ParagonIE_Sodium_Core32_Curve25519

Description

Compatibility

Present in every tracked release (6.7.10 to 7.1.3).

Methods · 42

• fe_0()Get a field element of size 10 with a value of 0
• fe_1()Get a field element of size 10 with a value of 1
• fe_add()Add two field elements.
• fe_cmov()Constant-time conditional move.
• fe_copy()Create a copy of a field element.
• fe_frombytes()Give: 32-byte string.
• fe_tobytes()Convert a field element to a byte string.
• fe_isnegative()Is a field element negative? (1 = yes, 0 = no. Used in calculations.)
• fe_isnonzero()Returns 0 if this field element results in all NUL bytes.
• fe_mul()Multiply two field elements
• fe_neg()Get the negative values for each piece of the field element.
• fe_sq()Square a field element
• fe_sq2()Square and double a field element
• fe_invert()
• fe_pow22523()
• fe_sub()Subtract two field elements.
• ge_add()Add two group elements.
• slide()
• ge_frombytes_negate_vartime()
• ge_madd()
• ge_msub()
• ge_p1p1_to_p2()
• ge_p1p1_to_p3()
• ge_p2_0()
• ge_p2_dbl()
• ge_p3_0()
• ge_p3_to_cached()
• ge_p3_to_p2()
• ge_p3_tobytes()
• ge_p3_dbl()
• ge_precomp_0()
• equal()
• negative()
• cmov()Conditional move
• ge_select()
• ge_sub()Subtract two group elements.
• ge_tobytes()Convert a group element to a byte string.
• ge_double_scalarmult_vartime()
• ge_scalarmult_base()
• sc_muladd()Calculates (ab + c) mod l where l = 2^252 + 27742317777372353535851937790883648493
• sc_reduce()
• ge_mul_l()multiply by the order of the main subgroup l = 2^252+27742317777372353535851937790883648493

Source code

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16abstract class ParagonIE_Sodium_Core32_Curve25519 extends ParagonIE_Sodium_Core32_Curve25519_H17{18    /**19     * Get a field element of size 10 with a value of 020     *21     * @internal You should not use this directly from another application22     *23     * @return ParagonIE_Sodium_Core32_Curve25519_Fe24     * @throws SodiumException25     * @throws TypeError26     */27    public static function fe_0()28    {29        return ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray(30            array(31                new ParagonIE_Sodium_Core32_Int32(),32                new ParagonIE_Sodium_Core32_Int32(),33                new ParagonIE_Sodium_Core32_Int32(),34                new ParagonIE_Sodium_Core32_Int32(),35                new ParagonIE_Sodium_Core32_Int32(),36                new ParagonIE_Sodium_Core32_Int32(),37                new ParagonIE_Sodium_Core32_Int32(),38                new ParagonIE_Sodium_Core32_Int32(),39                new ParagonIE_Sodium_Core32_Int32(),40                new ParagonIE_Sodium_Core32_Int32()41            )42        );43    }44 45    /**46     * Get a field element of size 10 with a value of 147     *48     * @internal You should not use this directly from another application49     *50     * @return ParagonIE_Sodium_Core32_Curve25519_Fe51     * @throws SodiumException52     * @throws TypeError53     */54    public static function fe_1()55    {56        return ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray(57            array(58                ParagonIE_Sodium_Core32_Int32::fromInt(1),59                new ParagonIE_Sodium_Core32_Int32(),60                new ParagonIE_Sodium_Core32_Int32(),61                new ParagonIE_Sodium_Core32_Int32(),62                new ParagonIE_Sodium_Core32_Int32(),63                new ParagonIE_Sodium_Core32_Int32(),64                new ParagonIE_Sodium_Core32_Int32(),65                new ParagonIE_Sodium_Core32_Int32(),66                new ParagonIE_Sodium_Core32_Int32(),67                new ParagonIE_Sodium_Core32_Int32()68            )69        );70    }71 72    /**73     * Add two field elements.74     *75     * @internal You should not use this directly from another application76     *77     * @param ParagonIE_Sodium_Core32_Curve25519_Fe $f78     * @param ParagonIE_Sodium_Core32_Curve25519_Fe $g79     * @return ParagonIE_Sodium_Core32_Curve25519_Fe80     * @throws SodiumException81     * @throws TypeError82     * @psalm-suppress MixedAssignment83     * @psalm-suppress MixedMethodCall84     */85    public static function fe_add(86        ParagonIE_Sodium_Core32_Curve25519_Fe $f,87        ParagonIE_Sodium_Core32_Curve25519_Fe $g88    ) {89        $arr = array();90        for ($i = 0; $i < 10; ++$i) {91            $arr[$i] = $f[$i]->addInt32($g[$i]);92        }93        /** @var array<int, ParagonIE_Sodium_Core32_Int32> $arr */94        return ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray($arr);95    }

Changelog

Unchanged from 6.7.10 through 7.1.3.

1. 6.7.10
2. 6.8.11
3. 6.9.10
4. 7.0.7
5. 7.1.3

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 6.8.11 tag, from src/wp-includes/sodium_compat/src/Core32/Curve25519.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

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