Further levels of editing have also been proposed, including: a late 8th century edition pointing to Hezekiah of Judah as the model for kingship ; an earlier 8th century version with a similar message but identifying Jehu of Israel as the ideal king ; and an even earlier version promoting the House of David as the key to national well-being.

A key must be selected before using a cipher to encrypt a message.

* Key size, i. e., the size of key used to encrypt a message.

Shannon's work on information theory showed that to achieve so called perfect secrecy, it is necessary for the key length to be at least as large as the message to be transmitted and only used once ( this algorithm is called the One-time pad ).

A message encrypted with an elliptic key algorithm using a 109-bit long key has been broken by brute force.

Al-Manar, the self-proclaimed " Station of the Resistance ," ( qanat al-muqawama ) is a key player in what Hezbollah calls its " psychological warfare against the Zionist enemy " and an integral part of Hezbollah's plan to spread its message to the entire Arab world.

A key measure of information is known as entropy, which is usually expressed by the average number of bits needed to store or communicate one symbol in a message.

SHA-1 HMAC Generation. In cryptography, a hash-based message authentication code ( HMAC ) is a specific construction for calculating a message authentication code ( MAC ) involving a cryptographic hash function in combination with a secret cryptographic key.

function hmac ( key, message )

For example, one might assume the same security that HMAC provides could be achieved with MAC = H ( key ∥ message ).

However, this method suffers from a serious flaw: with most hash functions, it is easy to append data to the message without knowing the key and obtain another valid MAC (" length-extension attack ").

H ( key ∥ message ∥ key ) is better, however various security papers have suggested vulnerabilities with this approach, even when two different keys are used.

Vernam's system was a cipher that combined a message with a key read from a punched tape.

Each character in a message was electrically combined with a character on a paper tape key.

The message is encrypted using a symmetric encryption algorithm, which requires a symmetric key.

The encrypted message along with the encrypted session key is sent to the receiver.

To do so, PGP computes a hash ( also called a message digest ) from the plaintext, and then creates the digital signature from that hash using the sender's private key.

In some related signature schemes, the private key is used to Digital signature | sign a message ; anyone can check the signature using the public key.

Although it is computationally easy for the intended recipient to generate the public and private keys, to decrypt the message using the private key, and easy for the sender to encrypt the message using the public key, it is extremely difficult ( or effectively impossible ) for anyone to derive the private key, based only on their knowledge of the public key.

During the Second Vatican Council, he played a key role in persuading the assembly of the Catholic bishops to adopt the Council's ground-breaking Declaration on Religious Liberty, Dignitatis Humanae.

The key word in my plays is ' perhaps ' ''.

We know that much is made of the multiplicity and ambiguity of the identities that cluster around the key symbol of the Jew.

The symposium provides an opportunity to confront the self with specific statements which were made at particular times by identifiable communicators who were addressing definite audiences -- and throughout several hundred pages everyone is talking about the same key symbol of identification.

This is the key fact emerging from Sunday's national election.

But the key revelation is not new.

A romantic is one who thinks the world is divinely inspired and all he has to do is find the right key, and then divine justice and altruism will appear.

The long-range objective is to bring about consolidation of ownership through use of land exchange authority and through purchase on a moderate scale of inholdings which comprise key tracts for recognized National Forest programs such as recreation development, or which are a source of damage to lands in National Forests and National Grasslands.

otherwise, you'll have to spend a few minutes to either attach a suitable spring clip somewhere on the press head or fit the key to a length of light chain and fasten to the bottom of the motor mount so that the key is out of the way when not in use.

The key to effective marketing is wrapped up in defining your company's marketing problems realistically.

A new low capacity meter is the key that unlocks the situation at Oakwood Heights.

The phrasing is irregular, and the abrupt key changes have a primitive forcefulness.

Rangoni's first entrance is a musical shock, a sudden open fifth in a key totally unrelated to what has preceded it.

The key to the world of geology is change ; ;

I submit that this is the key problem of international relations, that it always has been, that it always will be.

The soldiers are fighting and the Americans are helping, he said, but in the fight against the Pathet Lao the key factor is the villager himself.

The key to Protestant development, therefore, is economic integration of the nucleus of the congregation.

I said `` Darn it, that's the automatic signal that shows when the ignition key is on.

And the key to the suite is still missing ''.

Mr. Schaefer also recommended that the snow emergency route plan, under which parking is banned on key streets and cars are required to use snow tires or chains on them, should be `` strictly enforced ''.

`` Convenience is therefore the key to the housing market today.

A publicity release from Oregon Physicians Service, of which Harvey is president, quoted him as saying the welfare office move to Salem, instead of `` crippling '' the agency, had provided an avenue to correct administrative weaknesses, with the key being improved communications between F & A and the commission staff.

Now a quiet-spoken, middle-aged man, Fiedler is an aeronautical engineer for Lockheed's Missiles and Space Division at Sunnyvale, where he played a key role in the development of the Navy's Polaris missile.