split key
noun1
Engineering, Natural sciences, Physical sciences A key split at one end like a split pin, for the same purpose.
- A split pin is also a split key, because both are used to lock or fasten pieces of machinery together.1869, Cameron Knight, The Mechanician and Constructor for Engineers:
- In a rail-stay, the combination of a bar, with rail-clamping means associated with the bar at each end, a spilt key to hold said means in engagement with the rail flange, and a fixed projection to force the leaves of the split key apart.1907, Official Gazette of the United States Patent Office, page 1292:
1 more example
- I am of the opinion, upon the evidence, that, although provision was made in the bolt for the split key, as a matter of fact no split key had ever been inserted.1914, Dominion Law Reports - Volume 14, page 703:
2
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences A key value used to identify where to split the children of a parent node in a B-tree or similar data structure.
- As with B+-trees, records with keys greater than or equal to the split key go to a new current node, records with keys less than the split key remain in the original node.1990, Hector Garcia-Molina, H. V. Jagadish, Proceedings of the 1990 ACM SIGMOD International Conference on Management of Data., page 353:
- The region is split into two logical daughter regions. The split is not done physically at this point to make the splitting process fast. The split is maintained as a split key, which is a key in the middle of the key range maintained for the region.2014, Jason Venner, Sameer Wadkar, Madhu Siddalingaiah, Pro Apache Hadoop, →ISBN, page 310:
1 more example
- Take the key in the parent node that splits the left sibling and the leaf, the split key, and insert it into the leaf.2016, Christopher G. Healey, Disk-Based Algorithms for Big Data, →ISBN:
3
Computing, Cryptography, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences A cryptographic key that is divided into two or more values that individually cannot be used to deduce the entire key.
- Moreover, even those systems (such as split key systems) that can decrease these risks, do so with a marked increase in cost.1997, Cryptography and Privacy Sourcebook, →ISBN, page 15:
- A toolkit for split key cryptography in and of itself is (almost) a byproduct of developing ultra-high assurance applications such as root certifying authorities.2007, Matt Blaze, Financial Cryptography, →ISBN, page 233:
1 more example
- Camenisch et al. [CCGS10] define, among other things, split key exchange and give a construction based on the decisional Diffie-Hellman assumption.2014, Michel Abdalla, Roberto De Prisco, Security and Cryptography for Networks, →ISBN, page 45: