quic: integrate vpp crypto api for quic packets encryption

Type: feature

Change-Id: I740f15a5ef959d31e94e59d652aa9f691db1f289
Signed-off-by: Mathias Raoul <mathias.raoul@gmail.com>

1 files changed, 336 insertions, 0 deletions

diff --git a/src/plugins/quic/quic_crypto.c b/src/plugins/quic/quic_crypto.c
new file mode 100644
index 00000000000..6c198960c24
--- /dev/null
+++ b/src/plugins/quic/quic_crypto.c
@@ -0,0 +1,336 @@
+/*
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <quic/quic_crypto.h>
+#include <quic/quic.h>
+
+#include <vnet/crypto/crypto.h>
+
+#include <picotls/openssl.h>
+#include <quicly.h>
+
+typedef void (*quicly_do_transform_fn) (ptls_cipher_context_t *, void *,
+					const void *, size_t);
+
+struct cipher_context_t
+{
+  ptls_cipher_context_t super;
+  vnet_crypto_op_t op;
+  u32 key_index;
+};
+
+struct aead_crypto_context_t
+{
+  ptls_aead_context_t super;
+  vnet_crypto_op_t op;
+  u32 key_index;
+};
+
+vnet_crypto_main_t *cm = &crypto_main;
+
+static void
+vpp_crypto_cipher_do_init (ptls_cipher_context_t * _ctx, const void *iv)
+{
+  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
+
+  vnet_crypto_op_id_t id;
+  if (!strcmp (ctx->super.algo->name, "AES128-CTR"))
+    {
+      id = VNET_CRYPTO_OP_AES_128_CTR_ENC;
+    }
+  else if (!strcmp (ctx->super.algo->name, "AES256-CTR"))
+    {
+      id = VNET_CRYPTO_OP_AES_256_CTR_ENC;
+    }
+  else
+    {
+      QUIC_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__,
+		_ctx->algo->name);
+      assert (0);
+    }
+
+  vnet_crypto_op_init (&ctx->op, id);
+  ctx->op.iv = (u8 *) iv;
+  ctx->op.key_index = ctx->key_index;
+}
+
+static void
+vpp_crypto_cipher_dispose (ptls_cipher_context_t * _ctx)
+{
+  /* Do nothing */
+}
+
+static void
+vpp_crypto_cipher_encrypt (ptls_cipher_context_t * _ctx, void *output,
+			   const void *input, size_t _len)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
+
+  ctx->op.src = (u8 *) input;
+  ctx->op.dst = output;
+  ctx->op.len = _len;
+
+  vnet_crypto_process_ops (vm, &ctx->op, 1);
+}
+
+static int
+vpp_crypto_cipher_setup_crypto (ptls_cipher_context_t * _ctx, int is_enc,
+				const void *key, const EVP_CIPHER * cipher,
+				quicly_do_transform_fn do_transform)
+{
+  struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx;
+
+  ctx->super.do_dispose = vpp_crypto_cipher_dispose;
+  ctx->super.do_init = vpp_crypto_cipher_do_init;
+  ctx->super.do_transform = do_transform;
+
+  vlib_main_t *vm = vlib_get_main ();
+  vnet_crypto_alg_t algo;
+  if (!strcmp (ctx->super.algo->name, "AES128-CTR"))
+    {
+      algo = VNET_CRYPTO_ALG_AES_128_CTR;
+    }
+  else if (!strcmp (ctx->super.algo->name, "AES256-CTR"))
+    {
+      algo = VNET_CRYPTO_ALG_AES_256_CTR;
+    }
+  else
+    {
+      QUIC_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__,
+		_ctx->algo->name);
+      assert (0);
+    }
+
+  ctx->key_index = vnet_crypto_key_add (vm, algo,
+					(u8 *) key, _ctx->algo->key_size);
+
+  return 0;
+}
+
+static int
+aes128ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc,
+			const void *key)
+{
+  return vpp_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_128_ctr (),
+					 vpp_crypto_cipher_encrypt);
+}
+
+static int
+aes256ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc,
+			const void *key)
+{
+  return vpp_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_256_ctr (),
+					 vpp_crypto_cipher_encrypt);
+}
+
+size_t
+vpp_crypto_aead_encrypt (ptls_aead_context_t * _ctx, void *output,
+			 const void *input, size_t inlen, uint64_t seq,
+			 const void *iv, const void *aad, size_t aadlen)
+{
+  QUIC_DBG (1, "[quic] %s", __FUNCTION__);
+
+  vlib_main_t *vm = vlib_get_main ();
+  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
+
+  vnet_crypto_op_id_t id;
+  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
+    {
+      id = VNET_CRYPTO_OP_AES_128_GCM_ENC;
+    }
+  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
+    {
+      id = VNET_CRYPTO_OP_AES_256_GCM_ENC;
+    }
+  else
+    {
+      assert (0);
+    }
+
+  vnet_crypto_op_init (&ctx->op, id);
+  ctx->op.aad = (u8 *) aad;
+  ctx->op.aad_len = aadlen;
+  ctx->op.iv = (u8 *) iv;
+
+  ctx->op.src = (u8 *) input;
