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Key size for symmetric encryption
computing, 56-bit encryption refers to a key size of fifty-six bits, or seven bytes, for symmetric encryption. While stronger than 40-bit encryption, this
56-bit_encryption
Key size for symmetric encryption
break a 56-bit Data Encryption Standard (DES) key in days, and would be able to break 40-bit DES encryption in about two seconds. 40-bit encryption was common
40-bit_encryption
Early unclassified symmetric-key block cipher
Encryption Standard (DES /ˌdiːˌiːˈɛs, dɛz/) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits
Data_Encryption_Standard
Transfer from the United States to another country of technology related to cryptography
export of 56-bit encryption if the exporter promised to add "key recovery" backdoors by the end of 1998. In 1999, the EAR was changed to allow 56-bit encryption
Export of cryptography from the United States
Export_of_cryptography_from_the_United_States
Number of bits in a key used by a cryptographic algorithm
base for what would become the Data Encryption Standard. Lucifer's key length was reduced from 128 bits to 56 bits, which the NSA and NIST argued was sufficient
Key_size
Process of converting plaintext to ciphertext
computer encryption is constantly evolving to prevent eavesdropping attacks. One of the first "modern" cipher suites, DES, used a 56-bit key with 72
Encryption
Block cipher
DES cipher algorithm three times to each data block. The 56-bit key of the Data Encryption Standard (DES) is no longer considered adequate in the face
Triple_DES
Standard for the encryption of electronic data
of 128 bits, but three different key lengths: 128, 192 and 256 bits. AES has been adopted by the US government. It supersedes the Data Encryption Standard
Advanced_Encryption_Standard
Controversy regarding copyright
to websites publishing a 128-bit (16-byte) number, represented in hexadecimal as 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 (commonly referred to
AACS encryption key controversy
AACS_encryption_key_controversy
private network (VPN) connections. 128-bit key (strong), 56-bit key, and 40-bit key (standard) MPPE encryption schemes are supported. MPPE provides data
Microsoft Point-to-Point Encryption
Microsoft_Point-to-Point_Encryption
Suite of Microsoft security protocols
three 7-byte (56-bit) quantities. Each of these 56-bit quantities is used as a key to DES encrypt the 64-bit challenge. The three encryptions of the challenge
NTLM
Distributed computing organization
Lab's 56-bit RC5 Encryption Challenge — Completed 19 October 1997 (after 250 days and 47% of the key space tested). RSA Lab's 56-bit DES-II-1 Encryption Challenge
Distributed.net
Microsoft network operating system
On the negative side, the same DES algorithm was used with only 56-bit encryption for the subsequent authentication steps, and there is still no salting
LAN_Manager
Cryptography secured against quantum computers
"NIST Releases First 3 Finalized Post-Quantum Encryption Standards". NIST. 13 August 2024. "BIKE – Bit Flipping Key Encapsulation". bikesuite.org. Retrieved
Post-quantum_cryptography
Family of archive file formats
DES, RC2, RC4 supported for encryption (not published online until the publication of APPNOTE 5.2) 5.2: (2003) AES encryption support for SES (defined in
ZIP_(file_format)
Malicious software used in ransom demands
sophisticated RSA encryption schemes, with ever-increasing key-sizes. Gpcode.AG, which was detected in June 2006, was encrypted with a 660-bit RSA public key
Ransomware
Attempts to limit access to strong cryptography
48 bits, while the West Germans wanted stronger encryption to protect against East German spying, so the compromise became a key length of 56 bits. In
Crypto_Wars
($87,000). The US government allows the export of 56-bit encryption software, and stronger encryption software for highly sensitive data. The Electronic
Timeline of Internet conflicts
Timeline_of_Internet_conflicts
Tables for the Data Encryption Standard
referenced in the Data Encryption Standard (DES) block cipher. All bits and bytes are arranged in big endian order in this document. That is, bit number 1 is always
DES_supplementary_material
Password-based key derivation function
Schneier, Bruce (December 1993). "Fast Software Encryption, Description of a New Variable-Length Key, 64-Bit Block Cipher (Blowfish)". Cambridge Security
Bcrypt
what might be called classical cryptography — that is, of methods of encryption that use pen and paper, or perhaps simple mechanical aids. In the early
History_of_cryptography
Cryptanalytic method for unauthorized users to access data
export regulations historically restricted key lengths to 56-bit symmetric keys (e.g. Data Encryption Standard), these restrictions are no longer in place
Brute-force_attack
Term applied to cryptographic systems that are highly resistant to cryptanalysis
1999[update] any implementation of the symmetric encryption algorithm with the key length above 56 bits or its public key equivalent to be strong and thus
Strong_cryptography
Process of developing the AES standard
The Advanced Encryption Standard (AES), the symmetric block cipher ratified as a standard by National Institute of Standards and Technology of the United
Advanced Encryption Standard process
Advanced_Encryption_Standard_process
Type of cipher
