Non-Cryptic Answers to Common Cryptography Questions

The SNIA Networking Storage Forum’s Storage Networking Security Webcast Series continues to examine the many different aspects of storage security. At our most recent webcast on applied cryptography, our experts dove into user authentication, data encryption, hashing, blockchain and more. If you missed the live event, you can watch it on-demand. Attendees of the live event had some very interesting questions on this topic and here are answer to them all:

Q. Can hashes be used for storage deduplication?  If so, do the hashes need to be 100% collision-proof to be used for deduplication?

A. Yes, hashes are often used for storage deduplication. It’s preferred that they be collision-proof but it’s not required if the deduplication software does a bit-by-bit comparison of any files that produce the same hash in order to verify if they really are identical or not. If the hash is 100% collision-proof then there is no need to run bit-by-bit comparisons of files that produce the same hash value.

Q. Do cloud or backup service vendors use blockchain proof of space to prove to customers how much storage space is available or has been reserved?   

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Applied Cryptography Techniques and Use Cases

The rapid growth in infrastructure to support real time and continuous collection and sharing of data to make better business decisions has led to an age of unprecedented information storage and easy access. While collection of large amounts of data has increased knowledge and allowed improved efficiencies for business, it has also made attacks upon that information—theft, modification, or holding it for ransom — more profitable for criminals and easier to accomplish. As a result, strong cryptography is often used to protect valuable data.

The SNIA Networking Storage Forum (NSF) has recently covered several specific security topics as part of our Storage Networking Security Webcast Series, including Encryption 101, Protecting Data at Rest, and Key Management 101. Now, on August 5, 2020, we are going to present Applied Cryptography. In this webcast, our SNIA experts will present an overview of cryptography techniques for the most popular and pressing use cases. We’ll discuss ways of securing data, the factors and trade-off that must be considered, as well as some of the general risks that need to be mitigated. We’ll be looking at:

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