barcode dll for vb.net Asymmetric Key Cryptography in Software

Creation UPCA in Software Asymmetric Key Cryptography

Asymmetric Key Cryptography
Decoding UPC-A Supplement 2 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Painting UPC A In None
Using Barcode creation for Software Control to generate, create UPC A image in Software applications.
One major limitation of symmetric key cryptography is that the same key is required to encrypt and decrypt data. This is fine for protecting individual files from unauthorized users, but many data-protection scenarios require multiple users to interact with each other, when trust has never been established. For example, if a manager in New York needs to exchange sales data with a manager in Buffalo, and this data requires encryption, both managers could simply share the key required to decrypt the data. However, this approach has two problems. First, users tend to apply the same password and key to multiple purposes, meaning that one manager might be able to access the other manager s files; second, what if more than two managers were involved Clearly, passing a password around a user group of 1,000 users is tantamount to having no security at all! A system
UPC-A Supplement 2 Scanner In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Paint GS1 - 12 In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create UPC-A Supplement 2 image in .NET framework applications.
9:
UPC A Generator In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create UPC Symbol image in ASP.NET applications.
Encode UPC-A Supplement 2 In VS .NET
Using Barcode drawer for VS .NET Control to generate, create UPC-A image in VS .NET applications.
System Security
UPCA Generation In VB.NET
Using Barcode maker for VS .NET Control to generate, create UCC - 12 image in .NET applications.
Paint GTIN - 13 In None
Using Barcode encoder for Software Control to generate, create EAN 13 image in Software applications.
is required that allows individual users to encrypt data using one key, and for the file to be decrypted using a separate key for each user. Asymmetric encryption allows separate keys to be used for encrypting and decrypting data. How is this possible Basically, every user is assigned a private key, which they never release to anyone else, and a public key, which is supplied to other users who need to send the user encrypted data. For example, the New York manager would have a private key stored on a floppy disk, locked in a safe, as would the Buffalo manager. Both would also exchange their public keys via e-mail, or another offline method such as floppy disk, verifying that the keys were genuine by using a key fingerprints check over the telephone. To encrypt a file for the Buffalo manager, the New York manager would need to use both his/her own private key and the Buffalo manager s public key. Conversely, the Buffalo manager would need to use her private key and the New York manager s public key to encrypt a file for him. Remember that if you exchange public keys via e-mail, and have no other method of verifying who is on the other end of the line, then you re ripe for a man in the middle attack, because the person you think you are exchanging data with could be an intermediary. For example, imagine if Joe substitutes his key in place of his manager s, and manages to place his machine between a manager s machine and an external router. Now Joe is able to pretend to be his manager, issuing his own public key with his manager s name for which he actually has the corresponding private key. The most important feature (or limitation, depending on your requirements) of asymmetric key cryptography is that obtaining the private key used to encrypt data is not sufficient to decrypt that data: only the private key of the individual whose public key was used for signing can be used for this purpose. This can be very important in situations where data may be compromised in a specific location. For example, an embassy in a foreign country under threat of attack may decide to encrypt all data by using the public key of an officer in the State Department in Washington, send it via e-mail, and then delete the on-site originals. Even if the encrypted data and the embassy s private key were obtained by force, they could not be used to decrypt the data. Of course, asymmetry implies that if you lose your original data accidentally, you must rely on the public key holder s private key to decrypt the data. However, at least one avenue of recourse is available, unlike when using symmetric key cryptography, where a lost key almost certainly means lost data.
Code 128 Creator In None
Using Barcode generation for Software Control to generate, create Code 128A image in Software applications.
Barcode Encoder In None
Using Barcode creator for Software Control to generate, create bar code image in Software applications.
Encoding UCC - 12 In None
Using Barcode encoder for Software Control to generate, create EAN128 image in Software applications.
Painting UPCA In None
Using Barcode generator for Software Control to generate, create UPC Symbol image in Software applications.
DUN - 14 Generator In None
Using Barcode creator for Software Control to generate, create EAN / UCC - 14 image in Software applications.
Draw Linear Barcode In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create 1D image in ASP.NET applications.
Code 3 Of 9 Creator In None
Using Barcode creator for Microsoft Excel Control to generate, create Code 3 of 9 image in Microsoft Excel applications.
Scan Code 128C In Visual C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications.
Bar Code Creator In Objective-C
Using Barcode printer for iPhone Control to generate, create bar code image in iPhone applications.
Barcode Maker In VS .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
USS-128 Generator In Java
Using Barcode creator for Android Control to generate, create EAN 128 image in Android applications.
Create EAN 13 In Objective-C
Using Barcode creation for iPhone Control to generate, create EAN-13 Supplement 5 image in iPhone applications.
Copyright © OnBarcode.com . All rights reserved.