one for encryption, E, and the other for decryption, D. Both algorithms accept two inputs: an input block of size n bits and a key of size k bits; and both
Block_cipher
Method of exchanging cryptographic keys
replay-attacks. ephemeral, static: For example, used in ElGamal encryption or Integrated Encryption Scheme (IES). If used in key agreement it could provide implicit
Diffie–Hellman_key_exchange
Practice and study of secure communication techniques
stipulated that the use of cryptography with short key-lengths (56-bit for symmetric encryption, 512-bit for RSA) would no longer be export-controlled. Cryptography
Cryptography
Computer architecture bit width
disk-to-memory methods. Some 64-bit programs, such as encoders, decoders and encryption software, can benefit greatly from 64-bit registers,[citation needed]
64-bit_computing
Cryptographic hash function
Algorithm 1) is a hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest – typically rendered as 40
SHA-1
Encrypted voice communication
the encryption of voice communication over a range of communication types such as radio, telephone or IP. The implementation of voice encryption dates
Secure_voice
Security protocol for wireless computer networks
Privacy) is an early encryption protocol for wireless networks, designed to secure WLAN connections. It supports 64-bit and 128-bit keys, combining user-configurable
Wi-Fi_Protected_Access
Simple encryption method
a catchphrase to refer to any conspicuously weak encryption scheme; a critic might claim that "56-bit DES is little better than ROT13 these days". In a
ROT13
Brand of smart and proximity cards
Type-A 13.56 MHz contactless smart card standard. It uses AES and DES/Triple-DES encryption standards, as well as an older proprietary encryption algorithm
MIFARE
Creating sequence of numbers that cannot be predicted
made predictable, it can be used as backdoor by an attacker to break the encryption. The NSA is reported to have inserted a backdoor into the NIST certified
Random_number_generation
Radio standard
encryption or Tytera's Basic Encrypt encryption. The DMRA now manages an interoperable voice and data encryption scheme for DMR. 40 Bit ARC4, 64 bit DES
Digital_mobile_radio
Block cipher
The Advanced Encryption Standard (AES) candidate RC6 was based on RC5. Unlike many schemes, RC5 has a variable block size (32, 64 or 128 bits), key size
RC5
Cryptographic algorithm
IBM in 1992 to reduce the security strength of the 56-bit DES cipher to that of 40-bit encryption, at the time a requirement of U.S. restrictions on export
CDMF
Digital rights management system used for DVD Video discs
Advanced Encryption Standard (AES) in the Advanced Access Content System (AACS) DRM scheme used by HD DVD and Blu-ray Disc, which have 56-bit and 128-bit key
Content_Scramble_System
Earliest civilian block ciphers
Encryption Standard (compare the more recent AES process). It became the DES after the National Security Agency reduced the cipher's key size to 56 bits
Lucifer_(cipher)
Internet security protocol
SMTP and RFC 7673 for using DANE with Service (SRV) records. TLS/SSL encryption is currently based on certificates issued by certificate authorities (CAs)
DNS-based Authentication of Named Entities
DNS-based_Authentication_of_Named_Entities
Encoding for a sequence of byte values using 64 printable characters
binary-to-text encoding that uses 64 printable characters to represent each 6-bit segment of a sequence of byte values. As for all binary-to-text encodings
Base64
Cryptographic hash extension
(3 × 56 = 168-bit key), and some as 2TDEA (2 × 56 = 112 bit key), comparing the encryption results will lower the attack complexity to just 56 bits; similar
Extendable-output_function
Family of instruction set architectures
microprocessor and its 8-bit-external-bus variant, the 8088. The 8086 was introduced in 1978 as a fully 16-bit extension of Intel's 8-bit 8080 microprocessor
X86
Radio standard
Encryption: 64-bit block encryption cipher operating in OFB mode using a 56-bit key expressed in 64 bits with parity bits. This level of encryption helps
NXDN
Netscape, is a defunct mechanism that was used to step up from 40-bit or 56-bit to 128-bit cipher suites with SSL. It was created in response to United States
Server-Gated_Cryptography
Software suite
Key Integrity Protocol (TKIP) encryption protocol. It improved security by implementing the following features: A 56-bit cryptographic message integrity
Aircrack-ng
Generic space–time tradeoff cryptographic attack
Double DES encrypts the data with two different 56-bit keys, Double DES can be broken with 257 encryption and decryption operations. The multidimensional
Meet-in-the-middle_attack
Message-digest hashing algorithm
bytes ≡ 56 (mod 64). append original length in bits mod 264 to message // Process the message in successive 512-bit chunks: for each 512-bit chunk of
MD5
Set of telecommunications standards
use of Data Encryption Standard (DES) encryption (56 bit), 2-key Triple-DES encryption, three-key Triple-DES encryption, Advanced Encryption Standard (AES)
Project_25
Stream cipher
is possible to recover the full 1216-bit state of the cipher and the original 128-bit secret key using just 56 words of known stream and in 214 steps
MUGI
Laws relating to encryption
