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Cipher block chaining (CBC) is a method for encrypting large amounts of data with a block cipher that can only encrypt fixed length plaintexts. When used with an unpredictable initialization vector (IV), it is secure against chosen plaintext attacks (CPA-secure).
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How HMAC is calculated for TLS AES_128_CBC_SHA
The RFC 5246 defines generic block cipher as follow:
struct {
opaque IV[SecurityParameters.record_iv_length];
block-ciphered struct {
opaque content[TLSCompressed.length];
…
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Cut through mode for TLS AES-CBC / SHA ciphersuite
I am looking at RFC5246 and it seems that AES-CBC/SHA cipher suites cannot be implemented in a cut-through mode.
Let's suppose that received record spans two segments. …