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30-07-2009, 05:27 PM
Post: #1
Palladium Cryptography (Download Seminar Report)
As we tend towards a more and more computer centric world, the concept of data security has attained a paramount importance. Though present day security systems offer a good level of protection, they are incapable of providing a trust worthy environment and are vulnerable to unexpected attacks. Palladium is a content protection concept that has spawned from the belief that the pc, as it currently stands, is not architecturally equipped to protect a user forms the pitfalls and challenges that an all-pervasive network such as the Internet poses.

As a drastic change in pc hardware is not feasible largely due to economic reasons, palladium hopes to introduce a minimal change in this front. A paradigm shift is awaited in this scenario with the advent of usage of palladium, thus making content protection a shared concern of both software and hardware. In the course of this paper the revolutionary aspects of palladium are discussed in detail.

A case study to restructure the present data security system of JNTU examination system using palladium is put forward.

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03-06-2010, 06:22 AM
Post: #2
RE: Palladium Cryptography (Download Seminar Report)
how to get full report of this technology..??
03-06-2010, 06:46 AM
Post: #3
RE: Palladium Cryptography (Download Seminar Report)
am here going to post Palladium Cryptography seminar report...please read and download the attachment

.docx  Palladium Cryptography.docx (Size: 204.16 KB / Downloads: 496)
Palladium Cryptography


As we tend towards a more and more computer centric world, the concept of data security has attained a paramount importance. Though present day security systems offer a good level of protection, they are incapable of providing a "trust worthy" environment and are vulnerable to unexpected attacks. Palladium is a content protection concept that has spawned from the belief that the pc, as it currently stands, is not architecturally equipped to protect a user forms the pitfalls and challenges that an all-pervasive network such as the Internet poses.
As a drastic change in pc hardware is not feasible largely due to economic reasons, palladium hopes to introduce a minimal change in this front. A paradigm shift is awaited in this scenario with the advent of usage of palladium, thus making content protection a shared concern of both software and hardware. In the course of this paper the revolutionary aspects of palladium are discussed in detail.
A case study to restructure the present data security system of JNTU examination system using palladium is put forward.


Need for security:
Many organizations posses valuable information they guard closely. As more of this information is stored in computers the need of data security becomes increasingly important. Protecting this information against unauthorized usage is therefore a major concern for both operating systems and users alike.

Threats of data:

From a security perspective computer systems have 3 general goals with corresponding threats to them as listed below:
The first one data confidentiality is concerned with secret data remaining secret. More specifically if the owner of some data has decided that the data should be available
only to certain people and no others, then the system should guarantee that release of data to unauthorized people does not occur. Another aspect of this is individual privacy.
The second goal, data integrity, means that unauthorized users should not be able to modify any data without the owner's permission. Data modification in this context includes not only changing the data, but also removing data and adding false data as well. Thus it is very important that a system should guarantee that data deposited in it remains unchanged until the owner decides to do so.
The third goal, system availability, means that nobody can disturb the system to make unstable. It must be able to ensure that authorized persons have access to the data and do not suffer form denial of service. The most classical example of a threat it this is excessive 'PING'ing of a web site, in order to slow it down.
Types of data threats: Intruders:
In security literature people who are nosing around places where they have no business being are called intruders or sometimes adversaries. Intruders can be broadly divided as passive and active. Passive intruders just want to read the files they are not authorized to. Active intruders are more malicious and intend to make unauthorized changes to data. Some of the common activities indulged by intruders are:
¦ Casual Prying: non-technical users who wish to read other people's e-mail and private files mostly do this.
¦ Snooping: This term refers to the breaking of the security of a shared computer system or a server. Snooping is generally done as a challenge and is not aimed at stealing or tampering of confidential data.
¦ Commercial Espionage: This refers to the determined attempts to make money using secret data. For example an employee in an organization can secure sensitive data and sell it away to rival companies for monetary gains.
It is very important that potential intruders (and their corresponding activities) are taken into consideration before devising a security system. This is essential as the level of threat and intended damage differ from one to another. Virus:
Basically a virus is a piece of code that replicates itself and usually does some damage. In a sense the writer of a virus is also an intruder, often with high technical skills. In the same breath it must be said that a virus need not always be intentional and can simply be a code with disastrous run time errors. The difference between a conventional intruder and a virus is that the former refers to person who is personally trying to break into a system to cause damage whereas the latter is a program written by such a person and then released into the world hoping it causes damage.
The most common types of viruses are: executable program viruses, memory resident viruses, boot sector viruses, device driver viruses, macro viruses, source code viruses, Trojan horses etc.


