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  2. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    Public key infrastructure. A public key infrastructure ( PKI) is a set of roles, policies, hardware, software and procedures needed to create, manage, distribute, use, store and revoke digital certificates and manage public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for a range of network ...

  3. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    Definition. A digital signature scheme typically consists of three algorithms: A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. A signing algorithm that, given a message and a private key, produces a signature.

  4. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    Public key certificate. In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [1] [2] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the ...

  5. Chaves, Portugal - Wikipedia

    en.wikipedia.org/wiki/Chaves,_Portugal

    Chaves ( Portuguese pronunciation: [ˈʃavɨʃ] ⓘ) is a city and a municipality in the north of Portugal. It is 10 km south of the Spanish border and 22 km south of Verín (Spain). The population of the entire municipality in 2011 was 41,243, [1] in an area of 591.23 km 2. [2] The municipality is the second most populous of the district of ...

  6. Mobile device - Wikipedia

    en.wikipedia.org/wiki/Mobile_device

    Mobile device. An iPhone ( smartphone) and iPad ( tablet )—two examples of mobile devices. A mobile device or handheld computer is a computer small enough to hold and operate in the hand. Mobile devices are typically battery-powered and possess a flat-panel display and one or more built-in input devices, such as a touchscreen or keypad.

  7. 7 best cashback apps to stretch your dollar — and earn ...

    www.aol.com/finance/best-cash-back-apps...

    Get cash back by digital gift card. ⭐ User ratings Apple Store: 4.6 out of 5 stars (10.3K reviews) Google Play: 2.4 out of 5 stars (1.3K reviews) Pros. Dining rewards of up to 30%;

  8. EMV - Wikipedia

    en.wikipedia.org/wiki/EMV

    The ARQC is sent in the authorisation message. The card generates the ARQC. Its format depends on the card application. EMV does not specify the contents of the ARQC. The ARQC created by the card application is a digital signature of the transaction details, which the card issuer can check in real time. This provides a strong cryptographic ...

  9. List of digital keys in mobile wallets - Wikipedia

    en.wikipedia.org/wiki/List_of_digital_keys_in...

    Digital keys that operate over NFC and/or UWB are compatible with a variety of mobile wallets.These digital keys can be stored in smart devices through the use of mobile wallets that have access to the device's embedded secure element, such as Google Wallet and Samsung Wallet for Android, Huawei Wallet for HarmonyOS, or Apple Wallet for iOS and watchOS.