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Tokenization replaces sensitive data with non-sensitive tokens that are meaningless without access to the tokenization system.
Tokenization (in data security) is the process of substituting a sensitive data element with a non-sensitive equivalent called a token. The token has no intrinsic or exploitable meaning or value and functions as a reference (identifier) that can be mapped back to the original sensitive data only through a protected tokenization system. The core purpose of tokenization is to reduce risk by minimizing exposure of sensitive information to applications, stores, people, and processes that do not need access to the live data. Typically, a one-way cryptographic function or secure random generation is used to create tokens, and a secure “vault” maintains the mapping between tokens and sensitive data. Only the tokenization system (under strict security controls) can tokenize or detokenize, and tokenization is often used in payment card processing to help meet standards such as PCI DSS by replacing PANs with surrogate values.
Tokenization replaces sensitive data with non-sensitive tokens that are meaningless without access to the tokenization system.
A secure vault and one-way token generation prevent feasible reversal of tokens to live data outside authorized detokenization.
Tokenization reduces the scope of sensitive data exposure, helping lower breach and compliance risk (commonly in payment card systems).
A data security process that replaces sensitive data with non-sensitive tokens that can only be mapped back through a protected tokenization system.
A non-sensitive surrogate value that references the original sensitive data and has no intrinsic exploitable meaning on its own.
The reverse process of redeeming a token to retrieve its associated sensitive value (e.g., PAN) under strict controls.
The secured service or component that generates tokens and manages authorized token-to-sensitive-data lookups.
A secure repository that stores the mapping between tokens and the corresponding sensitive data.
A cryptographic method used to generate tokens so that reversing them to the original data is infeasible without system access.
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