Class Signature

Definition

Namespace:: Tizen.Security.SecureRepository.Crypto

Assembly:: Tizen.Security.SecureRepository.dll

API Level:: 3

This class provides the methods for creating and verifying a signature.


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public class Signature

Inheritance: System.Object

Signature

Constructors

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Signature(SignatureParameters)

A constructor of Signature that takes the algorithm specific parameters.

Declaration


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public Signature(SignatureParameters parameters)

Parameters

Type	Name	Description
SignatureParameters	parameters	The algorithm specific parameters.

API Level: 3

Properties

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Parameters

The algorithm specific parameters.

Declaration


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public SignatureParameters Parameters { get; }

Property Value

Type	Description
SignatureParameters

API Level: 3

Methods

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Sign(String, String, Byte[])

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

Declaration


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

Parameters

Type	Name	Description
System.String	privateKeyAlias	The name of private key.
System.String	password	The password used in decrypting a private key value.
System.Byte[]	message	The message that is signed with a private key.

Returns

Type	Description
System.Byte[]	A newly created signature.

Remarks

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

Exceptions

Type	Condition
System.ArgumentNullException	The privateKeyAlias or message is null.
System.ArgumentException	The privateKeyAlias is invalid format.
System.InvalidOperationException	The key-protecting password isn't matched. The key does not exist with the privateKeyAlias.

API Level: 3

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Verify(String, String, Byte[], Byte[])

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

Declaration


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

Parameters

Type	Name	Description
System.String	publicKeyAlias	The name of public key.
System.String	password	The password used in decrypting a public key value.
System.Byte[]	message	The input on which the signature is created.
System.Byte[]	signature	The signature that is verified with public key.

Returns

Type	Description
Boolean	The signature status. True is returned when the signature is valid.

Remarks

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

Exceptions

Type	Condition
System.ArgumentNullException	The publicKeyAlias, message or signature is null.
System.ArgumentException	The publicKeyAlias is invalid format.
System.InvalidOperationException	The key-protecting password isn't matched. The key does not exist with the publicKeyAlias.