Hawkynt

KangarooTwelve

Fast hashing based on Keccak-p[1600,12] with tree structure for parallel processing. NIST Lightweight Cryptography submission offering high performance and variable output length.

Properties

Property	Value
Category	Hash Functions
Sub-category	Extendable-Output Function (XOF)
Security status	🧪 Experimental
Complexity	Intermediate
Inventor	Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche, Ronny Van Keer
Year	2016
Origin	🇧🇪 Belgium
Source	algorithms/hash/kangaroo.js

Parameters

Parameter	Supported values
Digest sizes	1 byte (8 bits) to 8192 bytes (65536 bits)

Security

Status: 🧪 Experimental

No vulnerabilities are recorded for this implementation.

Documentation

• RFC 9861: KangarooTwelve and TurboSHAKE
• Official Website

References

• XKCP (eXtended Keccak Code Package) - Reference Implementation

Test vectors

21 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — KangarooTwelve Test Vector #1 - Empty input (32 bytes)

Field	Value
outputSize	32
input	(empty)
expected	1ac2d450fc3b4205d19da7bfca1b37513c0803577ac7167f06fe2ce1f0ef39e5

Vector 2 — KangarooTwelve Test Vector #2 - Empty input (64 bytes)

Field	Value
outputSize	64
input	(empty)
expected	1ac2d450fc3b4205d19da7bfca1b3751 3c0803577ac7167f06fe2ce1f0ef39e5 4269c056b8c82e48276038b6d292966c c07a3d4645272e31ff38508139eb0a71

Vector 3 — KangarooTwelve Test Vector #4 - 1 byte pattern

Field	Value
outputSize	32
input	00
expected	2bda92450e8b147f8a7cb629e784a058efca7cf7d8218e02d345dfaa65244a1f

Vector 4 — KangarooTwelve Test Vector #5 - 17 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f10
expected	6bf75fa2239198db4772e36478f8e19b0f371205f6a9a93a273f51df37122888

Vector 5 — KangarooTwelve Test Vector #6 - 289 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (289 bytes; the full value is in the source)
expected	0c315ebcdedbf61426de7dcf8fb725d1e74675d7f5327a5067f367b108ecb67c

Vector 6 — KangarooTwelve Test Vector #7 - 4913 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (4913 bytes; the full value is in the source)
expected	cb552e2ec77d9910701d578b457ddf772c12e322e4ee7fe417f92c758f0d59d0

Vector 7 — KangarooTwelve Test Vector #8 - 83521 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (83521 bytes; the full value is in the source)
expected	8701045e22205345ff4dda05555cbb5c3af1a771c2b89baef37db43d9998b9fe

Vector 8 — KangarooTwelve Test Vector #9 - 1419857 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (1419857 bytes; the full value is in the source)
expected	844d610933b1b9963cbdeb5ae3b6b05cc7cbd67ceedf883eb678a0a8e0371682

Vector 9 — KangarooTwelve Test Vector #10 - 24137569 bytes pattern

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (24137569 bytes; the full value is in the source)
expected	3c390782a8a4e89fa6367f72feaaf13255c8d95878481d3cd8ce85f58e880af8

Vector 10 — KangarooTwelve Test Vector #11 - Empty input, 1 byte personalization

Field	Value
personalization	00
outputSize	32
input	(empty)
expected	fab658db63e94a246188bf7af69a133045f46ee984c56e3c3328caaf1aa1a583

Vector 11 — KangarooTwelve Test Vector #12 - 1 byte 0xFF, 41 bytes personalization

Field	Value
personalization	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728
outputSize	32
input	ff
expected	d848c5068ced736f4462159b9867fd4c20b808acc3d5bc48e0b06ba0a3762ec4

Vector 12 — KangarooTwelve Test Vector #13 - 3 bytes 0xFF, 1681 bytes personalization

Field	Value
personalization	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (1681 bytes; the full value is in the source)
outputSize	32
input	ffffff
expected	c389e5009ae57120854c2e8c64670ac01358cf4c1baf89447a724234dc7ced74

Vector 13 — KangarooTwelve Test Vector #14 - 7 bytes 0xFF, 68921 bytes personalization

Field	Value
personalization	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (68921 bytes; the full value is in the source)
outputSize	32
input	ffffffffffffff
expected	75d2f86a2e644566726b4fbcfc5657b9dbcf070c7b0dca06450ab291d7443bcf

Vector 14 — KangarooTwelve: 8192-byte pattern (last single-node length)

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (8192 bytes; the full value is in the source)
expected	48f256f6772f9edfb6a8b661ec92dc93

Vector 15 — KangarooTwelve: 8193-byte pattern (first tree-hashed length)

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (8193 bytes; the full value is in the source)
expected	bb66fe72eaea5179418d5295ee134485

Vector 16 — KangarooTwelve: 16384-byte pattern (two full chunks)

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (16384 bytes; the full value is in the source)
expected	82778f7f7234c83352e76837b721fbdb

Vector 17 — KangarooTwelve: 16385-byte pattern

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (16385 bytes; the full value is in the source)
expected	5f8d2b943922b451842b4e82740d0236

Vector 18 — KangarooTwelve: 24576-byte pattern (three full chunks)

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (24576 bytes; the full value is in the source)
expected	f4082a8fe7d1635aa042cd1da63bf235

Vector 19 — KangarooTwelve: 24577-byte pattern

Field	Value
outputSize	16
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (24577 bytes; the full value is in the source)
expected	38cb940999aca742d69dd79298c6051c

Vector 20 — KangarooTwelve: 166-byte pattern (domain separator meets pad10*1)

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f 404142434445464748494a4b4c4d4e4f 505152535455565758595a5b5c5d5e5f 606162636465666768696a6b6c6d6e6f 707172737475767778797a7b7c7d7e7f 808182838485868788898a8b8c8d8e8f 909192939495969798999a9b9c9d9e9f a0a1a2a3a4a5
expected	cbbe9dd1e423f20003fba7bb219491c8d1f445fa5c4199d6c6c70c9fdc101964

Vector 21 — KangarooTwelve: 334-byte pattern (domain separator meets pad10*1, second block)

Field	Value
outputSize	32
input	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f … (334 bytes; the full value is in the source)
expected	ff92c42fdbdcb983d402fdc05f7d6edd1ae0a24aadd145cf129c8e7e7c057b3b

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