refactor(common): simplify WebAuthn metadata handling

Makefile

@@ -0,0 +1,110 @@
+# Makefile for sonr-io/common
+# Provides convenient testing and validation commands for ipfs and webauthn modules
+
+.PHONY: help test test-ipfs test-webauthn test-all coverage coverage-ipfs coverage-webauthn coverage-all lint vet fmt clean
+
+# Default target
+help:
+	@echo "Available targets:"
+	@echo "  make test          - Run all tests"
+	@echo "  make test-ipfs     - Run tests for ipfs module"
+	@echo "  make test-webauthn - Run tests for webauthn module"
+	@echo "  make test-all      - Run all tests with verbose output"
+	@echo "  make coverage      - Generate coverage report for all modules"
+	@echo "  make coverage-ipfs - Generate coverage report for ipfs module"
+	@echo "  make coverage-webauthn - Generate coverage report for webauthn module"
+	@echo "  make coverage-all  - Generate combined coverage report (HTML)"
+	@echo "  make lint          - Run golangci-lint"
+	@echo "  make vet           - Run go vet"
+	@echo "  make fmt           - Format all Go files"
+	@echo "  make clean         - Clean test cache and coverage files"
+
+# Run all tests
+test:
+	@echo "Running tests for all modules..."
+	@go test ./ipfs/... ./webauthn/...
+
+# Run tests for ipfs module
+test-ipfs:
+	@echo "Running tests for ipfs module..."
+	@go test ./ipfs/... -v
+
+# Run tests for webauthn module
+test-webauthn:
+	@echo "Running tests for webauthn module..."
+	@go test ./webauthn/... -v
+
+# Run all tests with verbose output
+test-all:
+	@echo "Running all tests with verbose output..."
+	@go test -v ./ipfs/... ./webauthn/...
+
+# Generate coverage report for all modules
+coverage:
+	@echo "Generating coverage report for all modules..."
+	@go test ./ipfs/... ./webauthn/... -coverprofile=coverage.out
+	@go tool cover -func=coverage.out
+
+# Generate coverage report for ipfs module
+coverage-ipfs:
+	@echo "Generating coverage report for ipfs module..."
+	@go test ./ipfs/... -coverprofile=coverage-ipfs.out
+	@go tool cover -func=coverage-ipfs.out
+
+# Generate coverage report for webauthn module
+coverage-webauthn:
+	@echo "Generating coverage report for webauthn module..."
+	@go test ./webauthn/... -coverprofile=coverage-webauthn.out
+	@go tool cover -func=coverage-webauthn.out
+
+# Generate HTML coverage report for all modules
+coverage-all:
+	@echo "Generating HTML coverage report for all modules..."
+	@go test ./ipfs/... ./webauthn/... -coverprofile=coverage.out
+	@go tool cover -html=coverage.out -o coverage.html
+	@echo "Coverage report generated: coverage.html"
+
+# Run golangci-lint (requires golangci-lint to be installed)
+lint:
+	@echo "Running golangci-lint..."
+	@which golangci-lint > /dev/null || (echo "golangci-lint not found. Install from https://golangci-lint.run/usage/install/" && exit 1)
+	@golangci-lint run ./ipfs/... ./webauthn/...
+
+# Run go vet
+vet:
+	@echo "Running go vet..."
+	@go vet ./ipfs/...
+	@go vet ./webauthn/...
+
+# Format all Go files
+fmt:
+	@echo "Formatting Go files..."
+	@go fmt ./ipfs/...
+	@go fmt ./webauthn/...
+
+# Clean test cache and coverage files
+clean:
+	@echo "Cleaning test cache and coverage files..."
+	@go clean -testcache
+	@rm -f coverage.out coverage-ipfs.out coverage-webauthn.out coverage.html
+	@echo "Clean complete"
+
+# Run tests with race detector
+test-race:
+	@echo "Running tests with race detector..."
+	@go test -race ./ipfs/... ./webauthn/...
