Adding upstream version 0.12.1+dfsg.upstream/0.12.1+dfsgupstream

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

5 files changed, 694 insertions, 0 deletions

diff --git a/crypto/wolfssl/.gitignore b/crypto/wolfssl/.gitignore
new file mode 100644
index 0000000..936b2be
--- /dev/null
+++ b/crypto/wolfssl/.gitignore
@@ -0,0 +1 @@
+/libngtcp2_crypto_wolfssl.pc
diff --git a/crypto/wolfssl/CMakeLists.txt b/crypto/wolfssl/CMakeLists.txt
new file mode 100644
index 0000000..8cea3e5
--- /dev/null
+++ b/crypto/wolfssl/CMakeLists.txt
@@ -0,0 +1,83 @@
+# ngtcp2
+
+# Copyright (c) 2022 ngtcp2
+
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+add_definitions(-DBUILDING_NGTCP2)
+
+set(ngtcp2_crypto_wolfssl_SOURCES
+  wolfssl.c
+  ../shared.c
+)
+
+set(ngtcp2_crypto_wolfssl_INCLUDE_DIRS
+  "${CMAKE_CURRENT_SOURCE_DIR}/../../lib/includes"
+  "${CMAKE_CURRENT_BINARY_DIR}/../../lib/includes"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../../lib"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../../crypto/includes"
+  "${CMAKE_CURRENT_BINARY_DIR}/../../crypto/includes"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../../crypto"
+  "${CMAKE_CURRENT_BINARY_DIR}/../../crypto"
+  "${WOLFSSL_INCLUDE_DIRS}"
+)
+
+foreach(name libngtcp2_crypto_wolfssl.pc)
+  configure_file("${name}.in" "${name}" @ONLY)
+endforeach()
+
+# Public shared library
+if(ENABLE_SHARED_LIB)
+  add_library(ngtcp2_crypto_wolfssl SHARED ${ngtcp2_crypto_wolfssl_SOURCES})
+  set_target_properties(ngtcp2_crypto_wolfssl PROPERTIES
+    COMPILE_FLAGS "${WARNCFLAGS}"
+    VERSION ${CRYPTO_WOLFSSL_LT_VERSION}
+    SOVERSION ${CRYPTO_WOLFSSL_LT_SOVERSION}
+    C_VISIBILITY_PRESET hidden
+    POSITION_INDEPENDENT_CODE ON
+  )
+  target_include_directories(ngtcp2_crypto_wolfssl PUBLIC
+    ${ngtcp2_crypto_wolfssl_INCLUDE_DIRS})
+  target_link_libraries(ngtcp2_crypto_wolfssl ngtcp2 ${WOLFSSL_LIBRARIES})
+
+  install(TARGETS ngtcp2_crypto_wolfssl
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+endif()
+
+if(ENABLE_STATIC_LIB)
+  # Public static library
+  add_library(ngtcp2_crypto_wolfssl_static ${ngtcp2_crypto_wolfssl_SOURCES})
+  set_target_properties(ngtcp2_crypto_wolfssl_static PROPERTIES
+    COMPILE_FLAGS "${WARNCFLAGS}"
+    C_VISIBILITY_PRESET hidden
+  )
+  target_compile_definitions(ngtcp2_crypto_wolfssl_static PUBLIC
+    "-DNGTCP2_STATICLIB")
+  target_include_directories(ngtcp2_crypto_wolfssl_static PUBLIC
+    ${ngtcp2_crypto_wolfssl_INCLUDE_DIRS})
+
+  install(TARGETS ngtcp2_crypto_wolfssl_static
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+endif()
+
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libngtcp2_crypto_wolfssl.pc"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
diff --git a/crypto/wolfssl/Makefile.am b/crypto/wolfssl/Makefile.am
new file mode 100644
index 0000000..b9d5f8c
--- /dev/null
+++ b/crypto/wolfssl/Makefile.am
@@ -0,0 +1,43 @@
+# ngtcp2
+
+# Copyright (c) 2022 ngtcp2 contributors
+
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+EXTRA_DIST = CMakeLists.txt
+
+AM_CFLAGS = $(WARNCFLAGS) $(DEBUGCFLAGS) $(EXTRACFLAG)
