
+        .expect("installed");
+
+    connect(&mut client, &mut server);
+}
+
+#[derive(Debug, Default)]
+struct SimpleExtensionHandler {
+    written: bool,
+    handled: bool,
+}
+
+impl SimpleExtensionHandler {
+    #[allow(dead_code)]
+    pub fn negotiated(&self) -> bool {
+        self.written && self.handled
+    }
+}
+
+impl ExtensionHandler for SimpleExtensionHandler {
+    fn write(&mut self, msg: HandshakeMessage, d: &mut [u8]) -> ExtensionWriterResult {
+        match msg {
+            TLS_HS_CLIENT_HELLO | TLS_HS_ENCRYPTED_EXTENSIONS => {
+                self.written = true;
+                d[0] = 77;
+                ExtensionWriterResult::Write(1)
+            }
+            _ => ExtensionWriterResult::Skip,
+        }
+    }
+
+    fn handle(&mut self, msg: HandshakeMessage, d: &[u8]) -> ExtensionHandlerResult {
+        match msg {
+            TLS_HS_CLIENT_HELLO | TLS_HS_ENCRYPTED_EXTENSIONS => {
+                self.handled = true;
+                if d.len() != 1 {
+                    ExtensionHandlerResult::Alert(50) // decode_error
+                } else if d[0] == 77 {
+                    ExtensionHandlerResult::Ok
+                } else {
+                    ExtensionHandlerResult::Alert(47) // illegal_parameter
+                }
+            }
+            _ => ExtensionHandlerResult::Alert(110), // unsupported_extension
+        }
+    }
+}
+
+#[test]
+fn simple_extension() {
+    fixture_init();
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+
+    let client_handler = Rc::new(RefCell::new(SimpleExtensionHandler::default()));
+    let ch = Rc::clone(&client_handler);
+    client
+        .extension_handler(0xffff, ch)
+        .expect("client handler installed");
+    let server_handler = Rc::new(RefCell::new(SimpleExtensionHandler::default()));
+    let sh = Rc::clone(&server_handler);
+    server
+        .extension_handler(0xffff, sh)
+        .expect("server handler installed");
+
+    connect(&mut client, &mut server);
+
+    assert!(client_handler.borrow().negotiated());
+    assert!(server_handler.borrow().negotiated());
+}
diff --git a/third_party/rust/neqo-crypto/tests/handshake.rs b/third_party/rust/neqo-crypto/tests/handshake.rs
new file mode 100644
index 0000000000..48b6ba2823
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/handshake.rs
@@ -0,0 +1,157 @@
+#![allow(dead_code)]
+
+use neqo_common::qinfo;
+use neqo_crypto::{
+    AntiReplay, AuthenticationStatus, Client, HandshakeState, RecordList, Res, ResumptionToken,
+    SecretAgent, Server, ZeroRttCheckResult, ZeroRttChecker,
+};
+use std::mem;
+use std::time::Instant;
+use test_fixture::{anti_replay, fixture_init, now};
+
+/// Consume records until the handshake state changes.
+pub fn forward_records(
+    now: Instant,
+    agent: &mut SecretAgent,
+    records_in: RecordList,
+) -> Res<RecordList> {
+    let mut expected_state = match agent.state() {
+        HandshakeState::New => HandshakeState::New,
+        _ => HandshakeState::InProgress,
+    };
+    let mut records_out = RecordList::default();
+    for record in records_in {
+        assert_eq!(records_out.len(), 0);
+        assert_eq!(*agent.state(), expected_state);
+
+        records_out = agent.handshake_raw(now, Some(record))?;
+        expected_state = HandshakeState::InProgress;
+    }
+    Ok(records_out)
+}
+
+fn handshake(now: Instant, client: &mut SecretAgent, server: &mut SecretAgent) {
+    let mut a = client;
+    let mut b = server;
+    let mut records = a.handshake_raw(now, None).unwrap();
+    let is_done = |agent: &mut SecretAgent| agent.state().is_final();
+    while !is_done(b) {
+        records = if let Ok(r) = forward_records(now, b, records) {
+            r
+        } else {
+            // TODO(mt) take the alert generated by the failed handshake
+            // and allow it to be sent to the peer.