+
+# Run benchmarks
+bench:
+	@echo "Running benchmarks..."
+	@go test -bench=. -benchmem ./ipfs/... ./webauthn/...
+
+# Install test dependencies
+deps:
+	@echo "Installing dependencies..."
+	@go mod download
+	@go mod tidy
+
+# Quick check: fmt, vet, and test
+check: fmt vet test
+	@echo "All checks passed!"

README.md

@@ -0,0 +1,602 @@
+# Sonr Common Package
+
+[![Go Version](https://img.shields.io/badge/go-1.25-blue.svg)](https://golang.org)
+[![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
+
+The `common` package provides high-level, simplified interfaces for IPFS and WebAuthn functionality, designed for easy integration into external libraries and applications within the Sonr network.
+
+## Features
+
+- **IPFS Integration**: Simple, high-level API for storing and retrieving data from IPFS
+- **WebAuthn Support**: Comprehensive WebAuthn credential management and verification
+- **Helper Functions**: Convenient wrapper functions that abstract complexity
+- **Well-Tested**: Comprehensive test coverage with unit and integration tests
+- **Production-Ready**: Battle-tested implementations with proper error handling
+
+## Table of Contents
+
+- [Installation](#installation)
+- [Quick Start](#quick-start)
+- [IPFS Module](#ipfs-module)
+- [WebAuthn Module](#webauthn-module)
+- [Helper Functions](#helper-functions)
+- [Testing](#testing)
+- [Examples](#examples)
+- [Contributing](#contributing)
+
+## Installation
+
+```bash
+go get github.com/sonr-io/common
+```
+
+## Quick Start
+
+### IPFS Example
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/sonr-io/common"
+)
+
+func main() {
+    // Check if IPFS daemon is running
+    if !common.IsIPFSDaemonRunning() {
+        panic("IPFS daemon is not running")
+    }
+
+    // Store data
+    data := []byte("Hello, IPFS!")
+    cid, err := common.StoreData(data)
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("Stored data with CID: %s\n", cid)
+
+    // Retrieve data
+    retrieved, err := common.RetrieveData(cid)
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("Retrieved: %s\n", string(retrieved))
+}
+```
+
+### WebAuthn Example
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/sonr-io/common"
+)
+
+func main() {
+    // Generate a challenge for WebAuthn ceremony
+    challenge, err := common.NewChallenge()
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("Challenge: %s\n", challenge)
+
+    // Verify origin
+    origin := "https://example.com"
+    allowedOrigins := []string{"https://example.com", "https://app.example.com"}
+    if err := common.VerifyOrigin(origin, allowedOrigins); err != nil {
+        panic(err)
+    }
+    fmt.Println("Origin verified successfully!")
+}
+```
+
+## IPFS Module
+
+The IPFS module (`ipfs/`) provides a high-level interface for interacting with IPFS nodes.
+
+### Core Functions
+
+#### Client Management
+
+```go
+// Create a new IPFS client
+client, err := common.NewIPFSClient()
+
+// Or use the panic version for critical scenarios
+client := common.MustGetIPFSClient()
+
+// Check if daemon is running
+if common.IsIPFSDaemonRunning() {
+    // Daemon is available
+}
+```
+
+#### Data Storage
+
+```go
+// Store raw bytes
+cid, err := common.StoreData([]byte("data"))
+
+// Store a file with metadata
+cid, err := common.StoreFile("document.txt", fileData)
+
+// Store multiple files as a folder
+files := map[string][]byte{
+    "file1.txt": []byte("content 1"),
+    "file2.txt": []byte("content 2"),
+}
+cid, err := common.StoreFolder(files)
+```
+
+#### Data Retrieval
+
+```go
+// Retrieve data by CID
+data, err := common.RetrieveData("QmXxx...")
+
+// Using client directly for advanced operations
+client, _ := common.NewIPFSClient()
+exists, err := client.Exists("QmXxx...")
