TLDA: An Efficient Two-Layered Data Authentication Mechanism for Content-Centric Networking

Table 1

List of notations.

Notation	Meaning
,	private key for signing, public key for verification
, ,	Hash operation, RSA Sign, and Verify
, , ,	root hash, hash node, witness(authentication path) information, and root signature in MHT
	original content
, ,	size of content, size of hash, and size of segment
	the number of segments in
	the number of hash values which can be stored in a segment of
,	original data segment, -th data segment in original content where
	Data part
,	content name field and hash value of segment in Data part
	-th segment in Data part ,
	where
	hash value of -th segment in Data part ,
	where
	Meta part
	, the number of Meta part segments (Assume is multiple of )
,	content name field and hash value of segment in Meta part
	-th segment of Meta part,
	where = and
	where
	signed Meta part
	-th segment in signed Meta part ,
	where is the authentication path(sibling path)
		Encoded content = (signed Meta part Data part) = ()