Error detection and correction

File Format
Name	Error detection and correction
Ontology	Electronic File Formats Error detection and correction

Error detection only

• Adler-32
• Checksum
• CRC (Cyclic Redundancy Check)
  • CRC-16
  • CRC-32
    • Brik
    • Simple File Verification (.sfv)
• MurmurHash
• Parity bit
• xxHash

For cryptographic hash functions, see Encryption.

Error detection and correction

• ARJ-PROTECT data
• Hamming code
• RAR recovery record and .rev recovery volumes
• Reed-Solomon error correction
  • BlockHashLoc (.bhl)
  • Blockyarchive/blkar (.ecsbx)
  • DVDisaster Error Correction File (.ecc)
  • ICE ECC (.ecc)
  • Mono (.mono)
  • Parity Volume Set / Parchive (.par, .par2, .par3, pa3, .p??)
  • Recovery Star
  • RockFAT
  • rsbep (.shielded, .frozen.RS)
  • RSC32 (.RSC32, .RSE32)
  • rscode-correction (.rsecc)
  • SeqBox (.sbx)

Type-in Program Validation

• AccuType - Nibble
• Apple Checker - Nibble
• BASIC Editor - ANALOG Computing
• Bug-Out - Home Computer Magazine
• Bug Repellent - Ahoy!
• C:Check/D:Check/ST-Check - ANALOG Computing
• CHECK/CHECK2/CHECK3 - 8000 Plus / PCW Plus
• Checkbin/Checksoft - Core and Hardcore Computist
• CheckIt - Nibble
• Checksummer - 64'er and Happy Computer
• Checksummer (Frank Brall) - Computronic and Compute Mit
• Chexsum - Melbourne House Publishers
• Commodore Dossier Checksum - Commodore Dossier
• Dataspeeder - Commodore Dossier
• Edytor BASICa - Moje Atari and Bajtek
• F64Summer - Forum64
• Flankspeed - Ahoy!
• Generator kodów kontrolnych - Tajemnice Atari
• Get It Right! - Atari User, The Micro User
• Hex Data Entry - Your Commodore
• Key Perfect - Nibble
• KEYO - Monitor (UKACOC)
• Korrector/Kontrolsum - Run (German, Danish and Hungarian editions)
• M/L Editor - ANALOG Computing
• Magazine Entry Program - Commodore Magazine
• MIKBUG Tape Format - Byte
• MLX - COMPUTE! and COMPUTE!'s Gazette
• MSE - 64'er
• Perfect Typist - Run
• Program Checker - ROM Magazine
• Program Perfect - Computer Shopper
• PROOF-IT - Commodore 64 Fun and Games Volume 2
• RUN's Checksum - Run
• Squares Input Program - Computronic
• Stop Bug - Papersoft
• SWAT (Strategic Weapon Against Typos) - SoftSide
• Syntax Checker - Your Commodore
• Tarkastaja (Inspector) - MikroBITTI
• The Automatic Proofreader - COMPUTE! and COMPUTE!'s Gazette
• TYPO (Type Your Program Once) - Antic, Page 6, New Atari User
• Unicheck - ANALOG Computing
• Verifizer - Transactor

General Info about Type-In Program Checkers

• Wikipedia
• Learn About Checksum Programs for Checking Type-In Programs
• First encounter: COMPUTE! magazine and its glorious, tedious type-in code

Lost/Apocryphal Type-in Program Checkers

• Code Checker - PC Hands On (probably related to one of the programs used by Nibble Magazine)
• Spectravideo, MSX, C64 and VIC versions of Tarkastaja (Inspector)

See also

• Error codes and messages

Links

• Fixity and Filesystems: Enhanced System Monitoring via inodes