Hawkynt

BubbleBabble Encoding

Binary-to-text encoding scheme that produces pronounceable words, commonly used for SSH fingerprints. Creates human-readable representations of binary data using consonant-vowel patterns and an embedded checksum, per Antti Huima’s draft-huima-01 specification. Encodes any byte sequence of any length - there is no restricted input domain.

Properties

Property	Value
Category	Encoding Schemes
Sub-category	Fingerprint Encoding
Security status	🎓 Educational Only
Complexity	Intermediate
Inventor	Antti Huima
Year	2000
Origin	Not specified
Source	`algorithms/encoding/bubblebabble.js`

Security

Status: 🎓 Educational Only

No vulnerabilities are recorded for this implementation.

Documentation

References

Test vectors

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

Vector 1 — BubbleBabble empty data test (spec section 5)

Field	Value
`input`	(empty)
`expected`	`7865786178`

Vector 2 — BubbleBabble ‘1234567890’ test (spec section 5)

Field	Value
`input`	`31323334353637383930`
`expected`	`78657365662d6469736f662d67797475 662d6b61746f662d6d6f7669662d6261 787578`

Vector 3 — BubbleBabble ‘Pineapple’ test (spec section 5)

Field	Value
`input`	`50696e656170706c65`
`expected`	`786967616b2d6e7972796b2d68756d696c2d626f73656b2d736f6e6178`

Vector 4 — Single byte encoding test - BubbleBabble

Field	Value
`input`	`41`
`expected`	`7869626578`

Vector 5 — Even-length two-byte test with 0x00/0xFF - exercises the even-K capstone-tuple path

Field	Value
`input`	`00ff`
`expected`	`786562617a2d7a69786578`

Vector 6 — All 256 byte values regression test (128 full tuples) - exercises the checksum chain and every consonant/vowel index

Field Value

input 000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f 404142434445464748494a4b4c4d4e4f 505152535455565758595a5b5c5d5e5f 606162636465666768696a6b6c6d6e6f 707172737475767778797a7b7c7d7e7f 808182838485868788898a8b8c8d8e8f 909192939495969798999a9b9c9d9e9f a0a1a2a3a4a5a6a7a8a9aaabacadaeaf b0b1b2b3b4b5b6b7b8b9babbbcbdbebf c0c1c2c3c4c5c6c7c8c9cacbcccdcecf d0d1d2d3d4d5d6d7d8d9dadbdcdddedf e0e1e2e3e4e5e6e7e8e9eaebecedeeef f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff

expected 78656261622d6361626f622d66796365 622d68756375622d6c6f646f622d6e69 6461622d72656679622d74616669622d 7a796761632d6375676f632d666f6869 … (773 bytes; the full value is in the source)

Field	Value
`input`	000102030405060708090a0b0c0d0e0f 101112131415161718191a1b1c1d1e1f 202122232425262728292a2b2c2d2e2f 303132333435363738393a3b3c3d3e3f 404142434445464748494a4b4c4d4e4f 505152535455565758595a5b5c5d5e5f 606162636465666768696a6b6c6d6e6f 707172737475767778797a7b7c7d7e7f 808182838485868788898a8b8c8d8e8f 909192939495969798999a9b9c9d9e9f a0a1a2a3a4a5a6a7a8a9aaabacadaeaf b0b1b2b3b4b5b6b7b8b9babbbcbdbebf c0c1c2c3c4c5c6c7c8c9cacbcccdcecf d0d1d2d3d4d5d6d7d8d9dadbdcdddedf e0e1e2e3e4e5e6e7e8e9eaebecedeeef f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff
`expected`	`78656261622d6361626f622d66796365 622d68756375622d6c6f646f622d6e69 6461622d72656679622d74616669622d 7a796761632d6375676f632d666f6869 …` (773 bytes; the full value is in the source)

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