+AM_CPPFLAGS = -I$(top_srcdir)/lib/includes -I$(top_builddir)/lib/includes \
+	-I$(top_srcdir)/lib -DBUILDING_NGTCP2 \
+	-I$(top_srcdir)/crypto/includes -I$(top_builddir)/crypto/includes \
+	-I$(top_srcdir)/crypto -I$(top_builddir)/crypto \
+	@WOLFSSL_CFLAGS@
+AM_LDFLAGS = ${LIBTOOL_LDFLAGS}
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libngtcp2_crypto_wolfssl.pc
+DISTCLEANFILES = $(pkgconfig_DATA)
+
+lib_LTLIBRARIES = libngtcp2_crypto_wolfssl.la
+
+libngtcp2_crypto_wolfssl_la_SOURCES = wolfssl.c ../shared.c ../shared.h
+libngtcp2_crypto_wolfssl_la_LDFLAGS = -no-undefined \
+	-version-info $(CRYPTO_WOLFSSL_LT_CURRENT):$(CRYPTO_WOLFSSL_LT_REVISION):$(CRYPTO_WOLFSSL_LT_AGE)
+libngtcp2_crypto_wolfssl_la_LIBADD = $(top_builddir)/lib/libngtcp2.la \
+	@WOLFSSL_LIBS@
diff --git a/crypto/wolfssl/libngtcp2_crypto_wolfssl.pc.in b/crypto/wolfssl/libngtcp2_crypto_wolfssl.pc.in
new file mode 100644
index 0000000..720c784
--- /dev/null
+++ b/crypto/wolfssl/libngtcp2_crypto_wolfssl.pc.in
@@ -0,0 +1,33 @@
+# ngtcp2
+
+# Copyright (c) 2022 ngtcp2 contributors
+
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libngtcp2_crypto_wolfssl
+Description: ngtcp2 wolfSSL crypto library
+URL: https://github.com/ngtcp2/ngtcp2
+Version: @VERSION@
+Libs: -L${libdir} -lngtcp2_crypto_wolfssl
+Cflags: -I${includedir}
diff --git a/crypto/wolfssl/wolfssl.c b/crypto/wolfssl/wolfssl.c
new file mode 100644
index 0000000..4c341de
--- /dev/null
+++ b/crypto/wolfssl/wolfssl.c
@@ -0,0 +1,534 @@
+/*
+ * ngtcp2
+ *
+ * Copyright (c) 2022 ngtcp2 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <assert.h>
+
+#include <ngtcp2/ngtcp2_crypto.h>
+#include <ngtcp2/ngtcp2_crypto_wolfssl.h>
+
+#include <wolfssl/ssl.h>
+#include <wolfssl/quic.h>
+
+#include "shared.h"
+
+#define PRINTF_DEBUG 0
+#if PRINTF_DEBUG
+#  define DEBUG_MSG(...) fprintf(stderr, __VA_ARGS__)
+#else
+#  define DEBUG_MSG(...) (void)0
+#endif
+
+ngtcp2_crypto_aead *ngtcp2_crypto_aead_aes_128_gcm(ngtcp2_crypto_aead *aead) {
+  return ngtcp2_crypto_aead_init(aead, (void *)wolfSSL_EVP_aes_128_gcm());
+}
+
+ngtcp2_crypto_md *ngtcp2_crypto_md_sha256(ngtcp2_crypto_md *md) {
+  md->native_handle = (void *)wolfSSL_EVP_sha256();
+  return md;
+}
+
+ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_initial(ngtcp2_crypto_ctx *ctx) {
+  ngtcp2_crypto_aead_init(&ctx->aead, (void *)wolfSSL_EVP_aes_128_gcm());
+  ctx->md.native_handle = (void *)wolfSSL_EVP_sha256();
+  ctx->hp.native_handle = (void *)wolfSSL_EVP_aes_128_ctr();
+  ctx->max_encryption = 0;
+  ctx->max_decryption_failure = 0;
+  return ctx;
+}
+
+ngtcp2_crypto_aead *ngtcp2_crypto_aead_init(ngtcp2_crypto_aead *aead,
+                                            void *aead_native_handle) {
+  aead->native_handle = aead_native_handle;
+  aead->max_overhead = wolfSSL_quic_get_aead_tag_len(
+      (const WOLFSSL_EVP_CIPHER *)(aead_native_handle));
+  return aead;
+}
+
+ngtcp2_crypto_aead *ngtcp2_crypto_aead_retry(ngtcp2_crypto_aead *aead) {
+  return ngtcp2_crypto_aead_init(aead, (void *)wolfSSL_EVP_aes_128_gcm());
+}
+
