The _______ method is commonly used to verify the integrity of data.
Hashing
Hashing and Data Integrity Verification
Hashing is a cryptographic technique used to verify the integrity of data by converting it into a fixed-length string of characters (hash value). When data is stored or transmitted, a hash function generates a unique hash. If the data is altered in any way, even by a single bit, the hash value will change significantly, indicating data corruption or tampering.
Common Hashing Algorithms for Data Integrity:
- MD5 (Message Digest Algorithm 5) – Fast but vulnerable to collisions.
- SHA (Secure Hash Algorithm) – SHA-1, SHA-256, SHA-512 – More secure and widely used in cryptography.
- CRC (Cyclic Redundancy Check) – Used in error detection during data transmission.
Uses of Hashing in Data Integrity Verification:
- File integrity checking (e.g., comparing downloaded files using MD5 or SHA hashes).
- Password security (storing hashed passwords instead of plaintext passwords).
- Digital signatures and certificates (ensuring document authenticity).
- Data deduplication and indexing (efficient searching in databases).
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Important Questions from Fundamentals of Computer
Which file extension is most commonly used for executable installation files on a Windows system?
ROM is primarily used for which of the following purposes?
What is the purpose of enabling passwords on a PC?
Which of the following actions can typically be performed in the Outbox?
Which of the following scenarios correctly illustrates the interdependence of system software and application software?