+            return;
+        };
+
+        if *b.state() == HandshakeState::AuthenticationPending {
+            b.authenticated(AuthenticationStatus::Ok);
+            records = if let Ok(r) = b.handshake_raw(now, None) {
+                r
+            } else {
+                // TODO(mt) - as above.
+                return;
+            }
+        }
+        mem::swap(&mut a, &mut b);
+    }
+}
+
+pub fn connect_at(now: Instant, client: &mut SecretAgent, server: &mut SecretAgent) {
+    handshake(now, client, server);
+    qinfo!("client: {:?}", client.state());
+    qinfo!("server: {:?}", server.state());
+    assert!(client.state().is_connected());
+    assert!(server.state().is_connected());
+}
+
+pub fn connect(client: &mut SecretAgent, server: &mut SecretAgent) {
+    connect_at(now(), client, server);
+}
+
+pub fn connect_fail(client: &mut SecretAgent, server: &mut SecretAgent) {
+    handshake(now(), client, server);
+    assert!(!client.state().is_connected());
+    assert!(!server.state().is_connected());
+}
+
+#[derive(Clone, Copy, Debug)]
+pub enum Resumption {
+    WithoutZeroRtt,
+    WithZeroRtt,
+}
+
+pub const ZERO_RTT_TOKEN_DATA: &[u8] = b"zero-rtt-token";
+
+#[derive(Debug)]
+pub struct PermissiveZeroRttChecker {
+    resuming: bool,
+}
+
+impl Default for PermissiveZeroRttChecker {
+    fn default() -> Self {
+        Self { resuming: true }
+    }
+}
+
+impl ZeroRttChecker for PermissiveZeroRttChecker {
+    fn check(&self, token: &[u8]) -> ZeroRttCheckResult {
+        if self.resuming {
+            assert_eq!(ZERO_RTT_TOKEN_DATA, token);
+        } else {
+            assert!(token.is_empty());
+        }
+        ZeroRttCheckResult::Accept
+    }
+}
+
+fn zero_rtt_setup(
+    mode: Resumption,
+    client: &mut Client,
+    server: &mut Server,
+) -> Option<AntiReplay> {
+    if let Resumption::WithZeroRtt = mode {
+        client.enable_0rtt().expect("should enable 0-RTT on client");
+
+        let anti_replay = anti_replay();
+        server
+            .enable_0rtt(
+                &anti_replay,
+                0xffff_ffff,
+                Box::new(PermissiveZeroRttChecker { resuming: false }),
+            )
+            .expect("should enable 0-RTT on server");
+        Some(anti_replay)
+    } else {
+        None
+    }
+}
+
+pub fn resumption_setup(mode: Resumption) -> (Option<AntiReplay>, ResumptionToken) {
+    fixture_init();
+
+    let mut client = Client::new("server.example").expect("should create client");
+    let mut server = Server::new(&["key"]).expect("should create server");
+    let anti_replay = zero_rtt_setup(mode, &mut client, &mut server);
+
+    connect(&mut client, &mut server);
+
+    assert!(!client.info().unwrap().resumed());
+    assert!(!server.info().unwrap().resumed());
+    assert!(!client.info().unwrap().early_data_accepted());
+    assert!(!server.info().unwrap().early_data_accepted());
+
+    let server_records = server
+        .send_ticket(now(), ZERO_RTT_TOKEN_DATA)
+        .expect("ticket sent");
+    assert_eq!(server_records.len(), 1);
+    let client_records = client
+        .handshake_raw(now(), server_records.into_iter().next())
+        .expect("records ingested");
+    assert_eq!(client_records.len(), 0);
+
+    // `client` is about to go out of scope,
+    // but we only need to keep the resumption token, so clone it.
