com.licel.jcardsim.crypto
Class KeyAgreementImpl
java.lang.Object
javacard.security.KeyAgreement
com.licel.jcardsim.crypto.KeyAgreementImpl
public class KeyAgreementImpl
- extends KeyAgreement
Implementation KeyAgreement based
on BouncyCastle CryptoAPI
- See Also:
KeyAgreement,
ECDHBasicAgreement,
ECHDCBasicAgreement
|
Method Summary |
short |
generateSecret(byte[] publicData,
short publicOffset,
short publicLength,
byte[] secret,
short secretOffset)
Generates the secret data as per the requested algorithm using the
PrivateKey specified during initialization and the public key data
provided. |
byte |
getAlgorithm()
Gets the KeyAgreement algorithm. |
void |
init(PrivateKey privateKey)
Initializes the object with the given private key. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
KeyAgreementImpl
public KeyAgreementImpl(byte algorithm)
init
public void init(PrivateKey privateKey)
throws CryptoException
- Description copied from class:
KeyAgreement
- Initializes the object with the given private key.
- Specified by:
init in class KeyAgreement
- Parameters:
privateKey - the private key
- Throws:
CryptoException - with the following reason codes:
CryptoException.ILLEGAL_VALUE if the input key type
is inconsistent with the KeyAgreement algorithm,
for example, if the KeyAgreement
algorithm is ALG_EC_SVDP_DH and the key type is
TYPE_RSA_PRIVATE, or if privKey is
inconsistent with the implementation.CryptoException.UNINITIALIZED_KEY if privKey
is uninitialized, or if the KeyAgreement algorithm
is set to ALG_EC_SVDP_DHC and the cofactor, K,
has not been successfully initialized since the time the initialized
state of the key was set to false.
getAlgorithm
public byte getAlgorithm()
- Description copied from class:
KeyAgreement
- Gets the KeyAgreement algorithm.
- Specified by:
getAlgorithm in class KeyAgreement
- Returns:
- the algorithm code defined above
generateSecret
public short generateSecret(byte[] publicData,
short publicOffset,
short publicLength,
byte[] secret,
short secretOffset)
throws CryptoException
- Description copied from class:
KeyAgreement
- Generates the secret data as per the requested algorithm using the
PrivateKey specified during initialization and the public key data
provided.
Note that in the case of the algorithms ALG_EC_SVDP_DH and ALG_EC_SVDP_DHC
the public key data provided should be the public elliptic curve
point of the second party in the protocol, specified as per ANSI X9.62.
A specific implementation need not support the compressed form,
but must support the uncompressed form of the point.
- Specified by:
generateSecret in class KeyAgreement
- Parameters:
publicData - buffer holding the public data of the second partypublicOffset - offset into the publicData buffer at which the data beginspublicLength - byte length of the public datasecret - buffer to hold the secret outputsecretOffset - offset into the secret array at which to start writing
the secret
- Returns:
- byte length of the secret
- Throws:
CryptoException - with the following reason codes:
CryptoException.ILLEGAL_VALUE if the publicData
data format is incorrect, or if the publicData data
is inconsistent with the PrivateKey specified during initialization.
CryptoException.INVALID_INIT if this KeyAgreement
object is not initialized.
