Verifies that data matches the signature created by public_key and the digest algorithm.
Update RubyGems software to the latest version.
Updates the TarHeader’s checksum
Does this dependency request match spec?
NOTE: matches_spec? matches prerelease versions. See also match?
Returns true if this gem is installable for the current platform.
Returns true if this gem is installable for the current platform.
Returns true if this specification is installable on this platform.