Constant-Size Credential-Based Packet Forwarding Verification in SDN

Table 1

Some major notations used in the paper.

Notation	Meaning
||	Concatenation of strings
H 1 (ˑ)	Hash function
H 2 (ˑ)	Hash function
Hash (ˑ)	Cryptographic hash operation function
MACK (ˑ)	Message authentication code operation using key K
N i	Switch identifier
PKi	Switch node Ni’s public key
SKi	Switch Node Ni’s private key
PATH	Flow path information
MACi	Message authentication code
SID	Flow identifier
	k independent hash operation functions
Payload	Payload in a packet
PVF	Field enabling node Ni to verify the packet
PktHash	Digest of the packet’s payload
L	Flow path length
ski	Anonymous key shared between N0 and Ni