Computes the SHA256 hash from a byte stream. More...
#include <sha224_256.hpp>
Public Member Functions | |
| void | reset () override=0 |
| Resets the checksum to initial value. More... | |
| void | update (const uint8_t *buf, size_t len) override final |
| Updates the SHA256 hash with specified array of bytes. More... | |
 Public Member Functions inherited from libxcks::ChecksumEx | |
| std::string | toString (const bool hexInUpperCase=false) const override |
| Returns the hash value has a string. More... | |
| Public Member Functions inherited from libxcks::Checksum | |
| virtual | ~Checksum () |
| Destructor. More... | |
| virtual uint8_t * | getValue (uint8_t *buffer) const =0 |
| Returns the checksum value in the first bytes of the given address. More... | |
| virtual size_t | getSize () const =0 |
| Returns the minimal size to allocate in memory to store the checksum with the getValue(buffer) method. More... | |
| virtual std::string | getName () const =0 |
| Returns the name of the checksum or the hash algorithm. More... | |
| virtual ArrayString | getAltNames () const |
| Returns the alternative name(s) of the checksum or the hash algorithm. More... | |
| virtual ChecksumAlgoId | getID () const =0 |
| Returns an unique identifier for the checksum or the hash algorithm. More... | |
Protected Member Functions | |
| void | finish () |
| Process the remaining bytes in the internal buffer and the usual prolog according to the standard. More... | |
| void | transform (uint8_t *data) |
| Transform the message X which consists of 16 32-bit-words. More... | |
Protected Attributes | |
| uint32_t | h0 |
| First part of the state of computation. More... | |
| uint32_t | h1 |
| Second part of the state of computation. More... | |
| uint32_t | h2 |
| Third part of the state of computation. More... | |
| uint32_t | h3 |
| Fourth part of the state of computation. More... | |
| uint32_t | h4 |
| Fifth part of the state of computation. More... | |
| uint32_t | h5 |
| Sixth part of the state of computation. More... | |
| uint32_t | h6 |
| Seventh part of the state of computation. More... | |
| uint32_t | h7 |
| Eighth part of the state of computation. More... | |
| uint32_t | nblocks |
| Number of blocks. More... | |
| int | count |
| Current size of the input buffer. More... | |
| uint8_t | ibuffer [64] |
| Input buffer. More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from libxcks::Checksum | |
| static ArrayString | getAlternativeNames () |
| Returns the alternative name(s) of the checksum or the hash algorithm. More... | |
| Static Protected Member Functions inherited from libxcks::LibgcryptHash | |
| static uint32_t | rol (uint32_t x, int n) |
Rotate the 32 bit unsigned integer x by n bits left. More... | |
| static uint32_t | ror (uint32_t x, int n) |
Rotate the 32 bit unsigned integer x by n bits right. More... | |
| Static Protected Member Functions inherited from libxcks::ChecksumEx | |
| static uint32_t | swapOnLE (const uint32_t value) |
| Swaps bytes on little endian architectures. More... | |
| static uint32_t | swapOnBE (const uint32_t value) |
| Swaps bytes on big endian architectures. More... | |
| static uint64_t | swapOnLE (const uint64_t value) |
| Swaps bytes on little endian architectures. More... | |
| static uint64_t | swapOnBE (const uint64_t value) |
| Swaps bytes on big endian architectures. More... | |
Detailed Description
Computes the SHA256 hash from a byte stream.
This class is a rewrite in C++ of the sha256 hash computing algorithm present in the Libgcrypt. Please see the GNU Privacy Guard project website for more informations.
This abstract class implements the SHA224 hash and SHA256 hash computing.
Definition at line 44 of file sha224_256.hpp.
Member Function Documentation
◆ finish()
|
protected |
Process the remaining bytes in the internal buffer and the usual prolog according to the standard.
Definition at line 81 of file sha224_256.cpp.
◆ reset()
|
overridepure virtual |
Resets the checksum to initial value.
Implements libxcks::LibgcryptHash.
Implemented in libxcks::SHA256, and libxcks::SHA224.
◆ transform()
|
protected |
Transform the message X which consists of 16 32-bit-words.
It is assumed that data has the length of 16 32-bit-words.
- Parameters
-
data The data to process.
Definition at line 211 of file sha224_256.cpp.
◆ update()
|
finaloverridevirtual |
Updates the SHA256 hash with specified array of bytes.
- Parameters
-
buf The byte array to update the SHA256 hash with. len The number of bytes to use for the update.
Implements libxcks::Checksum.
Definition at line 151 of file sha224_256.cpp.
Member Data Documentation
◆ count
|
protected |
Current size of the input buffer.
Definition at line 58 of file sha224_256.hpp.
◆ h0
|
protected |
First part of the state of computation.
Definition at line 48 of file sha224_256.hpp.
◆ h1
|
protected |
Second part of the state of computation.
Definition at line 49 of file sha224_256.hpp.
◆ h2
|
protected |
Third part of the state of computation.
Definition at line 50 of file sha224_256.hpp.
◆ h3
|
protected |
Fourth part of the state of computation.
Definition at line 51 of file sha224_256.hpp.
◆ h4
|
protected |
Fifth part of the state of computation.
Definition at line 52 of file sha224_256.hpp.
◆ h5
|
protected |
Sixth part of the state of computation.
Definition at line 53 of file sha224_256.hpp.
◆ h6
|
protected |
Seventh part of the state of computation.
Definition at line 54 of file sha224_256.hpp.
◆ h7
|
protected |
Eighth part of the state of computation.
Definition at line 55 of file sha224_256.hpp.
◆ ibuffer
|
protected |
Input buffer.
Definition at line 59 of file sha224_256.hpp.
◆ nblocks
|
protected |
Number of blocks.
Definition at line 57 of file sha224_256.hpp.
The documentation for this class was generated from the following files:
- src/algos/sha224_256.hpp
- src/algos/sha224_256.cpp
