sodium_crypto_scalarmult_ristretto255

Function • Added in PHP 8.1

Computes a shared secret.

PHP 5

PHP 7

PHP 8.0

Added

PHP 8.2

PHP 8.3

PHP 8.4

PHP 8.5

`sodium_crypto_scalarmult_ristretto255` Function synopsis

sodium_crypto_scalarmult_ristretto255(string $n, string $p): string

Parameters

`$n`

Typestring

A scalar, which is typically a secret key.

`$p`

Typestring

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

Return value

Typestring

Returns a 32-byte random string.

Changes to the `sodium_crypto_scalarmult_ristretto255` Function

PHP 8.1

Function added

`sodium_crypto_scalarmult_ristretto255` Function Availability

PHP Version	Availability
PHP 8.5Future Release	Yes
PHP 8.4Upcoming Release	Yes
PHP 8.3Supported (Latest)	Yes
PHP 8.2Supported	Yes
PHP 8.1Security-Fixes Only	Yes
PHP 8.0Unsupported	No
PHP 7.4Unsupported	No
PHP 7.3Unsupported	No
PHP 7.2Unsupported	No
PHP 7.1Unsupported	No
PHP 7.0Unsupported	No
PHP 5.6Unsupported	No
PHP 5.5Unsupported	No
PHP 5.4Unsupported	No
PHP 5.3Unsupported	No