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, 767 insertions, 0 deletions

diff --git a/crypto/boringssl/.gitignore b/crypto/boringssl/.gitignore
new file mode 100644
index 0000000..3d57277
--- /dev/null
+++ b/crypto/boringssl/.gitignore
@@ -0,0 +1,2 @@
+/libngtcp2_crypto_boringssl.pc
+/libngtcp2_crypto_boringssl.a
diff --git a/crypto/boringssl/CMakeLists.txt b/crypto/boringssl/CMakeLists.txt
new file mode 100644
index 0000000..ebaae3d
--- /dev/null
+++ b/crypto/boringssl/CMakeLists.txt
@@ -0,0 +1,63 @@
+# ngtcp2
+
+# Copyright (c) 2020 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_boringssl_SOURCES
+  boringssl.c
+  ../shared.c
+)
+
+set(ngtcp2_crypto_boringssl_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"
+  "${CMAKE_CURRENT_BINARY_DIR}/../../crypto"
+  "${BORINGSSL_INCLUDE_DIRS}"
+)
+
+foreach(name libngtcp2_crypto_boringssl.pc)
+  configure_file("${name}.in" "${name}" @ONLY)
+endforeach()
+
+if(ENABLE_STATIC_LIB)
+  # Public static library
+  add_library(ngtcp2_crypto_boringssl_static ${ngtcp2_crypto_boringssl_SOURCES})
+  set_target_properties(ngtcp2_crypto_boringssl_static PROPERTIES
+    COMPILE_FLAGS "${WARNCFLAGS}"
+    C_VISIBILITY_PRESET hidden
+  )
+  target_compile_definitions(ngtcp2_crypto_boringssl_static PUBLIC
+    "-DNGTCP2_STATICLIB")
+  target_include_directories(ngtcp2_crypto_boringssl_static PUBLIC
+    ${ngtcp2_crypto_boringssl_INCLUDE_DIRS})
+
+  install(TARGETS ngtcp2_crypto_boringssl_static
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+endif()
+
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libngtcp2_crypto_boringssl.pc"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
diff --git a/crypto/boringssl/Makefile.am b/crypto/boringssl/Makefile.am
new file mode 100644
index 0000000..7743233
--- /dev/null
+++ b/crypto/boringssl/Makefile.am
@@ -0,0 +1,39 @@
+# ngtcp2
+
+# Copyright (c) 2020 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 \
+	@BORINGSSL_CFLAGS@
+AM_LDFLAGS = ${LIBTOOL_LDFLAGS}
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libngtcp2_crypto_boringssl.pc
+DISTCLEANFILES = $(pkgconfig_DATA)
+
+lib_LIBRARIES = libngtcp2_crypto_boringssl.a
+
+libngtcp2_crypto_boringssl_a_SOURCES = boringssl.c ../shared.c ../shared.h
diff --git a/crypto/boringssl/boringssl.c b/crypto/boringssl/boringssl.c
new file mode 100644
index 0000000..8b650bd
--- /dev/null
+++ b/crypto/boringssl/boringssl.c
@@ -0,0 +1,630 @@
+/*
+ * ngtcp2
+ *
+ * Copyright (c) 2020 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 <string.h>
+
+#include <ngtcp2/ngtcp2_crypto.h>
+#include <ngtcp2/ngtcp2_crypto_boringssl.h>
+
+#include <openssl/ssl.h>
+#include <openssl/evp.h>
+#include <openssl/hkdf.h>
+#include <openssl/aes.h>
+#include <openssl/chacha.h>
+#include <openssl/rand.h>
+
+#include "shared.h"
+
+typedef enum ngtcp2_crypto_boringssl_cipher_type {
+  NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_128,
+  NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_256,
+  NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_CHACHA20,
+} ngtcp2_crypto_boringssl_cipher_type;
+
+typedef struct ngtcp2_crypto_boringssl_cipher {
+  ngtcp2_crypto_boringssl_cipher_type type;
+} ngtcp2_crypto_boringssl_cipher;
+
+static ngtcp2_crypto_boringssl_cipher crypto_cipher_aes_128 = {
+    NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_128,
+};
+
+static ngtcp2_crypto_boringssl_cipher crypto_cipher_aes_256 = {
+    NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_256,
+};
+
