1 /*
2 * Copyright (C) 2008-2009 Torch Mobile Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #include "config.h"
21 #include "SSLKeyGenerator.h"
22
23 #include "Base64.h"
24 #include <wtf/text/CString.h>
25
26 #include <windows.h>
27 #include <wincrypt.h>
28
29 namespace WebCore {
30
31 void WebCore::getSupportedKeySizes(Vector<String>& v)
32 {
33 v.append("High Grade");
34 v.append("Medium Grade");
35 }
36
37 String WebCore::signedPublicKeyAndChallengeString(unsigned index, const String& challenge, const KURL& url)
38 {
39 String keyString;
40
41 HCRYPTPROV hContext = 0;
42 HCRYPTKEY hKey = 0;
43 PCERT_PUBLIC_KEY_INFO pPubInfo = 0;
44
45 // Try to delete it if it exists already
46 CryptAcquireContext(&hContext, _T("keygen_container"), MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
47
48 do {
49 if (!CryptAcquireContext(&hContext, _T("keygen_container"), MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET))
50 break;
51
52 DWORD dwPubInfoLength = 0;
53 if (!CryptGenKey(hContext, AT_KEYEXCHANGE, 0, &hKey) || !CryptExportPublicKeyInfo(hContext, AT_KEYEXCHANGE, X509_ASN_ENCODING, 0, &dwPubInfoLength))
54 break;
55
56 // Use malloc instead of new, because malloc guarantees to return a pointer aligned for all data types.
57 pPubInfo = reinterpret_cast<PCERT_PUBLIC_KEY_INFO>(fastMalloc(dwPubInfoLength));
58
59 if (!CryptExportPublicKeyInfo(hContext, AT_KEYEXCHANGE, X509_ASN_ENCODING, pPubInfo, &dwPubInfoLength))
60 break;
61
62 CERT_KEYGEN_REQUEST_INFO requestInfo = { 0 };
63 requestInfo.dwVersion = CERT_KEYGEN_REQUEST_V1;
64 requestInfo.pwszChallengeString = L"";
65 requestInfo.SubjectPublicKeyInfo = *pPubInfo;
66
67 String localChallenge = challenge;
68
69 // Windows API won't write to our buffer, although it's not declared with const.
70 requestInfo.pwszChallengeString = const_cast<wchar_t*>(localChallenge.charactersWithNullTermination());
71
72 CRYPT_ALGORITHM_IDENTIFIER signAlgo = { 0 };
73 signAlgo.pszObjId = szOID_RSA_SHA1RSA;
74
75 DWORD dwEncodedLength;
76 if (!CryptSignAndEncodeCertificate(hContext, AT_KEYEXCHANGE, X509_ASN_ENCODING, X509_KEYGEN_REQUEST_TO_BE_SIGNED, &requestInfo, &signAlgo, 0, 0, &dwEncodedLength))
77 break;
78
79 Vector<char> binary(dwEncodedLength);
80 if (!CryptSignAndEncodeCertificate(hContext, AT_KEYEXCHANGE, X509_ASN_ENCODING, X509_KEYGEN_REQUEST_TO_BE_SIGNED, &requestInfo, &signAlgo, 0, reinterpret_cast<LPBYTE>(binary.data()), &dwEncodedLength))
81 break;
82
83 keyString = base64Encode(binary);
84 } while(0);
85
86 if (pPubInfo)
87 fastFree(pPubInfo);
88
89 if (hKey)
90 CryptDestroyKey(hKey);
91
92 if (hContext)
93 CryptReleaseContext(hContext, 0);
94
95 return keyString;
96 }
97
98 } // namespace WebCore