1 files changed, 148 insertions, 0 deletions
diff --git a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.h b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.h
new file mode 100644
index 0000000..3b91ce9
--- /dev/null
+++ b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_crypto.h
@@ -0,0 +1,148 @@
+/*
+ * ngtcp2
+ *
+ * Copyright (c) 2017 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.
+ */
+#ifndef NGTCP2_CRYPTO_H
+#define NGTCP2_CRYPTO_H
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <ngtcp2/ngtcp2.h>
+
+#include "ngtcp2_mem.h"
+
+/* NGTCP2_INITIAL_AEAD_OVERHEAD is an overhead of AEAD used by Initial
+   packets.  Because QUIC uses AEAD_AES_128_GCM, the overhead is 16
+   bytes. */
+#define NGTCP2_INITIAL_AEAD_OVERHEAD 16
+
+/* NGTCP2_MAX_AEAD_OVERHEAD is expected maximum AEAD overhead. */
+#define NGTCP2_MAX_AEAD_OVERHEAD 16
+
+/* ngtcp2_transport_param_id is the registry of QUIC transport
+   parameter ID. */
+typedef enum ngtcp2_transport_param_id {
+  NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID = 0x0000,
+  NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT = 0x0001,
+  NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN = 0x0002,
+  NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE = 0x0003,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA = 0x0004,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL = 0x0005,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE = 0x0006,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI = 0x0007,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI = 0x0008,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI = 0x0009,
+  NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT = 0x000a,
+  NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY = 0x000b,
+  NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION = 0x000c,
+  NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS = 0x000d,
+  NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT = 0x000e,
+  NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID = 0x000f,
+  NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID = 0x0010,
+  /* https://datatracker.ietf.org/doc/html/rfc9221 */
+  NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE = 0x0020,
+  NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT = 0x2ab2,
+  /* https://datatracker.ietf.org/doc/html/draft-ietf-quic-version-negotiation-14
+   */
+  NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION = 0x11,
+} ngtcp2_transport_param_id;
+
+/* NGTCP2_CRYPTO_KM_FLAG_NONE indicates that no flag is set. */
+#define NGTCP2_CRYPTO_KM_FLAG_NONE 0x00u
+/* NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE is set if key phase bit is
+   set. */
+#define NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE 0x01u
+
+typedef struct ngtcp2_crypto_km {
+  ngtcp2_vec secret;
+  ngtcp2_crypto_aead_ctx aead_ctx;
+  ngtcp2_vec iv;
+  /* pkt_num is a packet number of a packet which uses this keying
+     material.  For encryption key, it is the lowest packet number of
+     a packet.  For decryption key, it is the lowest packet number of
+     a packet which can be decrypted with this keying material. */
+  int64_t pkt_num;
+  /* use_count is the number of encryption applied with this key.
+     This field is only used for tx key. */
+  uint64_t use_count;
+  /* flags is the bitwise OR of zero or more of
+     NGTCP2_CRYPTO_KM_FLAG_*. */
+  uint8_t flags;
+} ngtcp2_crypto_km;
+
+/*
+ * ngtcp2_crypto_km_new creates new ngtcp2_crypto_km object and
+ * assigns its pointer to |*pckm|.  The |secret| of length
+ * |secretlen|, the |key| of length |keylen| and the |iv| of length
+ * |ivlen| are copied to |*pckm|.  If |secretlen| == 0, the function
+ * assumes no secret is given which is acceptable.  The sole reason to
+ * store secret is update keys.  Only 1RTT key can be updated.
+ */
+int ngtcp2_crypto_km_new(ngtcp2_crypto_km **pckm, const uint8_t *secret,
+                         size_t secretlen,
+                         const ngtcp2_crypto_aead_ctx *aead_ctx,
+                         const uint8_t *iv, size_t ivlen,
+                         const ngtcp2_mem *mem);
+
+/*
+ * ngtcp2_crypto_km_nocopy_new is similar to ngtcp2_crypto_km_new, but
+ * it does not copy secret, key and IV.
+ */
+int ngtcp2_crypto_km_nocopy_new(ngtcp2_crypto_km **pckm, size_t secretlen,
+                                size_t ivlen, const ngtcp2_mem *mem);
+
+void ngtcp2_crypto_km_del(ngtcp2_crypto_km *ckm, const ngtcp2_mem *mem);
+
+typedef struct ngtcp2_crypto_cc {
+  ngtcp2_crypto_aead aead;
+  ngtcp2_crypto_cipher hp;
+  ngtcp2_crypto_km *ckm;
+  ngtcp2_crypto_cipher_ctx hp_ctx;
+  ngtcp2_encrypt encrypt;
+  ngtcp2_decrypt decrypt;
+  ngtcp2_hp_mask hp_mask;
+} ngtcp2_crypto_cc;
+
+void ngtcp2_crypto_create_nonce(uint8_t *dest, const uint8_t *iv, size_t ivlen,
+                                int64_t pkt_num);
+
+/*
+ * ngtcp2_transport_params_copy_new makes a copy of |src|, and assigns
+ * it to |*pdest|.  If |src| is NULL, NULL is assigned to |*pdest|.
+ *
+ * Caller is responsible to call ngtcp2_transport_params_del to free
+ * the memory assigned to |*pdest|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGTCP2_ERR_NOMEM
+ *     Out of memory.
+ */
+int ngtcp2_transport_params_copy_new(ngtcp2_transport_params **pdest,
+                                     const ngtcp2_transport_params *src,
+                                     const ngtcp2_mem *mem);
+
+#endif /* NGTCP2_CRYPTO_H */