+static uint64_t crypto_wolfssl_get_aead_max_encryption(WOLFSSL *ssl) {
+  const WOLFSSL_EVP_CIPHER *aead = wolfSSL_quic_get_aead(ssl);
+
+  if (wolfSSL_quic_aead_is_gcm(aead)) {
+    return NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_GCM;
+  }
+  if (wolfSSL_quic_aead_is_chacha20(aead)) {
+    return NGTCP2_CRYPTO_MAX_ENCRYPTION_CHACHA20_POLY1305;
+  }
+  if (wolfSSL_quic_aead_is_ccm(aead)) {
+    return NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_CCM;
+  }
+  return 0;
+}
+
+static uint64_t crypto_wolfssl_get_aead_max_decryption_failure(WOLFSSL *ssl) {
+  const WOLFSSL_EVP_CIPHER *aead = wolfSSL_quic_get_aead(ssl);
+
+  if (wolfSSL_quic_aead_is_gcm(aead)) {
+    return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_GCM;
+  }
+  if (wolfSSL_quic_aead_is_chacha20(aead)) {
+    return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_CHACHA20_POLY1305;
+  }
+  if (wolfSSL_quic_aead_is_ccm(aead)) {
+    return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_CCM;
+  }
+  return 0;
+}
+
+ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls(ngtcp2_crypto_ctx *ctx,
+                                         void *tls_native_handle) {
+  WOLFSSL *ssl = tls_native_handle;
+
+  ngtcp2_crypto_aead_init(&ctx->aead, (void *)wolfSSL_quic_get_aead(ssl));
+  ctx->md.native_handle = (void *)wolfSSL_quic_get_md(ssl);
+  ctx->hp.native_handle = (void *)wolfSSL_quic_get_hp(ssl);
+  ctx->max_encryption = crypto_wolfssl_get_aead_max_encryption(ssl);
+  ctx->max_decryption_failure =
+      crypto_wolfssl_get_aead_max_decryption_failure(ssl);
+  return ctx;
+}
+
+ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls_early(ngtcp2_crypto_ctx *ctx,
+                                               void *tls_native_handle) {
+  return ngtcp2_crypto_ctx_tls(ctx, tls_native_handle);
+}
+
+static size_t crypto_md_hashlen(const WOLFSSL_EVP_MD *md) {
+  return (size_t)wolfSSL_EVP_MD_size(md);
+}
+
+size_t ngtcp2_crypto_md_hashlen(const ngtcp2_crypto_md *md) {
+  return crypto_md_hashlen(md->native_handle);
+}
+
+static size_t crypto_aead_keylen(const WOLFSSL_EVP_CIPHER *aead) {
+  return (size_t)wolfSSL_EVP_Cipher_key_length(aead);
+}
+
+size_t ngtcp2_crypto_aead_keylen(const ngtcp2_crypto_aead *aead) {
+  return crypto_aead_keylen(aead->native_handle);
+}
+
+static size_t crypto_aead_noncelen(const WOLFSSL_EVP_CIPHER *aead) {
+  return (size_t)wolfSSL_EVP_CIPHER_iv_length(aead);
+}
+
+size_t ngtcp2_crypto_aead_noncelen(const ngtcp2_crypto_aead *aead) {
+  return crypto_aead_noncelen(aead->native_handle);
+}
+
+int ngtcp2_crypto_aead_ctx_encrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx,
+                                        const ngtcp2_crypto_aead *aead,
+                                        const uint8_t *key, size_t noncelen) {
+  const WOLFSSL_EVP_CIPHER *cipher = aead->native_handle;
+  WOLFSSL_EVP_CIPHER_CTX *actx;
+  static const uint8_t iv[AES_BLOCK_SIZE] = {0};
+
+  (void)noncelen;
+  actx = wolfSSL_quic_crypt_new(cipher, key, iv, /* encrypt */ 1);
+  if (actx == NULL) {
+    return -1;
+  }
+
