Shiro ADSL 2/2+ Ethernet Modem Uživatelský manuál stáhnout pdf (Strana 581)

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supporting DVB-RCS security

STLF-NA-TRD-REQ-2880 The SatLife System shall support Support different security profiles (i.e. a

specific set of cryptographic algorithms and parameters) for each channel's

keys, both unicast and multicast).

NA - -

STLF-NA-TRD-REQ-2890 The SatLife System shall support periodic rekeying of multicast channels -

this is usually performed at regular intervals to reduce the probability of

successful cryptanalysis of the encrypted traffic.

NA - -

STLF-NA-TRD-REQ-2900 The SatLife System shall support rekeying to perform ejection of a

compromised member of a multicast group

NA - -

STLF-NA-TRD-REQ-2910 During the negotiation phase the NCC and RCST shall agree on a specific

set of cryptographic algorithms and parameters used in the key exchange

protocols and for payload encryption:

 Public Key Algorithm

 Hash Algorithm

 Encryption Algorithm

 Nonce size

NA - -

STLF-NA-TRD-REQ-2920 Data shall be encrypted and decrypted with a symmetric block cipher. The

proposed algorithm is AES instead the DES algorithm proposed in DVB-RCS

specification, which is obsolete at the time being

NA - -

STLF-NA-TRD-REQ-2930 The cryptographic components:

 Public key algorithm: Diffie-Hellman, 512 bits

 Hash algorithm: HMAC-SHA1, 20-byte digest

 Encryption algorithm

 DES CBC 56 bit key with constant initialization vector

 DES CBC 40 bit key with constant initialization vector

 AES (Advanced Encryption Standard) algorithm with 128-bit key size

NA - -

STLF-NA-TRD-REQ-2940 The System shall provide terminal Authentication using RADIUS protocol. NA - -

STLF-NA-TRD-REQ-2950 Satellite dependent layer security shall not have any conflict with network

layer security (IPsec).

NA - -

STLF-NA-TRD-REQ-2960 The security services shall not degrade the overall performance of the

satellite network.

I - -

STLF-NA-TRD-REQ-2970 For ‘router mode’ RCSTs, the System shall provide the Internet/Intranet

Access service to UTs behind terminals having a private or public IP address,

performing static/dynamic NAT/NAPT when necessary.

I - -

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