TIGER160,4 Hash Tool
Other Hash Generator
MD2 MD4 MD5 SHA1 SHA224 SHA256 SHA384 SHA512/224 SHA512/256 SHA512 SHA3-224 SHA3-256 SHA3-384 SHA3-512 RIPEMD128 RIPEMD160 RIPEMD256 RIPEMD320 WHIRLPOOL TIGER128,3 TIGER160,3 TIGER192,3 TIGER128,4 TIGER160,4 TIGER192,4 SNEFRU SNEFRU256 GOST GOST-CRYPTO ADLER32 CRC32 CRC32B CRC32C FNV132 FNV1A32 FNV164 FNV1A64 JOAAT MURMUR3A MURMUR3C MURMUR3F XXH32 XXH64 XXH3 XXH128 HAVAL128,3 HAVAL160,3 HAVAL192,3 HAVAL224,3 HAVAL256,3 HAVAL128,4 HAVAL160,4 HAVAL192,4 HAVAL224,4 HAVAL256,4 HAVAL128,5 HAVAL160,5 HAVAL192,5 HAVAL224,5 HAVAL256,5The tiger160,4 algorithm is a cryptographic hash function designed for high-performance message authentication and integrity verification. It belongs to the Tiger family of hash functions and is optimized for 64-bit architectures. The core structure of tiger160,4 consists of a series of operations that transform input data into a fixed-length 160-bit output, ensuring strong resistance against collisions, preimage, and second-preimage attacks.
Input Processing
The input to tiger160,4 is divided into 512-bit blocks. Each block undergoes a preprocessing stage, which includes padding the final block to align with the 512-bit requirement and appending the length of the original message in bits. This ensures that the algorithm can process messages of arbitrary length while maintaining a consistent output size.
Initialization
The algorithm initializes with three 64-bit state variables, commonly labeled as a, b, and c. These state variables are set to predefined constants that provide a strong initial mixing state. Proper initialization is critical to the security of the hash function, as it prevents trivial collisions and predictable outputs.
Round Function
Tiger160,4 applies four rounds of processing per message block. Each round consists of a sequence of S-box lookups, modular addition, bitwise XOR, and bit rotation operations. The S-boxes are fixed substitution tables that introduce non-linearity, while modular arithmetic and rotations ensure diffusion of input bits throughout the state variables. This combination of operations produces a highly scrambled intermediate state after each round.
Key Schedule
The algorithm employs a key schedule that determines the order and value of the message words used in each round. The key schedule generates a series of 64-bit values derived from the current message block, ensuring that every part of the input influences the state variables in multiple rounds. This design enhances resistance to differential and linear cryptanalysis.
Finalization
After processing all message blocks, the algorithm performs a final mixing step, combining the last state with the accumulated hash value. The output of this step is a 160-bit digest, which uniquely represents the input data. The digest is uniform, meaning small changes in input produce significant, unpredictable changes in output, a property known as the avalanche effect.
Security and Performance
Tiger160,4 offers strong cryptographic security with optimized performance on 64-bit processors. Its design balances speed and resistance against known attack vectors, making it suitable for applications requiring secure hash computation over large datasets. Implementation is straightforward, with the algorithm relying on well-defined mathematical operations without probabilistic elements or external dependencies.