+    let token = client.resumption_token().expect("token is present");
+    (anti_replay, token)
+}
diff --git a/third_party/rust/neqo-crypto/tests/hkdf.rs b/third_party/rust/neqo-crypto/tests/hkdf.rs
new file mode 100644
index 0000000000..10a66f10b7
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/hkdf.rs
@@ -0,0 +1,153 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+
+use neqo_crypto::constants::{
+    Cipher, TLS_AES_128_GCM_SHA256, TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256,
+    TLS_VERSION_1_3,
+};
+use neqo_crypto::{hkdf, SymKey};
+use test_fixture::fixture_init;
+
+const SALT: &[u8] = &[
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+];
+
+const IKM: &[u8] = &[
+    0x01, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+];
+
+const SESSION_HASH: &[u8] = &[
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
+    0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+    0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+    0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+];
+
+fn cipher_hash_len(cipher: Cipher) -> usize {
+    match cipher {
+        TLS_AES_128_GCM_SHA256 | TLS_CHACHA20_POLY1305_SHA256 => 32,
+        TLS_AES_256_GCM_SHA384 => 48,
+        _ => unreachable!(),
+    }
+}
+
+fn import_keys(cipher: Cipher) -> (SymKey, SymKey) {
+    let l = cipher_hash_len(cipher);
+    (
+        hkdf::import_key(TLS_VERSION_1_3, &SALT[0..l]).expect("import salt"),
+        hkdf::import_key(TLS_VERSION_1_3, &IKM[0..l]).expect("import IKM"),
+    )
+}
+
+fn extract(cipher: Cipher, expected: &[u8]) {
+    fixture_init();
+    let (salt, ikm) = import_keys(cipher);
+    let prk = hkdf::extract(TLS_VERSION_1_3, cipher, Some(&salt), &ikm)
+        .expect("HKDF Extract should work");
+    let raw_prk = prk.as_bytes().expect("key should have bytes");
+    assert_eq!(raw_prk, expected);
+}
+
+#[test]
+fn extract_sha256() {
+    const EXPECTED: &[u8] = &[
+        0xa5, 0x68, 0x02, 0x5a, 0x95, 0xc9, 0x7f, 0x55, 0x38, 0xbc, 0xf7, 0x97, 0xcc, 0x0f, 0xd5,
+        0xf6, 0xa8, 0x8d, 0x15, 0xbc, 0x0e, 0x85, 0x74, 0x70, 0x3c, 0xa3, 0x65, 0xbd, 0x76, 0xcf,
+        0x9f, 0xd3,
+    ];
+    extract(TLS_AES_128_GCM_SHA256, EXPECTED);
+    extract(TLS_CHACHA20_POLY1305_SHA256, EXPECTED);
+}
+
+#[test]
+fn extract_sha384() {
+    extract(
+        TLS_AES_256_GCM_SHA384,
+        &[
+            0x01, 0x93, 0xc0, 0x07, 0x3f, 0x6a, 0x83, 0x0e, 0x2e, 0x4f, 0xb2, 0x58, 0xe4, 0x00,
+            0x08, 0x5c, 0x68, 0x9c, 0x37, 0x32, 0x00, 0x37, 0xff, 0xc3, 0x1c, 0x5b, 0x98, 0x0b,
+            0x02, 0x92, 0x3f, 0xfd, 0x73, 0x5a, 0x6f, 0x2a, 0x95, 0xa3, 0xee, 0xf6, 0xd6, 0x8e,
+            0x6f, 0x86, 0xea, 0x63, 0xf8, 0x33,
+        ],
+    );
+}
+
+fn derive_secret(cipher: Cipher, expected: &[u8]) {
+    fixture_init();
+
+    // Here we only use the salt as the PRK.
