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Amino acid activation (also known as aminoacylation or tRNA charging) refers to the attachment of an amino acid to its respective transfer RNA (tRNA). The reaction occurs in the cell cytosol and consists of two steps: first, the enzyme aminoacyl tRNA synthetase catalyzes the binding of adenosine triphosphate (ATP) to a corresponding amino acid, forming a reactive aminoacyl adenylate ...
There are also people who choose to have a password-protected screensaver set to activate after some period of inactivity, thereby requiring the user to re-enter their login credentials to unlock the screensaver and gain access to the system. Methods of Logging In. They include: Image recognition; Fingerprints scanning; eye scan
These vectors will be assigned to individual users and are called the code, chip code, or chipping code. In the interest of brevity, the rest of this example uses codes v with only two bits. Each user is associated with a different code, say v. A 1 bit is represented by transmitting a positive code v, and a 0 bit is represented by a negative ...
The Key Management Interoperability Protocol (KMIP) is an extensible communication protocol that defines message formats for the manipulation of cryptographic keys on a key management server. This facilitates data encryption by simplifying encryption key management.
A password policy is a set of rules designed to enhance computer security by encouraging users to employ strong passwords and use them properly. A password policy is often part of an organization's official regulations and may be taught as part of security awareness training. Either the password policy is merely advisory, or the computer ...
In software licensing, volume licensing is the practice of using one license to authorize software on a large number of computers and/or for a large number of users. . Customers of such licensing schemes are typically business, governmental or educational institutions, with prices for volume licensing varying depending on the type, quantity and applicable subscripti
HMAC-SHA1 generation. In cryptography, an HMAC (sometimes expanded as either keyed-hash message authentication code or hash-based message authentication code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key.
The connection between an action line and a lifeline shows the interaction between the actor or system. Messages will often appear at the top or bottom of a system sequence diagram to illustrate the action in detail. For example, a request by an actor to log in would be represented by login (username, password).