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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "crypto/rsa_private_key.h" |
| 6 |
| 7 #include <cryptohi.h> |
| 8 #include <keyhi.h> |
| 9 #include <pk11pub.h> |
| 10 |
| 11 #include <list> |
| 12 |
| 13 #include "base/debug/leak_annotations.h" |
| 14 #include "base/logging.h" |
| 15 #include "base/memory/scoped_ptr.h" |
| 16 #include "base/strings/string_util.h" |
| 17 #include "crypto/nss_key_util.h" |
| 18 #include "crypto/nss_util.h" |
| 19 #include "crypto/scoped_nss_types.h" |
| 20 |
| 21 // TODO(rafaelw): Consider using NSS's ASN.1 encoder. |
| 22 namespace { |
| 23 |
| 24 static bool ReadAttribute(SECKEYPrivateKey* key, |
| 25 CK_ATTRIBUTE_TYPE type, |
| 26 std::vector<uint8>* output) { |
| 27 SECItem item; |
| 28 SECStatus rv; |
| 29 rv = PK11_ReadRawAttribute(PK11_TypePrivKey, key, type, &item); |
| 30 if (rv != SECSuccess) { |
| 31 NOTREACHED(); |
| 32 return false; |
| 33 } |
| 34 |
| 35 output->assign(item.data, item.data + item.len); |
| 36 SECITEM_FreeItem(&item, PR_FALSE); |
| 37 return true; |
| 38 } |
| 39 |
| 40 } // namespace |
| 41 |
| 42 namespace crypto { |
| 43 |
| 44 RSAPrivateKey::~RSAPrivateKey() { |
| 45 if (key_) |
| 46 SECKEY_DestroyPrivateKey(key_); |
| 47 if (public_key_) |
| 48 SECKEY_DestroyPublicKey(public_key_); |
| 49 } |
| 50 |
| 51 // static |
| 52 RSAPrivateKey* RSAPrivateKey::Create(uint16 num_bits) { |
| 53 EnsureNSSInit(); |
| 54 |
| 55 ScopedPK11Slot slot(PK11_GetInternalSlot()); |
| 56 if (!slot) { |
| 57 NOTREACHED(); |
| 58 return nullptr; |
| 59 } |
| 60 |
| 61 ScopedSECKEYPublicKey public_key; |
| 62 ScopedSECKEYPrivateKey private_key; |
| 63 if (!GenerateRSAKeyPairNSS(slot.get(), num_bits, false /* not permanent */, |
| 64 &public_key, &private_key)) { |
| 65 return nullptr; |
| 66 } |
| 67 |
| 68 RSAPrivateKey* rsa_key = new RSAPrivateKey; |
| 69 rsa_key->public_key_ = public_key.release(); |
| 70 rsa_key->key_ = private_key.release(); |
| 71 return rsa_key; |
| 72 } |
| 73 |
| 74 // static |
| 75 RSAPrivateKey* RSAPrivateKey::CreateFromPrivateKeyInfo( |
| 76 const std::vector<uint8>& input) { |
| 77 EnsureNSSInit(); |
| 78 |
| 79 ScopedPK11Slot slot(PK11_GetInternalSlot()); |
| 80 if (!slot) { |
| 81 NOTREACHED(); |
| 82 return nullptr; |
| 83 } |
| 84 ScopedSECKEYPrivateKey key(ImportNSSKeyFromPrivateKeyInfo( |
| 85 slot.get(), input, false /* not permanent */)); |
| 86 if (!key || SECKEY_GetPrivateKeyType(key.get()) != rsaKey) |
| 87 return nullptr; |
| 88 return RSAPrivateKey::CreateFromKey(key.get()); |
| 89 } |
| 90 |
| 91 // static |
| 92 RSAPrivateKey* RSAPrivateKey::CreateFromKey(SECKEYPrivateKey* key) { |
| 93 DCHECK(key); |
| 94 if (SECKEY_GetPrivateKeyType(key) != rsaKey) |
| 95 return NULL; |
| 96 RSAPrivateKey* copy = new RSAPrivateKey(); |
| 97 copy->key_ = SECKEY_CopyPrivateKey(key); |
| 98 copy->public_key_ = SECKEY_ConvertToPublicKey(key); |
| 99 if (!copy->key_ || !copy->public_key_) { |
| 100 NOTREACHED(); |
| 101 delete copy; |
| 102 return NULL; |
| 103 } |
| 104 return copy; |
| 105 } |
| 106 |
| 107 RSAPrivateKey* RSAPrivateKey::Copy() const { |
| 108 RSAPrivateKey* copy = new RSAPrivateKey(); |
| 109 copy->key_ = SECKEY_CopyPrivateKey(key_); |
| 110 copy->public_key_ = SECKEY_CopyPublicKey(public_key_); |
| 111 return copy; |
| 112 } |
| 113 |
| 114 bool RSAPrivateKey::ExportPrivateKey(std::vector<uint8>* output) const { |
| 115 PrivateKeyInfoCodec private_key_info(true); |
| 116 |
| 117 // Manually read the component attributes of the private key and build up |
| 118 // the PrivateKeyInfo. |
| 119 if (!ReadAttribute(key_, CKA_MODULUS, private_key_info.modulus()) || |
| 120 !ReadAttribute(key_, CKA_PUBLIC_EXPONENT, |
| 121 private_key_info.public_exponent()) || |
| 122 !ReadAttribute(key_, CKA_PRIVATE_EXPONENT, |
| 123 private_key_info.private_exponent()) || |
| 124 !ReadAttribute(key_, CKA_PRIME_1, private_key_info.prime1()) || |
| 125 !ReadAttribute(key_, CKA_PRIME_2, private_key_info.prime2()) || |
| 126 !ReadAttribute(key_, CKA_EXPONENT_1, private_key_info.exponent1()) || |
| 127 !ReadAttribute(key_, CKA_EXPONENT_2, private_key_info.exponent2()) || |
| 128 !ReadAttribute(key_, CKA_COEFFICIENT, private_key_info.coefficient())) { |
| 129 NOTREACHED(); |
| 130 return false; |
| 131 } |
| 132 |
| 133 return private_key_info.Export(output); |
| 134 } |
| 135 |
| 136 bool RSAPrivateKey::ExportPublicKey(std::vector<uint8>* output) const { |
| 137 ScopedSECItem der_pubkey(SECKEY_EncodeDERSubjectPublicKeyInfo(public_key_)); |
| 138 if (!der_pubkey.get()) { |
| 139 NOTREACHED(); |
| 140 return false; |
| 141 } |
| 142 |
| 143 output->assign(der_pubkey->data, der_pubkey->data + der_pubkey->len); |
| 144 return true; |
| 145 } |
| 146 |
| 147 RSAPrivateKey::RSAPrivateKey() : key_(NULL), public_key_(NULL) { |
| 148 EnsureNSSInit(); |
| 149 } |
| 150 |
| 151 } // namespace crypto |
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