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Functional encryption (FE) is a generalization of public-key encryption in which possessing a secret key allows one to learn a function of what the ciphertext
Functional_encryption
Cryptographic primitives that involve lattices
include fully homomorphic encryption, indistinguishability obfuscation, cryptographic multilinear maps, and functional encryption. Lattice problems Learning
Lattice-based_cryptography
American cryptographer (born 1974)
co-invention of indistinguishability obfuscation, attribute-based encryption, and functional encryption. In 2020, Sahai and collaborators resolved a central open
Amit_Sahai
Form of encryption that allows computation on ciphertexts
Homomorphic encryption is a form of encryption that allows computations to be performed on encrypted data without first having to decrypt it. The resulting
Homomorphic_encryption
Standard for the encryption of electronic data
The Advanced Encryption Standard (AES), also known by its original name Rijndael (Dutch pronunciation: [ˈrɛindaːl], RAIN-dahl), is a specification for
Advanced_Encryption_Standard
Type of cryptographic software obfuscation
public-key cryptography and more exotic ones such as deniable encryption and functional encryption (which are types of cryptography that no-one previously knew
Indistinguishability obfuscation
Indistinguishability_obfuscation
Hypothesis in computational complexity theory
candidate for indistinguishability obfuscation and functional encryption (multilinear jigsaw puzzles) The most fundamental computational
Computational hardness assumption
Computational_hardness_assumption
Early unclassified symmetric-key block cipher
The Data Encryption Standard (DES /ˌdiːˌiːˈɛs, dɛz/) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of
Data_Encryption_Standard
W3C specification for XML element encryption
ISBN 978-1-4503-0948-6. Hirsch, F., ed. (11 April 2013). "Functional Explanation of Changes in XML Encryption 1.1". W3C. Somorovsky, J.; Schwenk, J. (June 2012)
XML_Encryption
American computer scientist
2005, Waters first proposed the concepts of attribute-based encryption and functional encryption with Amit Sahai. Waters was awarded the Sloan Research Fellowship
Brent_Waters
Computer scientist at UC Berkeley
Intelligence Laboratory developed CryptDB, a new technology for homomorphic encryption in SQL databases. A 2024 paper described CryptDB as "the first encrypted
Raluca_Ada_Popa
Wireless radio communication protocol
connection for which they were created and usually serve as the functional encryption/decryption mechanism. A specific header field indicates which of
Wireless_USB
Practice and study of secure communication techniques
Cryptosystems (e.g., El-Gamal encryption) are designed to provide particular functionality (e.g., public key encryption) while guaranteeing certain security
Cryptography
End-to-end encrypted email service
Proton Wallet, Proton Meet, and Lumo AI. Proton Mail uses client-side encryption to protect email content and user data before they are sent to Proton
Proton_Mail
NSA certification system
registered by NIST and published in a FIPS. NSA encryption systems, for a historically oriented list of NSA encryption products (most of them Type 1). NSA cryptography
NSA_product_types
Swiss technology company
company would never build an encryption backdoor, and that it wouldn't open a "front door" either by removing end-to-end encryption. In March 2025, the company
Proton_AG
Israeli cryptographer (born 1966)
Waters (2013). "Candidate Indistinguishability Obfuscation and Functional Encryption for all Circuits". 2013 IEEE 54th Annual Symposium on Foundations
Shai_Halevi
Aspect of US National Security Agency
National Security Agency took over responsibility for all US government encryption systems when it was formed in 1952. The technical details of most NSA-approved
NSA_encryption_systems
Java application programming interface
the Transport Layer Security (TLS) protocols. It includes functionality for data encryption, server authentication, message integrity, and optional
Java_Secure_Socket_Extension
This is a technical feature comparison of different disk encryption software. Hidden containers: Whether hidden containers (an encrypted container (A)
Comparison of disk encryption software
Comparison_of_disk_encryption_software
Computer network protocol
VPNs use various forms of UDP for this same functionality. The PPTP specification does not describe encryption or authentication features and relies on the
Point-to-Point Tunneling Protocol
Point-to-Point_Tunneling_Protocol
Precedent-setting American court case about freedom to publish encryption software
case brought by Peter Junger challenging restrictions on the export of encryption software outside of the United States. The Sixth Circuit court ruled that
Junger_v._Daley
Package of disk encryption software for Linux
of disk encryption software for Linux. Its implementation is a POSIX-compliant filesystem-level encryption layer, aiming to offer functionality similar
ECryptfs
Messaging and VoIP service owned by Meta
criticized for its lack of encryption, sending information as plaintext. Encryption was first added in May 2012. End-to-end encryption was only fully implemented
Instant messaging app by Meta Platforms
