public static function ParagonIE_Sodium_Core_Curve25519::fe_sub in Automatic Updates 7

Same name and namespace in other branches

1. 8 vendor/paragonie/sodium_compat/src/Core/Curve25519.php \ParagonIE_Sodium_Core_Curve25519::fe_sub()

Subtract two field elements.

h = f - g

Preconditions: |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.

Postconditions: |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.

@internal You should not use this directly from another application

@psalm-suppress MixedOperand

Parameters

ParagonIE_Sodium_Core_Curve25519_Fe $f:

ParagonIE_Sodium_Core_Curve25519_Fe $g:

Return value

ParagonIE_Sodium_Core_Curve25519_Fe

10 calls to ParagonIE_Sodium_Core_Curve25519::fe_sub()

ParagonIE_Sodium_Core_Curve25519::ge_add in vendor/paragonie/sodium_compat/src/Core/Curve25519.php

Add two group elements.

ParagonIE_Sodium_Core_Curve25519::ge_frombytes_negate_vartime in vendor/paragonie/sodium_compat/src/Core/Curve25519.php

@internal You should not use this directly from another application

ParagonIE_Sodium_Core_Curve25519::ge_madd in vendor/paragonie/sodium_compat/src/Core/Curve25519.php

@internal You should not use this directly from another application

ParagonIE_Sodium_Core_Curve25519::ge_msub in vendor/paragonie/sodium_compat/src/Core/Curve25519.php

@internal You should not use this directly from another application

ParagonIE_Sodium_Core_Curve25519::ge_p2_dbl in vendor/paragonie/sodium_compat/src/Core/Curve25519.php

@internal You should not use this directly from another application

... See full list

File

vendor/paragonie/sodium_compat/src/Core/Curve25519.php, line 1225

Class

ParagonIE_Sodium_Core_Curve25519

Class ParagonIE_Sodium_Core_Curve25519

Code

public static function fe_sub(ParagonIE_Sodium_Core_Curve25519_Fe $f, ParagonIE_Sodium_Core_Curve25519_Fe $g) {
  return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray(array(
    (int) ($f[0] - $g[0]),
    (int) ($f[1] - $g[1]),
    (int) ($f[2] - $g[2]),
    (int) ($f[3] - $g[3]),
    (int) ($f[4] - $g[4]),
    (int) ($f[5] - $g[5]),
    (int) ($f[6] - $g[6]),
    (int) ($f[7] - $g[7]),
    (int) ($f[8] - $g[8]),
    (int) ($f[9] - $g[9]),
  ));
}