如何将SecureString转换为System.String？

使用

System.Runtime.InteropServices.Marshal

String SecureStringToString(SecureString value) {  IntPtr valuePtr = IntPtr.Zero;  try {    valuePtr = Marshal.SecureStringToGlobalAllocUnipre(value);    return Marshal.PtrToStringUni(valuePtr);  } finally {    Marshal.ZeroFreeGlobalAllocUnipre(valuePtr);  }}

如果要避免创建托管字符串对象，可以使用

Marshal.ReadInt16(IntPtr,Int32)

void HandleSecureString(SecureString value) {  IntPtr valuePtr = IntPtr.Zero;  try {    valuePtr = Marshal.SecureStringToGlobalAllocUnipre(value);    for (int i=0; i < value.Length; i++) {      short unipreChar = Marshal.ReadInt16(valuePtr, i*2);      // handle unipreChar    }  } finally {    Marshal.ZeroFreeGlobalAllocUnipre(valuePtr);  }}