Update monet.

crypto/third_party/nss/secsign.cc

+/*
+ * Signature stuff.
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (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.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape security libraries.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1994-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Dr Vipul Gupta <vipul.gupta@sun.com>, Sun Microsystems Laboratories
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "crypto/third_party/nss/chromium-nss.h"
+
+#include <vector>
+
+#include <cryptohi.h>
+#include <pk11pub.h>
+#include <secerr.h>
+#include <sechash.h>
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "build/build_config.h"
+
+SECStatus DerSignData(PLArenaPool *arena,
+                      SECItem *result,
+                      SECItem *input,
+                      SECKEYPrivateKey *key,
+                      SECOidTag algo_id) {
+  if (key->keyType != ecKey) {
+    return SEC_DerSignData(arena, result, input->data, input->len, key,
+                           algo_id);
+  }
+
+  // NSS has a private function sec_DecodeSigAlg it uses to figure out the
+  // correct hash from the algorithm id.
+  HASH_HashType hash_type;
+  switch (algo_id) {
+    case SEC_OID_ANSIX962_ECDSA_SHA1_SIGNATURE:
+      hash_type = HASH_AlgSHA1;
+      break;
+#ifdef SHA224_LENGTH
+    case SEC_OID_ANSIX962_ECDSA_SHA224_SIGNATURE:
+      hash_type = HASH_AlgSHA224;
+      break;
+#endif
+    case SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE:
+      hash_type = HASH_AlgSHA256;
+      break;
+    case SEC_OID_ANSIX962_ECDSA_SHA384_SIGNATURE:
+      hash_type = HASH_AlgSHA384;
+      break;
+    case SEC_OID_ANSIX962_ECDSA_SHA512_SIGNATURE:
+      hash_type = HASH_AlgSHA512;
+      break;
+    default:
+      PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
+      return SECFailure;
+  }
+
+  // Hash the input.
+  std::vector<uint8> hash_data(HASH_ResultLen(hash_type));
+  SECStatus rv = HASH_HashBuf(
+      hash_type, &hash_data[0], input->data, input->len);
+  if (rv != SECSuccess)
+    return rv;
+  SECItem hash = {siBuffer, &hash_data[0], 
+                  static_cast<unsigned int>(hash_data.size())};
+
+  // Compute signature of hash.
+  int signature_len = PK11_SignatureLen(key);
+  std::vector<uint8> signature_data(signature_len);
+  SECItem sig = {siBuffer, &signature_data[0], 
+                 static_cast<unsigned int>(signature_len)};
+  rv = PK11_Sign(key, &sig, &hash);
+  if (rv != SECSuccess)
+    return rv;
+
+  CERTSignedData sd;
+  PORT_Memset(&sd, 0, sizeof(sd));
+  // Fill in tbsCertificate.
+  sd.data.data = (unsigned char*) input->data;
+  sd.data.len = input->len;
+
+  // Fill in signatureAlgorithm.
+  rv = SECOID_SetAlgorithmID(arena, &sd.signatureAlgorithm, algo_id, 0);
+  if (rv != SECSuccess)
+    return rv;
+
+  // Fill in signatureValue.
+  rv = DSAU_EncodeDerSigWithLen(&sd.signature, &sig, sig.len);
+  if (rv != SECSuccess)
+    return rv;
+  sd.signature.len <<=  3;  // Convert to bit string.
+
+  // DER encode the signed data object.
+  void* encode_result = SEC_ASN1EncodeItem(
+      arena, result, &sd, SEC_ASN1_GET(CERT_SignedDataTemplate));
+
+  PORT_Free(sd.signature.data);
+
+  return encode_result ? SECSuccess : SECFailure;
+}