-Key distribution and management is a crucial issue -Diffie–Hellman key(securely exchanging cryptographic keys over a public channel) -The Internet Key Exchange (IKE):Internet Key Exchange (IKE) is a secure key management protocol that is used to set up a secure, authenticated communications channel between two devices.

1. Key Agreement,
Distribution, and Security
Bootstrapping
SNEHA S K
Msc CS
Bishop Heber College, Trichy

2.  Key distribution and management is a crucial issue
 Diffie–Hellman key(securely exchanging cryptographic keys
over a public channel)
 The Internet Key Exchange (IKE):Internet Key Exchange (IKE)
is a secure key management protocol that is used to set up a
secure, authenticated communications channel between two
devices.

3. Key Agreement Protocols
Asymmetric (public-key) cryptographic algorithms
polynomial-based key pre-distribution protocol
Alternative key agreement protocol is SPINS
SPINS- Sensor Protocol for Information via Negotiation
It is Security Protocols for Sensor Networks
Chan et al.

4. Shared Group-key Distribution
confidentiality, authenticity, and integrity of messages
1) a former member of the groups cannot access current
communications(“forward secrecy”) [158];
2)a new member cannot access previous communication
(“backward secrecy” [159]).
 nodes must share some cryptographic material
 Handled both predictable and unpredictable, to be managed

5. Security Bootstrapping
 Require some credentials, either public/private key pairs,
symmetric keys, certificates, or others, have been installed and
configured on nodes beforehand
 Bootstrapping –is a processing operations that is required before
the network can operate
 Important phase in the lifecycle of smart objects