1 /*
2 * Copyright 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 template <typename T, void (*F)(T*)> struct UniquePtrDeleter {
operatorUniquePtrDeleter18 void operator()(T* p) const { F(p); }
19 };
20
21 typedef UniquePtrDeleter<EVP_PKEY, EVP_PKEY_free> EVP_PKEY_Delete;
22
23 #define MAKE_OPENSSL_PTR_TYPE(type) \
24 typedef std::unique_ptr<type, UniquePtrDeleter<type, type##_free>> type##_Ptr;
25
26 MAKE_OPENSSL_PTR_TYPE(ASN1_OBJECT)
27 MAKE_OPENSSL_PTR_TYPE(EVP_PKEY)
28 MAKE_OPENSSL_PTR_TYPE(RSA)
29 MAKE_OPENSSL_PTR_TYPE(X509)
30 MAKE_OPENSSL_PTR_TYPE(BN_CTX)
31
32 typedef std::unique_ptr<BIGNUM, UniquePtrDeleter<BIGNUM, BN_free>> BIGNUM_Ptr;
33
openssl_digest(android::hardware::keymaster::V3_0::Digest digest)34 inline const EVP_MD* openssl_digest(android::hardware::keymaster::V3_0::Digest digest) {
35 switch (digest) {
36 case android::hardware::keymaster::V3_0::Digest::NONE:
37 return nullptr;
38 case android::hardware::keymaster::V3_0::Digest::MD5:
39 return EVP_md5();
40 case android::hardware::keymaster::V3_0::Digest::SHA1:
41 return EVP_sha1();
42 case android::hardware::keymaster::V3_0::Digest::SHA_2_224:
43 return EVP_sha224();
44 case android::hardware::keymaster::V3_0::Digest::SHA_2_256:
45 return EVP_sha256();
46 case android::hardware::keymaster::V3_0::Digest::SHA_2_384:
47 return EVP_sha384();
48 case android::hardware::keymaster::V3_0::Digest::SHA_2_512:
49 return EVP_sha512();
50 }
51 return nullptr;
52 }
53