+static ngtcp2_crypto_boringssl_cipher crypto_cipher_chacha20 = {
+    NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_CHACHA20,
+};
+
+ngtcp2_crypto_aead *ngtcp2_crypto_aead_aes_128_gcm(ngtcp2_crypto_aead *aead) {
+  return ngtcp2_crypto_aead_init(aead, (void *)EVP_aead_aes_128_gcm());
+}
+
+ngtcp2_crypto_md *ngtcp2_crypto_md_sha256(ngtcp2_crypto_md *md) {
+  md->native_handle = (void *)EVP_sha256();
+  return md;
+}
+
+ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_initial(ngtcp2_crypto_ctx *ctx) {
+  ngtcp2_crypto_aead_init(&ctx->aead, (void *)EVP_aead_aes_128_gcm());
+  ctx->md.native_handle = (void *)EVP_sha256();
+  ctx->hp.native_handle = (void *)&crypto_cipher_aes_128;
+  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 = EVP_AEAD_max_overhead(aead->native_handle);
+  return aead;
+}
+
+ngtcp2_crypto_aead *ngtcp2_crypto_aead_retry(ngtcp2_crypto_aead *aead) {
+  return ngtcp2_crypto_aead_init(aead, (void *)EVP_aead_aes_128_gcm());
+}
+
+static const EVP_AEAD *crypto_ssl_get_aead(SSL *ssl) {
+  switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
+  case TLS1_CK_AES_128_GCM_SHA256:
+    return EVP_aead_aes_128_gcm();
+  case TLS1_CK_AES_256_GCM_SHA384:
+    return EVP_aead_aes_256_gcm();
+  case TLS1_CK_CHACHA20_POLY1305_SHA256:
+    return EVP_aead_chacha20_poly1305();
+  default:
+    return NULL;
+  }
+}
+
+static uint64_t crypto_ssl_get_aead_max_encryption(SSL *ssl) {
+  switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
+  case TLS1_CK_AES_128_GCM_SHA256:
+  case TLS1_CK_AES_256_GCM_SHA384:
+    return NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_GCM;
+  case TLS1_CK_CHACHA20_POLY1305_SHA256:
+    return NGTCP2_CRYPTO_MAX_ENCRYPTION_CHACHA20_POLY1305;
+  default:
+    return 0;
+  }
+}
+
+static uint64_t crypto_ssl_get_aead_max_decryption_failure(SSL *ssl) {
+  switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
+  case TLS1_CK_AES_128_GCM_SHA256:
+  case TLS1_CK_AES_256_GCM_SHA384:
+    return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_GCM;
+  case TLS1_CK_CHACHA20_POLY1305_SHA256:
+    return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_CHACHA20_POLY1305;
+  default:
+    return 0;
+  }
+}
+
+static const ngtcp2_crypto_boringssl_cipher *crypto_ssl_get_hp(SSL *ssl) {
+  switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
+  case TLS1_CK_AES_128_GCM_SHA256:
+    return &crypto_cipher_aes_128;
+  case TLS1_CK_AES_256_GCM_SHA384:
+    return &crypto_cipher_aes_256;
+  case TLS1_CK_CHACHA20_POLY1305_SHA256:
+    return &crypto_cipher_chacha20;
+  default:
+    return NULL;
+  }
+}
+
+static const EVP_MD *crypto_ssl_get_md(SSL *ssl) {
+  switch (SSL_CIPHER_get_id(SSL_get_current_cipher(ssl))) {
+  case TLS1_CK_AES_128_GCM_SHA256:
+  case TLS1_CK_CHACHA20_POLY1305_SHA256:
+    return EVP_sha256();
+  case TLS1_CK_AES_256_GCM_SHA384:
+    return EVP_sha384();
+  default:
+    return NULL;
+  }
+}
+
+ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls(ngtcp2_crypto_ctx *ctx,
+                                         void *tls_native_handle) {
+  SSL *ssl = tls_native_handle;
+  ngtcp2_crypto_aead_init(&ctx->aead, (void *)crypto_ssl_get_aead(ssl));
+  ctx->md.native_handle = (void *)crypto_ssl_get_md(ssl);
+  ctx->hp.native_handle = (void *)crypto_ssl_get_hp(ssl);
+  ctx->max_encryption = crypto_ssl_get_aead_max_encryption(ssl);
+  ctx->max_decryption_failure = crypto_ssl_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 EVP_MD *md) {
+  return (size_t)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 EVP_AEAD *aead) {