standalone apps support using multiple accounts, conversations with end-to-end encryption, and playing games. There are also group chats where you can connect with
Facebook_Messenger
Discontinued source-available disk encryption utility
a discontinued source-available freeware utility used for on-the-fly encryption (OTFE). It can create a virtual encrypted disk within a file, encrypt
TrueCrypt
Transfer from the United States to another country of technology related to cryptography
period the market for cryptography was almost entirely military, the encryption technology (techniques as well as equipment and, after computers began
Export of cryptography from the United States
Export_of_cryptography_from_the_United_States
Feature in Microsoft Windows
feature introduced in version 3.0 of NTFS that provides filesystem-level encryption. The technology enables files to be transparently encrypted to protect
Encrypting_File_System
protocol for email clients aiming to simplify key exchange and enabling encryption. [citation needed] Version 1.0 of the Autocrypt specification was released
Autocrypt
Mobile communication protocol based on mobile service
Phone Link. Google Messages was the first client to offer end-to-end encryption (E2EE) over RCS. E2EE using Messaging Layer Security (MLS) was added to
Rich_Communication_Services
Group of reports produced in an audit
need to know basis. Applies to various types of sensitive information. Encryption Access controls Firewalls Processing Integrity – system processing is
System and organization controls
System_and_organization_controls
Computer program used to access and manage a user's email
spam. With no encryption, much like for postcards, email activity is plainly visible by any occasional eavesdropper. Email encryption enables privacy
Email_client
Privacy-focused encrypted messaging app
Android in 2023, the app now secures all communications with end-to-end encryption. The client software includes mechanisms by which users can independently
Signal_(software)
Cross-platform instant messaging service
Linux, Wear OS, watchOS and web browsers. Telegram offers end-to-end encryption in voice and video calls, and optionally in private chats if both participants
Telegram_(software)
image encryption scheme which was based on SCAN language. Later on, with the emergence of chaos-based cryptography hundreds of new image encryption algorithms
Chaotic_cryptology
Encryption standard
documents augment its functionality, one example being PGP/MIME which defines the use of OpenPGP in email via MIME. OpenPGP's encryption can ensure the secure
OpenPGP
users and strong encryption algorithms essentially make such functionality redundant. As the encryption keys used in hardware encryption are typically never
USB_flash_drive_security
Standard for public key encryption and signing of MIME data
(Secure/Multipurpose Internet Mail Extensions) is a standard for public-key encryption and signing of MIME data. S/MIME is on an IETF standards track and defined
S/MIME
Type of standardized secure cryptoprocessors
from a trusted combination of hardware and software and storing disk encryption keys. A TPM 2.0 implementation is part of the Windows 11 system requirements
Trusted_Platform_Module
Remote desktop application
host application. It offers remote control, file transfer, and VPN functionality. AnyDesk is often used in technical support scams and other remote access
AnyDesk
Internet protocol used for relaying e-mails
submission from authenticated clients), both with or without encryption, and 465 with encryption for submission. Various forms of one-to-one electronic messaging
Simple_Mail_Transfer_Protocol
fully functional. In contrast, the black-box model only provides an oracle access to the analyzed cryptographic primitive (in the form of encryption and/or
White-box_cryptography
Methods used to protect cloud-based assets
Searchable encryption enables secure search on encrypted data. It has symmetric and public-key variants. While it supports functionality over encrypted
Cloud_computing_security
Software development tool for security
certificates – plus corresponding private keys, used for instance in TLS encryption. In IBM WebSphere Application Server and Oracle WebLogic Server, a file
Java_KeyStore
World Wide Web Consortium cryptography standard
operations, such as hashing, signature generation and verification and encryption as well as decryption from within a web application. On 26 January 2017
Web_Cryptography_API
Cloud computing and storage service from Apple
plans include iCloud+ providing additional features. Optional end-to-end encryption has been available since 2022 for all iCloud data, except Calendar, Contacts
ICloud
Type of data transmitted by a web browser
and N to specify the encryption strength in the user agent string. Until 1996, when the United States government allowed encryption with keys longer than
User-Agent_header
UK law to regulate online content
the UK market rather than weaken their encryption. Nevertheless, the provisions pertaining to end-to-end encryption weakening were not removed from the Act
Online_Safety_Act_2023
Network protocol for business-to-business data
document exchange is governed by aspects of WS-Security, including XML Encryption and XML Digital Signatures. Payload agnosticism refers to the document
AS4
System management software