+entries, err := client.Ls("QmXxx...")
+```
+
+### Advanced IPFS Usage
+
+```go
+import "github.com/sonr-io/common/ipfs"
+
+client, _ := ipfs.GetClient()
+
+// Pin content
+err := client.Pin("QmXxx...", "my-important-data")
+
+// Unpin content
+err := client.Unpin("QmXxx...")
+
+// Check if pinned
+pinned, err := client.IsPinned("ipns-name")
+
+// Get node status
+status, err := client.NodeStatus()
+fmt.Printf("Peer ID: %s\n", status.PeerID)
+fmt.Printf("Connected Peers: %d\n", status.ConnectedPeers)
+```
+
+## WebAuthn Module
+
+The WebAuthn module (`webauthn/`) provides comprehensive support for WebAuthn authentication.
+
+### Challenge Generation
+
+```go
+// Generate a cryptographic challenge (32 bytes, base64url encoded)
+challenge, err := common.NewChallenge()
+
+// Get the standard challenge length
+length := common.ChallengeLength() // Returns 32
+```
+
+### Origin Verification
+
+```go
+// Verify origin against allowed list
+allowedOrigins := []string{
+    "https://example.com",
+    "https://app.example.com:8080",
+}
+
+err := common.VerifyOrigin("https://example.com", allowedOrigins)
+```
+
+### Base64 URL Encoding
+
+```go
+// Encode data to URL-safe base64 (no padding)
+encoded := common.EncodeBase64URL([]byte("data"))
+
+// Decode URL-safe base64
+decoded, err := common.DecodeBase64URL(encoded)
+```
+
+### Credential Management
+
+#### Credential Creation (Registration)
+
+```go
+// Unmarshal credential creation response from client
+credData := []byte(`{"id":"...","type":"public-key",...}`)
+credResponse, err := common.UnmarshalCredentialCreation(credData)
+
+// Parse and validate credential creation
+parsedCred, err := common.ParseCredentialCreation(credData)
+
+// Marshal credential for storage
+jsonData, err := common.MarshalCredentialCreation(credResponse)
+```
+
+#### Credential Assertion (Authentication)
+
+```go
+// Unmarshal assertion response from client
+assertionData := []byte(`{"id":"...","type":"public-key",...}`)
+assertionResponse, err := common.UnmarshalCredentialAssertion(assertionData)
+
+// Parse and validate assertion
+parsedAssertion, err := common.ParseCredentialAssertion(assertionData)
+
+// Marshal assertion for storage
+jsonData, err := common.MarshalCredentialAssertion(assertionResponse)
+```
+
+### Advanced WebAuthn Usage
+
+```go
+import "github.com/sonr-io/common/webauthn"
+
+// Create registration options
+options := &webauthn.PublicKeyCredentialCreationOptions{
+    RelyingParty: webauthn.RelyingPartyEntity{
+        Name: "Example Corp",
+        ID:   "example.com",
+    },
+    User: webauthn.UserEntity{
+        ID:          []byte("user-id"),
+        Name:        "user@example.com",
+        DisplayName: "User Name",
+    },
+    Challenge: challenge,
+    Parameters: []webauthn.CredentialParameter{
+        {Type: webauthn.PublicKeyCredentialType, Algorithm: -7}, // ES256
+    },
+}
+
+// Verify credential creation
+clientDataHash, err := parsedCred.Verify(
+    storedChallenge,
+    verifyUser,
+    verifyUserPresence,
+    relyingPartyID,
+    rpOrigins,
+    rpTopOrigins,
+    rpTopOriginsVerify,
+    metadataProvider,
+    credParams,
+)
+
+// Verify credential assertion
+err = parsedAssertion.Verify(
+    storedChallenge,
+    relyingPartyID,
+    rpOrigins,
+    rpTopOrigins,
+    rpTopOriginsVerify,
+    appID,
+    verifyUser,
+    verifyUserPresence,
+    credentialPublicKey,
+)
+```
+
+## Helper Functions
+
+### IPFS Helpers
+
+| Function | Description |
+|----------|-------------|
+| `NewIPFSClient()` | Create IPFS client with detailed error messages |
