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The Digital Signature Algorithm ( DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. DSA is a variant of the Schnorr and ElGamal signature schemes.
This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible. However, some file signatures can be ...
In cryptography, a Schnorr signature is a digital signature produced by the Schnorr signature algorithm that was described by Claus Schnorr. It is a digital signature scheme known for its simplicity, among the first whose security is based on the intractability of certain discrete logarithm problems.
Create, add, delete, or set a default email signature in AOL Desktop Gold. Give your emails a finishing touch by creating up to five email signatures within Desktop Gold.
1. Click the Settings Menu icon | select More Settings . 2. Click Writing email. 2. Click the Toggle button to enable or disable a signature for your email address. 3. Enter or edit your signature in the text box. Learn how to create, change, or turn off your signature to express how you feel today.
Personalize how you write emails, manage your incoming messages, the general look of your inbox, and more. 1. Sign in to AOL Mail. 2. Next to your username, click Settings | More settings. 3. Click the tab for the setting you want to change.
In mathematics, for given real numbers a and b, the logarithm log b a is a number x such that b x = a. Analogously, in any group G , powers b k can be defined for all integers k , and the discrete logarithm log b a is an integer k such that b k = a .
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Signature (logic) In logic, especially mathematical logic, a signature lists and describes the non-logical symbols of a formal language. In universal algebra, a signature lists the operations that characterize an algebraic structure. In model theory, signatures are used for both purposes.
A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature on a message gives a recipient confidence that the message came from a sender known to the recipient.