tablets. As of 2011[update], Novell planned to include Full Disk Encryption (FDE) functionality within ZENworks. ZENworks supports multiple server platforms
ZENworks
Telephone eavesdropping device
Some countries do not have encrypted phone data traffic (or very weak encryption), thus rendering an IMSI-catcher unnecessary.[citation needed] A virtual
IMSI-catcher
Type of data structure
2024-03-07. Merkle, R. C. (1988). "A Digital Signature Based on a Conventional Encryption Function". Advances in Cryptology – CRYPTO '87. Lecture Notes in Computer
Merkle_tree
Cloud storage and file synchronization service
and enabled encryption for data in transit between its data centers in November. However, Google Drive did not provide client-side encryption until 2021
Google_Drive
Application for storing and managing passwords
some may lack features like secure syncing across devices or end-to-end encryption. These are standalone applications installed on a user's device. They
Password_manager
Form of computer communication over the internet or locally
group. Privacy can also be enhanced in several ways, such as end-to-end encryption by default. Public and group chat features allow users to communicate
Instant_messaging
Authenticated encryption mode of operation for block ciphers
Offset codebook mode (OCB mode) is an authenticated encryption mode of operation for cryptographic block ciphers. OCB mode was designed by Phillip Rogaway
OCB_mode
System for establishing wireless connection
client, where an RC4 tunnel is created. The AP creates four SSIDs and encryption keys for AES, TKIP, WEP128, and WEP64 generated from a random key script
AOSS
Cloud-based spreadsheet software
highlighted the lack of end-to-end encryption, despite all Google data, including Sheets, using AES-256 encryption. A data study conducted by students
Google_Sheets
Study of the properties of codes and their fitness
Cryptography prior to the modern age was effectively synonymous with encryption, the conversion of information from a readable state to apparent nonsense
Coding_theory
Extension of a private network across a public one
network across a public network, such as the Internet, via the use of encryption and tunneling protocols. In a VPN, a tunneling protocol is used to transfer
Virtual_private_network
Practice in cryptography
additional features such as multi-user functionality in such clients, both provide forward secrecy as well as deniable encryption. In Transport Layer Security (TLS)
Forward_secrecy
Graphical desktop-sharing system
However, use of such encryption plugins makes it incompatible with other VNC programs. RealVNC offers high-strength AES encryption as part of its commercial
VNC
Email client for Windows
the first program start, encryption can be activated and the master password can be set. The AES algorithm is used for encryption in the CBC process (Cipher
The_Bat!
Set of telecommunications standards
to transfer data as well as voice for more natural implementations of encryption and text messaging. P25 radios are commonly implemented by dispatch organizations
Project_25
Secure voice terminal
the same connectors, with similar functional pinouts, as the VINSON for the wideband operational modes. NSA encryption systems FNBDT "NRL and the Advanced
ANDVT
Copy-on-write file system developed by Apple
supports full disk encryption, and file encryption with the following options: no encryption single-key encryption multi-key encryption, where each file
Apple_File_System
American software company
a program that combined PKZIP's data compression with enhanced encryption functionality, was released in 2004. In the following years, PKWARE continued
PKWare
Network protocol for virtual terminals
Shell (SSH) protocol. SSH provides much of the functionality of telnet, with the addition of strong encryption to prevent sensitive data such as passwords
Telnet
Free and open source project building an anonymous network
connections are achieved by encrypting the user's traffic (by using end-to-end encryption), and sending it through a volunteer-run network of roughly 55,000 computers
I2P
International standard
which encryption algorithms may be used for encrypting PINs. The approved algorithms are: Triple Data Encryption Algorithm RSA; Advanced Encryption Standard
ISO_9564
Retired telecommunications software service/application
stating "highly secure with end-to-end encryption". Security services were invisible to the user, and encryption could not be disabled. Skype claimed to
Skype
Cryptographic network protocol
the telnet user. Secure Shell mitigates this risk through the use of encryption mechanisms that are intended to hide the contents of the transmission
Secure_Shell
Password management software
codes (TOTP) Password security auditing and breach monitoring Client-side encryption, using SQLCipher with a user-defined master password Enpass vaults are
Enpass
Content decryption key
created in 2022, regroup CAM formerly managed by Neotion and SmarDTV. Some encryption systems for which CAMs are available are Logiways, Nagravision, Viaccess
Conditional-access_module
FreeBSD software framework
chain of geom layers. For example, on top of the geom_mirror module an encryption module can be added, such as geom_eli to provide a mirrored and encrypted
GEOM
Software framework of Linux kernel
