'部分源码如下：
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
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