STF525/html/sha256_8hh_source.html

 #pragma once

 #include <vector>

 #include <openssl/sha.h>
 #include <openssl/objects.h>

 class sha256 {
   SHA256_CTX _ctx;
 public:
   explicit sha256(): _ctx{} { };
   virtual ~sha256() { };

   inline int generate(const std::vector<unsigned char> p_buffer, std::vector<unsigned char>& p_hash) {
     // Sanity check
     if (p_buffer.size() == 0) {
       return -1;
     }

     return generate(p_buffer.data(), p_buffer.size(), p_hash);
   };

   inline int generate(const unsigned char *p_buffer, const size_t p_length, std::vector<unsigned char>& p_hash) {
     // Sanity check
     if (p_buffer == nullptr) {
       return -1;
     }
     // Resize data buffer
     p_hash.resize(SHA256_DIGEST_LENGTH);
     // Compute the hash value
     ::SHA256_Init(&_ctx);
     ::SHA256_Update(&_ctx, p_buffer, p_length);
     ::SHA256_Final(static_cast<unsigned char*>(p_hash.data()), &_ctx);
     return 0;
   };
 }; // End of class sha256
sha256
This class provides description of SHA-256 helper methods.
Definition: sha256.hh:22

sha256::~sha256
virtual ~sha256()
Default destructor.
Definition: sha256.hh:33

sha256::_ctx
SHA256_CTX _ctx
Definition: sha256.hh:23

sha256::generate
int generate(const unsigned char *p_buffer, const size_t p_length, std::vector< unsigned char > &p_hash)
Definition: sha256.hh:61

sha256::generate
int generate(const std::vector< unsigned char > p_buffer, std::vector< unsigned char > &p_hash)
Receive bytes formated data from the lower layers.
Definition: sha256.hh:43

sha256::sha256
sha256()
SHA context.
Definition: sha256.hh:29