# UUID package for Go language

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This package provides pure Go implementation of Universally Unique Identifier (UUID). Supported both creation and parsing of UUIDs.

With 100% test coverage and benchmarks out of box.

Supported versions:
* Version 1, based on timestamp and MAC address (RFC 4122)
* Version 2, based on timestamp, MAC address and POSIX UID/GID (DCE 1.1)
* Version 3, based on MD5 hashing (RFC 4122)
* Version 4, based on random numbers (RFC 4122)
* Version 5, based on SHA-1 hashing (RFC 4122)

## Installation

Use the `go` command:

	$ go get github.com/satori/go.uuid

## Requirements

UUID package requires Go >= 1.2.

## Example

```go
package main

import (
	"fmt"
	"github.com/satori/go.uuid"
)

func main() {
	// Creating UUID Version 4
	// panic on error
	u1 := uuid.Must(uuid.NewV4())
	fmt.Printf("UUIDv4: %s\n", u1)

	// or error handling
	u2, err := uuid.NewV4()
	if err != nil {
		fmt.Printf("Something went wrong: %s", err)
		return
	}
	fmt.Printf("UUIDv4: %s\n", u2)

	// Parsing UUID from string input
	u2, err := uuid.FromString("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
	if err != nil {
		fmt.Printf("Something went wrong: %s", err)
	}
	fmt.Printf("Successfully parsed: %s", u2)
}
```

## Documentation

[Documentation](http://godoc.org/github.com/satori/go.uuid) is hosted at GoDoc project.

## Links
* [RFC 4122](http://tools.ietf.org/html/rfc4122)
* [DCE 1.1: Authentication and Security Services](http://pubs.opengroup.org/onlinepubs/9696989899/chap5.htm#tagcjh_08_02_01_01)

## Copyright

Copyright (C) 2013-2018 by Maxim Bublis <b@codemonkey.ru>.

UUID package released under MIT License.
See [LICENSE](https://github.com/satori/go.uuid/blob/master/LICENSE) for details.