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    sodium_crypto_kx_secretkey

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_kx_secretkey — Extract the secret key from a crypto_kx keypair.

    Description

    sodium_crypto_kx_secretkey(#[\SensitiveParameter] string $key_pair): string

    Extract the secret key from a crypto_kx keypair.

    Parameters

    key_pair

    X25519 keypair, such as one generated by sodium_crypto_kx_keypair().

    Return Values

    X25519 secret key.

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