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 { 18 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 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
