Class Cipher

Definition

Namespace:

Tizen.Security.SecureRepository.Crypto

Assembly:

Tizen.Security.SecureRepository.dll

Provides the methods for encrypting and decrypting data.

public class Cipher

Inheritance

object

Cipher

Constructors

Cipher(CipherParameters)

Initializes an instance of Cipher class with CipherParameters.

Declaration

public Cipher(CipherParameters parameters)

Parameters

Type	Name	Description
CipherParameters	parameters	Algorithm specific parameters.

Properties

Parameters

Gets algorithm specific parameters.

Declaration

public CipherParameters Parameters { get; }

Property Value

Type	Description
CipherParameters	Algorithm specific parameters.

Methods

Decrypt(string, string, byte[])

Decrypts data using selected key and the algorithm.

Declaration

public byte[] Decrypt(string keyAlias, string password, byte[] cipherText)

Parameters

Type	Name	Description
string	keyAlias	Alias of the key to be used for decryption.
string	password	Password used in decrypting a key value.
byte[]	cipherText	Data to be decrypted.

Returns

Type	Description
byte[]	Decrypted data.

Remarks

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

Exceptions

Type	Condition
System.ArgumentNullException	Thrown when keyAlias or cipherText is null.
System.ArgumentException	Thrown when mandatory algorithm parameter is missing or invalid. Thrown when optional algorithm parameter is invalid.
System.InvalidOperationException	Thrown when key-protecting password does not match. Thrown when key does not exist with given keyAlias.

Encrypt(string, string, byte[])

Encrypts data using selected key and algorithm.

Declaration

public byte[] Encrypt(string keyAlias, string password, byte[] plainText)

Parameters

Type	Name	Description
string	keyAlias	Alias of the key to be used for encryption.
string	password	Password used in decrypting a key value.
byte[]	plainText	Data to be encrypted.

Returns

Type	Description
byte[]	Encrypted data.

Remarks

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

Exceptions

Type	Condition
System.ArgumentNullException	Thrown when keyAlias or plainText is null.
System.ArgumentException	Thrown when mandatory algorithm parameter is missing or invalid. Thrown when optional algorithm parameter is invalid.
System.InvalidOperationException	Thrown when key-protecting password does not match. Thrown when key does not exist with given keyAlias.