**Connected: An Internet Encyclopedia**

*6.4.7. RSA MD4 Cryptographic Checksum Using DES alternative*

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6. Encryption and Checksum Specifications

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### 6.4.7. RSA MD4 Cryptographic Checksum Using DES alternative

6.4.7. RSA MD4 Cryptographic Checksum Using DES alternative

(rsa-md4-des-k)

The RSA-MD4-DES-K checksum calculates a keyed collision-proof
checksum by applying the RSA MD4 checksum algorithm and encrypting
the results using DES in cipherblock-chaining (CBC) mode using a DES
key as both key and initialization vector. The resulting checksum is
16 octets long. This checksum is tamper-proof and believed to be
collision-proof. Note that this checksum type is the old method for
encoding the RSA-MD4-DES checksum and it is no longer recommended.

**Next:** 6.4.8. DES cipher-block chained checksum alternative (desmac-k)

**Connected: An Internet Encyclopedia**

*6.4.7. RSA MD4 Cryptographic Checksum Using DES alternative*