Cryptography: Cryptography is the method in which a message or file, called plain text, is taken and encrypted into cipher text in such a way that only authorized people know how to convert it back to plane text. This is done commonly in four ways:
Secret key cryptography, public key cryptography, one way function cryptography and digital signatures. Unless the encryption technique used is very complex it is possible, with some effort, for crackers to decrypt files.
User authentication: It is a method employed by the operating system or a program of a computer to determine the identity of a user. Types of user authentication are:
Authentication using passwords, authentication using physical objects (like smart cards, ATM cards etc.), authentication using biometrics (like Finger prints, retinal pattern scan, signature analysis, voice recognition etc.). Inherent problems of user authentication are password cracking, duplication of physical objects and simulation of biometrics by artificial objects.
Anti-virus software: an anti virus software scans every executable file on a computer's disk looking for viruses known in its database. It then repairs, quarantines or deletes an infected files. However a clever virus can infect the anti-virus software itself. Some of the popular anti-virus soft wares are Norton, PCcillin, MCcafee etc.
Firewalls: it is a method of preventing unauthorized access to a computer system often found in network computes. A firewall is designed to provide normal service to authorized users while at the same time preventing unauthorized users from gaining access to the system. In reality they add a level of inconvenience to legal users and their ability to control illegal access may be questionable.

Palladium-"a revolutionary breakthrough in data security"

Palladium is the code name for a revolutionary set of "features" for the "windows" operating system. The code name of this initiative -"palladium", is a moniker drawn from the Greek mythological goddess of wisdom and protector of civilized life.
Till date most forms of data security have been software oriented with little or no hardware involvement. Palladium can be touted as the first technology to develop software-hardware synchronization for better data security. Hardware changes incorporated by palladium are reflected in the key components of the CPU, a motherboard chip (cryptographic co-processor), input and output components such as the graphics processor etc.
When combined with a new breed of hardware and applications, these "features" will give individuals and groups of user's greater data security, personal privacy, and system integrity. In addition, palladium will offer enterprise consumers significant new benefits for network security and content protection.
Core principles of the palladium initiative:
> Palladium is not a separate operating system. It is based in architectural enhancements to the windows kernel and to computer hardware, including the CPU, peripherals and chipsets, to create a new trusted execution subsystem (see figure 1).
> Palladium will not eliminate any features of windows that users have come to rely on; everything that runs today will continue to run with palladium.
> It is important to note that while today's applications and devices will continue to work in "palladium", they will gain little to no benefit from "palladium" environment or new applications must be written.
> In addition, palladium does not change what can be programmed or run on the computing platform. Palladium will operate with any program the user specifies while maintaining security.


Palladium comprises two key components: hardware and software. Hardware components
Engineered for ensuring the protected execution of applications and processes, the protected operating environment provides the following basic mechanisms:
Trusted space (or curtained memory): This is an execution space is protected form external software attacks such as a virus. Trusted space is set up and maintained by the nexus and has access to various services provided by palladium, such as sealed storage. In other words it is protected R.A.M.
Sealed storage: Sealed storage is an authenticated mechanism that allows a program to store secrets that cannot be retrieved by non-trusted programs such as a virus or Trojan horse. Information in sealed storage can't be read by other non-trusted programs (sealed storage cannot be read by unauthorized secure programs, for that matter, and cannot be read even if another operating system is booted or the disk is carried to another machine.) these stored secrets can be tied to the machine, the nexus or the application. Palladium will also provide mechanisms for the safe and controlled backup and migration of secrets to other machines. In other words it is a secured and encrypted part of the hard disk.
Secure input and output: A secure path from the keyboard and mouse to palladium applications and a secure path from palladium applications to the screen ensure input-output security.
Attestation: Attestation is a mechanism that allows the user to reveal selected characteristics of the operating environment to external requestors. In reality it takes the form of an encryption co-processor. It is entrusted with the job of encryption and decryption of data "to and from" the "sealed storage".
These basic mechanisms provide a platform for building distributed trusted software.