stipulated that the use of cryptography with short key-lengths (56-bit for symmetric encryption, 512-bit for RSA) would no longer be export-controlled. Cryptography
Cryptography_law
Set of cryptographic hash functions
bits: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256. SHA-256 and SHA-512 are hash functions whose digests are eight 32-bit and 64-bit words
SHA-2
Device that modulates an analog carrier signal to encode digital information
terminology is used for them. 56 kbit/s line Codec Command and Data modes (modem) Fax demodulator Handshaking List of interface bit rates List of ITU-T V-series
Modem
Block cipher
XORing an extra 64 bits of key (K1) to the plaintext before applying DES, and then XORing another 64 bits of key (K2) after the encryption: DES-X ( M ) =
DES-X
Cryptographic hash function
Crypto 1991: 194–203 Hans Dobbertin: Cryptanalysis of MD4. Fast Software Encryption 1996: 53–69 Hans Dobbertin, 1998. Cryptanalysis of MD4. J. Cryptology
MD4
Block cipher
Кузнечик) is a symmetric block cipher. It has a block size of 128 bits and key length of 256 bits. It is defined in the National Standard of the Russian Federation
Kuznyechik
File compression software
released on June 19, 2012. 128- and 256-bit key AES encryption in addition to the less secure PKZIP 2.0 encryption method used in earlier versions. The AES
WinZip
with another NWID, but the controller would discard the traffic. DES encryption (56-bit) was an option in some of the ISA and MCA cards and all of the WavePoint
WaveLAN
General form of cryptanalysis applicable primarily to block ciphers
ciphers and hash functions, including a theoretical weakness in the Data Encryption Standard (DES). It was noted by Biham and Shamir that DES was surprisingly
Differential_cryptanalysis
Digital copy protection
of keys and KSVs gives both devices the same 56-bit number, which is later used to encrypt data. Encryption is done by a stream cipher. Each decoded pixel
High-bandwidth Digital Content Protection
High-bandwidth_Digital_Content_Protection
Family of block ciphers
faster than AES. When implemented on 8-bit AVR microcontroller, Speck encryption with 64-bit blocks and 128-bit key consumes 192 bytes of flash memory
Speck_(cipher)
Cryptography based on quantum mechanical phenomena
as the practice of encoding messages, a concept since referred to as encryption, quantum cryptography plays a crucial role in the secure processing, storage
Quantum_cryptography
Activist advocating widespread use of strong cryptography
suggested 75 bits was the minimum key size to allow an existing cipher to be considered secure and kept in service. At the time, the Data Encryption Standard
Cypherpunk
Substitution box used in the Rijndael cipher
on which the Advanced Encryption Standard (AES) cryptographic algorithm is based. The S-box maps an 8-bit input, c, to an 8-bit output, s = S(c). Both
Rijndael_S-box
Algorithm that calculates all the round keys from the key
splits the 128-bit key into four 32-bit pieces and uses them repeatedly in successive rounds. DES has a key schedule in which the 56-bit key is divided
Key_schedule
Number representing illegal information
possess only by certain authorized persons. An AACS encryption key (09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0) that came to prominence in May 2007 is
Illegal_number
Key derivation function of password hash
the same key, and so on for a total of 25 DES encryptions. A 12-bit salt is used to perturb the encryption algorithm, so standard DES implementations can't
Crypt_(C)
Resistance of a password to being guessed
requirements of choosing keys used in encryption. In 1999, an Electronic Frontier Foundation project broke 56-bit DES encryption in less than a day using specially
Password_strength
Attack model in cryptanalysis
the attacker has no channel providing access to the plaintext prior to encryption, in all practical ciphertext-only attacks, the attacker still has some
Ciphertext-only_attack
Block cipher
1-byte subkeys, which are derived by splitting 56 bits of the key into bytes. The key is then rotated 56 bits for use in the next two rounds. Only a small
NewDES
Number generated by a random process
asynchronously." These numbers, however, were only 32 bit, at a time when export controls were on 56 bits and higher, so they were not state of the art. In
Random_number
8-bit microprocessor
National Bureau of Standards encryption algorithm. This DEU operates using a 56-bit user-specified key to generate 64-bit cipher words. It was available
Intel_8085
Sequence of words used to gain access
cryptographic programs and systems, especially those that derive an encryption key from a passphrase. The origin of the term is by analogy with password
Passphrase
Problem-solving technique and algorithmic paradigm
of any weakness in an encryption system that would otherwise make his or her task easier. The key length used in the encryption determines the practical
Brute-force_search
Cryptography contest
by RSA Security to highlight the lack of security provided by the Data Encryption Standard. The first challenge began in 1997 and was solved in 96 days
DES_Challenges
Digital display interface
Philips, which uses 128-bit AES encryption. It also features full authentication and session key establishment. Each encryption session is independent
DisplayPort
Encryption algorithm used by DVB television standard
