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static extern bool CryptEnumProviders(

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[DllImport("advapi32.dll", EntryPoint = "CryptEnumProviders", SetLastError = true)]

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static extern bool CryptEnumProviders(

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internal static extern bool CryptEnumProviders(

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    while (CryptEnumProviders(dwIndex, IntPtr.Zero, 0, ref dwType, null, ref cbName))

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        if (CryptEnumProviders(dwIndex++, IntPtr.Zero, 0, ref dwType, pszName, ref cbName))

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         public static extern bool CryptEnumProviders(

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     while ([PKI.CSP]::CryptEnumProviders($dwIndex,0,0,[ref]$pdwProvType,$null,[ref]$pcbProvName)) {

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     if ([PKI.CSP]::CryptEnumProviders($dwIndex++,0,0,[ref]$pdwProvType,$pszProvName,[ref]$pcbProvName)) {

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Documentation

[CryptEnumProviders] on MSDN