1  /***********************************************************************
 2   * Copyright (c) 2013, 2014 Pieter Wuille                              *
 3   * Distributed under the MIT software license, see the accompanying    *
 4   * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
 5   ***********************************************************************/
 6  
 7  #ifndef SECP256K1_ECKEY_H
 8  #define SECP256K1_ECKEY_H
 9  
10  #include <stddef.h>
11  
12  #include "group.h"
13  #include "scalar.h"
14  #include "ecmult.h"
15  #include "ecmult_gen.h"
16  
17  static int secp256k1_eckey_pubkey_parse(secp256k1_ge *elem, const unsigned char *pub, size_t size);
18  /** Serialize a group element (that is not allowed to be infinity) to a compressed public key (33 bytes). */
19  static void secp256k1_eckey_pubkey_serialize33(secp256k1_ge *elem, unsigned char *pub33);
20  /** Serialize a group element (that is not allowed to be infinity) to an uncompressed public key (65 bytes). */
21  static void secp256k1_eckey_pubkey_serialize65(secp256k1_ge *elem, unsigned char *pub65);
22  
23  static int secp256k1_eckey_privkey_tweak_add(secp256k1_scalar *key, const secp256k1_scalar *tweak);
24  static int secp256k1_eckey_pubkey_tweak_add(secp256k1_ge *key, const secp256k1_scalar *tweak);
25  static int secp256k1_eckey_privkey_tweak_mul(secp256k1_scalar *key, const secp256k1_scalar *tweak);
26  static int secp256k1_eckey_pubkey_tweak_mul(secp256k1_ge *key, const secp256k1_scalar *tweak);
27  
28  #endif /* SECP256K1_ECKEY_H */