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(PHP 8 >= 8.1.1)
sodium_crypto_scalarmult_ristretto255 — Computes a shared secret
$n, string $p): string
Calculates scalar n times point p.
Available as of libsodium 1.0.18.
本函数还未编写文档，仅有参数列表。
n
A scalar, which is typically a secret key.
p
A point (x-coordinate), which is typically a public key.
Returns a 32-byte random string.
