Modifier and Type | Field and Description |
---|---|
protected KeyAgreement |
myKeyAgree |
Modifier | Constructor and Description |
---|---|
protected |
AbstractDH() |
Modifier and Type | Method and Description |
---|---|
protected abstract byte[] |
calculateE()
Lazy-called by
getE() if the public key data has not
been generated yet. |
protected abstract byte[] |
calculateK()
Lazy-called by
getK() if the shared secret data has
not been calculated yet |
protected void |
checkKeyAgreementNecessity()
Called after either public or private parts have been calculated
in order to check if the key-agreement mediator is still required.
|
byte[] |
getE() |
abstract Digest |
getHash() |
byte[] |
getK() |
boolean |
isPublicDataAvailable() |
boolean |
isSharedSecretAvailable() |
abstract void |
setF(byte[] f) |
static byte[] |
stripLeadingZeroes(byte[] x)
The shared secret returned by
KeyAgreement.generateSecret()
is a byte array, which can (by chance, roughly 1 out of 256 times) begin
with zero byte (some JCE providers might strip this, though). |
String |
toString() |
protected KeyAgreement myKeyAgree
public abstract void setF(byte[] f)
public boolean isPublicDataAvailable()
protected abstract byte[] calculateE() throws Exception
getE()
if the public key data has not
been generated yet.Exception
- If failed to generate the relevant datapublic byte[] getE() throws Exception
Exception
- If failed to calculate itpublic boolean isSharedSecretAvailable()
protected abstract byte[] calculateK() throws Exception
getK()
if the shared secret data has
not been calculated yetException
- If failed to calculate itpublic byte[] getK() throws Exception
Exception
- If failed to calculate itprotected void checkKeyAgreementNecessity()
public static byte[] stripLeadingZeroes(byte[] x)
KeyAgreement.generateSecret()
is a byte array, which can (by chance, roughly 1 out of 256 times) begin
with zero byte (some JCE providers might strip this, though). In SSH,
the shared secret is an integer, so we need to strip the leading zero(es).x
- The original arrayIllegalArgumentException
- If all zeroes arrayCopyright © 2008–2022 The Apache Software Foundation. All rights reserved.