# Wrap Implementations for LocalWrap and SecretWrap

The following prefixes have been implemented in the PHP library.

| Prefix | Key-Wrapping Protocol                            | Owner                                                   |
|--------|--------------------------------------------------|---------------------------------------------------------|
| `pie`  | [PASERK standard wrapping protocol](pie.md)      | [Paragon Initiative Enterprises](https://paragonie.com) |

See [this section of the PASERK specification for all registered prefixes](https://github.com/paseto-standard/paserk/blob/master/operations/Wrap.md#registered-prefixes),
whether they're implemented in the PHP library or not.