+  return (size_t)EVP_AEAD_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 EVP_AEAD *aead) {
+  return (size_t)EVP_AEAD_nonce_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 EVP_AEAD *cipher = aead->native_handle;
+  size_t keylen = crypto_aead_keylen(cipher);
+  EVP_AEAD_CTX *actx;
+
+  (void)noncelen;
+
+  actx = EVP_AEAD_CTX_new(cipher, key, keylen, EVP_AEAD_DEFAULT_TAG_LENGTH);
+  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) {
+  return ngtcp2_crypto_aead_ctx_encrypt_init(aead_ctx, aead, key, noncelen);
+}
+
+void ngtcp2_crypto_aead_ctx_free(ngtcp2_crypto_aead_ctx *aead_ctx) {
+  if (aead_ctx->native_handle) {
+    EVP_AEAD_CTX_free(aead_ctx->native_handle);
+  }
+}
+
+typedef struct ngtcp2_crypto_boringssl_cipher_ctx {
+  ngtcp2_crypto_boringssl_cipher_type type;
+  union {
+    /* aes_key is an encryption key when type is either
+       NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_128 or
+       NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_256. */
+    AES_KEY aes_key;
+    /* key contains an encryption key when type ==
+       NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_CHACHA20. */
+    uint8_t key[32];
+  };
+} ngtcp2_crypto_boringssl_cipher_ctx;
+
+int ngtcp2_crypto_cipher_ctx_encrypt_init(ngtcp2_crypto_cipher_ctx *cipher_ctx,
+                                          const ngtcp2_crypto_cipher *cipher,
+                                          const uint8_t *key) {
+  ngtcp2_crypto_boringssl_cipher *hp_cipher = cipher->native_handle;
+  ngtcp2_crypto_boringssl_cipher_ctx *ctx;
+  int rv;
+  (void)rv;
+
+  ctx = malloc(sizeof(*ctx));
+  if (ctx == NULL) {
+    return -1;
+  }
+
+  ctx->type = hp_cipher->type;
+  cipher_ctx->native_handle = ctx;
+
+  switch (hp_cipher->type) {
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_128:
+    rv = AES_set_encrypt_key(key, 128, &ctx->aes_key);
+    assert(0 == rv);
+    return 0;
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_256:
+    rv = AES_set_encrypt_key(key, 256, &ctx->aes_key);
+    assert(0 == rv);
+    return 0;
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_CHACHA20:
+    memcpy(ctx->key, key, sizeof(ctx->key));
+    return 0;
+  default:
+    assert(0);
+    abort();
+  };
+}
+
+void ngtcp2_crypto_cipher_ctx_free(ngtcp2_crypto_cipher_ctx *cipher_ctx) {
+  if (!cipher_ctx->native_handle) {
+    return;
+  }
+
+  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) {
+  const EVP_MD *prf = md->native_handle;
+  size_t destlen = (size_t)EVP_MD_size(prf);
+
+  if (HKDF_extract(dest, &destlen, prf, secret, secretlen, salt, saltlen) !=
+      1) {
+    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) {
+  const EVP_MD *prf = md->native_handle;
+
+  if (HKDF_expand(dest, destlen, prf, secret, secretlen, info, infolen) != 1) {
+    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) {
+  const EVP_MD *prf = md->native_handle;
+
+  if (HKDF(dest, destlen, prf, secret, secretlen, salt, saltlen, info,
+           infolen) != 1) {
+    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) {
+  const EVP_AEAD *cipher = aead->native_handle;
+  EVP_AEAD_CTX *actx = aead_ctx->native_handle;
+  size_t max_outlen = plaintextlen + EVP_AEAD_max_overhead(cipher);
+  size_t outlen;
+
+  if (EVP_AEAD_CTX_seal(actx, dest, &outlen, max_outlen, nonce, noncelen,
+                        plaintext, plaintextlen, aad, aadlen) != 1) {
+    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) {