+    let (prk, _) = import_keys(cipher);
+    let secret = hkdf::expand_label(TLS_VERSION_1_3, cipher, &prk, &[], "master secret")
+        .expect("HKDF-Expand-Label should work");
+    let raw_secret = secret.as_bytes().expect("key should have bytes");
+    assert_eq!(raw_secret, expected);
+}
+
+#[test]
+fn derive_secret_sha256() {
+    const EXPECTED: &[u8] = &[
+        0xb7, 0x08, 0x00, 0xe3, 0x8e, 0x48, 0x68, 0x91, 0xb1, 0x0f, 0x5e, 0x6f, 0x22, 0x53, 0x6b,
+        0x84, 0x69, 0x75, 0xaa, 0xa3, 0x2a, 0xe7, 0xde, 0xaa, 0xc3, 0xd1, 0xb4, 0x05, 0x22, 0x5c,
+        0x68, 0xf5,
+    ];
+    derive_secret(TLS_AES_128_GCM_SHA256, EXPECTED);
+    derive_secret(TLS_CHACHA20_POLY1305_SHA256, EXPECTED);
+}
+
+#[test]
+fn derive_secret_sha384() {
+    derive_secret(
+        TLS_AES_256_GCM_SHA384,
+        &[
+            0x13, 0xd3, 0x36, 0x9f, 0x3c, 0x78, 0xa0, 0x32, 0x40, 0xee, 0x16, 0xe9, 0x11, 0x12,
+            0x66, 0xc7, 0x51, 0xad, 0xd8, 0x3c, 0xa1, 0xa3, 0x97, 0x74, 0xd7, 0x45, 0xff, 0xa7,
+            0x88, 0x9e, 0x52, 0x17, 0x2e, 0xaa, 0x3a, 0xd2, 0x35, 0xd8, 0xd5, 0x35, 0xfd, 0x65,
+            0x70, 0x9f, 0xa9, 0xf9, 0xfa, 0x23,
+        ],
+    );
+}
+
+fn expand_label(cipher: Cipher, expected: &[u8]) {
+    fixture_init();
+
+    let l = cipher_hash_len(cipher);
+    let (prk, _) = import_keys(cipher);
+    let secret = hkdf::expand_label(
+        TLS_VERSION_1_3,
+        cipher,
+        &prk,
+        &SESSION_HASH[0..l],
+        "master secret",
+    )
+    .expect("HKDF-Expand-Label should work");
+    let raw_secret = secret.as_bytes().expect("key should have bytes");
+    assert_eq!(raw_secret, expected);
+}
+
+#[test]
+fn expand_label_sha256() {
+    const EXPECTED: &[u8] = &[
+        0x3e, 0x4e, 0x6e, 0xd0, 0xbc, 0xc4, 0xf4, 0xff, 0xf0, 0xf5, 0x69, 0xd0, 0x6c, 0x1e, 0x0e,
+        0x10, 0x32, 0xaa, 0xd7, 0xa3, 0xef, 0xf6, 0xa8, 0x65, 0x8e, 0xbe, 0xee, 0xc7, 0x1f, 0x01,
+        0x6d, 0x3c,
+    ];
+    expand_label(TLS_AES_128_GCM_SHA256, EXPECTED);
+    expand_label(TLS_CHACHA20_POLY1305_SHA256, EXPECTED);
+}
+
+#[test]
+fn expand_label_sha384() {
+    expand_label(
+        TLS_AES_256_GCM_SHA384,
+        &[
+            0x41, 0xea, 0x77, 0x09, 0x8c, 0x90, 0x04, 0x10, 0xec, 0xbc, 0x37, 0xd8, 0x5b, 0x54,
+            0xcd, 0x7b, 0x08, 0x15, 0x13, 0x20, 0xed, 0x1e, 0x3f, 0x54, 0x74, 0xf7, 0x8b, 0x06,
+            0x38, 0x28, 0x06, 0x37, 0x75, 0x23, 0xa2, 0xb7, 0x34, 0xb1, 0x72, 0x2e, 0x59, 0x6d,
+            0x5a, 0x31, 0xf5, 0x53, 0xab, 0x99,
+        ],
+    );
+}
diff --git a/third_party/rust/neqo-crypto/tests/hp.rs b/third_party/rust/neqo-crypto/tests/hp.rs
new file mode 100644
index 0000000000..c4ffa3f788
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/hp.rs
@@ -0,0 +1,78 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+
+use neqo_crypto::constants::{
+    Cipher, TLS_AES_128_GCM_SHA256, TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256,
+    TLS_VERSION_1_3,
+};
+use neqo_crypto::hkdf;
+use neqo_crypto::hp::HpKey;
+use std::mem;
+use test_fixture::fixture_init;
+
+fn make_hp(cipher: Cipher) -> HpKey {
