Class ExtensionMethods

Some extension methods that allow you to use SKGL Extension as a Fluent API.

Inheritance

object

ExtensionMethods

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

Namespace: SKGL

Assembly: Cryptolens.Licensing.CrossPlatform.dll

Syntax

public static class ExtensionMethods

Methods

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HasFeature(KeyInformation, int)

Checks so that a certain Feature is enabled (i.e. it's set to TRUE).

Declaration

public static KeyInformation HasFeature(this KeyInformation keyInformation, int featureNumber)

Parameters

Type	Name	Description
KeyInformation	keyInformation
int	featureNumber	The feature number, eg. feature1, feature 2, etc. FeatureNumber can be 1,2,...,8.

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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HasNotExpired(KeyInformation, bool)

Checks that they key has not expired (i.e. the expire date has not been reached).

Declaration

public static KeyInformation HasNotExpired(this KeyInformation keyInformation, bool checkWithInternetTime = false)

Parameters

Type	Name	Description
KeyInformation	keyInformation
bool	checkWithInternetTime	If set to true, we will also check that the local time (on the client computer) has not been changed (using SKM.TimeCheck).

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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HasNotFeature(KeyInformation, int)

Checks so that a certain Feature is disabled (i.e. it's set to FALSE).

Declaration

public static KeyInformation HasNotFeature(this KeyInformation keyInformation, int featureNumber)

Parameters

Type	Name	Description
KeyInformation	keyInformation
int	featureNumber	The feature number, eg. feature1, feature 2, etc. FeatureNumber can be 1,2,...,8.

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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HasValidSignature(KeyInformation, string)

Checks that this object has a valid signature, which means that the content has not been altered after that it was generated by Cryptolens.

Declaration

public static KeyInformation HasValidSignature(this KeyInformation keyInformation, string rsaPublicKey)

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	rsaPublicKey	The public key (RSA). It can be found here: https://app.cryptolens.io/User/Security

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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HasValidSignature(KeyInformation, string, int?)

Checks that this object has a valid signature, which means that the content has not been altered after that it was generated by Cryptolens.

Declaration

public static KeyInformation HasValidSignature(this KeyInformation keyInformation, string rsaPublicKey, int? signatureExpirationInterval)

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	rsaPublicKey	The public key (RSA). It can be found here: https://app.cryptolens.io/User/Security
int?	signatureExpirationInterval

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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IsOnRightMachine(KeyInformation)

Checks so that the machine code corresponds to the machine code of this computer. The default hash function is SHA1.

Declaration

public static KeyInformation IsOnRightMachine(this KeyInformation keyInformation)

Parameters

Type	Name	Description
KeyInformation	keyInformation

Returns

Type	Description
KeyInformation

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IsOnRightMachine(KeyInformation, Func<string, string>)

Checks so that the machine code corresponds to the machine code of this computer.

Declaration

public static KeyInformation IsOnRightMachine(this KeyInformation keyInformation, Func<string, string> hashFunction)

Parameters

Type	Name	Description
KeyInformation	keyInformation
Func<string, string>	hashFunction	A hash function used to hash the current computer's parameters.

Returns

Type	Description
KeyInformation

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IsValid(KeyInformation)

Checks that the Key Information object is valid (in the correct format). You can always add constraints such as @HasNotExpired(KeyInformation, bool).

Declaration

public static bool IsValid(this KeyInformation keyInformation)

Parameters

Type	Name	Description
KeyInformation	keyInformation

Returns

Type	Description
bool	Returns true if the object is valid and false otherwise.

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IsValid(KeyInformation, string)

Checks that the Key Information object is valid (in the correct format). You can always add constraints such as @HasNotExpired(KeyInformation, bool).

Declaration

public static bool IsValid(this KeyInformation keyInformation, string rsaPublicKey)

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	rsaPublicKey	The public key (RSA). It can be found here: https://app.cryptolens.io/User/Security

Returns

Type	Description
bool	Returns true if the object is valid and false otherwise.

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LoadFromFile(KeyInformation, string)

Load a saved object from file (using @SaveToFile(KeyInformation, string)).

Declaration

public static KeyInformation LoadFromFile(this KeyInformation keyInformation, string file = "")

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	file	The entire path including file name, i.e. c:\folder\file.txt

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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LoadFromFile(KeyInformation, string, bool, bool)

Load a saved object from file (using @SaveToFile(KeyInformation, string)).

Declaration

public static KeyInformation LoadFromFile(this KeyInformation keyInformation, string file = "", bool json = false, bool activationFile = false)

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	file	The entire path including file name, i.e. c:\folder\file.txt
bool	json	If the file is stored in JSON (eg. an activation file with .skm extension), set this parameter to TRUE.
bool	activationFile	If you obtained this file from an Activation Form (.skm extension), this should be set to true.

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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SaveToFile(KeyInformation, string)

Save the current object into a file. It can be read using @LoadFromFile(KeyInformation, string).

Declaration

public static KeyInformation SaveToFile(this KeyInformation keyInformation, string file = "")

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	file	The entire path including file name, i.e. c:\folder\file.txt

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

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SaveToFile(KeyInformation, string, bool)

Save the current object into a file. It can be read using @LoadFromFile(KeyInformation, string).

Declaration

public static KeyInformation SaveToFile(this KeyInformation keyInformation, string file = "", bool json = false)

Parameters

Type	Name	Description
KeyInformation	keyInformation
string	file	The entire path including file name, i.e. c:\folder\file.txt
bool	json	If the file is stored in JSON (eg. an activation file with .skm extension), set this parameter to TRUE.

Returns

Type	Description
KeyInformation	A key information object if the condition is satisfied. Null otherwise.

Remarks

This method does not use the same JSON format structure as activation files. Instead, if you want to read these files using LoadFromFile(KeyInformation, string), then activationFile has to be set to FALSE.