sodium_crypto_scalarmult

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_scalarmult — Compute a shared secret given a user's secret key and another user's public key

    Description

    sodium_crypto_scalarmult(string $n, string $p): string

    Elliptic Curve Diffie-Hellman. Calculates scalar n times point p, on an elliptic curve.

    Parameters

    n

    scalar, which is typically a secret key

    p

    point (x-coordinate), which is typically a public key

    Return Values

    A 32-byte random string.

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