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Various improvements to serialization of data encoded via Base64 to Json

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This commit is contained in:
Wojtek Figat
2023-07-13 13:10:34 +02:00
parent c6a82b8c36
commit 3b90e75307
3 changed files with 14 additions and 34 deletions
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23
Source/Engine/Utilities/Encryption.cpp
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@@ -5,16 +5,11 @@
namespace
{
const char* base64_chars =
const char* Base64Chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
bool is_base64(byte c)
{
return StringUtils::IsAlnum((char)c) || c == '+' || c == '/';
}
// @formatter:off
const int32 B64index[256] =
{
@@ -76,23 +71,23 @@ void Encryption::Base64Encode(const byte* bytes, int32 size, char* encoded)
int32 i;
for (i = 0; i < size - 2; i += 3)
{
*encoded++ = base64_chars[bytes[i] >> 2 & 0x3F];
*encoded++ = base64_chars[(bytes[i] & 0x3) << 4 | (int32)(bytes[i + 1] & 0xF0) >> 4];
*encoded++ = base64_chars[(bytes[i + 1] & 0xF) << 2 | (int32)(bytes[i + 2] & 0xC0) >> 6];
*encoded++ = base64_chars[bytes[i + 2] & 0x3F];
*encoded++ = Base64Chars[bytes[i] >> 2 & 0x3F];
*encoded++ = Base64Chars[(bytes[i] & 0x3) << 4 | (int32)(bytes[i + 1] & 0xF0) >> 4];
*encoded++ = Base64Chars[(bytes[i + 1] & 0xF) << 2 | (int32)(bytes[i + 2] & 0xC0) >> 6];
*encoded++ = Base64Chars[bytes[i + 2] & 0x3F];
}
if (i < size)
{
*encoded++ = base64_chars[bytes[i] >> 2 & 0x3F];
*encoded++ = Base64Chars[bytes[i] >> 2 & 0x3F];
if (i == size - 1)
{
*encoded++ = base64_chars[((bytes[i] & 0x3) << 4)];
*encoded++ = Base64Chars[((bytes[i] & 0x3) << 4)];
*encoded++ = '=';
}
else
{
*encoded++ = base64_chars[(bytes[i] & 0x3) << 4 | (int32)(bytes[i + 1] & 0xF0) >> 4];
*encoded++ = base64_chars[((bytes[i + 1] & 0xF) << 2)];
*encoded++ = Base64Chars[(bytes[i] & 0x3) << 4 | (int32)(bytes[i + 1] & 0xF0) >> 4];
*encoded++ = Base64Chars[((bytes[i + 1] & 0xF) << 2)];
}
*encoded = '=';
}