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[2] Whirlpool is a hash designed after the Square block cipher, and is considered to be in that family of block cipher functions. Whirlpool is a Miyaguchi-Preneel construction based on a substantially modified Advanced Encryption Standard (AES). Whirlpool takes a message of any length less than 2 256 bits and returns a 512-bit message digest. [3]
Function Compress Input: h Persistent state vector chunk 128-byte (16 double word) chunk of message to compress t: Number, 0..2 128 Count of bytes that have been fed into the Compression IsLastBlock: Boolean Indicates if this is the final round of compression Output: h Updated persistent state vector Setup local work vector V V 0..7 ← h 0..7 ...
Salting helps defend against attacks that use precomputed tables (e.g. rainbow tables), by vastly growing the size of table needed for a successful attack. [2] [3] [4] It also helps protect passwords that occur multiple times in a database, as a new salt is used for each password instance. [5] Additionally, salting does not place any burden on ...
XOR/table Paul Hsieh's SuperFastHash [1] 32 bits Buzhash: variable XOR/table Fowler–Noll–Vo hash function (FNV Hash) 32, 64, 128, 256, 512, or 1024 bits xor/product or product/XOR Jenkins hash function: 32 or 64 bits XOR/addition Bernstein's hash djb2 [2] 32 or 64 bits shift/add or mult/add or shift/add/xor or mult/xor PJW hash / Elf Hash ...
It starts off with subkeys in a standard state, then uses this state to perform a block encryption using part of the key, and uses the result of that encryption (which is more accurate at hashing) to replace some of the subkeys. Then it uses this modified state to encrypt another part of the key, and uses the result to replace more of the subkeys.
The transparent element of TDE has to do with the fact that TDE encrypts on "the page level", which essentially means that data is encrypted when stored and decrypted when it is called into the system's memory. [9] The contents of the database are encrypted using a symmetric key that is often referred to as a "database encryption key". [2]
This table specifies the input permutation on a 64-bit block. The meaning is as follows: the first bit of the output is taken from the 58th bit of the input; the second bit from the 50th bit, and so on, with the last bit of the output taken from the 7th bit of the input.
Column level encryption is a type of database encryption method that allows user to select specific information or attributes to be encrypted instead of encrypting the entire database file. To understand why column level encryption is different from other encryption methods like file level encryption , disk encryption , and database encryption ...