Software components.

The following are the software components of palladium:
Nexus (a technology formerly referred to as the " trusted operating root (TOR)"): This component manages trust functionality for palladium user-mode processes (agents). The nexus executes in kernel mode in the trusted space. It provides basic services to trusted agents, such as the establishment of the process mechanisms for communicating with trusted agents and other applications, and special trust services such as attestation of requests of requests and the sealing and unsealing of secrets.
Trusted agents: A trusted agent is a program, a part of a program, or a service that runs in user mode in the trusted space. A trusted agent calls the nexus for security-related services and critical general services such as memory management. A trusted agent is able to store secrets using sealed storage and authenticates itself using the attestation services of the nexus. One of the main principles of trusted agents is that they can be trusted or not trusted by multiple entities, such as the user, an IT department, a merchant or a vendor. Each trusted agent or entity controls its own sphere of trust and they need not trust or rely on each other.
Together, the nexus and trusted agents provide the following features:
> Trusted data storage, encryption services for applications to ensure data integrity and protection.
^ Authenticated boot, facilities to enable hardware and software to authenticate


Palladium is a new hardware and software architecture. This architecture will include a new security computing chip and design changes to a computer's central processing unit (CPU), chipsets, and peripheral devices, such as keyboards and printers. It also will enable applications and components of these applications to run in a protected memory space that is highly resistant to tempering and interference.
The pc-specific secret coding within palladium makes stolen files useless on other machines as they are physically and cryptographically locked within the hardware of the machine. This means software attacks can't expose these secrets. Even if a sophisticated hardware attack were to get at them, these core system secrets would only be applicable to the data within a single computer and could not be used on other computes.


Palladium prevents identity theft and unauthorized access to personal data on the user's device while on the internet and on other networks. Transactions and processes are verifiable and reliable through the attestable hardware and software architecture and they cannot be imitated.
With palladium, a system's secrets are locked in the computer and are only revealed on terms that the user has specified. In addition, the trusted user interface prevents snooping and impersonation. The user controls what is revealed and can separate categories of data on a single computer into distinct realms. Like a set of vaults, realms provide the assurance of separability. With distinct identifiers, policies and categories of data for each, realms allow a user to have a locked-down work environment and fully open surfing environment at the same time, on the same computer.
Finally, the " palladium" architecture will enable a new class of identity service providers that can potentially offer users choices for how their identities are represented in online transactions. These service providers can also ensure that the user is in control of policies for how personal information is revealed to others. In addition, palladium will allow users to employ identity service providers of their own choice.
From the perspective of privacy ( and anti-virus protection), one of the key benefits of palladium is the ability for users to effectibely delegate certification of code. Anyone can certify 'palladium" hardware or software, and it is expected that many companies and organizations will offer this service. Allowing multiple parties to independently evaluate and certify " palladium" capable systems means that users will be able to obtain verification of the system's operation from organizations that they trust. In addition, this will form the basis for a strong business incentive to preserve and enhance privacy and security. Moreover, palladium allows any number of trusted internal or external entities to interact with a trusted component or trusted platform.


Though palladium can provide a higher degree of much needed data security it is not without its share of problems like:
1. Software and applications have to be rewritten to synchronize with palladium or new applications must be written.
2. Changes are to be made to the existing computer hardware to support palladium.
3. It would be a long time before this technology became commonplace.


