Bitcoin Core  0.19.99
P2P Digital Currency
hkdf_sha256_32.h
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1 // Copyright (c) 2018 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_HKDF_SHA256_32_H
6 #define BITCOIN_CRYPTO_HKDF_SHA256_32_H
7 
8 #include <crypto/hmac_sha256.h>
9 
10 #include <stdint.h>
11 #include <stdlib.h>
12 
15 {
16 private:
17  unsigned char m_prk[32];
18  static const size_t OUTPUT_SIZE = 32;
19 
20 public:
21  CHKDF_HMAC_SHA256_L32(const unsigned char* ikm, size_t ikmlen, const std::string& salt);
22  void Expand32(const std::string& info, unsigned char hash[OUTPUT_SIZE]);
23 };
24 
25 #endif // BITCOIN_CRYPTO_HKDF_SHA256_32_H
void Expand32(const std::string &info, unsigned char hash[OUTPUT_SIZE])
static const size_t OUTPUT_SIZE
CHKDF_HMAC_SHA256_L32(const unsigned char *ikm, size_t ikmlen, const std::string &salt)
A rfc5869 HKDF implementation with HMAC_SHA256 and fixed key output length of 32 bytes (L=32) ...
unsigned char m_prk[32]