X509Certificate Constructor (String, SecureString)

 
System_CAPS_noteNote

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Initializes a new instance of the X509Certificate class using a certificate file name and a password.

Namespace:   System.Security.Cryptography.X509Certificates
Assembly:  mscorlib (in mscorlib.dll)

public X509Certificate(
	string fileName,
	SecureString password
)

Parameters

fileName
Type: System.String

The name of a certificate file.

password
Type: System.Security.SecureString

The password required to access the X.509 certificate data.

Exception Condition
CryptographicException

An error with the certificate occurs. For example:

  • The certificate file does not exist.

  • The certificate is invalid.

  • The certificate's password is incorrect.

ArgumentException

The fileName parameter is null.

ASN.1 DER is the only certificate format supported by this class. Calling this constructor with the correct password decrypts the private key and saves it to a key container.

System_CAPS_security Security Note

Never hard code a password within your source code. Hard-coded passwords can be retrieved from an assembly using the Ildasm.exe (IL Disassembler), a hex editor, or by simply opening the assembly in a text editor such as Notepad.exe.

If you create an X509Certificate certificate by specifying a PKCS7 signed file store for fileName, the X509Certificate is created for the certificate that signed the store rather than for any of the certificates within the store.

FileIOPermission

for permission to read the file described by the fileName parameter. Security action: Demand. Associated enumeration: EnvironmentPermissionAccess.Read

KeyContainerPermission

for permission to create a key container. Security action: Demand. Associated enumeration: KeyContainerPermissionFlags.Create

.NET Framework
Available since 2.0
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