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SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They differ in the word size; SHA-256 uses 32-bit words where SHA-512 uses 64-bit words. There are also truncated versions of each standard, known as SHA-224, SHA-384, SHA-512/224 and SHA-512/256. These were also designed by the NSA.
Using SHA-1 as a hash function, the password is stretched into a 128-bit key 50,000 times before opening the document; as a result, the time required to crack it is vastly increased, similar to PBKDF2, scrypt or other KDFs. [citation needed] Office 2010 employed AES and a 128-bit key, but the number of SHA-1 conversions doubled to 100,000. [4]
Hash function Security claim Best attack Publish date Comment GOST: 2 128: 2 105: 2008-08-18 Paper. [12]HAVAL-128 : 2 64: 2 7: 2004-08-17 Collisions originally reported in 2004, [13] followed up by cryptanalysis paper in 2005.
The block transformation f, which is Keccak-f[1600] for SHA-3, is a permutation that uses XOR, AND and NOT operations, and is designed for easy implementation in both software and hardware. It is defined for any power-of-two word size, w = 2 ℓ bits. The main SHA-3 submission uses 64-bit words, ℓ = 6.
Secure Hash Algorithm (SHA) Algorithm for computing a condensed representation of information FIPS PUB 180-4: Use SHA-384 or SHA-512 for all classification levels. Leighton-Micali Signature (LMS) Asymmetric algorithm for digitally signing firmware and software NIST SP 800-208: All parameters approved for all classification levels. SHA256/192 ...
Per CNSSP-15, the 256-bit elliptic curve (specified in FIPS 186-2), SHA-256, and AES with 128-bit keys are sufficient for protecting classified information up to the Secret level, while the 384-bit elliptic curve (specified in FIPS 186-2), SHA-384, and AES with 256-bit keys are necessary for the protection of Top Secret information.
Windows 10 is the last version of Microsoft Windows that supports 32-bit processors (IA-32 and ARMv7-based), the last non-IoT edition to officially lack a CPU whitelist [30] and support BIOS firmware, [31] [32] and the last version to officially support systems with TPM 1.2 or without any TPM at all.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... SHA-3: 224/256/384/512 [note 10] 1600 1600 - 2*bits
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