![]() ![]() With a block cipher, the algorithm encrypts and decrypts the message block by block. ![]() With a stream cipher, the algorithm encrypts and decrypts the message 1 bit at a time. Block size refers to the block cipher of which there are two types: stream cipher and block cipher. AES provides a family of ciphers with different key and block sizes. ![]() The AES specification for the encryption of electronic data was established by the US National Institute of Standards and Technology (NIST) in 2001. AES 256 is generally regarded as among the safest encryption types available and it is widely used by national governments, public safety departments and agencies. For Advanced encryption, DMR radios use either 128-bit or AES (Advanced Encryption Standard) 256-bit. ![]()
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