+  const EVP_AEAD *cipher = aead->native_handle;
+  EVP_AEAD_CTX *actx = aead_ctx->native_handle;
+  size_t max_overhead = EVP_AEAD_max_overhead(cipher);
+  size_t max_outlen;
+  size_t outlen;
+
+  if (ciphertextlen < max_overhead) {
+    return -1;
+  }
+
+  max_outlen = ciphertextlen - max_overhead;
+
+  if (EVP_AEAD_CTX_open(actx, dest, &outlen, max_outlen, nonce, noncelen,
+                        ciphertext, ciphertextlen, aad, aadlen) != 1) {
+    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";
+  ngtcp2_crypto_boringssl_cipher_ctx *ctx = hp_ctx->native_handle;
+  uint32_t counter;
+
+  (void)hp;
+
+  switch (ctx->type) {
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_128:
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_AES_256:
+    AES_ecb_encrypt(sample, dest, &ctx->aes_key, 1);
+    return 0;
+  case NGTCP2_CRYPTO_BORINGSSL_CIPHER_TYPE_CHACHA20:
+#if defined(WORDS_BIGENDIAN)
+    counter = (uint32_t)sample[0] + (uint32_t)(sample[1] << 8) +
+              (uint32_t)(sample[2] << 16) + (uint32_t)(sample[3] << 24);
+#else  /* !WORDS_BIGENDIAN */
+    memcpy(&counter, sample, sizeof(counter));
+#endif /* !WORDS_BIGENDIAN */
+    CRYPTO_chacha_20(dest, PLAINTEXT, sizeof(PLAINTEXT) - 1, ctx->key,
+                     sample + sizeof(counter), counter);
+    return 0;
+  default:
+    assert(0);
+    abort();
+  }
+}
+
+int ngtcp2_crypto_read_write_crypto_data(ngtcp2_conn *conn,
+                                         ngtcp2_crypto_level crypto_level,
+                                         const uint8_t *data, size_t datalen) {
+  SSL *ssl = ngtcp2_conn_get_tls_native_handle(conn);
+  int rv;
+  int err;
+
+  if (SSL_provide_quic_data(
+          ssl, ngtcp2_crypto_boringssl_from_ngtcp2_crypto_level(crypto_level),
+          data, datalen) != 1) {
+    return -1;
+  }
+
+  if (!ngtcp2_conn_get_handshake_completed(conn)) {
+  retry:
+    rv = SSL_do_handshake(ssl);
+    if (rv <= 0) {
+      err = SSL_get_error(ssl, rv);
+      switch (err) {
+      case SSL_ERROR_WANT_READ:
+      case SSL_ERROR_WANT_WRITE:
+        return 0;
+      case SSL_ERROR_SSL:
+        return -1;
+      case SSL_ERROR_EARLY_DATA_REJECTED:
+        assert(!ngtcp2_conn_is_server(conn));
+
+        SSL_reset_early_data_reject(ssl);
+
+        rv = ngtcp2_conn_early_data_rejected(conn);
+        if (rv != 0) {
+          return -1;
+        }
+
+        goto retry;
+      default:
+        return -1;
+      }
+    }
+
+    if (SSL_in_early_data(ssl)) {
+      return 0;
+    }
+
+    ngtcp2_conn_handshake_completed(conn);
+  }
+
+  rv = SSL_process_quic_post_handshake(ssl);
+  if (rv != 1) {
+    err = SSL_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) {
+  SSL *ssl = tls;
+  const uint8_t *tp;
+  size_t tplen;
+  int rv;
+
+  SSL_get_peer_quic_transport_params(ssl, &tp, &tplen);
+
+  rv = ngtcp2_conn_decode_remote_transport_params(conn, tp, tplen);
+  if (rv != 0) {
+    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) {
+  if (SSL_set_quic_transport_params(tls, buf, len) != 1) {
+    return -1;
+  }
+
+  return 0;
+}
+
+ngtcp2_crypto_level ngtcp2_crypto_boringssl_from_ssl_encryption_level(
+    enum ssl_encryption_level_t ssl_level) {
+  switch (ssl_level) {
+  case ssl_encryption_initial:
+    return NGTCP2_CRYPTO_LEVEL_INITIAL;
+  case ssl_encryption_early_data:
+    return NGTCP2_CRYPTO_LEVEL_EARLY;
+  case ssl_encryption_handshake:
+    return NGTCP2_CRYPTO_LEVEL_HANDSHAKE;
+  case ssl_encryption_application:
