使用js实现md5加密，想了解的可以看看

VC/MFC 获取文件MD5值 获取大文件MD5值 完整项目

该工具用于Mac上批量修改图片MD5、防止图片秒删、用于资源图片去重等，亲测好用。Mac。。。一键修改 混淆。。。。。

lwip协议栈源码提取 链接：https://pan.baidu.com/s/1Lcwap2cC0fNd7FhY44JhPQ 提取码：w74p

pb12.5使用系统DLL实现md5加密. 通过自定义对象包装，直接调用。

输入需要加密的字符串，有两种加密方式，普通md5加密和加盐MD5加密。根据需要生成。

PB MD5加密dllPB

'部分代码如下 Public Function MD5(sMessage) m_lOnBits(0) = CLng(1) m_lOnBits(1) = CLng(3) m_lOnBits(2) = CLng(7) m_lOnBits(3) = CLng(15) m_lOnBits(4) = CLng(31) m_lOnBits(5) = CLng(63) m_lOnBits(6) = CLng(127) m_lOnBits(7) = CLng(255) m_lOnBits(8) = CLng(511) m_lOnBits(9) = CLng(1023) m_lOnBits(10) = CLng(2047) m_lOnBits(11) = CLng(4095) m_lOnBits(12) = CLng(8191) m_lOnBits(13) = CLng(16383) m_lOnBits(14) = CLng(32767) m_lOnBits(15) = CLng(65535) m_lOnBits(16) = CLng(131071) m_lOnBits(17) = CLng(262143) m_lOnBits(18) = CLng(524287) m_lOnBits(19) = CLng(1048575) m_lOnBits(20) = CLng(2097151) m_lOnBits(21) = CLng(4194303) m_lOnBits(22) = CLng(8388607) m_lOnBits(23) = CLng(16777215) m_lOnBits(24) = CLng(33554431) m_lOnBits(25) = CLng(67108863) m_lOnBits(26) = CLng(134217727) m_lOnBits(27) = CLng(268435455) m_lOnBits(28) = CLng(536870911) m_lOnBits(29) = CLng(1073741823) m_lOnBits(30) = CLng(2147483647) m_l2Power(0) = CLng(1) m_l2Power(1) = CLng(2) m_l2Power(2) = CLng(4) m_l2Power(3) = CLng(8) m_l2Power(4) = CLng(16) m_l2Power(5) = CLng(32) m_l2Power(6) = CLng(64) m_l2Power(7) = CLng(128) m_l2Power(8) = CLng(256) m_l2Power(9) = CLng(512) m_l2Power(10) = CLng(1024) m_l2Power(11) = CLng(2048) m_l2Power(12) = CLng(4096) m_l2Power(13) = CLng(8192) m_l2Power(14) = CLng(16384) m_l2Power(15) = CLng(32768) m_l2Power(16) = CLng(65536) m_l2Power(17) = CLng(131072) m_l2Power(18) = CLng(262144) m_l2Power(19) = CLng(524288) m_l2Power(20) = CLng(1048576) m_l2Power(21) = CLng(2097152) m_l2Power(22) = CLng(4194304) m_l2Power(23) = CLng(8388608) m_l2Power(24) = CLng(16777216) m_l2Power(25) = CLng(33554432) m_l2Power(26) = CLng(67108864) m_l2Power(27) = CLng(134217728) m_l2Power(28) = CLng(268435456) m_l2Power(29) = CLng(536870912) m_l2Power(30) = CLng(1073741824) Dim x Dim k Dim AA Dim BB Dim CC Dim DD Dim a Dim b Dim c Dim d Const S11 = 7 Const S12 = 12 Const S13 = 17 Const S14 = 22 Const S21 = 5 Const S22 = 9 Const S23 = 14 Const S24 = 20 Const S31 = 4 Const S32 = 11 Const S33 = 16 Const S34 = 23 Const S41 = 6 Const S42 = 10 Const S43 = 15 Const S44 = 21 x = ConvertToWordArray(sMessage) a = &H67452301; b = &HEFCDAB89; c = &H98BADCFE; d = &H10325476; For k = 0 To UBound(x) Step 16 AA = a BB = b CC = c DD = d md5_FF a, b, c, d, x(k + 0), S11, &HD76AA478; md5_FF d, a, b, c, x(k + 1), S12, &HE8C7B756; md5_FF c, d, a, b, x(k + 2), S13, &H242070DB; md5_FF b, c, d, a, x(k + 3), S14, &HC1BDCEEE; md5_FF a, b, c, d, x(k + 4), S11, &HF57C0FAF; md5_FF d, a, b, c, x(k + 5), S12, &H4787C62A; md5_FF c, d, a, b, x(k + 6), S13, &HA8304613; md5_FF b, c, d, a, x(k + 7), S14, &HFD469501; md5_FF a, b, c, d, x(k + 8), S11, &H698098D8; md5_FF d, a, b, c, x(k + 9), S12, &H8B44F7AF; md5_FF c, d, a, b, x(k + 10), S13, &HFFFF5BB1; md5_FF b, c, d, a, x(k + 11), S14, &H895CD7BE; md5_FF a, b, c, d, x(k + 12), S11, &H6B901122; md5_FF d, a, b, c, x(k + 13), S12, &HFD987193; md5_FF c, d, a, b, x(k + 14), S13, &HA679438E; md5_FF b, c, d, a, x(k + 15), S14, &H49B40821; md5_GG a, b, c, d, x(k + 1), S21, &HF61E2562; md5_GG d, a, b, c, x(k + 6), S22, &HC040B340; md5_GG c, d, a, b, x(k + 11), S23, &H265E5A51; md5_GG b, c, d, a, x(k + 0), S24, &HE9B6C7AA; md5_GG a, b, c, d, x(k + 5), S21, &HD62F105D; md5_GG d, a, b, c, x(k + 10), S22, &H2441453; md5_GG c, d, a, b, x(k + 15), S23, &HD8A1E681; md5_GG b, c, d, a, x(k + 4), S24, &HE7D3FBC8; md5_GG a, b, c, d, x(k + 9), S21, &H21E1CDE6; md5_GG d, a, b, c, x(k + 14), S22, &HC33707D6; md5_GG c, d, a, b, x(k + 3), S23, &HF4D50D87; md5_GG b, c, d, a, x(k + 8), S24, &H455A14ED; md5_GG a, b, c, d, x(k + 13), S21, &HA9E3E905; md5_GG d, a, b, c, x(k + 2), S22, &HFCEFA3F8; md5_GG c, d, a, b, x(k + 7), S23, &H676F02D9; md5_GG b, c, d, a, x(k + 12), S24, &H8D2A4C8A; md5_HH a, b, c, d, x(k + 5), S31, &HFFFA3942; md5_HH d, a, b, c, x(k + 8), S32, &H8771F681; md5_HH c, d, a, b, x(k + 11), S33, &H6D9D6122; md5_HH b, c, d, a, x(k + 14), S34, &HFDE5380C; md5_HH a, b, c, d, x(k + 1), S31, &HA4BEEA44; md5_HH d, a, b, c, x(k + 4), S32, &H4BDECFA9; md5_HH c, d, a, b, x(k + 7), S33, &HF6BB4B60; md5_HH b, c, d, a, x(k + 10), S34, &HBEBFBC70; md5_HH a, b, c, d, x(k + 13), S31, &H289B7EC6; md5_HH d, a, b, c, x(k + 0), S32, &HEAA127FA; md5_HH c, d, a, b, x(k + 3), S33, &HD4EF3085; md5_HH b, c, d, a, x(k + 6), S34, &H4881D05; md5_HH a, b, c, d, x(k + 9), S31, &HD9D4D039; md5_HH d, a, b, c, x(k + 12), S32, &HE6DB99E5; md5_HH c, d, a, b, x(k + 15), S33, &H1FA27CF8; md5_HH b, c, d, a, x(k + 2), S34, &HC4AC5665; md5_II a, b, c, d, x(k + 0), S41, &HF4292244; md5_II d, a, b, c, x(k + 7), S42, &H432AFF97; md5_II c, d, a, b, x(k + 14), S43, &HAB9423A7; md5_II b, c, d, a, x(k + 5), S44, &HFC93A039; md5_II a, b, c, d, x(k + 12), S41, &H655B59C3; md5_II d, a, b, c, x(k + 3), S42, &H8F0CCC92; md5_II c, d, a, b, x(k + 10), S43, &HFFEFF47D; md5_II b, c, d, a, x(k + 1), S44, &H85845DD1; md5_II a, b, c, d, x(k + 8), S41, &H6FA87E4F; md5_II d, a, b, c, x(k + 15), S42, &HFE2CE6E0; md5_II c, d, a, b, x(k + 6), S43, &HA3014314; md5_II b, c, d, a, x(k + 13), S44, &H4E0811A1; md5_II a, b, c, d, x(k + 4), S41, &HF7537E82; md5_II d, a, b, c, x(k + 11), S42, &HBD3AF235; md5_II c, d, a, b, x(k + 2), S43, &H2AD7D2BB; md5_II b, c, d, a, x(k + 9), S44, &HEB86D391; a = AddUnsigned(a, AA) b = AddUnsigned(b, BB) c = AddUnsigned(c, CC) d = AddUnsigned(d, DD) Next MD5_32 = LCase(WordToHex(a) & WordToHex(b) & WordToHex(c) & WordToHex(d)) '32位MD5 MD5_16 = LCase(WordToHex(b) & WordToHex(c)) '16位MD5 End Function

看雪《加密解密第三版》随书光盘的第6章。 内含md5 sha aes idea tea rsa elgamal 椭圆曲线 base64 等常见加解密算法，因此特地从中抽出，以便学习。 感兴趣的同学，可以购买原书，这是一本国人写的关于软件破解与软件保护的优秀著作。

.Net c# 几种加密方法固定key 随机key 对称加密 MD5等