Cisco 2821 Series Operasi - Halaman 19

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The tamper evidence seals are produced from a special thin gauge vinyl with self-adhesive

backing. Any attempt to open the router will damage the tamper evidence seals or the material of

the module cover. Since the tamper evidence seals have non-repeated serial numbers, they can be

inspected for damage and compared against the applied serial numbers to verify that the module

has not been tampered. Tamper evidence seals can also be inspected for signs of tampering,

which include the following: curled corners, bubbling, crinkling, rips, tears, and slices. The word

"OPEN" may appear if the label was peeled back.

2.5 Cryptographic Key Management

The router securely administers both cryptographic keys and other critical security parameters

such as passwords. The tamper evidence seals provide physical protection for all keys. All keys

are also protected by the password-protection on the Crypto Officer role login, and can be

zeroized by the Crypto Officer. All zeroization consists of overwriting the memory that stored

the key. Keys are exchanged and entered electronically or via Internet Key Exchange (IKE) or

SSL handshake protocols.

The routers support the following FIPS-2 approved algorithm implementations:

Algorithm

AES

Triple-DES

SHA-1, SHA-256, SHA-512

HMAC-SHA-1

X9.31 PRNG

RSA

AES

Triple-DES

SHA-1

HMAC-SHA-1

AES

Triple-DES

SHA-1

HMAC-SHA-1

X9.31 PRNG

RSA

The router is in the approved mode of operation only when FIPS 140-2 approved algorithms are

used (except DH and RSA key transport which are allowed in the approved mode for key

establishment despite being non-approved).

Note: The module supports DH key sizes of 1024 and 1536 bits and RSA key sizes of 1024,

1536 and 2048 bits. Therefore, the Diffie Hellmann Key agreement, key establishment

methodology provides between 80-bits and 96-bits of encryption strength per NIST 800-57. RSA

This document may be freely reproduced and distributed whole and intact including this Copyright Notice.

Software (IOS) Implementations

Onboard NetGX Implementations

AIM Module Implementations

Algorithm Certificate Number

795

683

794

436

456

379

265

347

344

100

213

401

383