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java.lang.Object | +--com.sshtools.j2ssh.transport.SshMessage | +--com.sshtools.j2ssh.transport.kex.SshMsgKexDhInit
Implements the diffie-hellman-group1-sha1 key exchange init message.
byte SSH_MSG_KEXDH_INIT
mpint e
The Diffie-Hellman key exchange provides a shared secret that can not be determined by either party alone. The key exchange is combined with a signature with the host key to provide host authentication.
The client generates a random number x (1 < x < q) and computes e = g^x mod p. The client sends e to the server.
Field Summary | |
protected static int |
SSH_MSG_KEXDH_INIT
The message id for this message |
Constructor Summary | |
SshMsgKexDhInit()
Constructs the message from data received |
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SshMsgKexDhInit(java.math.BigInteger e)
Constructs the message ready for sending |
Method Summary | |
protected void |
constructByteArray(ByteArrayWriter baw)
Abstract method implementation to create a byte array containing the message. |
protected void |
constructMessage(ByteArrayReader bar)
Abstract method implementation to construct the message from a byte array. |
java.math.BigInteger |
getE()
Gets the diffie hellman e value |
java.lang.String |
getMessageName()
Gets the message name for debugging |
Methods inherited from class com.sshtools.j2ssh.transport.SshMessage |
fromByteArray, getMessageId, toByteArray |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected static final int SSH_MSG_KEXDH_INIT
Constructor Detail |
public SshMsgKexDhInit(java.math.BigInteger e)
e
- The diffie hellman e valuepublic SshMsgKexDhInit()
Method Detail |
public java.lang.String getMessageName()
getMessageName
in class SshMessage
protected void constructMessage(ByteArrayReader bar) throws InvalidMessageException
constructMessage
in class SshMessage
bar
- The byte array containing the message
data.
InvalidMessageException
- Thrown is the data cannot be read.protected void constructByteArray(ByteArrayWriter baw) throws InvalidMessageException
constructByteArray
in class SshMessage
baw
- The byte array to write to.
InvalidMessageException
- Thrown if the data cannot be written.public java.math.BigInteger getE()
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