+  aead_ctx->native_handle = actx;
+  return 0;
+}
+
+int ngtcp2_crypto_aead_ctx_decrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx,
+                                        const ngtcp2_crypto_aead *aead,
+                                        const uint8_t *key, size_t noncelen) {
+  const WOLFSSL_EVP_CIPHER *cipher = aead->native_handle;
+  WOLFSSL_EVP_CIPHER_CTX *actx;
+  static const uint8_t iv[AES_BLOCK_SIZE] = {0};
+
+  (void)noncelen;
+  actx = wolfSSL_quic_crypt_new(cipher, key, iv, /* encrypt */ 0);
+  if (actx == NULL) {
+    return -1;
+  }
+
+  aead_ctx->native_handle = actx;
+  return 0;
+}
+
+void ngtcp2_crypto_aead_ctx_free(ngtcp2_crypto_aead_ctx *aead_ctx) {
+  if (aead_ctx->native_handle) {
+    wolfSSL_EVP_CIPHER_CTX_free(aead_ctx->native_handle);
+  }
+}
+
+int ngtcp2_crypto_cipher_ctx_encrypt_init(ngtcp2_crypto_cipher_ctx *cipher_ctx,
+                                          const ngtcp2_crypto_cipher *cipher,
+                                          const uint8_t *key) {
+  WOLFSSL_EVP_CIPHER_CTX *actx;
+
+  actx =
+      wolfSSL_quic_crypt_new(cipher->native_handle, key, NULL, /* encrypt */ 1);
+  if (actx == NULL) {
+    return -1;
+  }
+
+  cipher_ctx->native_handle = actx;
+  return 0;
+}
+
+void ngtcp2_crypto_cipher_ctx_free(ngtcp2_crypto_cipher_ctx *cipher_ctx) {
+  if (cipher_ctx->native_handle) {
+    wolfSSL_EVP_CIPHER_CTX_free(cipher_ctx->native_handle);
+  }
+}
+
+int ngtcp2_crypto_hkdf_extract(uint8_t *dest, const ngtcp2_crypto_md *md,
+                               const uint8_t *secret, size_t secretlen,
+                               const uint8_t *salt, size_t saltlen) {
+  if (wolfSSL_quic_hkdf_extract(dest, md->native_handle, secret, secretlen,
+                                salt, saltlen) != WOLFSSL_SUCCESS) {
+    DEBUG_MSG("WOLFSSL: wolfSSL_quic_hkdf_extract FAILED\n");
+    return -1;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_hkdf_expand(uint8_t *dest, size_t destlen,
+                              const ngtcp2_crypto_md *md, const uint8_t *secret,
+                              size_t secretlen, const uint8_t *info,
+                              size_t infolen) {
+  if (wolfSSL_quic_hkdf_expand(dest, destlen, md->native_handle, secret,
+                               secretlen, info, infolen) != WOLFSSL_SUCCESS) {
+    DEBUG_MSG("WOLFSSL: wolfSSL_quic_hkdf_expand FAILED\n");
+    return -1;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_hkdf(uint8_t *dest, size_t destlen,
+                       const ngtcp2_crypto_md *md, const uint8_t *secret,
+                       size_t secretlen, const uint8_t *salt, size_t saltlen,
+                       const uint8_t *info, size_t infolen) {
+  if (wolfSSL_quic_hkdf(dest, destlen, md->native_handle, secret, secretlen,
+                        salt, saltlen, info, infolen) != WOLFSSL_SUCCESS) {
+    DEBUG_MSG("WOLFSSL: wolfSSL_quic_hkdf FAILED\n");
+    return -1;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_encrypt(uint8_t *dest, const ngtcp2_crypto_aead *aead,
+                          const ngtcp2_crypto_aead_ctx *aead_ctx,