+  ctx->op.dst = output;
+  ctx->op.key_index = ctx->key_index;
+  ctx->op.len = inlen;
+
+  ctx->op.tag_len = ctx->super.algo->tag_size;
+  ctx->op.tag = ctx->op.src + inlen;
+
+  vnet_crypto_process_ops (vm, &ctx->op, 1);
+
+  return ctx->op.len + ctx->op.tag_len;
+}
+
+size_t
+vpp_crypto_aead_decrypt (ptls_aead_context_t * _ctx, void *_output,
+			 const void *input, size_t inlen, const void *iv,
+			 const void *aad, size_t aadlen)
+{
+  QUIC_DBG (1, "[quic] %s", __FUNCTION__);
+
+  vlib_main_t *vm = vlib_get_main ();
+  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
+
+  vnet_crypto_op_id_t id;
+  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
+    {
+      id = VNET_CRYPTO_OP_AES_128_GCM_DEC;
+    }
+  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
+    {
+      id = VNET_CRYPTO_OP_AES_256_GCM_DEC;
+    }
+  else
+    {
+      assert (0);
+    }
+
+  vnet_crypto_op_init (&ctx->op, id);
+  ctx->op.aad = (u8 *) aad;
+  ctx->op.aad_len = aadlen;
+  ctx->op.iv = (u8 *) iv;
+
+  ctx->op.src = (u8 *) input;
+  ctx->op.dst = _output;
+  ctx->op.key_index = ctx->key_index;
+  ctx->op.len = inlen - ctx->super.algo->tag_size;
+
+  ctx->op.tag_len = ctx->super.algo->tag_size;
+  ctx->op.tag = ctx->op.src + ctx->op.len;
+
+  vnet_crypto_process_ops (vm, &ctx->op, 1);
+
+  return ctx->op.len;
+}
+
+static void
+vpp_crypto_aead_dispose_crypto (ptls_aead_context_t * _ctx)
+{
+  QUIC_DBG (1, "[quic] %s", __FUNCTION__);
+}
+
+static int
+vpp_crypto_aead_setup_crypto (ptls_aead_context_t * _ctx, int is_enc,
+			      const void *key, const EVP_CIPHER * cipher)
+{
+  QUIC_DBG (1, "%s, algo : ", __FUNCTION__, _ctx->algo->name);
+
+  vlib_main_t *vm = vlib_get_main ();
+  struct aead_crypto_context_t *ctx = (struct aead_crypto_context_t *) _ctx;
+
+  vnet_crypto_alg_t algo;
+  if (!strcmp (ctx->super.algo->name, "AES128-GCM"))
+    {
+      algo = VNET_CRYPTO_ALG_AES_128_GCM;
+    }
+  else if (!strcmp (ctx->super.algo->name, "AES256-GCM"))
+    {
+      algo = VNET_CRYPTO_ALG_AES_256_GCM;
+    }
+  else
+    {
+      QUIC_DBG (1, "%s, algo : ", __FUNCTION__, _ctx->algo->name);
+      assert (0);
+    }
+
+  ctx->super.do_decrypt = vpp_crypto_aead_decrypt;
+  ctx->super.do_encrypt = vpp_crypto_aead_encrypt;
+  ctx->super.dispose_crypto = vpp_crypto_aead_dispose_crypto;
+
+  ctx->key_index = vnet_crypto_key_add (vm, algo,
+					(u8 *) key, _ctx->algo->key_size);
+
+  return 0;
+}
+
+static int
+vpp_crypto_aead_aes128gcm_setup_crypto (ptls_aead_context_t * ctx, int is_enc,
+					const void *key)
+{
+  return vpp_crypto_aead_setup_crypto (ctx, is_enc, key, EVP_aes_128_gcm ());
+}
+
+static int
+vpp_crypto_aead_aes256gcm_setup_crypto (ptls_aead_context_t * ctx, int is_enc,
+					const void *key)
+{
+  return vpp_crypto_aead_setup_crypto (ctx, is_enc, key, EVP_aes_256_gcm ());
+}
+
+ptls_cipher_algorithm_t vpp_crypto_aes128ctr = { "AES128-CTR",
+  PTLS_AES128_KEY_SIZE,
+  1, PTLS_AES_IV_SIZE,
+  sizeof (struct cipher_context_t),
+  aes128ctr_setup_crypto
+};
+
+ptls_cipher_algorithm_t vpp_crypto_aes256ctr = { "AES256-CTR",
+  PTLS_AES256_KEY_SIZE,
+  1 /* block size */ ,
+  PTLS_AES_IV_SIZE,
+  sizeof (struct cipher_context_t),
+  aes256ctr_setup_crypto
+};
+
+ptls_aead_algorithm_t vpp_crypto_aes128gcm = { "AES128-GCM",
+  &vpp_crypto_aes128ctr,
+  NULL,
+  PTLS_AES128_KEY_SIZE,
+  PTLS_AESGCM_IV_SIZE,
+  PTLS_AESGCM_TAG_SIZE,
+  sizeof (struct aead_crypto_context_t),
+  vpp_crypto_aead_aes128gcm_setup_crypto
+};
+
+ptls_aead_algorithm_t vpp_crypto_aes256gcm = { "AES256-GCM",
+  &vpp_crypto_aes256ctr,
+  NULL,
+  PTLS_AES256_KEY_SIZE,
+  PTLS_AESGCM_IV_SIZE,
+  PTLS_AESGCM_TAG_SIZE,
+  sizeof (struct aead_crypto_context_t),
+  vpp_crypto_aead_aes256gcm_setup_crypto
+};
+
+ptls_cipher_suite_t vpp_crypto_aes128gcmsha256 =
+  { PTLS_CIPHER_SUITE_AES_128_GCM_SHA256,
+  &vpp_crypto_aes128gcm,
+  &ptls_openssl_sha256
+};
+
+ptls_cipher_suite_t vpp_crypto_aes256gcmsha384 =
+  { PTLS_CIPHER_SUITE_AES_256_GCM_SHA384,
+  &vpp_crypto_aes256gcm,
+  &ptls_openssl_sha384
+};
+
+ptls_cipher_suite_t *vpp_crypto_cipher_suites[] =
+  { &vpp_crypto_aes256gcmsha384,
+  &vpp_crypto_aes128gcmsha256,
+  NULL
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */