1. Home
2. Reference documentation
3. VCL reference
4. Functions
5. Cryptographic

Available inall subroutines.

Returns a CRC-32b digest for the string s. CRC-32b is not a cryptographic hash and is typically used as a fast error-detecting code for detecting changes in raw data. This function is a different algorithm than hash_crc32 and is not likely to return the same results given the same input string.

This algorithm is known as PKZip CRC-32 (ITU V.42), or more commonly CRC-32.

Example

declare local var.crc32b STRING;
set var.crc32b = digest.hash_crc32b("123456789");
# var.crc32b is now "2639f4cb"