Existing system: In order to eliminate the leakage of question papers, the Jawaharlal Nehru technological university (J.N.T.U), Hyderabad, has recently decided to implement the system of electronic distribution of examination papers (EDEP) - a new method of conduct of examinations.
In this system 4 sets of question papers are generated and encrypted into a " college-
specific" C.D.
=> The encrypted CD is supplied to the examination centers about 3 days in advance. => The question papers in encrypted form are also made available on the JNTU examination website.
= Password to read the CDs is supplied one hour before the commencement of examination to the principal/chief superintendent through internet, cell phone, telephone or Fax.
= The principal soon after receipt of password decrypts the original question papers of that day using the software supplied by JNTU examination branch. The EDEP employs the method of public key cryptography. Though this system is largely stable and secure it has certain loopholes like:
1. As the encrypted question papers are also available on the Internet there is every chance of crackers downloading and trying to decrypt them.
2. This method of 4 sets of question papers has been resented by the student and teacher community alike.
3. There is every chance of failure or miss-match of the college specific C.D., due to the large number of affiliate colleges (as is been observed in some cases).
4. Also, in one case, a previous examination C.D. was mistakenly decrypted, and the question papers thus printed, distributed initially at an examination center.

Palladium-as a solution (as shown in the figure 2):

Palladium is based on the concept of trusted space. A closed sphere of trust binds data or a service, to both a set of users and to a set of acceptable applications. Due to this an unauthorized user cannot access the data or software which is based on a server.
In the revised system the encrypted question papers are put up on the J.N.T.U's palladium based server and all the affiliate colleges use college-specific palladium computers. It works as follows:
¢ A third party trusted agent (government or private programmed) is employed who is responsible for granting of access to JNTU examination server. It processes the requests and forwards only those certified by the "nexus" of the JNTU's palladium based server.
¢ If an unauthorized system (without palladium) forwards a request it is immediately rejected by the server's trusted agent. Even if an unauthorized palladium PC tries to access the server its request is rejected.
¢ The PC-specific secret coding within palladium makes stolen files useless on other machines as they are physically and cryptographically locked within the hardware of the server or trusted computer.
¢ During examinations the palladium computer of the college issues a request to the common trusted agent (of JNTU and college) via internet. This request is granted and each-particular question paper pertaining to that day is accessed by the college.


> As the process of question paper down load is highly secure, the chances of leakage are literally nil.
> Since this method is highly trustworthy a single set question paper system can be employed.
> An advanced system of Internet communication can be adopted for a broader reach, thus eliminating the role of C.D.
> Since the download of question papers is "request-specific and time bound" there can not be a case of question paper mis-match.


Today, it managers face tremendous challenges due to the inherent openness of end-user machines, and millions of people simply avoid some online transactions out of fear. However, with the usage of "palladium" systems, trustworthy, secure interactions will become possible. This technology will provide tougher security defenses and more abundant privacy benefits than ever before. With palladium, users will have unparalleled power over system integrity, personal privacy and data security.
Thus it wouldn't be exaggeration to say that palladium is all to secure the computing world in ways unimaginable.


== Modern Operating Systems by Andrew. S. Tanenbaum.
=> Digit magazine.
= Microsoft Press Pass.
== J.N.T.U website.

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16-07-2010, 09:18 PM
Post: #4
RE: Palladium Cryptography (Download Seminar Report)
hey, can any1 please send me d ppt f palladium cryptography..i need it real quick..pls help me out n if possible,mail t 2 sandheeramathew[at]
09-10-2010, 01:14 PM
Post: #5
RE: Palladium Cryptography (Download Seminar Report)

