Elliptic Curve Cryptography (ECC) has been gaining momentum as a replacement for RSA public key cryptography largely based on its efficiency, but also because the US National Security Agency (NSA) included it, while excluding RSA, from its Suite B cryptography recommendations. Suite B is a set of algorithms that the NSA recommends for use in protecting both classified and unclassified US government information and systems. Public key cryptography is the basis for tools like ssh as well as Secure Sockets Layer (SSL) for encrypting web traffic. For readers who would like more information, a nice introduction to public key cryptography and the RSA algorithm can be found on Wikipedia. . . Elliptic Curve Cryptography (ECC) has been gaining momentum as a replacement for RSA public key cryp. elliptic, curve, cryptography, (ecc), gaining, momentum, replacement, public. . LinuxSecurity.com Team
The trick of public key encryption -- the best known approach is called RSA for the initials of its inventors -- is that one key can be used to scramble the data while a different, mathematically related, key is used to unscramble it. When you download a digitally signed program, the first thing your computer does is check the Web site's digital certificate. It then queries the CA that issues the certificate to make sure it's still valid and to obtain the public key. . . .. The trick of public key encryption -- the best known approach is called RSA for the initials of its inventors -- is that one key can be used to scramble the data while a different, mathematically related, key is used to unscramble it. When you download a digitally signed program, the first thing your computer does is check the Web site's digital certificate. It then queries the CA that issues the certificate to make sure it's still valid and to obtain the public key. When the download is complete, your computer uses the public key to decrypt the message digest. It also runs the same one-way hash procedure on the downloaded software. If everything is as it should be, the decrypted message digest and the one just created should be identical. If they differ by a single bit, so The link for this article located at MSNBC is no longer available. . Digital signatures use RSA encryption to ensure both data integrity and authentication for software downloads, enhancing user trust and security during transactions. Public Key Encryption, Digital Signature Process, RSA Implementation, Data Integrity, Certificate Authority. . LinuxSecurity.com Team
The GNU bc threaded code compiler, included with most Linux distributions, provides arbitrary precision arithmetic that can handle the large numbers used in modern cryptography. Here we use the bc compiler to explore Diffie-Hellman public key encryption. . .. The GNU bc threaded code compiler, included with most Linux distributions, provides arbitrary precision arithmetic that can handle the large numbers used in modern cryptography. Here we use the bc compiler to explore Diffie-Hellman public key encryption . Communicating "in the clear", Alice and Bob select two numbers, q and n. Alice then selects the secret number xa. Bob selects the secret number xb. From the two public numbers, q and n, and her secret number xa, Alice calculates ya and sends the number to Bob. Using the same two public numbers, q and n, and his secret number xb, Bob calculates yb and sends the number to Alice. Alice and Bob have completed step one of the Diffie-Hellman process. The link for this article located at LinuxJournal is no longer available. . The GNU bc threaded code compiler, included with most Linux distributions, provides arbitrary precis. threaded, compiler, linux, distributions, provides, arbitrary, precis. . LinuxSecurity.com Team
A law that would allow electronic signatures to seal legally binding documents is scheduled to take effect on Oct. 1, but don't throw away your pens just yet. Electronic signatures aren't simply digital representations of the handwritten variety. In fact, they're . . . . A law that would allow electronic signatures to seal legally binding documents is scheduled to take effect on Oct. 1, but don't throw away your pens just yet. Electronic signatures aren't simply digital representations of the handwritten variety. In fact, they're generally invisible. The leading signature technologies depend on coded messages and certificates, using what is called public key encryption. Messages are passed through a trusted third party, to assure that the transaction originated with a legitimate sender and that no one has tampered with it. The link for this article located at Dallas Morning News is no longer available. . A recent legislative update introduces provisions for the use of electronic signatures in formal agreements. This article explores essential security measures related to this advancement.. Digital Signatures, Electronic Transactions, Public Key Security, Legally Binding Signatures. . LinuxSecurity.com Team
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