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agent402.tools Scrypt Key Derivation
x402
agent402.tools Scrypt Key Derivation is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Derives a cryptographic key from a password using the memory-hard scrypt algorithm (RFC 7914), returning the hex-encoded derived key and all tuning parameters.
Price / call$0.001
Success—
StatusUnknown
How this service works
Derive a cryptographic key from a password using scrypt (RFC 7914). Memory-hard by design, making it more resistant to GPU/ASIC brute-force than PBKDF2. Returns the hex-encoded derived key and all tuning parameters (N, r, p).
Output
Returns the hex-encoded derived key along with the tuning parameters used (N, r, p) and the key length, confirming exactly how the derivation was performed.
Example use cases
Example prompt
“Run scrypt key derivation on the password 'correct-horse-battery-staple' with salt 'unique-user-salt-2024', using cost factor N=16384, block size r=8, parallelization p=1, and give me a 64-byte hex key.”
Technical details
Endpoint
POSThttps://agent402.tools/api/scrypt-deriveWhen to prefer
Prefer this endpoint when you need memory-hard password hashing or key derivation that is more resistant to GPU/ASIC attacks than PBKDF2 or bcrypt. Ideal for deriving encryption keys from passphrases, storing password verifiers, or any use case requiring RFC 7914 scrypt compliance with configurable N, r, p parameters.
Side effects
- N is not a power of 2 or exceeds 131072 — returns validation error
- keyLength exceeds 128 bytes — returns validation error
- Missing required password or salt fields — returns 400 bad request
- N×r×p product too large for available memory — returns computation error
- Payment failure via x402 protocol — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cost | integer | CPU/memory cost parameter N (default 16384, max 131072, must be power of 2) |
| salt | string | Salt string (should be unique per password) |
| password | string | Password or passphrase to derive from |
| blockSize | integer | Block size parameter r (default 8) |
| keyLength | integer | Desired key length in bytes (default 64, max 128) |
| parallelization | integer | Parallelization parameter p (default 1) |
Output
Schema · Response
{
"type": "json",
"example": {
"cost": 16384,
"saltUsed": "random-salt-value",
"algorithm": "scrypt",
"blockSize": 8,
"keyLength": 64,
"derivedKey": "a1b2c3d4e5f6...",
"parallelization": 1
}
}Tags
x402
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