sodium_crypto_core_ristretto255_scalar_sub

Function • Added in PHP 8.1

Subtracts a scalar value.

PHP 5

PHP 7

PHP 8.0

Added

PHP 8.2

PHP 8.3

PHP 8.4

PHP 8.5

`sodium_crypto_core_ristretto255_scalar_sub` Function synopsis

sodium_crypto_core_ristretto255_scalar_sub(string $x, string $y): string

Parameters

`$x`

Typestring

Scalar, representing the X coordinate.

`$y`

Typestring

Scalar, representing the Y coordinate.

Return value

Typestring

Returns a 32-byte random string.

Changes to the `sodium_crypto_core_ristretto255_scalar_sub` Function

PHP 8.1

Function added

`sodium_crypto_core_ristretto255_scalar_sub` 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