common encrytion algorithms and methods: DES RSA Triple DES Diffie-Hellman key e

Question

common encrytion algorithms and methods:
DES
RSA
Triple DES
Diffie-Hellman key exchange
IDEA
EL Gamel encrytion algorithm
CAST
ECC
Blowfish
SSL
AES
Digital signature



Scenario:

NetSeclt is a multinational IT services company consisiting of 100,000 computers that have internet access and 40,000 servers. ALl employees communicate using smartphones and email. Many employees work from home and travel extensively. Netselt would like to implement an asymmetric general-purpose encryption technology that is very diffcult to break and has a compact design so that there is not a lot of overhead. Select an encryption solution that best meets the comoanys needs and justify the recommendation.

Explanation / Answer

>NetSeclt is a multinational IT services company consisiting of 100,000 computers that have internet access and 40,000 servers.
>Many employees work from home and travel extensively.

From this we know that most of the IT service are built online (Web Service?)

>ALl employees communicate using smartphones and email.
Which means the method used must be friendly on most platforms (Smartphones, PCs, Macs, etc.)

DES is no longer proven hard to crack and is replaced by 3DES and ultimately AES, so it's out of the picture.
Most of the others seems to fit the description, however when comes to Web Services and mobility, I lean towards RSA(Used to encoding), SSL(Used to verify the Web Interface), and Digital Signatures (used as an app on a smartphone or a program on PC/MAC that generate and verify the signatures)

Still, because I don't know what the question are actually implying, I cannot give out one exact answer.

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