Symfony Polyfill / Intl: Grapheme
=================================

This component provides a partial, native PHP implementation of the
[Grapheme functions](https://php.net/intl.grapheme) from the
[Intl](https://php.net/intl) extension.

- [`grapheme_extract`](https://php.net/grapheme_extract): Extract a sequence of grapheme
  clusters from a text buffer, which must be encoded in UTF-8
- [`grapheme_stripos`](https://php.net/grapheme_stripos): Find position (in grapheme units)
  of first occurrence of a case-insensitive string
- [`grapheme_stristr`](https://php.net/grapheme_stristr): Returns part of haystack string
  from the first occurrence of case-insensitive needle to the end of haystack
- [`grapheme_strlen`](https://php.net/grapheme_strlen): Get string length in grapheme units
- [`grapheme_strpos`](https://php.net/grapheme_strpos): Find position (in grapheme units)
  of first occurrence of a string
- [`grapheme_strripos`](https://php.net/grapheme_strripos): Find position (in grapheme units)
  of last occurrence of a case-insensitive string
- [`grapheme_strrpos`](https://php.net/grapheme_strrpos): Find position (in grapheme units)
  of last occurrence of a string
- [`grapheme_strstr`](https://php.net/grapheme_strstr): Returns part of haystack string from
  the first occurrence of needle to the end of haystack
- [`grapheme_substr`](https://php.net/grapheme_substr): Return part of a string

More information can be found in the
[main Polyfill README](https://github.com/symfony/polyfill/blob/main/README.md).

License
=======

This library is released under the [MIT license](LICENSE).

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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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