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zeekay
165ae41805
This commit lands the first end-to-end signable surface:
* pkg/sign — Signer/Verifier interfaces, Ed25519 implementation
(stdlib crypto/ed25519), method-dispatch helper. 8 unit tests:
round-trip, deterministic-from-seed, bad-seed-length, tampered
payload + sig, bad pubkey, bad sig length, zero-value verifier.
* pkg/envelope — added Signature.SignerHashHex() and SeqString
helper used by the verifier-side error reporting.
* pkg/api — Handler with pluggable Store, in-memory MemStore for
tests + small deployments. CreateRequest / SignRequest /
TransitionRequest / VerifyResponse types form the wire surface.
Handler.Sign runs cryptographic verify BEFORE calling
envelope.AddSignature so a malformed sig never lands in the
envelope. 3 e2e tests cover happy path, sig tampering detection,
and crypto-fails-before-store ordering.
* pkg/api — opcode table (Create/Get/Sign/Transition/Verify/Audit
+ Ping). ZAPServer serves [4B BE length][2B LE opcode][JSON body]
framing with per-conn pipelining + idle timeout. Tests: ping,
end-to-end create→sent→sign→verify, unknown opcode error,
bad-JSON error.
* cmd/esignd — standalone daemon. `--zap :9650` by default.
SIGINT/SIGTERM shutdown drains inflight conns before exit.
Test summary: 3 packages, 22 tests, all green.
18 lines
629 B
Go
18 lines
629 B
Go
// Copyright 2026 Lux Industries Inc. and the luxfi/esign authors.
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// Licensed under the Apache License, Version 2.0 (see LICENSE).
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package envelope
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import (
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"encoding/hex"
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"strconv"
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)
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// SignerHashHex returns the lowercase hex form of the signer hash.
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// Convenience for log/audit-record output where 64 chars beats 32 raw bytes.
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func (s Signature) SignerHashHex() string { return hex.EncodeToString(s.SignerHash[:]) }
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// SeqString renders an audit-event sequence number as decimal string.
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// Wrapper around strconv.Itoa so callers don't need a separate import.
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func SeqString(seq int) string { return strconv.Itoa(seq) }
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