//加密代码
Sub RC4Initialize(strPwd,ByRef sbox,ByRef key)
dim tempSwap
dim a
dim b
intLength = len(strPwd)
For a = 0 To 255
key(a) = asc(mid(strpwd, (a mod intLength)+1, 1))
sbox(a) = a
next
b = 0
For a = 0 To 255
b = (b + sbox(a) + key(a)) Mod 256
tempSwap = sbox(a)
sbox(a) = sbox(b)
sbox(b) = tempSwap
Next
End Sub

Function EnCrypt(plaintxt, psw)
Dim sbox(255)
Dim key(255)
dim temp
dim a
dim i
dim j
dim k
dim cipherby
dim cipher
i = 0
j = 0
RC4Initialize psw,sbox,key
For a = 1 To Len(plaintxt)
i = (i + 1) Mod 256
j = (j + sbox(i)) Mod 256
temp = sbox(i)
sbox(i) = sbox(j)
sbox(j) = temp
k = sbox((sbox(i) + (sbox(j) Mod 256)) Mod 256)
cipherby = asc(Mid(plaintxt, a, 1)) Xor k
cipher = cipher & "&#" & cipherby & ";"
Next
EnCrypt = cipher
End Function

这个解密的代码要怎么写，哪位大侠帮忙一下。。谢谢。。

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