What is the main difference between pseudonymization—Hash Functions and Tokenization?
Understand the Problem
The question is asking for the main difference between two data protection techniques: pseudonymization via hash functions and tokenization. It presents multiple-choice options to clarify these differences in how they handle original data.
Answer
Hash functions are typically irreversible, while tokenization allows for original data retrieval through a tokenization system.
The main difference between pseudonymization via hash functions and tokenization is that tokenization involves a system to map tokens back to the original data, whereas hash functions usually provide irreversible transformations.
Answer for screen readers
The main difference between pseudonymization via hash functions and tokenization is that tokenization involves a system to map tokens back to the original data, whereas hash functions usually provide irreversible transformations.
More Information
Tokenization uses a unique identifier or token, and the system must be securely maintained to ensure that data can be accurately retrieved when necessary. Hash functions often provide one-way encryption, meaning the data cannot be transformed back to its original form.
Tips
Confusing tokenization with encryption is common, as both can protect data. However, encryption involves a mathematical process to encode data, while tokenization substitutes data with a placeholder.
Sources
- Pseudonymization vs Tokenization: Benefits and Differences - K2view - k2view.com
- Pseudonymization | Sensitive Data Protection Documentation - cloud.google.com
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