block cipher and a stream cipher. When used in encryption mode the data are first encrypted using the 64-bit block cipher in CBC mode, starting from packet
Common_Scrambling_Algorithm
Block cipher
a block size of 128 bits, using DES as the round function. It has no actual key schedule, so the total key size is 4×56=224 bits. In 1997, Eli Biham found
Ladder-DES
Key that is easy to break with a specific cipher
encryption mode of DES to act identically to the decryption mode of DES (albeit potentially that of a different key). In operation, the secret 56-bit
Weak_key
was the first group to publicly break a message which used the Data Encryption Standard (DES), becoming the $10,000 winner of the first of the set of
DESCHALL_Project
Security of a cryptosystem which derives purely from information theory
provable, unbreakable, and quantifiable (in bits/second/hertz). Wyner's initial physical layer encryption work in the 1970s posed the Alice–Bob–Eve problem
Information-theoretic security
Information-theoretic_security
Technical standard
county, affected by the emergency. Encryption standards, such as AES (FIPS 197), and its predecessor, the withdrawn 56-bit DES (FIPS 46-3). Some FIPS standards
Federal Information Processing Standards
Federal_Information_Processing_Standards
Error-detecting code for detecting data changes
knowledge of the encryption key; this was one of the well-known design flaws of the Wired Equivalent Privacy (WEP) protocol. To compute an n-bit binary CRC
Cyclic_redundancy_check
Decoding of pay TV or pay radio signals
transactions require 128-bit encryption, 56-bit codes are not uncommon in video encryption. A cryptographic attack against a 56-bit DES code would still be
Pirate_decryption
Cryptographic hardware
Foundation (EFF) in 1998, to perform a brute force search of the Data Encryption Standard (DES) cipher's key space – that is, to decrypt an encrypted message
EFF_DES_cracker
Cryptographic hash function
substantially modified Advanced Encryption Standard (AES). Whirlpool takes a message of any length less than 2256 bits and returns a 512-bit message digest. The authors
Whirlpool_(hash_function)
Type of two-dimensional barcode
hexadecimal): [41 17 77 77 72 E7 76 96 B6 97 06 56 46 96 12 E6 F7 26 70 AE AD EF 06 97 8F 25] Note: The bit values shown in the Ver1 QR symbol below do not
QR_code
Database software
compression of network communications, automatic log file rotation, blob encryption, etc. In 2024, Actian decided to withdraw the Actian X brand, making all
Ingres_(database)
World Wide Web content existing on darknets
stay anonymous and cannot be tracked due to the layered encryption system. The darknet encryption technology routes users' data through a large number of
Dark_web
Telecontrol standard
with 56 bit timestamps. Double indication without / with 24 / with 56 bit timestamps. Step position information without / with 24 / with 56 bit timestamps
IEC_60870-5
Type of proprietary network protocol
utilizing H.264/AVC. 32-bit color support. 8-, 15-, 16-, and 24-bit color are also supported. Encryption: option of legacy 56-bit or 128-bit RC4 and modern MITM-resistant
Remote_Desktop_Protocol
ARM Cortex-M based Microcontrollers by STMicroelectronics
STM32 is a family of 32-bit microcontroller and microprocessor integrated circuits by STMicroelectronics. STM32 microcontrollers are grouped into related
STM32
Technique to increase the security of an iterated block cipher
after the last round of encryption. The first block cipher to use a form of key whitening is DES-X, which simply uses two extra 64-bit keys for whitening,
Key_whitening
Magnetic tape data storage technology
the encryption process. All current LTO manufacturers support encryption natively enabled in the tape drives using Application Managed Encryption (AME)
Linear_Tape-Open
Facts provided or learned about something or someone
computation, formulation or composition), processing (including encoding, encryption, compression, packaging), transmission (including all telecommunication
Information
Maximum rate of data transfer
goodput). For example, a channel with x bit/s may not necessarily transmit data at x rate, since protocols, encryption, and other factors can add appreciable
Bandwidth_(computing)
Principal protocol used to stream data across an IP network
tcpcrypt is an extension proposed in July 2010 to provide transport-level encryption directly in TCP itself. It is designed to work transparently and not require
Transmission_Control_Protocol
English cryptanalyst (1917–1996)
"grade: linguist, languages: none". -BBC News "Naturally, that worried me a bit, because I did know that was something which was almost certainly permanent
Joan_Clarke
Computer data measurements and scales
strictly standards-conformant units of information and multiples of the bit and byte with decimal scaling, or using historically common usages of a few
Orders_of_magnitude_(data)
Set of device communication protocols
certifying device compliance. Secure communications are available by applying encryption algorithms, as is done for credit cards, and if they fit the criteria
Near-field_communication
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
Boy/Male
Hindu
Friend
Surname or Lastname
English
English : variant spelling of Burt.German : habitational name for someone from any of several places in the Rhineland named Birth or Birten.
Girl/Female
Muslim
Unique
Boy/Male
British, Dutch, English, Greek
From the Pit
Boy/Male
Hindu
Courageous, Warrior
Male
Russian
(Тит) Russian form of Roman Latin Titus, TIT means "fire; to burn" or "straining."
Boy/Male
English
Man from Britain.
Female
Hebrew
(בַּת-×ֵל) Hebrew name BAT-EL means "daughter of God."
Boy/Male
American, British, Dutch, English, Greek, Latin, Swedish
Follower of Christ; Nickname for Christopher; Frontiersman Kit Carson; Anointed; Christian
Male
English
Pet form of English Christopher, KIT means "Christ-bearer." Compare with another form of Kit.
Girl/Female
Indian
Unique
Female
Hungarian
Hungarian form of Greek Elisabet, ERZSÉBET means "God is my oath."
Female
English
Pet form of English Katherine, KIT means "pure." Compare with masculine Kit.
Surname or Lastname
English
English : see Bigg.
Male
Polish
Polish form of Roman Latin Vitus, WIT means "life."
Female
English
Short form of English Elizabeth, BET means "God is my oath."Â
Female
Hebrew
(בַּת-ש×ֶבַע) Variant spelling of Hebrew Bath-Sheba, BAT-SHEVA means "daughter of the oath."
Boy/Male
Dutch Latin Polish
White.
Male
Scottish
Pet form of medieval Scottish Kester, KIT means "Christ-bearer." Compare with another form of Kit.
Boy/Male
Hindu
Song
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
Girl/Female
Australian
Free
Boy/Male
Indian, Punjabi, Sikh
Light of God
Girl/Female
Indian, Punjabi, Sikh
Supremely Wonderful
Girl/Female
Arabic, Hebrew, Hindu, Indian, Marathi, Muslim
Pray
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
A Reputed Sage
Boy/Male
British, English
Lives Near the Ash Tree Brook
Girl/Female
Tamil
Jaganmata | ஜகநமாதா
Mother of the world, Goddess Lakshmi, Goddess Durga
Girl/Female
Indian, Sanskrit
The First Day of the New Moon
Boy/Male
Tamil
Vrajamohan | வரஜமோஹந
Lord Krishna
Boy/Male
British, English
Spring
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
56 BIT-ENCRYPTION
v. t.
To seize with the teeth, so that they enter or nip the thing seized; to lacerate, crush, or wound with the teeth; as, to bite an apple; to bite a crust; the dog bit a man.
v.
A part of anything, such as may be bitten off or taken into the mouth; a morsel; a bite. Hence: A small piece of anything; a little; a mite.
superl.
Having greatness, fullness, importance, inflation, distention, etc., whether in a good or a bad sense; as, a big heart; a big voice; big looks; to look big. As applied to looks, it indicates haughtiness or pride.
v.
Somewhat; something, but not very great.
imp. & p. p.
of Bet
imp.
of Bite
v. t.
To put round the bitts; as, to bitt the cable, in order to fasten it or to slacken it gradually, which is called veering away.
v. t.
To put a bridle upon; to put the bit in the mouth of.
imp. & p. p.
of Hit
adv. & conj.
Excepting or excluding the fact that; save that; were it not that; unless; -- elliptical, for but that.
inf.
of Wit
n.
A morsel; a bit.
v. t.
To strike or hit with a bat or a pole; to cudgel; to beat.
v. t.
To put into a bin; as, to bin wine.