BoringSSL as optional cryptobackend for ngtcp2

PR добавляет возможность использовать BoringSSL в ngtcp2 в качестве криптобиблиотеки. Для проектов в Аркадии, уже зависящих от ngtcp2, добавлена явная зависимость от слоя абстракции quictls (сейчас в транке ngtcp2 собирается с quictls).
commit_hash:3d6607abecfcff2157859acbdd18f9d0345ac485

1 files changed, 178 insertions, 0 deletions

diff --git a/contrib/restricted/google/boringssl/crypto/x509/algorithm.c b/contrib/restricted/google/boringssl/crypto/x509/algorithm.c
new file mode 100644
index 00000000000..35d1ae0e744
--- /dev/null
+++ b/contrib/restricted/google/boringssl/crypto/x509/algorithm.c
@@ -0,0 +1,178 @@
+/* Copyright (C) 1995-1998 Eric Young ([email protected])
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young ([email protected]).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson ([email protected]).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young ([email protected])"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson ([email protected])"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <contrib/restricted/google/boringssl/include/openssl/x509.h>
+
+#include <contrib/restricted/google/boringssl/include/openssl/asn1.h>
+#include <contrib/restricted/google/boringssl/include/openssl/digest.h>
+#include <contrib/restricted/google/boringssl/include/openssl/err.h>
+#include <contrib/restricted/google/boringssl/include/openssl/evp.h>
+#include <contrib/restricted/google/boringssl/include/openssl/obj.h>
+
+#include "internal.h"
+
+// Restrict the digests that are allowed in X509 certificates
+static int x509_digest_nid_ok(const int digest_nid) {
+  switch (digest_nid) {
+    case NID_md4:
+    case NID_md5:
+      return 0;
+  }
+  return 1;
+}
+
+int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
+  EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+  if (pkey == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
+    int pad_mode;
+    if (!EVP_PKEY_CTX_get_rsa_padding(ctx->pctx, &pad_mode)) {
+      return 0;
+    }
+    // RSA-PSS has special signature algorithm logic.
+    if (pad_mode == RSA_PKCS1_PSS_PADDING) {
+      return x509_rsa_ctx_to_pss(ctx, algor);
+    }
+  }
+
+  if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519) {
+    return X509_ALGOR_set0(algor, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
+  }
+
+  // Default behavior: look up the OID for the algorithm/hash pair and encode
+  // that.
+  const EVP_MD *digest = EVP_MD_CTX_md(ctx);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
+    return 0;
+  }
+
+  const int digest_nid = EVP_MD_type(digest);
+  int sign_nid;
+  if (!x509_digest_nid_ok(digest_nid) ||
+      !OBJ_find_sigid_by_algs(&sign_nid, digest_nid, EVP_PKEY_id(pkey))) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+    return 0;
+  }
+
+  // RSA signature algorithms include an explicit NULL parameter. Others omit
+  // it.
+  int paramtype =
+      (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) ? V_ASN1_NULL : V_ASN1_UNDEF;
+  return X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL);
+}
+
+int x509_digest_verify_init(EVP_MD_CTX *ctx, const X509_ALGOR *sigalg,
+                            EVP_PKEY *pkey) {
+  // Convert the signature OID into digest and public key OIDs.
+  int sigalg_nid = OBJ_obj2nid(sigalg->algorithm);
+  int digest_nid, pkey_nid;
+  if (!OBJ_find_sigid_algs(sigalg_nid, &digest_nid, &pkey_nid)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  // Check the public key OID matches the public key type.
+  if (pkey_nid != EVP_PKEY_id(pkey)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE);
+    return 0;
+  }
+
+  // Check for permitted digest algorithms
+  if (!x509_digest_nid_ok(digest_nid)) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+    return 0;
+  }
+
+  // NID_undef signals that there are custom parameters to set.
+  if (digest_nid == NID_undef) {
+    if (sigalg_nid == NID_rsassaPss) {
+      return x509_rsa_pss_to_ctx(ctx, sigalg, pkey);
+    }
+    if (sigalg_nid == NID_ED25519) {
+      if (sigalg->parameter != NULL) {
+        OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER);
+        return 0;
+      }
+      return EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey);
+    }
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
+    return 0;
+  }
+
+  // The parameter should be an explicit NULL for RSA and omitted for ECDSA. For
+  // compatibility, we allow either for both algorithms. See b/167375496.
+  //
+  // TODO(davidben): Chromium's verifier allows both forms for RSA, but enforces
+  // ECDSA more strictly. Align with Chromium and add a flag for b/167375496.
+  if (sigalg->parameter != NULL && sigalg->parameter->type != V_ASN1_NULL) {
+    OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER);
+    return 0;
+  }
+
+  // Otherwise, initialize with the digest from the OID.
+  const EVP_MD *digest = EVP_get_digestbynid(digest_nid);
+  if (digest == NULL) {
+    OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
+    return 0;
+  }
+
+  return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey);
+}