Username/Password Authentication for UI

sunshine/crypto.cpp

@@ -4,6 +4,7 @@
 
 #include <openssl/pem.h>
 #include "crypto.h"
+#include <iostream>
 namespace crypto {
 using big_num_t = util::safe_ptr<BIGNUM, BN_free>;
 //using rsa_t = util::safe_ptr<RSA, RSA_free>;
@@ -338,4 +339,24 @@ bool verify256(const x509_t &x509, const std::string_view &data, const std::stri
 void md_ctx_destroy(EVP_MD_CTX *ctx) {
   EVP_MD_CTX_destroy(ctx);
 }
+
+std::string rand_string(std::size_t bytes)
+{
+  std::string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!%&()=-";
+  std::string value = rand(bytes);
+  for (std::size_t i = 0; i != value.size(); ++i) {
+    value[i] = alphabet[value[i] % alphabet.length()];
+  }
+  return value;
+}
+
+std::string hash_hexstr(const std::string_view &plaintext)
+{
+  sha256_t hashBytes = crypto::hash(plaintext);
+  std::ostringstream hashStream;
+  hashStream << std::hex  << std::setfill( '0' );
+  std::for_each( hashBytes.cbegin(), hashBytes.cend(), [&]( int c ) { hashStream << std::setw( 2 ) << c; } );
+  std::string hashString = hashStream.str();
+  return hashString;
+}
 }