+    fixture_init();
+    let ikm = hkdf::import_key(TLS_VERSION_1_3, &[0; 16]).expect("import IKM");
+    let prk = hkdf::extract(TLS_VERSION_1_3, cipher, None, &ikm).expect("extract works");
+    HpKey::extract(TLS_VERSION_1_3, cipher, &prk, "hp").expect("extract label works")
+}
+
+fn hp_test(cipher: Cipher, expected: &[u8]) {
+    let hp = make_hp(cipher);
+    let mask = hp.mask(&[0; 16]).expect("should produce a mask");
+    assert_eq!(mask, expected, "first invocation should be correct");
+
+    let hp2 = hp.clone();
+    let mask = hp2.mask(&[0; 16]).expect("clone produces mask");
+    assert_eq!(mask, expected, "clone should produce the same mask");
+
+    let mask = hp.mask(&[0; 16]).expect("should produce a mask again");
+    assert_eq!(mask, expected, "second invocation should be the same");
+}
+
+#[test]
+fn aes128() {
+    const EXPECTED: &[u8] = &[
+        0x04, 0x7b, 0xda, 0x65, 0xc3, 0x41, 0xcf, 0xbc, 0x5d, 0xe1, 0x75, 0x2b, 0x9d, 0x7d, 0xc3,
+        0x14,
+    ];
+
+    hp_test(TLS_AES_128_GCM_SHA256, EXPECTED);
+}
+
+#[test]
+fn aes256() {
+    const EXPECTED: &[u8] = &[
+        0xb5, 0xea, 0xa2, 0x1c, 0x25, 0x77, 0x48, 0x18, 0xbf, 0x25, 0xea, 0xfa, 0xbd, 0x8d, 0x80,
+        0x2b,
+    ];
+
+    hp_test(TLS_AES_256_GCM_SHA384, EXPECTED);
+}
+
+#[test]
+fn chacha20_ctr() {
+    const EXPECTED: &[u8] = &[
+        0x34, 0x11, 0xb3, 0x53, 0x02, 0x0b, 0x16, 0xda, 0x0a, 0x85, 0x5a, 0x52, 0x0d, 0x06, 0x07,
+        0x1f, 0x4a, 0xb1, 0xaf, 0xf7, 0x83, 0xa8, 0xf0, 0x29, 0xc3, 0x19, 0xef, 0x57, 0x48, 0xe7,
+        0x8e, 0x3e, 0x11, 0x91, 0xe1, 0xd5, 0x92, 0x8f, 0x61, 0x6d, 0x3f, 0x3d, 0x76, 0xb5, 0x29,
+        0xf1, 0x62, 0x2f, 0x1e, 0xad, 0xdd, 0x23, 0x59, 0x45, 0xac, 0xd2, 0x19, 0x8a, 0xb4, 0x1f,
+        0x2f, 0x52, 0x46, 0x89,
+    ];
+
+    hp_test(TLS_CHACHA20_POLY1305_SHA256, EXPECTED);
+}
+
+#[test]
+#[should_panic]
+fn aes_short() {
+    let hp = make_hp(TLS_AES_128_GCM_SHA256);
+    mem::drop(hp.mask(&[0; 15]));
+}
+
+#[test]
+#[should_panic]
+fn chacha20_short() {
+    let hp = make_hp(TLS_CHACHA20_POLY1305_SHA256);
+    mem::drop(hp.mask(&[0; 15]));
+}
diff --git a/third_party/rust/neqo-crypto/tests/init.rs b/third_party/rust/neqo-crypto/tests/init.rs
new file mode 100644
index 0000000000..21291ceebb
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/init.rs
@@ -0,0 +1,44 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+
+// This uses external interfaces to neqo_crypto rather than being a module
+// inside of lib.rs. Because all other code uses the test_fixture module,
+// they will be calling into the public version of init_db().  Calling into
+// the version exposed to an inner module in lib.rs would result in calling
+// a different version of init_db.  That causes explosions as they get
+// different versions of the Once instance they use and they initialize NSS
+// twice, probably likely in parallel.  That doesn't work out well.
+use neqo_crypto::{assert_initialized, init_db};
+
+// Pull in the NSS internals so that we can ask NSS if it thinks that
+// it is properly initialized.