+                          const uint8_t *plaintext, size_t plaintextlen,
+                          const uint8_t *nonce, size_t noncelen,
+                          const uint8_t *aad, size_t aadlen) {
+  (void)aead;
+  (void)noncelen;
+  if (wolfSSL_quic_aead_encrypt(dest, aead_ctx->native_handle, plaintext,
+                                plaintextlen, nonce, aad,
+                                aadlen) != WOLFSSL_SUCCESS) {
+    DEBUG_MSG("WOLFSSL: encrypt FAILED\n");
+    return -1;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_decrypt(uint8_t *dest, const ngtcp2_crypto_aead *aead,
+                          const ngtcp2_crypto_aead_ctx *aead_ctx,
+                          const uint8_t *ciphertext, size_t ciphertextlen,
+                          const uint8_t *nonce, size_t noncelen,
+                          const uint8_t *aad, size_t aadlen) {
+  (void)aead;
+  (void)noncelen;
+  if (wolfSSL_quic_aead_decrypt(dest, aead_ctx->native_handle, ciphertext,
+                                ciphertextlen, nonce, aad,
+                                aadlen) != WOLFSSL_SUCCESS) {
+
+    DEBUG_MSG("WOLFSSL: decrypt FAILED\n");
+    return -1;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_hp_mask(uint8_t *dest, const ngtcp2_crypto_cipher *hp,
+                          const ngtcp2_crypto_cipher_ctx *hp_ctx,
+                          const uint8_t *sample) {
+  static const uint8_t PLAINTEXT[] = "\x00\x00\x00\x00\x00";
+  WOLFSSL_EVP_CIPHER_CTX *actx = hp_ctx->native_handle;
+  int len;
+
+  (void)hp;
+
+  if (wolfSSL_EVP_EncryptInit_ex(actx, NULL, NULL, NULL, sample) !=
+          WOLFSSL_SUCCESS ||
+      wolfSSL_EVP_CipherUpdate(actx, dest, &len, PLAINTEXT,
+                               sizeof(PLAINTEXT) - 1) != WOLFSSL_SUCCESS ||
+      wolfSSL_EVP_EncryptFinal_ex(actx, dest + sizeof(PLAINTEXT) - 1, &len) !=
+          WOLFSSL_SUCCESS) {
+    DEBUG_MSG("WOLFSSL: hp_mask FAILED\n");
+    return -1;
+  }
+
+  return 0;
+}
+
+int ngtcp2_crypto_read_write_crypto_data(ngtcp2_conn *conn,
+                                         ngtcp2_crypto_level crypto_level,
+                                         const uint8_t *data, size_t datalen) {
+  WOLFSSL *ssl = ngtcp2_conn_get_tls_native_handle(conn);
+  WOLFSSL_ENCRYPTION_LEVEL level =
+      ngtcp2_crypto_wolfssl_from_ngtcp2_crypto_level(crypto_level);
+  int rv;
+  int err;
+
+  DEBUG_MSG("WOLFSSL: read/write crypto data, level=%d len=%lu\n", level,
+            datalen);
+  if (datalen > 0) {
+    rv = wolfSSL_provide_quic_data(ssl, level, data, datalen);
+    if (rv != WOLFSSL_SUCCESS) {
+      DEBUG_MSG("WOLFSSL: read/write crypto data FAILED, rv=%d\n", rv);
+      return -1;
+    }
+  }
+
+  if (!ngtcp2_conn_get_handshake_completed(conn)) {
+    rv = wolfSSL_quic_do_handshake(ssl);
+    if (rv <= 0) {
+      err = wolfSSL_get_error(ssl, rv);
+      DEBUG_MSG("WOLFSSL: do_handshake, rv=%d, err=%d\n", rv, err);
+      switch (err) {
+      case SSL_ERROR_WANT_READ:
+      case SSL_ERROR_WANT_WRITE:
+        return 0;