.pdf  final.doc.pdf (Size: 400.63 KB / Downloads: 339)
Cryptography is an algorithmic process of converting a plain text message to a cipher text message based on an algorithm that both the sender and receiver know, so that the cipher text message can be returned to its original, plain text form. In its cipher form, a message cannot be read by anyone other than the intended receiver. The act of converting a plain text message to its cipher text is called enciphering. Reversing that act is deciphering. Enciphering and deciphering are more commonly referred to as encryption and decryption, respectively. Cryptography concerns itself with four objectives:
1) Confidentiality (the information cannot be understood by anyone for whom
it was unintended)
2) Integrity (the information cannot be altered in storage or transit between
sender and intended receiver without the alteration being detected)
3) Non-repudiation (the creator/sender of the information cannot deny at a
later stage his or her intentions in the creation or transmission of the
4) Authentication (the sender and receiver can confirm each other’s identity
and the origin/destination of the information)
Procedures and protocols that meet some or all of the above criteria are known as crypto systems. There are a number of algorithms for performing encryption and decryption, but comparatively few such algorithms have stood the test of time. The most successful algorithms use a key. A key is simply a parameter to the algorithm that allows the encryption and decryption process to occur. There are many modern key-based cryptographic techniques. These are divided into two classes: symmetric and asymmetric (also called public/private) key cryptography. In symmetric Key cryptography, the same key is used for both encryption and decryption. In asymmetric key cryptography, one key is used for encryption and another, mathematically related key, is used for decryption.
Cryptographic algorithms are of two types:
1.1.1 Secret key or Symmetric key algorithms
1.1.2 Public key cryptographic algorithms
Symmetric-key systems are simpler and faster, but their main drawback is
that the two parties must somehow exchange the key in a secure way. Publickey
encryption avoids this problem because the public key can be distributed
in a non-secure way, and the private key is never transmitted.
Symmetric-key cryptography is sometimes called secret-Key cryptography.
The most popular symmetric-key system is the Data Encryption Standard
The study and application of asymmetric encryption systems Classical symmetric cryptographic algorithms provide a secure communication channel to each pair of users. In order to establish such a channel, the symmetric key algorithms employ a classical encryption scheme in which both the algorithm depend on the same secret key k. This key is used for both encryption and decryption. After establishing a secure communication channel, the secrecy of a message can be guaranteed. Symmetric cryptography also includes methods to detect modification s of messages and methods to verify the origin of a message. Thus, confidentiality and integrity can be accomplished using secret key techniques. In secret key algorithms we have D (k, E (k, m)) = m for each plain text m. There are many algorithms in this process .The famous ones among them are DES, IDEA etc. An encryption system in which the sender and receiver of a message share a single, common key that is used to encrypt and decrypt the message. Contrast this with public-key cryptology, which utilizes two keys - a public key to encrypt messages and a private key to decrypt them. Which use one key for encryption and another for decryption. A corresponding pair of such keys constitutes a key pair. Also called asymmetric cryptography. It is a coding system in which encryption and decryption are done with public and private keys, allowing users who don’t know each other to send secure or verifiable messages. Suppose Fred wants to send a message. He would encrypt it with his private key, which no one else knows; then, the recipient would decrypt it using Fred’s publicly available key, thus verifying that the message came from Fred. Alternately, suppose Fred wants to receive an encrypted message. The sender would encrypt the message with Fred’s public key, and only Fred would be able to decrypt it, using his private key. This method, also known as dual-key cryptography contrasts with the older secret-key or symmetric cryptography, in which the sender and recipient must agree on and use the same private key for encryption and decryption. Type of cryptography in which the encryption process is publicly available and unprotected, but in which a part of the decryption key is protected so that only a party with knowledge of both parts of the decryption process can decrypt the cipher text. In public key cryptography, keys are created in matched pairs. Encrypt with one half of a pair and only the matching other half can decrypt it. This contrasts with symmetric or secret key cryptography in which a single key known to both parties is used for both encryption and decryption. One half of each pair, called the public key, is made public. The other half, called the private key, is kept secret. Messages can then be sent by anyone who knows the public key to the holder of the private key. Encrypt with the public key and you know only someone with the matching private key can decrypt. Public key techniques can be used to create digital signatures and to deal with key management issues, perhaps the hardest part of effective deployment of symmetric ciphers. The resulting hybrid cryptosystems use public key methods to manage keys for symmetric ciphers. Many organizations are currently creating PKCs, public key infrastructures to make these benefits widely available.
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