86 lines
2.4 KiB
C++
86 lines
2.4 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/rsa_key.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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#include <keymaster/km_openssl/rsa_operation.h>
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namespace keymaster {
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bool RsaKey::EvpToInternal(const EVP_PKEY* pkey) {
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rsa_key_.reset(EVP_PKEY_get1_RSA(const_cast<EVP_PKEY*>(pkey)));
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return rsa_key_.get() != nullptr;
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}
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EVP_PKEY_Ptr RsaKey::InternalToEvp() const {
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EVP_PKEY_Ptr pkey(EVP_PKEY_new());
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if (pkey.get() != nullptr) {
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if (EVP_PKEY_set1_RSA(pkey.get(), rsa_key_.get()) != 1) {
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return {};
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}
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}
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return pkey;
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}
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bool RsaKey::SupportedMode(keymaster_purpose_t purpose, keymaster_padding_t padding) {
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switch (purpose) {
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case KM_PURPOSE_ATTEST_KEY:
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return true;
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case KM_PURPOSE_SIGN:
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case KM_PURPOSE_VERIFY:
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return padding == KM_PAD_NONE || padding == KM_PAD_RSA_PSS ||
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padding == KM_PAD_RSA_PKCS1_1_5_SIGN;
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case KM_PURPOSE_ENCRYPT:
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case KM_PURPOSE_DECRYPT:
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case KM_PURPOSE_WRAP:
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return padding == KM_PAD_RSA_OAEP || padding == KM_PAD_RSA_PKCS1_1_5_ENCRYPT;
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case KM_PURPOSE_DERIVE_KEY:
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case KM_PURPOSE_AGREE_KEY:
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return false;
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};
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return false;
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}
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bool RsaKey::SupportedMode(keymaster_purpose_t purpose, keymaster_digest_t digest) {
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switch (purpose) {
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case KM_PURPOSE_ATTEST_KEY:
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return true;
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case KM_PURPOSE_SIGN:
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case KM_PURPOSE_VERIFY:
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return digest == KM_DIGEST_NONE || digest == KM_DIGEST_SHA_2_256;
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case KM_PURPOSE_ENCRYPT:
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case KM_PURPOSE_DECRYPT:
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case KM_PURPOSE_WRAP:
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/* Don't care */
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break;
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case KM_PURPOSE_DERIVE_KEY:
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case KM_PURPOSE_AGREE_KEY:
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return false;
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};
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return true;
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}
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} // namespace keymaster
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