+      case SSL_ERROR_SSL:
+        return -1;
+      default:
+        return -1;
+      }
+    }
+
+    DEBUG_MSG("WOLFSSL: handshake done\n");
+    ngtcp2_conn_handshake_completed(conn);
+  }
+
+  rv = wolfSSL_process_quic_post_handshake(ssl);
+  DEBUG_MSG("WOLFSSL: process post handshake, rv=%d\n", rv);
+  if (rv != 1) {
+    err = wolfSSL_get_error(ssl, rv);
+    switch (err) {
+    case SSL_ERROR_WANT_READ:
+    case SSL_ERROR_WANT_WRITE:
+      return 0;
+    case SSL_ERROR_SSL:
+    case SSL_ERROR_ZERO_RETURN:
+      return -1;
+    default:
+      return -1;
+    }
+  }
+
+  return 0;
+}
+
+int ngtcp2_crypto_set_remote_transport_params(ngtcp2_conn *conn, void *tls) {
+  WOLFSSL *ssl = tls;
+  const uint8_t *tp;
+  size_t tplen;
+  int rv;
+
+  wolfSSL_get_peer_quic_transport_params(ssl, &tp, &tplen);
+  DEBUG_MSG("WOLFSSL: get peer transport params, len=%lu\n", tplen);
+
+  rv = ngtcp2_conn_decode_remote_transport_params(conn, tp, tplen);
+  if (rv != 0) {
+    DEBUG_MSG("WOLFSSL: decode peer transport params failed, rv=%d\n", rv);
+    ngtcp2_conn_set_tls_error(conn, rv);
+    return -1;
+  }
+
+  return 0;
+}
+
+int ngtcp2_crypto_set_local_transport_params(void *tls, const uint8_t *buf,
+                                             size_t len) {
+  WOLFSSL *ssl = tls;
+  DEBUG_MSG("WOLFSSL: set local peer transport params, len=%lu\n", len);
+  if (wolfSSL_set_quic_transport_params(ssl, buf, len) != WOLFSSL_SUCCESS) {
+    return -1;
+  }
+
+  return 0;
+}
+
+ngtcp2_crypto_level ngtcp2_crypto_wolfssl_from_wolfssl_encryption_level(
+    WOLFSSL_ENCRYPTION_LEVEL wolfssl_level) {
+  switch (wolfssl_level) {
+  case wolfssl_encryption_initial:
+    return NGTCP2_CRYPTO_LEVEL_INITIAL;
+  case wolfssl_encryption_early_data:
+    return NGTCP2_CRYPTO_LEVEL_EARLY;
+  case wolfssl_encryption_handshake:
+    return NGTCP2_CRYPTO_LEVEL_HANDSHAKE;
+  case wolfssl_encryption_application:
+    return NGTCP2_CRYPTO_LEVEL_APPLICATION;
+  default:
+    assert(0);
+    abort(); /* if NDEBUG is set */
+  }
+}
+
+WOLFSSL_ENCRYPTION_LEVEL
+ngtcp2_crypto_wolfssl_from_ngtcp2_crypto_level(
+    ngtcp2_crypto_level crypto_level) {
+  switch (crypto_level) {
+  case NGTCP2_CRYPTO_LEVEL_INITIAL:
+    return wolfssl_encryption_initial;
+  case NGTCP2_CRYPTO_LEVEL_HANDSHAKE:
+    return wolfssl_encryption_handshake;
+  case NGTCP2_CRYPTO_LEVEL_APPLICATION:
+    return wolfssl_encryption_application;
+  case NGTCP2_CRYPTO_LEVEL_EARLY:
+    return wolfssl_encryption_early_data;
+  default:
+    assert(0);
+    abort(); /* if NDEBUG is set */
+  }
+}
+
+int ngtcp2_crypto_get_path_challenge_data_cb(ngtcp2_conn *conn, uint8_t *data,
+                                             void *user_data) {
+  (void)conn;
+  (void)user_data;
+
+  DEBUG_MSG("WOLFSSL: get path challenge data\n");
+  if (wolfSSL_RAND_bytes(data, NGTCP2_PATH_CHALLENGE_DATALEN) != 1) {
+    return NGTCP2_ERR_CALLBACK_FAILURE;
+  }
+  return 0;
+}
+
+int ngtcp2_crypto_random(uint8_t *data, size_t datalen) {
+  DEBUG_MSG("WOLFSSL: get random\n");
+  if (wolfSSL_RAND_bytes(data, (int)datalen) != 1) {
