Calculate CRC-64

What is CRC-64?

CRC-64 stands for Cyclic Redundancy Check (64-bit). It is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.

How CRC-64 Works

The CRC algorithm treats the input data as a large binary number and divides it by a specific divisor polynomial. The remainder of this division is the CRC value. During data transmission or storage, the CRC value is calculated and appended to the data. When the data is received or retrieved, the CRC is recalculated and compared to the original CRC value. If the values match, it indicates that the data has not been corrupted.

Polynomial Representation

The CRC-64 algorithm utilizes a 64-bit polynomial. One commonly used polynomial for CRC-64 is the ECMA-182 standard polynomial: x⁶⁴ + x⁶² + x⁵⁷ + x⁵⁵ + x⁵⁴ + x⁵¹ + x⁵⁰ + x⁴⁸ + x⁴⁷ + x⁴² + x⁴⁰ + x³⁹ + x³⁶ + x³⁴ + x³³ + x³² + x³¹ + x²⁹ + x²⁷ + x²⁴ + x²³ + x²¹ + x²⁰ + x¹⁹ + x¹⁷ + x¹² + x¹⁰ + x⁹ + x⁷ + x⁴ + x + 1

Applications of CRC-64

• Data Storage: Ensuring data integrity on hard drives and other storage media.
• Network Protocols: Verifying data transmission accuracy in network communication.
• File Verification: Detecting if a file has been altered or corrupted.

Many other hashing algorithms are available, such as Calculate SHA-512 and Calculate MD5.