md5.hpp

#ifndef MSTL_CORE_ENCRYPT_MD5_HPP__
#define MSTL_CORE_ENCRYPT_MD5_HPP__
#include "../string/string.hpp"
MSTL_BEGIN_NAMESPACE__
 
class MSTL_API MD5 {
private:
    static constexpr uint32_t S[64] = {
        7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
        5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
        4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
        6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21
    };
 
    static constexpr uint32_t K[64] = {
        0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
        0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
        0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
        0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
        0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
        0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
        0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
        0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
    };
 
    static constexpr uint32_t rotleft(const uint32_t x, const uint32_t c) { return (x << c) | (x >> (32 - c)); }
 
    static constexpr uint32_t F(const uint32_t x, const uint32_t y, const uint32_t z) { return (x & y) | (~x & z); }
    static constexpr uint32_t G(const uint32_t x, const uint32_t y, const uint32_t z) { return (x & z) | (y & ~z); }
    static constexpr uint32_t H(const uint32_t x, const uint32_t y, const uint32_t z) { return x ^ y ^ z; }
    static constexpr uint32_t I(const uint32_t x, const uint32_t y, const uint32_t z) { return y ^ (x | ~z); }
 
public:
    static bstring hash(bstring_view data);
    static string hash_hex(bstring_view data);
};
 
 
MSTL_ALWAYS_INLINE_INLINE string md5(const bstring& data) {
    return MD5::hash_hex(data.view());
}
MSTL_ALWAYS_INLINE_INLINE string md5(const string& data) {
    return md5(to_bstring(data));
}
 
MSTL_ALWAYS_INLINE_INLINE string md5(const bstring_view data) {
    return MD5::hash_hex(data);
}
MSTL_ALWAYS_INLINE_INLINE string md5(const string_view data) {
    return md5(to_bstring(data));
}
 
MSTL_ALWAYS_INLINE_INLINE string md5(const char* data) {
    return md5(string_view{data});
}
 
MSTL_END_NAMESPACE__
#endif // MSTL_CORE_ENCRYPT_MD5_HPP__