#include <Sha2Impl.h>
Public Member Functions | |
| void | clear () |
| Clears the internal state. A new hash can then be calculated. | |
| ::icl_core::String | getHexDigest () const |
| Returns the message digest as a hex string. | |
| Sha2Impl () | |
| Initializes the internal state. | |
Static Public Attributes | |
| static const size_t | cMESSAGE_BLOCK_SIZE = 64 |
| The message block size in bytes. | |
| static const size_t | cMESSAGE_PAD_POSITION = 56 |
Protected Member Functions | |
| void | processBuffer () |
Protected Attributes | |
| uint8_t | m_buffer [cMESSAGE_BLOCK_SIZE] |
| size_t | m_buffer_fill |
| The amount of bytes currently stored in the internal buffer. | |
| T | m_digest [8] |
| The whole message digest. | |
| uint64_t | m_message_size |
| The size of the message so far, in bytes. | |
Detailed Description
template<typename T, T t_h0, T t_h1, T t_h2, T t_h3, T t_h4, T t_h5, T t_h6, T t_h7, size_t t_len>
class icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >
The implementation internals for SHA-2, following the FIPS PUB 180-3 Secure Hash Standard (SHS). The implementation works for 32-bit (SHA-224, SHA-256) and 64-bit (SHA-384, SHA-512) data types. The algorithmic differences in the 64-bit version are captured by a template specialization.
- Template Parameters:
-
T The type of the message words (uint32_t or uint64_t). t_h0 The initial hash value, word 0. t_h1 The initial hash value, word 1. t_h2 The initial hash value, word 2. t_h3 The initial hash value, word 3. t_h4 The initial hash value, word 4. t_h5 The initial hash value, word 5. t_h6 The initial hash value, word 6. t_h7 The initial hash value, word 7. t_len The length, in words, of the message digest. This may be at most 8 (i.e., all eight words of the digest are used). Only the first t_len words of the digest are returned otherwise.
Definition at line 52 of file Sha2Impl.h.
Constructor & Destructor Documentation
| icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::Sha2Impl | ( | ) |
Initializes the internal state.
Member Function Documentation
| void icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::clear | ( | ) |
Clears the internal state. A new hash can then be calculated.
| ::icl_core::String icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::getHexDigest | ( | ) | const |
Returns the message digest as a hex string.
| void icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::processBuffer | ( | ) | [protected] |
Processes the current buffer contents and adds them to the message digest.
Member Data Documentation
const size_t icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::cMESSAGE_BLOCK_SIZE = 64 [static] |
The message block size in bytes.
Definition at line 56 of file Sha2Impl.h.
const size_t icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::cMESSAGE_PAD_POSITION = 56 [static] |
The position up to which the last block is padded (the remaining bytes hold the message length).
Definition at line 60 of file Sha2Impl.h.
uint8_t icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::m_buffer[cMESSAGE_BLOCK_SIZE] [protected] |
The internal message buffer. Stores the data for one message block.
Definition at line 84 of file Sha2Impl.h.
size_t icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::m_buffer_fill [protected] |
The amount of bytes currently stored in the internal buffer.
Definition at line 86 of file Sha2Impl.h.
T icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::m_digest[8] [protected] |
The whole message digest.
Definition at line 78 of file Sha2Impl.h.
uint64_t icl_core::crypt::Sha2Impl< T, t_h0, t_h1, t_h2, t_h3, t_h4, t_h5, t_h6, t_h7, t_len >::m_message_size [protected] |
The size of the message so far, in bytes.
Definition at line 80 of file Sha2Impl.h.
The documentation for this class was generated from the following file: