sodium_crypto_scalarmult
PHP function
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(PHP 7 >= 7.2.0, PHP 8)
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
nscalar, which is typically a secret key
ppoint (x-coordinate), which is typically a public key
Return Values
A 32-byte random string.