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5

Short answer is "data STILL readable but just behind a password". It is rare that anything in RAM is encrypted, simply because it would require some sort of a password to decrypt, and most passwords would reside in RAM anyhow. Going a bit further with this, the decryption password for the majority of disk-encryption programs would actually also (ironically)...


4

Always encrypting the same text to the same value leads to data leakage, violating semantic security. To prevent this, CBC mode uses an initialization vector (IV). The IV is just a random string of bits equal to the block size of the cipher. This is XORed with the first block of clear-text to be encrypted. This makes the first encrypted block random. Each ...


1

If your main objective is to ensure integrity and authenticity, and not confidentiality, it sounds like what you want is not encryption, but message authentication (symmetric, like HMAC) or a digital signature (asymmetric, like RSA). Since you mention third parties, it's likely that signing with an asymmetric system should be used, since with a symmetric ...


1

OpenSSL implements almost a dozen symmetric ciphers, and several dozen cipher-mode combinations, but provides a (nearly) single interface to all of them in the EVP module (i.e. external function and type names beginning EVP_) documented here online or in the (crosslinked) man page for EVP_{Cipher,Encrypt,Decrypt}* and EVP_CIPHER_* and EVP_CIPHER_CTX_* on any ...


1

an encryption patent is a contradiction in terms these days. nobody (in the large) is going to spend the effort to evaluate a patented method. at best, you would read the patent filing and determine that it's a cheesy version of something that exists and expose yourself to triple damages because you read a patent that should have been rejected based on an ...


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The encryption key for full disk or partial disk encryption are stored in RAM while the OS is operational. How are the disk encryption keys protected when a laptop is locked? If the device is shut down, then RAM is cleared, thereby securing your keys. If RAM is really cold, it will last awhile longer, so one technique to extracting RAM is to freeze ...



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