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Which of the following cryptographic algorithms is typically used in cellular phones?
AES
RSA
ECC
RC4
ECC (Elliptical Curve Cryptography) uses smaller key sizes and has lower resource requirements than RSA and other public key algorithms. For this reason, it is typically used to encrypt the session keys in devices like cellular phones, which run on batteries and are sensitive to power requirements. RSA is typically used for encrypting the session keys in SSL/TLS transactions, although ECC can also be used for this purpose. AES is a block cipher that is widely used for bulk data encryption. RC4 is a stream cipher that can be used for bulk data encryption, but is no longer considered secure for most purposes.
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