1 files changed, 135 insertions, 0 deletions
diff --git a/crypto/rsa_private_key_openssl.cc b/crypto/rsa_private_key_openssl.cc
new file mode 100644
index 0000000..f39b718
--- /dev/null
+++ b/crypto/rsa_private_key_openssl.cc
@@ -0,0 +1,135 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "crypto/rsa_private_key.h"
+
+#include <openssl/evp.h>
+#include <openssl/pkcs12.h>
+#include <openssl/rsa.h>
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/stl_util-inl.h"
+#include "crypto/openssl_util.h"
+
+namespace crypto {
+
+namespace {
+
+// Function pointer definition, for injecting the required key export function
+// into ExportKey, below. The supplied function should export EVP_PKEY into
+// the supplied BIO, returning 1 on success or 0 on failure.
+typedef int (ExportFunction)(BIO*, EVP_PKEY*);
+
+// Helper to export |key| into |output| via the specified ExportFunction.
+bool ExportKey(EVP_PKEY* key,
+               ExportFunction export_fn,
+               std::vector<uint8>* output) {
+  if (!key)
+    return false;
+
+  OpenSSLErrStackTracer err_tracer(FROM_HERE);
+  ScopedOpenSSL<BIO, BIO_free_all> bio(BIO_new(BIO_s_mem()));
+
+  int res = export_fn(bio.get(), key);
+  if (!res)
+    return false;
+
+  char* data = NULL;
+  long len = BIO_get_mem_data(bio.get(), &data);
+  if (!data || len < 0)
+    return false;
+
+  STLAssignToVector(output, reinterpret_cast<const uint8*>(data), len);
+  return true;
+}
+
+}  // namespace
+
+// static
+RSAPrivateKey* RSAPrivateKey::Create(uint16 num_bits) {
+  OpenSSLErrStackTracer err_tracer(FROM_HERE);
+
+  ScopedOpenSSL<RSA, RSA_free> rsa_key(RSA_new());
+  ScopedOpenSSL<BIGNUM, BN_free> bn(BN_new());
+  if (!rsa_key.get() || !bn.get() || !BN_set_word(bn.get(), 65537L))
+    return NULL;
+
+  if (!RSA_generate_key_ex(rsa_key.get(), num_bits, bn.get(), NULL))
+    return NULL;
+
+  scoped_ptr<RSAPrivateKey> result(new RSAPrivateKey);
+  result->key_ = EVP_PKEY_new();
+  if (!result->key_ || !EVP_PKEY_set1_RSA(result->key_, rsa_key.get()))
+    return NULL;
+
+  return result.release();
+}
+
+// static
+RSAPrivateKey* RSAPrivateKey::CreateSensitive(uint16 num_bits) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+// static
+RSAPrivateKey* RSAPrivateKey::CreateFromPrivateKeyInfo(
+    const std::vector<uint8>& input) {
+  OpenSSLErrStackTracer err_tracer(FROM_HERE);
+
+  // BIO_new_mem_buf is not const aware, but it does not modify the buffer.
+  char* data = reinterpret_cast<char*>(const_cast<uint8*>(
+      vector_as_array(&input)));
+  ScopedOpenSSL<BIO, BIO_free_all> bio(BIO_new_mem_buf(data, input.size()));
+  if (!bio.get())
+    return NULL;
+
+  // Importing is a little more involved than exporting, as we must first
+  // PKCS#8 decode the input, and then import the EVP_PKEY from Private Key
+  // Info structure returned.
+  ScopedOpenSSL<PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_free> p8inf(
+      d2i_PKCS8_PRIV_KEY_INFO_bio(bio.get(), NULL));
+  if (!p8inf.get())
+    return NULL;
+
+  scoped_ptr<RSAPrivateKey> result(new RSAPrivateKey);
+  result->key_ = EVP_PKCS82PKEY(p8inf.get());
+  if (!result->key_)
+    return NULL;
+
+  return result.release();
+}
+
+// static
+RSAPrivateKey* RSAPrivateKey::CreateSensitiveFromPrivateKeyInfo(
+    const std::vector<uint8>& input) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+// static
+RSAPrivateKey* RSAPrivateKey::FindFromPublicKeyInfo(
+    const std::vector<uint8>& input) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+RSAPrivateKey::RSAPrivateKey()
+    : key_(NULL) {
+}
+
+RSAPrivateKey::~RSAPrivateKey() {
+  if (key_)
+    EVP_PKEY_free(key_);
+}
+
+bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) {
+  return ExportKey(key_, i2d_PKCS8PrivateKeyInfo_bio, output);
+}
+
+bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) {
+  return ExportKey(key_, i2d_PUBKEY_bio, output);
+}
+
+}  // namespace crypto