Bitcoin ABC  0.22.12
P2P Digital Currency
hmac_sha256.h
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1 // Copyright (c) 2014 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #ifndef BITCOIN_CRYPTO_HMAC_SHA256_H
6 #define BITCOIN_CRYPTO_HMAC_SHA256_H
7 
8 #include <crypto/sha256.h>
9 
10 #include <cstdint>
11 #include <cstdlib>
12 
14 class CHMAC_SHA256 {
15 private:
18 
19 public:
20  static const size_t OUTPUT_SIZE = 32;
21 
22  CHMAC_SHA256(const uint8_t *key, size_t keylen);
23  CHMAC_SHA256 &Write(const uint8_t *data, size_t len) {
24  inner.Write(data, len);
25  return *this;
26  }
27  void Finalize(uint8_t hash[OUTPUT_SIZE]);
28 };
29 
30 #endif // BITCOIN_CRYPTO_HMAC_SHA256_H
CHMAC_SHA256 & Write(const uint8_t *data, size_t len)
Definition: hmac_sha256.h:23
A hasher class for HMAC-SHA-256.
Definition: hmac_sha256.h:14
CHMAC_SHA256(const uint8_t *key, size_t keylen)
Definition: hmac_sha256.cpp:9
CSHA256 inner
Definition: hmac_sha256.h:17
CSHA256 outer
Definition: hmac_sha256.h:16
static const size_t OUTPUT_SIZE
Definition: hmac_sha256.h:20
CSHA256 & Write(const uint8_t *data, size_t len)
Definition: sha256.cpp:819
A hasher class for SHA-256.
Definition: sha256.h:13
void Finalize(uint8_t hash[OUTPUT_SIZE])
Definition: hmac_sha256.cpp:30