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      1 /*
      2  * Copyright (C) 2008 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 #ifndef _RECOVERY_VERIFIER_H
     18 #define _RECOVERY_VERIFIER_H
     19 
     20 #include "mincrypt/p256.h"
     21 #include "mincrypt/rsa.h"
     22 
     23 typedef struct {
     24     p256_int x;
     25     p256_int y;
     26 } ECPublicKey;
     27 
     28 typedef struct {
     29     typedef enum {
     30         RSA,
     31         EC,
     32     } KeyType;
     33 
     34     int hash_len;  // SHA_DIGEST_SIZE (SHA-1) or SHA256_DIGEST_SIZE (SHA-256)
     35     KeyType key_type;
     36     RSAPublicKey* rsa;
     37     ECPublicKey* ec;
     38 } Certificate;
     39 
     40 /* addr and length define a an update package file that has been
     41  * loaded (or mmap'ed, or whatever) into memory.  Verify that the file
     42  * is signed and the signature matches one of the given keys.  Return
     43  * one of the constants below.
     44  */
     45 int verify_file(unsigned char* addr, size_t length,
     46                 const Certificate *pKeys, unsigned int numKeys);
     47 
     48 Certificate* load_keys(const char* filename, int* numKeys);
     49 
     50 #define VERIFY_SUCCESS        0
     51 #define VERIFY_FAILURE        1
     52 
     53 #endif  /* _RECOVERY_VERIFIER_H */
     54