wp-includes/sodium_compat/lib/php72compat.php:155$stringstring$variantintstring function sodium_bin2base64( #[\SensitiveParameter] $string, $variant ) { return ParagonIE_Sodium_Compat::bin2base64($string, $variant); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sodium_compat/lib/php72compat.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.