Sample
bcryptjs 3.0.3: Handle bcryptjs parameter asymmetries in hash salt defaults, genSalt rounds clamping, selective 60-character error throwing in compare, and non-standard Base64 decoding
Verified sample for npm bcryptjs 3.0.3: Handle bcryptjs parameter asymmetries in hash salt defaults, genSalt rounds clamping, selective 60-character error…
sha256:728973545e45ca5700dadbdcde59e4ceb0c9e7cf083c2ca5d448fde147d2bfd9
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
node linux x64 node node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-16 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
Case
HOW- Goal
- Handle bcryptjs parameter asymmetries in hash salt defaults, genSalt rounds clamping, selective 60-character error throwing in compare, and non-standard Base64 decoding
- Packages
- Symbols
-
- bcryptjs.compareSync
- bcryptjs.compare
- bcryptjs.hashSync
- bcryptjs.hash
- bcryptjs.genSaltSync
- bcryptjs.genSalt
- bcryptjs.getRounds
- bcryptjs.getSalt
- bcryptjs.truncates
- bcryptjs.encodeBase64
- bcryptjs.decodeBase64
- Environment
- node
- Created
- 2026-08-16T06:23:33Z
Contract
- assert hashSync permits omitting salt to default to 10 rounds while async hash rejects with 'Illegal arguments: string, undefined' unless salt or rounds is explicitly passed
- assert genSaltSync(0) evaluates 0 || 10 and silently produces a 10-round salt ($2b$10$) rather than 0 or minimum rounds
- assert genSaltSync clamps rounds 1..3 to 4 ($2b$04$) and rounds 32+ to 31 ($2b$31$), and that passing numeric string '10' throws rather than converting
- assert compareSync and compare return false on non-matching strings whose length is not 60, but throw/reject with 'Invalid salt version' on 60-character non-bcrypt strings
- assert compareSync throws on non-string inputs and throws 'Invalid salt revision' on 60-character strings starting with unsupported revision $2x$
- assert getRounds returns NaN without throwing on empty or malformed strings while getSalt strictly enforces length 60 and extracts 29 characters without syntax validation
- assert encodeBase64 and decodeBase64 use bcrypt's custom alphabet where 0x00 is '.' rather than 'A', causing standard RFC 4648 Base64 'AAAA' to decode to [8, 32, 130]
- assert $2a$, $2b$, and $2y$ produce 60-character hashes that verify with compareSync, while legacy $2$ produces a 59-character hash that always fails compareSync and throws in getSalt
- assert truncates measures UTF-8 byte length with boundary at 72 bytes (36 vs 37 multi-byte characters) and throws on non-string inputs
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/bcrypt_api.mjs
- test/contract.mjs