**Connected: An Internet Encyclopedia**

*6.4.1. The CRC-32 Checksum (crc32)*

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### 6.4.1. The CRC-32 Checksum (crc32)

6.4.1. The CRC-32 Checksum (crc32)
The CRC-32 checksum calculates a checksum based on a cyclic
redundancy check as described in ISO 3309 [14]. The resulting
checksum is four (4) octets in length. The CRC-32 is neither keyed
nor collision-proof. The use of this checksum is not recommended.
An attacker using a probabilistic chosen-plaintext attack as
described in [13] might be able to generate an alternative message
that satisfies the checksum. The use of collision-proof checksums is
recommended for environments where such attacks represent a
significant threat.

**Next:** 6.4.2. The RSA MD4 Checksum (rsa-md4)

**Connected: An Internet Encyclopedia**

*6.4.1. The CRC-32 Checksum (crc32)*