How to use zeroize in a sentence? Find typical usage patterns (collocations)/phrases/context for "zeroize" and check conjugation/comparative form for "zeroize". Mastering all the usages of "zeroize" from sentence examples published by news publications.
Cryptographic functions are performed by an internal KOV-21 crypto PC Card. The SDS includes 64 MB of RAM, 32 MB of flash read-only memory, a QWERTY keyboard, half-VGA color display, and a USB port. It also has a 6-pin connector for cabling to NSA standard fill connectors. The keyboard includes two zeroize buttons.
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One free tool that is commonly referenced in the industry is called HDDerase. GParted and Ubuntu live CDs provide a bootable Linux system of disk utilities including secure erase. Drives which encrypt all writes on the fly can implement ATA Secure Erase in another way. They simply zeroize and generate a new random encryption key each time a secure erase is done.
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The alphabet rotor would move during this process and their final position was the internal indicator. In case of joint operations, the Army procedures were followed. The key lists included a “26-30” check string. After the rotors were reordered according to the current key, the operator would zeroize the machine, encrypt 25 characters and then encrypt “AAAAA”. The ciphertext resulting from the five A’s had to match the check string.
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Late 20th century systems are just black boxes, often literally. In fact they are called blackers in NSA parlance because they convert plaintext classified signals (red) into encrypted unclassified ciphertext signals (black). They typically have electrical connectors for the red signals, the black signals, electrical power, and a port for loading keys. Controls can be limited to selecting between key fill, normal operation, and diagnostic modes and an all important zeroize button that erases classified information including keys and perhaps the encryption algorithms.
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Top view of SIGABA showing rotor assembly and Controller switch Because SIGABA did not have a reflector, a 26+ pole switch was needed to change the signal paths through the alphabet maze between the encryption and decryption modes. The long “controller” switch was mounted vertically, with its knob on the top of the housing. See image. It had five positions, O, P, R, E and D. Besides encrypt (E) and decrypt (D), it had a plain text position (P) that printed whatever was typed on the output tape, and a reset position (R) that was used to set the rotors and to zeroize the machine.
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The SIGABA was zeroized when all the index rotors read zero in their low order digit and all the alphabet and code rotors were set to the letter O. Each rotor had a cam that caused the rotor to stop in the proper position during the zeroize process. SIGABA’s rotors were all housed in a removable frame held in place by four thumb screws. This allowed the most sensitive elements of the machine to be stored in more secure safes and to be quickly thrown overboard or otherwise destroyed if capture was threatened. It also allowed a machine to quickly switch between networks that used different rotor orders.
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