58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
/*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <keymaster/km_openssl/asymmetric_key.h>
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#include <openssl/asn1.h>
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#include <openssl/stack.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include <keymaster/android_keymaster_utils.h>
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#include <keymaster/keymaster_context.h>
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#include <keymaster/km_openssl/openssl_err.h>
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#include <keymaster/km_openssl/openssl_utils.h>
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namespace keymaster {
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keymaster_error_t AsymmetricKey::formatted_key_material(keymaster_key_format_t format,
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UniquePtr<uint8_t[]>* material,
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size_t* size) const {
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if (format != KM_KEY_FORMAT_X509) return KM_ERROR_UNSUPPORTED_KEY_FORMAT;
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if (material == nullptr || size == nullptr) return KM_ERROR_OUTPUT_PARAMETER_NULL;
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EVP_PKEY_Ptr pkey(InternalToEvp());
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if (pkey.get() == nullptr) return TranslateLastOpenSslError();
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int key_data_length = i2d_PUBKEY(pkey.get(), nullptr);
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if (key_data_length <= 0) return TranslateLastOpenSslError();
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material->reset(new (std::nothrow) uint8_t[key_data_length]);
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if (material->get() == nullptr) return KM_ERROR_MEMORY_ALLOCATION_FAILED;
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uint8_t* tmp = material->get();
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if (i2d_PUBKEY(pkey.get(), &tmp) != key_data_length) {
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material->reset();
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return TranslateLastOpenSslError();
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}
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*size = key_data_length;
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return KM_ERROR_OK;
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}
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} // namespace keymaster
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