of the logical volume manager (LVM), software RAIDs and dm-crypt disk encryption, and offers additional features such as file system snapshots. Device
Device_mapper
Reference model for network communication
specifically (authenticated) encryption, at this layer can be applied with MACsec. The network layer provides the functional and procedural means of transferring
OSI_model
Activist advocating widespread use of strong cryptography
decentralized money. The movement has also contributed to the mainstreaming of encryption in everyday technologies, such as secure messaging apps and privacy-focused
Cypherpunk
Management of cryptographic keys
generate the encryption keys can use them to access sensitive, regulated data. If a certificate authority is compromised or an encryption algorithm is
Key_management
Chinese web browser developed by UCWeb Inc
without encryption. They also managed to bypass the encryption of UC Browser, leading them to accuse UCWeb of using non-effective encryption systems to
UC_Browser
Components of Microsoft Windows
The setting "High encryption (Non-export)" uses 128-bit RC4 encryption and "High encryption (Export)" uses 40-bit RC4 encryption. When setting the Security
Remote_Desktop_Services
Study of analyzing information systems in order to discover their hidden aspects
secret key. Global deduction – the attacker discovers a functionally equivalent algorithm for encryption and decryption, but without learning the key. Instance
Cryptanalysis
Security software
kept functional. Keybase allows users to prove a link between certain online identities (such as a Twitter or Reddit account) and their encryption keys
Keybase
Internet protocol that uses a proxy server
SOCKS4/5 and http upstream proxies. Lack of request and packets exchange encryption makes SOCKS practically vulnerable to man-in-the-middle attacks and IP
SOCKS
Short-range wireless technology standard
using a single encryption key longer than this time allows simple XOR attacks to retrieve the encryption key. Turning off encryption is required for
Bluetooth
Software for communication within servers
benefits, especially on the memory key-protected mainframe, even without encryption, because there is no opportunity to intercept a network connection. Moreover
HiperSocket
American social media and messaging app
Only". It has also reportedly incorporated limited use of end-to-end encryption, with intention to expand its use in the future. Snapchat was created
Snapchat
Standard identification for Active Duty United States Defense personnel
The CAC also satisfies the requirements for digital signature and data encryption technologies: authentication, integrity and non-repudiation. The CAC is
Common_Access_Card
2020 operating system version
macOS Big Sur supports encryption at the file level. Earlier versions of macOS (10.15 Catalina and older) supported encryption only at the level of entire
MacOS_Big_Sur
standard for purchasing SFI Coding and Classification System provides a functional subdivision of technical and financial ship or rig information Shipdex
Maritime_data_standards
them. Cryptography: Performing various cryptographic operations such as encryption, decryption, and digital signing to ensure data confidentiality and integrity
Secure_access_module
European standard for trunked radio systems
versa. For protection against eavesdropping, air interface encryption and end-to-end encryption is available. The common mode of operation is in a group
TETRA
System that can issue, distribute and verify digital certificates
identities, which are used for: Encryption and/or sender authentication of e-mail messages (e.g., using OpenPGP or S/MIME); Encryption and/or authentication of
Public_key_infrastructure
information from unwanted access. Information rights management solutions use encryption to prevent unauthorized access. A key or password can be used to control
Information_rights_management
Data encryption and verification system
pretty Easy privacy (p≡p or pEp) was a pluggable data encryption and verification system that provided automatic cryptographic key management through a
Pretty_Easy_privacy
Type of two-dimensional barcode
contact between service staff and customers. By specifying the SSID, encryption type, password/passphrase, and whether the SSID is hidden or not, mobile
QR_code
crypt was a file encryption tool that used an algorithm very close to the World War II Enigma cipher. Mcrypt provides the same functionality but uses several
Mcrypt
Overview of computer engineering topics
Software walkthrough Code review Software inspection Software verification Functional testing Software testing White-box testing Black-box testing Gray box
Computer engineering compendium
Computer_engineering_compendium
Free online crowdsourced encyclopedia
China since May 2015. This was done after Wikipedia started to use HTTPS encryption, which made selective censorship more difficult. In 2017–18, after a barrage
Wikipedia
Class of fingerprinting algorithm
perceptual hash for speech encryption which proved to be effective. They were able to create a system in which the encryption was more accurate and more
Perceptual_hashing
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
Biblical
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Boy/Male
English
The fictional character Jorel father of Superman.
