Hash.hpp

   1 #ifndef HASH_DOT_HPP
   2 #define HASH_DOT_HPP
   3
   4 #include <string>
   5 #include <string_view>
   6
   7 #include <openssl/sha.h>
   8
   9 #include <glog/logging.h>
  10
  11 #include <cppcodec/base32_crockford.hpp>
  12
  13 class Hash {
  14 public:
  15   Hash() { CHECK_EQ(SHA256_Init(&c), 1); }
  16
  17   void update(std::string_view s)
  18   {
  19     CHECK_EQ(SHA256_Update(&c, s.data(), s.length()), 1);
  20   }
  21
  22   std::string final()
  23   {
  24     unsigned char md[SHA256_DIGEST_LENGTH];
  25     CHECK_EQ(SHA256_Final(md, &c), 1);
  26     return cppcodec::base32_crockford::encode(md);
  27   }
  28
  29 private:
  30   SHA256_CTX c;
  31 };
  32
  33 #endif // HASH_DOT_HPP