javacard.security

Interface KoreanSEEDKey

All Superinterfaces:

Key, SecretKey

public interface KoreanSEEDKey
extends SecretKey

KoreanSEEDKey contains an 16-byte key for Korean Seed Algorithm operations.

When the key data is set, the key is initialized and ready for use.

Since:

2.2.2

See Also:

KeyBuilder, Signature, javacardx.crypto.Cipher, javacardx.crypto.KeyEncryption

Method Summary

Methods

Modifier and Type	Method and Description
byte	getKey(byte[] keyData, short kOff) Returns the Key data in plain text.
void	setKey(byte[] keyData, short kOff) Sets the Key data.

Methods inherited from interface javacard.security.Key

clearKey, getSize, getType, isInitialized

Method Detail

setKey

void setKey(byte[] keyData,
          short kOff)
            throws CryptoException,
                   NullPointerException,
                   ArrayIndexOutOfBoundsException

Sets the Key data. The plain text length of input key data is The data format is big-endian and right-aligned (the least significant bit is the least significant bit of last byte). Input key data is copied into the internal representation.

Note:

• If the key object implements the javacardx.crypto.KeyEncryption interface and the Cipher object specified via setKeyCipher() is not null, keyData is decrypted using the Cipher object.

Parameters:

keyData - byte array containing key initialization data

kOff - offset within keyData to start

Throws:

CryptoException - with the following reason code:

• CryptoException.ILLEGAL_VALUE if input data decryption is required and fails.

ArrayIndexOutOfBoundsException - if kOff is negative or the keyData array is too short

NullPointerException - if the keyData parameter is null

getKey

byte getKey(byte[] keyData,
          short kOff)

Returns the Key data in plain text. The length of output key data is 16 bytes for Korean Seed Algorithm. The data format is big-endian and right-aligned (the least significant bit is the least significant bit of last byte).

Parameters:

keyData - byte array to return key data

kOff - offset within keyData to start

Returns:

the byte length of the key data returned

Throws:

CryptoException - with the following reason code:

• CryptoException.UNINITIALIZED_KEY if the key data has not been successfully initialized since the time the initialized state of the key was set to false.

See Also:

Key