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在全局代码中写了一个函数，是根据他人c#版本改写过来，但是最后的时候出现了报错，请问蓝版可能是哪里写错了？

Public Function AES_decrypt(ByVal encryptedDataStr As String, ByVal key As String, ByVal iv As String) As String

Dim rijalg As New System.Security.Cryptography.RijndaelManaged

rijalg.KeySize = 128

rijalg.Padding = System.Security.Cryptography.PaddingMode.PKCS7

rijalg.Mode =System.Security.Cryptography.CipherMode.CBC

rijalg.Key = Convert.FromBase64String(key)

rijalg.IV = Convert.FromBase64String(iv)

Dim encryptedData As Byte() = Convert.FromBase64String(encryptedDataStr)

Dim decryptor As System.Security.Cryptography.ICryptoTransform = rijalg.CreateDecryptor(rijalg.Key, rijalg.IV)

Dim result As String

Using msDecrypt As System.IO.MemoryStream = New System.IO.MemoryStream(encryptedData)

Using csDecrypt As System.Security.Cryptography.CryptoStream = New System.Security.Cryptography.CryptoStream(msDecrypt, decryptor, System.Security.Cryptography.CryptoStreamMode.Read)

Using srDecrypt As System.IO.StreamReader = New System.IO.StreamReader(csDecrypt)

result = srDecrypt.ReadToEnd() '测试显示这里出现问题,提示填充无效,无法被移除

'MessageBox.Show("电话号码:" & result)

End Using

Return result

End Function

原c#代码发上来

原c#版本

public string AES_decrypt(string encryptedDataStr, string key, string iv)

{

RijndaelManaged rijalg = new RijndaelManaged();

//-----------------

//设置 cipher 格式 AES-128-CBC

rijalg.KeySize = 128;

rijalg.Padding = PaddingMode.PKCS7;

rijalg.Mode = CipherMode.CBC;

rijalg.Key = Convert.FromBase64String(key);

rijalg.IV = Convert.FromBase64String(iv);

byte[] encryptedData= Convert.FromBase64String(encryptedDataStr);

//解密

ICryptoTransform decryptor = rijalg.CreateDecryptor(rijalg.Key, rijalg.IV);

string result;

using (MemoryStream msDecrypt = new MemoryStream(encryptedData))

{

using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))

{

using (StreamReader srDecrypt = new StreamReader(csDecrypt))

{

result;= srDecrypt.ReadToEnd();

}

return result;

}

代码没有问题。怎么用这个函数的？确定传入的key和iv是正确的

主题：求助，全局代码报错