Class Signature

Definition

Namespace:

Tizen.Security.SecureRepository.Crypto

Assembly:

Tizen.Security.SecureRepository.dll

Provides the methods for creating and verifying a signature.

public class Signature

Inheritance

object

Signature

Constructors

Signature(SignatureParameters)

Initializes an instance of Signature class with SignatureParameters.

Declaration

public Signature(SignatureParameters parameters)

Parameters

Type	Name	Description
SignatureParameters	parameters	The algorithm specific parameters.

Properties

Parameters

Gets algorithm specific parameters.

Declaration

public SignatureParameters Parameters { get; }

Property Value

Type	Description
SignatureParameters	Algorithm specific parameters.

Methods

Sign(string, string, byte[])

Creates a signature on a given message using a private key and returns the signature.

Declaration

public byte[] Sign(string privateKeyAlias, string password, byte[] message)

Parameters

Type	Name	Description
string	privateKeyAlias	Name of a private key.
string	password	Password used in decrypting a private key value.
byte[]	message	Message signed with a private key.

Returns

Type	Description
byte[]	Newly created signature.

Remarks

Key type specified by the privateKeyAlias should be compatible with the algorithm specified in Parameters.

Exceptions

Type	Condition
System.ArgumentNullException	Thrown when privateKeyAlias or message is null.
System.ArgumentException	Thrown when privateKeyAlias has invalid format.
System.InvalidOperationException	Thrown when key-protecting password does not match. Thrown when key does not exist with given privateKeyAlias.

Verify(string, string, byte[], byte[])

Verifies a given signature on a given message using a public key and returns the signature status.

Declaration

public bool Verify(string publicKeyAlias, string password, byte[] message, byte[] signature)

Parameters

Type	Name	Description
string	publicKeyAlias	Name of a public key.
string	password	Password used in decrypting a public key value.
byte[]	message	Input message on which the signature is created.
byte[]	signature	Signature that is verified with public key.

Returns

Type	Description
bool	Signature status. True if the signature is valid.

Remarks

Key type specified by publicKeyAlias should be compatible with the algorithm specified in Parameters.

Exceptions

Type	Condition
System.ArgumentNullException	Thrown when publicKeyAlias, message or signature is null.
System.ArgumentException	Thrown when publicKeyAlias has invalid format.
System.InvalidOperationException	Thrown when key-protecting password does not match. Thrown when key does not exist with given publicKeyAlias.