You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
3.6 KiB
100 lines
3.6 KiB
/* |
|
* Copyright 2014 The Android Open Source Project |
|
* |
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
|
* you may not use this file except in compliance with the License. |
|
* You may obtain a copy of the License at |
|
* |
|
* http://www.apache.org/licenses/LICENSE-2.0 |
|
* |
|
* Unless required by applicable law or agreed to in writing, software |
|
* distributed under the License is distributed on an "AS IS" BASIS, |
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
* See the License for the specific language governing permissions and |
|
* limitations under the License. |
|
*/ |
|
|
|
#ifndef SYSTEM_KEYMASTER_OPENSSL_UTILS_H_ |
|
#define SYSTEM_KEYMASTER_OPENSSL_UTILS_H_ |
|
|
|
#include <openssl/bn.h> |
|
#include <openssl/ec.h> |
|
#include <openssl/engine.h> |
|
#include <openssl/evp.h> |
|
#include <openssl/rsa.h> |
|
#include <openssl/x509.h> |
|
|
|
#include <keymaster/UniquePtr.h> |
|
|
|
#include <hardware/keymaster_defs.h> |
|
|
|
namespace keymaster { |
|
|
|
struct KeymasterKeyBlob; |
|
|
|
class EvpMdCtxCleaner { |
|
public: |
|
explicit EvpMdCtxCleaner(EVP_MD_CTX* ctx) : ctx_(ctx) {} |
|
~EvpMdCtxCleaner() { EVP_MD_CTX_cleanup(ctx_); } |
|
|
|
private: |
|
EVP_MD_CTX* ctx_; |
|
}; |
|
|
|
template <typename T, void (*FreeFunc)(T*)> struct OpenSslObjectDeleter { |
|
void operator()(T* p) { FreeFunc(p); } |
|
}; |
|
|
|
#define DEFINE_OPENSSL_OBJECT_POINTER(name) \ |
|
typedef OpenSslObjectDeleter<name, name##_free> name##_Delete; \ |
|
typedef UniquePtr<name, name##_Delete> name##_Ptr; |
|
|
|
DEFINE_OPENSSL_OBJECT_POINTER(ASN1_BIT_STRING) |
|
DEFINE_OPENSSL_OBJECT_POINTER(ASN1_INTEGER) |
|
DEFINE_OPENSSL_OBJECT_POINTER(ASN1_OBJECT) |
|
DEFINE_OPENSSL_OBJECT_POINTER(ASN1_OCTET_STRING) |
|
DEFINE_OPENSSL_OBJECT_POINTER(ASN1_TIME) |
|
DEFINE_OPENSSL_OBJECT_POINTER(BN_CTX) |
|
DEFINE_OPENSSL_OBJECT_POINTER(EC_GROUP) |
|
DEFINE_OPENSSL_OBJECT_POINTER(EC_KEY) |
|
DEFINE_OPENSSL_OBJECT_POINTER(EC_POINT) |
|
DEFINE_OPENSSL_OBJECT_POINTER(ENGINE) |
|
DEFINE_OPENSSL_OBJECT_POINTER(EVP_PKEY) |
|
DEFINE_OPENSSL_OBJECT_POINTER(PKCS8_PRIV_KEY_INFO) |
|
DEFINE_OPENSSL_OBJECT_POINTER(RSA) |
|
DEFINE_OPENSSL_OBJECT_POINTER(X509) |
|
DEFINE_OPENSSL_OBJECT_POINTER(X509_EXTENSION) |
|
DEFINE_OPENSSL_OBJECT_POINTER(X509_NAME) |
|
|
|
typedef OpenSslObjectDeleter<BIGNUM, BN_free> BIGNUM_Delete; |
|
typedef UniquePtr<BIGNUM, BIGNUM_Delete> BIGNUM_Ptr; |
|
|
|
keymaster_error_t ec_get_group_size(const EC_GROUP* group, size_t* key_size_bits); |
|
EC_GROUP* ec_get_group(keymaster_ec_curve_t curve); |
|
|
|
/** |
|
* Many OpenSSL APIs take ownership of an argument on success but don't free the argument on |
|
* failure. This means we need to tell our scoped pointers when we've transferred ownership, without |
|
* triggering a warning by not using the result of release(). |
|
*/ |
|
template <typename T, typename Delete_T> |
|
inline void release_because_ownership_transferred(UniquePtr<T, Delete_T>& p) { |
|
T* val __attribute__((unused)) = p.release(); |
|
} |
|
|
|
keymaster_error_t convert_pkcs8_blob_to_evp(const uint8_t* key_data, size_t key_length, |
|
keymaster_algorithm_t expected_algorithm, |
|
UniquePtr<EVP_PKEY, EVP_PKEY_Delete>* pkey); |
|
|
|
keymaster_error_t KeyMaterialToEvpKey(keymaster_key_format_t key_format, |
|
const KeymasterKeyBlob& key_material, |
|
keymaster_algorithm_t expected_algorithm, |
|
UniquePtr<EVP_PKEY, EVP_PKEY_Delete>* evp_pkey); |
|
|
|
keymaster_error_t EvpKeyToKeyMaterial(const EVP_PKEY* evp_pkey, KeymasterKeyBlob* key_blob); |
|
|
|
size_t ec_group_size_bits(EC_KEY* ec_key); |
|
|
|
} // namespace keymaster |
|
|
|
#endif // SYSTEM_KEYMASTER_OPENSSL_UTILS_H_
|
|
|