Boy/Male
American, Australian, British, Danish, English, Finnish, French, German, Scandinavian
Farmer; The Fictional Character Jorel Father of Superman; Earth Worker
Male
Egyptian
, a high Egyptian functionary.
Boy/Male
English
Modern. The fictional character Jorel father of Superman.
Boy/Male
American, Australian, British, English, French
Mighty Spearman; The Fictional Character Jorel Father of Superman
Male
Egyptian
, Functionary of the Interior.
Boy/Male
American, British, English
Mighty Spearman; One who Saves; The Fictional Character Jorel Father of Superman
Male
Egyptian
, the son of the functionary Heknofre.
Male
Egyptian
, an Egyptian functionary.
Boy/Male
Buddhist, Indian, Japanese
Mysterious Function
Surname or Lastname
English
English : nickname from the animal, Middle English catte ‘cat’. The word is found in similar forms in most European languages from very early times (e.g. Gaelic cath, Slavic kotu). Domestic cats were unknown in Europe in classical times, when weasels fulfilled many of their functions, for example in hunting rodents. They seem to have come from Egypt, where they were regarded as sacred animals.English : from a medieval female personal name, a short form of Catherine.Variant spelling of German and Dutch Katt.
Male
Egyptian
, a great functionary.
Male
Egyptian
, an Egyptian functionary.
Boy/Male
English
The fictional character Jorel father of Superman.
Male
Celtic
, great justiciary, or functionary.
Boy/Male
American, British, English
Mighty Spearman; The Fictional Character Jorel Father of Superman
Boy/Male
English
The fictional character Jorel father of Superman.
Boy/Male
French
Fictional swordsman: (ambitious and filled with religious aspirations) from Alexander Dumas's...
Boy/Male
Australian, French
Fictional Swordsman; Ambitious and Filled with Religious Aspirations; From Alexander Dumas's Three Musketeers
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : habitational name (Old French d’Eu) for someone from Eu in Seine-Maritime, France (see Doe 2).Welsh : nickname for a fat person, from Welsh tew ‘fat’.
Boy/Male
Tamil
Girl/Female
Australian, Biblical
Forbidding
Girl/Female
American, British, English, Gaelic, Irish
A Combination of Initials K and C; Alert; Vigorous; Watchful
Male
Japanese
(é‡å¤«) Japanese name SHIGEO means "luxuriant man."
Girl/Female
British, English
From Wales
Boy/Male
Hindu
Boy/Male
Tamil
Girl/Female
Muslim
Fragrant
Boy/Male
Indian, Tamil
Lord Vishnu
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
FUNCTIONAL ENCRYPTION
n.
The appropriate action of any special organ or part of an animal or vegetable organism; as, the function of the heart or the limbs; the function of leaves, sap, roots, etc.; life is the sum of the functions of the various organs and parts of the body.
pl.
of Functionary
adv.
In a functional manner; as regards normal or appropriate activity.
a.
Relatively small; inconsiderable; insignificant; as, a fractional part of the population.
v. i.
To execute or perform a function; to transact one's regular or appointed business.
n.
A derived function; a function obtained from a given function by a certain algebraic process.
n.
A quantity so connected with another quantity, that if any alteration be made in the latter there will be a consequent alteration in the former. Each quantity is said to be a function of the other. Thus, the circumference of a circle is a function of the diameter. If x be a symbol to which different numerical values can be assigned, such expressions as x2, 3x, Log. x, and Sin. x, are all functions of x.
a.
Pertaining to, or connected with, a function or duty; official.
n.
One charged with the performance of a function or office; as, a public functionary; secular functionaries.
a.
Relating to friction; moved by friction; produced by friction; as, frictional electricity.
v. t.
To supply with an organ or organs having a special function or functions.
a.
Pertaining to, or characterized by, fiction; fictitious; romantic.
a.
Fractional.
n.
Paper fractional currency.
a.
Capable of, or pertaining to, flection or inflection.
n.
The office, duties, or functions of a minister, servant, or agent; ecclesiastical, executive, or ambassadorial function or profession.
n.
An angle upon which the value of some function depends; -- a term used more especially in connection with elliptic functions.
v. i.
Alt. of Functionate
a.
Of or pertaining to fractions or a fraction; constituting a fraction; as, fractional numbers.
a.
Pertaining to the function of an organ or part, or to the functions in general.