Arduino Cryptography Library
BLAKE2s.h
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22 
23 #ifndef CRYPTO_BLAKE2S_H
24 #define CRYPTO_BLAKE2S_H
25 
26 #include "Hash.h"
27 
28 class BLAKE2s : public Hash
29 {
30 public:
31  BLAKE2s();
32  virtual ~BLAKE2s();
33 
34  size_t hashSize() const;
35  size_t blockSize() const;
36 
37  void reset();
38  void reset(uint8_t outputLength);
39  void reset(const void *key, size_t keyLen, uint8_t outputLength = 32);
40 
41  void update(const void *data, size_t len);
42  void finalize(void *hash, size_t len);
43 
44  void clear();
45 
46  void resetHMAC(const void *key, size_t keyLen);
47  void finalizeHMAC(const void *key, size_t keyLen, void *hash, size_t hashLen);
48 
49  static const size_t HASH_SIZE = 32;
50  static const size_t BLOCK_SIZE = 64;
51 
52 private:
53  struct {
54  uint32_t h[8];
55  uint32_t m[16];
56  uint64_t length;
57  uint8_t chunkSize;
58  } state;
59 
60  void processChunk(uint32_t f0);
61 };
62 
63 #endif
BLAKE2s hash algorithm.
Definition: BLAKE2s.h:29
void clear()
Clears the hash state, removing all sensitive data, and then resets the hash ready for a new hashing ...
Definition: BLAKE2s.cpp:237
size_t blockSize() const
Size of the internal block used by the hash algorithm.
Definition: BLAKE2s.cpp:104
void finalizeHMAC(const void *key, size_t keyLen, void *hash, size_t hashLen)
Finalizes the HMAC hashing process and returns the hash.
Definition: BLAKE2s.cpp:250
virtual ~BLAKE2s()
Destroys this BLAKE2s hash object after clearing sensitive information.
Definition: BLAKE2s.cpp:94
static const size_t HASH_SIZE
Constant for the size of the hash output of BLAKE2s.
Definition: BLAKE2s.h:49
BLAKE2s()
Constructs a BLAKE2s hash object.
Definition: BLAKE2s.cpp:85
void finalize(void *hash, size_t len)
Finalizes the hashing process and returns the hash.
Definition: BLAKE2s.cpp:221
void reset()
Resets the hash ready for a new hashing process.
Definition: BLAKE2s.cpp:119
void resetHMAC(const void *key, size_t keyLen)
Resets the hash ready for a new HMAC hashing process.
Definition: BLAKE2s.cpp:243
void update(const void *data, size_t len)
Updates the hash with more data.
Definition: BLAKE2s.cpp:199
size_t hashSize() const
Size of the hash result from finalize().
Definition: BLAKE2s.cpp:99
static const size_t BLOCK_SIZE
Constant for the block size of BLAKE2s.
Definition: BLAKE2s.h:50
Abstract base class for cryptographic hash algorithms.
Definition: Hash.h:30