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
In the following list of devices, which device is used in datalink layer?
In computer processing, __________ selects processes from the pool and loads them into memory for execution.
Which is not an external storage device?
The network is overloaded with enormous data sent by many computers within the network. The inability of the network to deliver the data is termed as __________ .
Which of the following technologies allows real-time communication over the Internet, such as voice and video calls, without requiring additional software or hardware beyond a web browser?