+    return -1;
+  }
+  return 0;
+}
+
+static int set_encryption_secrets(WOLFSSL *ssl,
+                                  WOLFSSL_ENCRYPTION_LEVEL wolfssl_level,
+                                  const uint8_t *rx_secret,
+                                  const uint8_t *tx_secret, size_t secretlen) {
+  ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl);
+  ngtcp2_conn *conn = conn_ref->get_conn(conn_ref);
+  ngtcp2_crypto_level level =
+      ngtcp2_crypto_wolfssl_from_wolfssl_encryption_level(wolfssl_level);
+
+  DEBUG_MSG("WOLFSSL: set encryption secrets, level=%d, rxlen=%lu, txlen=%lu\n",
+            wolfssl_level, rx_secret ? secretlen : 0,
+            tx_secret ? secretlen : 0);
+  if (rx_secret &&
+      ngtcp2_crypto_derive_and_install_rx_key(conn, NULL, NULL, NULL, level,
+                                              rx_secret, secretlen) != 0) {
+    return 0;
+  }
+
+  if (tx_secret &&
+      ngtcp2_crypto_derive_and_install_tx_key(conn, NULL, NULL, NULL, level,
+                                              tx_secret, secretlen) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int add_handshake_data(WOLFSSL *ssl,
+                              WOLFSSL_ENCRYPTION_LEVEL wolfssl_level,
+                              const uint8_t *data, size_t datalen) {
+  ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl);
+  ngtcp2_conn *conn = conn_ref->get_conn(conn_ref);
+  ngtcp2_crypto_level level =
+      ngtcp2_crypto_wolfssl_from_wolfssl_encryption_level(wolfssl_level);
+  int rv;
+
+  DEBUG_MSG("WOLFSSL: add handshake data, level=%d len=%lu\n", wolfssl_level,
+            datalen);
+  rv = ngtcp2_conn_submit_crypto_data(conn, level, data, datalen);
+  if (rv != 0) {
+    ngtcp2_conn_set_tls_error(conn, rv);
+    return 0;
+  }
+
+  return 1;
+}
+
+static int flush_flight(WOLFSSL *ssl) {
+  (void)ssl;
+  return 1;
+}
+
+static int send_alert(WOLFSSL *ssl, enum wolfssl_encryption_level_t level,
+                      uint8_t alert) {
+  ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl);
+  ngtcp2_conn *conn = conn_ref->get_conn(conn_ref);
+  (void)level;
+
+  DEBUG_MSG("WOLFSSL: send alert, level=%d alert=%d\n", level, alert);
+  ngtcp2_conn_set_tls_alert(conn, alert);
+
+  return 1;
+}
+
+static WOLFSSL_QUIC_METHOD quic_method = {
+    set_encryption_secrets,
+    add_handshake_data,
+    flush_flight,
+    send_alert,
+};
+
+static void crypto_wolfssl_configure_context(WOLFSSL_CTX *ssl_ctx) {
+  wolfSSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
+  wolfSSL_CTX_set_max_proto_version(ssl_ctx, TLS1_3_VERSION);
+  wolfSSL_CTX_set_quic_method(ssl_ctx, &quic_method);
+}
+
+int ngtcp2_crypto_wolfssl_configure_server_context(WOLFSSL_CTX *ssl_ctx) {
+  crypto_wolfssl_configure_context(ssl_ctx);
+#if PRINTF_DEBUG
+  wolfSSL_Debugging_ON();
+#endif
+  return 0;
+}
+
+int ngtcp2_crypto_wolfssl_configure_client_context(WOLFSSL_CTX *ssl_ctx) {
+  crypto_wolfssl_configure_context(ssl_ctx);
+  wolfSSL_CTX_UseSessionTicket(ssl_ctx);
+#if PRINTF_DEBUG
+  wolfSSL_Debugging_ON();
+#endif
+  return 0;
+}