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/* Copyright 2013-2017 IBM Corp.
*
* 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 __CVC_H
#define __CVC_H
enum cvc_service_id {
CVC_SHA512_SERVICE,
CVC_VERIFY_SERVICE,
};
void cvc_update_reserved_memory_phandle(void);
int cvc_init(void);
/************************************************************************
* Wrappers for the services provided by the Container-Verification-Code
************************************************************************/
/*
* call_cvc_verify - Call the CVC-verify service to verify the container fetched
* from PNOR.
*
* @buf - buffer that has the firmware component to be verified
* @size - number of bytes allocated for @buf
* @hw_key_hash - hash of the three harware public keys trusted by the platform
* owner
* @hw_key_hash_size - number of bytes allocated for @hw_key_hash
* @log - hexadecimal returned by the CVC. In case of verification failure, it
* indicates what checking failed
*
*/
int call_cvc_verify(void *buf, size_t size, const void *hw_key_hash,
size_t hw_key_hash_size, uint64_t *log);
/*
* call_cvc_sha512 - Call the CVC-sha512 service to calculate a sha512 hash.
*
* @data - buffer that has data to be hashed
* @data_len - number of bytes from @data to be considered in the hash
* calculation
* @digest - buffer to store the calculated hash
* @digest_size - number of bytes allocated for @digest
*
*/
int call_cvc_sha512(const uint8_t *data, size_t data_len, uint8_t *digest,
size_t digest_size);
#endif /* __CVC_H */
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