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# Changelog

All notable changes to Tokenizer are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.

## [1.2.3] - 2024-03-03

### Changed

* Do not use implicitly nullable parameters

## [1.2.2] - 2023-11-20

### Fixed

* [#18](https://github.com/theseer/tokenizer/issues/18): Tokenizer fails on protobuf metadata files


## [1.2.1] - 2021-07-28

### Fixed

* [#13](https://github.com/theseer/tokenizer/issues/13): Fatal error when tokenizing files that contain only a single empty line


## [1.2.0] - 2020-07-13

This release is now PHP 8.0 compliant.

### Fixed

* Whitespace handling in general (only noticable in the intermediate `TokenCollection`) is now consitent  

### Changed

* Updated `Tokenizer` to deal with changed whitespace handling in PHP 8.0
  The XMLSerializer was unaffected.


## [1.1.3] - 2019-06-14

### Changed

* Ensure XMLSerializer can deal with empty token collections

### Fixed

* [#2](https://github.com/theseer/tokenizer/issues/2): Fatal error in infection / phpunit


## [1.1.2] - 2019-04-04

### Changed

* Reverted PHPUnit 8 test update to stay PHP 7.0 compliant


## [1.1.1] - 2019-04-03

### Fixed

* [#1](https://github.com/theseer/tokenizer/issues/1): Empty file causes invalid array read 

### Changed

* Tests should now be PHPUnit 8 compliant


## [1.1.0] - 2017-04-07

### Added

* Allow use of custom namespace for XML serialization


## [1.0.0] - 2017-04-05

Initial Release

[1.2.3]: https://github.com/theseer/tokenizer/compare/1.2.2...1.2.3
[1.2.2]: https://github.com/theseer/tokenizer/compare/1.2.1...1.2.2
[1.2.1]: https://github.com/theseer/tokenizer/compare/1.2.0...1.2.1
[1.2.0]: https://github.com/theseer/tokenizer/compare/1.1.3...1.2.0
[1.1.3]: https://github.com/theseer/tokenizer/compare/1.1.2...1.1.3
[1.1.2]: https://github.com/theseer/tokenizer/compare/1.1.1...1.1.2
[1.1.1]: https://github.com/theseer/tokenizer/compare/1.1.0...1.1.1
[1.1.0]: https://github.com/theseer/tokenizer/compare/1.0.0...1.1.0
[1.0.0]: https://github.com/theseer/tokenizer/compare/b2493e57de80c1b7414219b28503fa5c6b4d0a98...1.0.0
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Enhancing Payment Security: The Role of Encryption and Tokenization in Digital Transactions

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational technologies that are pivotal in this effort are encryption and tokenization.
Encryption is a process that transforms data into a secure format, known as ciphertext, which can only be deciphered using a specific decryption key. This means that even if data is intercepted during transmission, it remains unreadable and protected from unauthorized access. Encryption is essential in safeguarding sensitive payment information, such as credit card details and personal data, during online transactions.
Tokenization, on the other hand, involves substituting sensitive data with unique identifiers or "tokens." These tokens serve as placeholders and have no value outside of the specific transaction context. If intercepted, tokens are meaningless and cannot be used to access the original sensitive data. This method significantly reduces the risk of fraud and data breaches, as the actual payment information is not stored or transmitted.
Together, encryption and tokenization form a powerful security framework. Encryption ensures that data is protected during transmission, while tokenization minimizes the risk of exposing sensitive information by replacing it with secure, non-sensitive tokens.
These technologies are integral to modern payment platforms, providing a robust defense against cyber threats. By implementing advanced encryption and tokenization techniques, businesses can enhance the security of digital transactions, ensuring that users' financial and personal information remains safe. This comprehensive approach not only builds user trust but also fortifies the overall security infrastructure of digital payment systems. As cyber threats evolve, the continued advancement of encryption and tokenization will be crucial in maintaining secure and reliable payment processes.

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