HAS-160

HAS-160 is a cryptographic hash function designed for use with the Korean KCDSA digital signature algorithm. It is derived from SHA-1, with assorted changes intended to increase its security. It produces a 160-bit output.

HAS-160 is used in the same way as SHA-1. First it divides input in blocks of 512 bits each and pads the final block. A digest function updates the intermediate hash value by processing the input blocks in turn.

The message digest algorithm consists of 80 rounds.

External links

A description of HAS-160, and some test vectors.
RHash, an open source command-line tool capable of calculating HAS-160.

Hash functions & message authentication codes

Security summary

Common functions	MD5 SHA-1 SHA-2 SHA-3/Keccak

SHA-3 finalists	BLAKE Grøstl JH Skein Keccak (winner)

Other functions	FSB ECOH GOST HAS-160 HAVAL Kupyna LM hash MDC-2 MD2 MD4 MD5 MD6 N-Hash RadioGatún RIPEMD SipHash Snefru Streebog SWIFFT Tiger VSH WHIRLPOOL

MAC algorithms	DAA CBC-MAC HMAC OMAC/CMAC PMAC VMAC UMAC Poly1305

Authenticated encryption modes	CCM CWC EAX GCM IAPM OCB

Attacks	Collision attack Preimage attack Birthday attack Brute force attack Rainbow table Side-channel attack Length extension attack

Design	Avalanche effect Hash collision Merkle–Damgård construction

Standardization	CRYPTREC NESSIE NIST hash function competition

Utilization	Salt Key stretching Message authentication

Key derivation functions	bcrypt crypt(3) (DES) PBKDF2 scrypt Argon2

Cryptography

History of cryptography Cryptanalysis Outline of cryptography

Symmetric-key algorithm Block cipher Stream cipher Public-key cryptography Cryptographic hash function Message authentication code Random numbers Steganography

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