Checksum (/m/023z3)

A checksum or hash sum is a small-size datum from a block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage. It is usually applied to an installation file after it is received from the download server. By themselves checksums are often used to verify data integrity, but should not be relied upon to also verify data authenticity. The actual procedure which yields the checksum, given a data input is called a checksum function or checksum algorithm. Depending on its design goals, a good checksum algorithm will usually output a significantly different value, even for small changes made to the input. This is especially true of cryptographic hash functions, which may be used to detect many data corruption errors and verify overall data integrity; if the computed checksum for the current data input matches the stored value of a previously computed checksum, there is a very high probability the data has not been accidentally altered or corrupted. Checksum functions are related to hash functions, fingerprints, randomization functions, and cryptographic hash functions.
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Topic
Keys
  • /user/avh/ellerdale/0080-280d
  • /wikipedia/ar/Checksum
  • /wikipedia/ar/تدقيق_مجموع
  • /wikipedia/bg/Контролна_сума
  • /wikipedia/ca/Checksum
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  • /wikipedia/cs/Kontrolní_součet
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  • /wikipedia/da/Checksumsfunktion
  • /wikipedia/da/Hash-sum
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  • /wikipedia/de/Checksum
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  • /wikipedia/de/Kontrollsumme
  • /wikipedia/de/Prüfnummer
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  • /wikipedia/de/Prüfsummenverfahren
  • /wikipedia/en/Check_sum
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  • /wikipedia/en/Checksums
  • /wikipedia/en/Checksun
  • /wikipedia/en/Header_checksum
  • /wikipedia/en/ICV_-_Integrity_Check_Value
  • /wikipedia/en/Integrity_check_value
  • /wikipedia/es/Checksum
  • /wikipedia/es/Suma_de_comprobacion
  • /wikipedia/es/Suma_de_verificación
  • /wikipedia/es/Sumas_de_comprobación
  • /wikipedia/es/Sumas_de_verificación
  • /wikipedia/et/Kontrollsumma
  • /wikipedia/fa/چك_سام
  • /wikipedia/fa/چكسام
  • /wikipedia/fa/چک_سام
  • /wikipedia/fa/چک‌سام
  • /wikipedia/fa/مجموع_مقابله_اي
  • /wikipedia/fa/مجموع_مقابله_ای
  • /wikipedia/fa/مجموع_مقابله‌ای
  • /wikipedia/fi/Tarkistussumma
  • /wikipedia/fr/Checksum
  • /wikipedia/fr/Somme_de_contrôle
  • /wikipedia/he/Checksum
  • /wikipedia/he/סיכום_ביקורת
  • /wikipedia/he/סכום_ביקורת
  • /wikipedia/hu/Ellenőrző_összeg
  • /wikipedia/hu/Ellenőrzőösszeg
  • /wikipedia/it/Algoritmo_checksum
  • /wikipedia/it/Checksum
  • /wikipedia/it/Controllo_di_integrità
  • /wikipedia/it/Somma_di_controllo
  • /wikipedia/ja/チェックサム
  • /wikipedia/ko/체크섬
  • /wikipedia/ko/체크썸
  • /wikipedia/lv/Kontrolsumma
  • /wikipedia/nl/Check_digit
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  • /wikipedia/nl/Controlecijfer
  • /wikipedia/nl/Controlegetal
  • /wikipedia/no/Sjekksum
  • /wikipedia/pl/Cyfra_kontrolna
  • /wikipedia/pl/Suma_kontrolna
  • /wikipedia/pl/Sumy_kontrolne
  • /wikipedia/pt/Checksum
  • /wikipedia/pt/Soma_de_verificação
  • /wikipedia/ru/Контрольная_сумма
  • /wikipedia/sk/Kontrolná_suma
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  • /wikipedia/sv/Checksum
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  • /wikipedia/sv/Checksummor
  • /wikipedia/sv/Cheksumma
  • /wikipedia/sv/Kontrollsiffra
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  • /wikipedia/sv/Kontrollsummor
  • /wikipedia/th/Checksum
  • /wikipedia/th/ผลรวมตรวจสอบ
  • /wikipedia/th/เช็กซัม
  • /wikipedia/th/เช็คซัม
  • /wikipedia/uk/Контрольна_сума
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  • /wikipedia/zh-cn/Checksum
  • /wikipedia/zh-cn/校驗值
  • /wikipedia/zh-cn/校驗和
  • /wikipedia/zh-cn/校验值
  • /wikipedia/zh-cn/校验和
  • /wikipedia/zh-tw/Checksum
  • /wikipedia/zh-tw/校驗值
  • /wikipedia/zh-tw/校驗和
  • /wikipedia/zh-tw/校验值
  • /wikipedia/zh-tw/校验和
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