wp-includes/sodium_compat/src/Compat.php:2217$kpstringstring public static function crypto_kx_secretkey( #[\SensitiveParameter] $kp ) { return ParagonIE_Sodium_Core_Util::substr( $kp, 0, self::CRYPTO_KX_SECRETKEYBYTES ); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sodium_compat/src/Compat.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.