[AHK][FUNC]Base64 Encode / Decode

 需求：c2VhcmNob25leUAxNjMuY29t 是啥内容？

 

 

; ===============================================================================================================================
; Base64 Encode / Decode a string (binary-to-text encoding)
; ===============================================================================================================================

b64Encode(string)
{
    VarSetCapacity(bin, StrPut(string, "UTF-8")) && len := StrPut(string, &bin, "UTF-8") - 1 
    if !(DllCall("crypt32\CryptBinaryToString", "ptr", &bin, "uint", len, "uint", 0x1, "ptr", 0, "uint*", size))
        throw Exception("CryptBinaryToString failed", -1)
    VarSetCapacity(buf, size << 1, 0)
    if !(DllCall("crypt32\CryptBinaryToString", "ptr", &bin, "uint", len, "uint", 0x1, "ptr", &buf, "uint*", size))
        throw Exception("CryptBinaryToString failed", -1)
    return StrGet(&buf)
}

b64Decode(string)
{
    if !(DllCall("crypt32\CryptStringToBinary", "ptr", &string, "uint", 0, "uint", 0x1, "ptr", 0, "uint*", size, "ptr", 0, "ptr", 0))
        throw Exception("CryptStringToBinary failed", -1)
    VarSetCapacity(buf, size, 0)
    if !(DllCall("crypt32\CryptStringToBinary", "ptr", &string, "uint", 0, "uint", 0x1, "ptr", &buf, "uint*", size, "ptr", 0, "ptr", 0))
        throw Exception("CryptStringToBinary failed", -1)
    return StrGet(&buf, size, "UTF-8")
}

; ===============================================================================================================================

MsgBox % b64Decode("c2VhcmNob25leUAxNjMuY29t==")

; Andy J  
; c2VhcmNob25leUAxNjMuY29t请问这种东西是不是加密的
; 用base 64