Generate a random generichash key

# sodium_crypto_generichash_keygen

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_generichash_keygen — Generate a random generichash key

### Description

sodium_crypto_generichash_keygen(): string

Generate a random key for use with the generichash API.

### Parameters

This function has no parameters.

### Return Values

A random 256-bit key.

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