+    return NGTCP2_CRYPTO_LEVEL_APPLICATION;
+  default:
+    assert(0);
+    abort();
+  }
+}
+
+enum ssl_encryption_level_t ngtcp2_crypto_boringssl_from_ngtcp2_crypto_level(
+    ngtcp2_crypto_level crypto_level) {
+  switch (crypto_level) {
+  case NGTCP2_CRYPTO_LEVEL_INITIAL:
+    return ssl_encryption_initial;
+  case NGTCP2_CRYPTO_LEVEL_HANDSHAKE:
+    return ssl_encryption_handshake;
+  case NGTCP2_CRYPTO_LEVEL_APPLICATION:
+    return ssl_encryption_application;
+  case NGTCP2_CRYPTO_LEVEL_EARLY:
+    return ssl_encryption_early_data;
+  default:
+    assert(0);
+    abort();
+  }
+}
+
+int ngtcp2_crypto_get_path_challenge_data_cb(ngtcp2_conn *conn, uint8_t *data,
+                                             void *user_data) {
+  (void)conn;
+  (void)user_data;
+
+  if (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) {
+  if (RAND_bytes(data, datalen) != 1) {
+    return -1;
+  }
+
+  return 0;
+}
+
+static int set_read_secret(SSL *ssl, enum ssl_encryption_level_t bssl_level,
+                           const SSL_CIPHER *cipher, const uint8_t *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_boringssl_from_ssl_encryption_level(bssl_level);
+  (void)cipher;
+
+  if (ngtcp2_crypto_derive_and_install_rx_key(conn, NULL, NULL, NULL, level,
+                                              secret, secretlen) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int set_write_secret(SSL *ssl, enum ssl_encryption_level_t bssl_level,
+                            const SSL_CIPHER *cipher, const uint8_t *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_boringssl_from_ssl_encryption_level(bssl_level);
+  (void)cipher;
+
+  if (ngtcp2_crypto_derive_and_install_tx_key(conn, NULL, NULL, NULL, level,
+                                              secret, secretlen) != 0) {
+    return 0;
+  }
+
+  return 1;
+}
+
+static int add_handshake_data(SSL *ssl, enum ssl_encryption_level_t bssl_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_boringssl_from_ssl_encryption_level(bssl_level);
+  int rv;
+
+  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(SSL *ssl) {
+  (void)ssl;
+  return 1;
+}
+
+static int send_alert(SSL *ssl, enum ssl_encryption_level_t bssl_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)bssl_level;
+
+  ngtcp2_conn_set_tls_alert(conn, alert);
+
+  return 1;
+}
+
+static SSL_QUIC_METHOD quic_method = {
+    set_read_secret, set_write_secret, add_handshake_data,
+    flush_flight,    send_alert,
+};
+
+static void crypto_boringssl_configure_context(SSL_CTX *ssl_ctx) {
+  SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
+  SSL_CTX_set_max_proto_version(ssl_ctx, TLS1_3_VERSION);
+  SSL_CTX_set_quic_method(ssl_ctx, &quic_method);
+}
+
+int ngtcp2_crypto_boringssl_configure_server_context(SSL_CTX *ssl_ctx) {
+  crypto_boringssl_configure_context(ssl_ctx);
+
+  return 0;
+}
+
+int ngtcp2_crypto_boringssl_configure_client_context(SSL_CTX *ssl_ctx) {
+  crypto_boringssl_configure_context(ssl_ctx);
+
+  return 0;
+}
diff --git a/crypto/boringssl/libngtcp2_crypto_boringssl.pc.in b/crypto/boringssl/libngtcp2_crypto_boringssl.pc.in
new file mode 100644
index 0000000..737970a
--- /dev/null
+++ b/crypto/boringssl/libngtcp2_crypto_boringssl.pc.in
@@ -0,0 +1,33 @@
+# ngtcp2
+
+# Copyright (c) 2020 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_boringssl
+Description: ngtcp2 BoringSSL crypto library
+URL: https://github.com/ngtcp2/ngtcp2
+Version: @VERSION@
+Libs: -L${libdir} -lngtcp2_crypto_boringssl
+Cflags: -I${includedir}