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java.lang.Objectnet.rim.device.api.crypto.DHKeyAgreement
public final class DHKeyAgreement
Implements the Diffie-Hellman key agreement algorithm.
Diffie-Hellman ( DH ) is defined in PKCS #3 and various other spots.
DHKeyPair,
DHPublicKey,
DHPrivateKey,
DHCryptoSystem| Method Summary | ||
|---|---|---|
|
static byte[] |
generateSharedSecret(DHPrivateKey localPrivateKey,
DHPublicKey remotePublicKey,
boolean useCofactor)
Generates the shared secret using a given public key (from another party) and a private key with the option of using cofactor exponentiation. |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public static byte[] generateSharedSecret(DHPrivateKey localPrivateKey,
DHPublicKey remotePublicKey,
boolean useCofactor)
throws InvalidCryptoSystemException,
CryptoTokenException,
CryptoUnsupportedOperationException,
InvalidKeyException
localPrivateKey - The local private key to use.remotePublicKey - The remote public key to use.useCofactor - If true, a cofactor is used in the shared secret calculations. If false, it
is not used. Note that setting this value to FALSE is the most common usage.
InvalidCryptoSystemException - Thrown if the local crypto system
is different than the remote crypto system
CryptoTokenException - Thrown if there was an error communicating
with the token.
CryptoUnsupportedOperationException - Thrown if a call is made to
an unsupported operation.
InvalidKeyException - Thrown if the calculated shared secret is not contained within the expected subgroup. This
may be thrown if a small subgroup attack is detected.
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