paragonie/constant_time_encoding (packagist): Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)
Keywords: base64|base32|encoding|rfc4648|hex|base16|bin2hex|hex2bin|base64_encode|base64_decode|base32_encode|base32_decode|base32hex|base64-urlsafe|base64url|cache-timing-safe|character-encoding|constant-time|hexadecimal|php|rfc-4648|url-safe|urlsafe