+#[allow(
+    dead_code,
+    non_upper_case_globals,
+    clippy::redundant_static_lifetimes,
+    clippy::unseparated_literal_suffix,
+    clippy::upper_case_acronyms
+)]
+mod nss {
+    include!(concat!(env!("OUT_DIR"), "/nss_init.rs"));
+}
+
+#[cfg(nss_nodb)]
+#[test]
+fn init_nodb() {
+    init();
+    assert_initialized();
+    unsafe {
+        assert!(nss::NSS_IsInitialized() != 0);
+    }
+}
+
+#[cfg(not(nss_nodb))]
+#[test]
+fn init_withdb() {
+    init_db(::test_fixture::NSS_DB_PATH);
+    assert_initialized();
+    unsafe {
+        assert!(nss::NSS_IsInitialized() != 0);
+    }
+}
diff --git a/third_party/rust/neqo-crypto/tests/selfencrypt.rs b/third_party/rust/neqo-crypto/tests/selfencrypt.rs
new file mode 100644
index 0000000000..5828f09392
--- /dev/null
+++ b/third_party/rust/neqo-crypto/tests/selfencrypt.rs
@@ -0,0 +1,92 @@
+#![cfg_attr(feature = "deny-warnings", deny(warnings))]
+#![warn(clippy::pedantic)]
+#![cfg(not(feature = "fuzzing"))]
+
+use neqo_crypto::constants::{TLS_AES_128_GCM_SHA256, TLS_VERSION_1_3};
+use neqo_crypto::{init, selfencrypt::SelfEncrypt, Error};
+
+#[test]
+fn se_create() {
+    init();
+    SelfEncrypt::new(TLS_VERSION_1_3, TLS_AES_128_GCM_SHA256).expect("constructor works");
+}
+
+const PLAINTEXT: &[u8] = b"PLAINTEXT";
+const AAD: &[u8] = b"AAD";
+
+fn sealed() -> (SelfEncrypt, Vec<u8>) {
+    init();
+    let se = SelfEncrypt::new(TLS_VERSION_1_3, TLS_AES_128_GCM_SHA256).unwrap();
+    let sealed = se.seal(AAD, PLAINTEXT).expect("sealing works");
+    (se, sealed)
+}
+
+#[test]
+fn seal_open() {
+    let (se, sealed) = sealed();
+    let opened = se.open(AAD, &sealed).expect("opening works");
+    assert_eq!(&opened[..], PLAINTEXT);
+}
+
+#[test]
+fn seal_rotate_open() {
+    let (mut se, sealed) = sealed();
+    se.rotate().expect("rotate should be infallible");
+    let opened = se.open(AAD, &sealed).expect("opening works");
+    assert_eq!(&opened[..], PLAINTEXT);
+}
+
+#[test]
+fn seal_rotate_twice_open() {
+    let (mut se, sealed) = sealed();
+    se.rotate().expect("rotate should be infallible");
+    se.rotate().expect("rotate should be infallible");
+    let res = se.open(AAD, &sealed);
+    assert_eq!(res.unwrap_err(), Error::SelfEncryptFailure);
+}
+
+#[test]
+fn damage_version() {
+    let (se, mut sealed) = sealed();
+    sealed[0] ^= 0x80;
+    let res = se.open(AAD, &sealed);
+    assert_eq!(res.unwrap_err(), Error::SelfEncryptFailure);
+}
+
+fn assert_bad_data<T>(res: Result<T, Error>) {
+    if let Err(Error::NssError { name, .. }) = res {
+        assert_eq!(name, "SEC_ERROR_BAD_DATA");
+    }
+}
+
+#[test]
+fn damage_salt() {
+    let (se, mut sealed) = sealed();
+    sealed[4] ^= 0x10;
+    let res = se.open(AAD, &sealed);
+    assert_bad_data(res);
+}
+
+#[test]
+fn damage_ciphertext() {
+    let (se, mut sealed) = sealed();
+    sealed[20] ^= 0x2f;
+    let res = se.open(AAD, &sealed);
+    assert_bad_data(res);
+}
+
+#[test]
+fn damage_auth_tag() {
+    let (se, mut sealed) = sealed();
+    let idx = sealed.len() - 1;
+    sealed[idx] ^= 0x3;
+    let res = se.open(AAD, &sealed);
+    assert_bad_data(res);
+}
+
+#[test]
+fn truncate() {
+    let (se, sealed) = sealed();
+    let res = se.open(AAD, &sealed[0..(sealed.len() - 1)]);
+    assert_bad_data(res);
+}