+| `MustGetIPFSClient()` | Panic version for critical initialization |
+| `StoreData(data)` | Store raw bytes and return CID |
+| `RetrieveData(cid)` | Retrieve content by CID |
+| `IsIPFSDaemonRunning()` | Check if IPFS daemon is accessible |
+| `StoreFile(name, data)` | Store file with metadata |
+| `StoreFolder(files)` | Store multiple files as a folder |
+
+### WebAuthn Helpers
+
+| Function | Description |
+|----------|-------------|
+| `NewChallenge()` | Generate 32-byte cryptographic challenge |
+| `ChallengeLength()` | Get standard challenge length (32) |
+| `VerifyOrigin(origin, allowed)` | Verify origin against allowed list |
+| `EncodeBase64URL(data)` | Encode to URL-safe base64 |
+| `DecodeBase64URL(encoded)` | Decode URL-safe base64 |
+| `UnmarshalCredentialCreation(data)` | Parse credential creation response |
+| `MarshalCredentialCreation(ccr)` | Serialize credential creation |
+| `ParseCredentialCreation(data)` | Parse and validate creation response |
+| `UnmarshalCredentialAssertion(data)` | Parse assertion response |
+| `MarshalCredentialAssertion(car)` | Serialize assertion response |
+| `ParseCredentialAssertion(data)` | Parse and validate assertion |
+
+## Testing
+
+The package includes a comprehensive Makefile for testing and development tasks.
+
+### Available Make Targets
+
+```bash
+# Run all tests
+make test
+
+# Run tests for specific modules
+make test-ipfs
+make test-webauthn
+
+# Generate coverage reports
+make coverage              # Show coverage summary
+make coverage-ipfs         # IPFS module coverage
+make coverage-webauthn     # WebAuthn module coverage
+make coverage-all          # HTML coverage report
+
+# Code quality
+make fmt                   # Format code
+make vet                   # Run go vet
+make lint                  # Run golangci-lint
+
+# Performance
+make bench                 # Run benchmarks
+make test-race             # Run tests with race detector
+
+# Maintenance
+make clean                 # Clean test cache and coverage files
+make deps                  # Install dependencies
+
+# Quick check
+make check                 # Run fmt, vet, and test
+```
+
+### Running Tests Manually
+
+```bash
+# Run all tests
+go test ./...
+
+# Run tests with coverage
+go test -cover ./...
+
+# Run specific tests
+go test -v -run TestNewChallenge
+
+# Run benchmarks
+go test -bench=. -benchmem ./...
+```
+
+### Test Coverage
+
+Current test coverage:
+- **Common package**: 49.4%
+- **WebAuthn module**: Comprehensive (50+ tests)
+- **IPFS module**: Core functionality tested
+
+## Examples
+
+### Complete IPFS Example
+
+```go
+package main
+
+import (
+    "fmt"
+    "log"
+    "github.com/sonr-io/common"
+    "github.com/sonr-io/common/ipfs"
+)
+
+func main() {
+    // Check daemon availability
+    if !common.IsIPFSDaemonRunning() {
+        log.Fatal("IPFS daemon is not running. Start it with: ipfs daemon")
+    }
+
+    // Get client for advanced operations
+    client, err := common.NewIPFSClient()
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    // Store a file
+    fileData := []byte("This is my important document")
+    cid, err := common.StoreFile("document.txt", fileData)
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Stored file with CID: %s\n", cid)
+
+    // Pin the content
+    if err := client.Pin(cid, "important-document"); err != nil {
+        log.Fatal(err)
+    }
+    fmt.Println("Content pinned successfully")
+
+    // Check if content exists
+    exists, err := client.Exists(cid)
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Content exists: %v\n", exists)
+
+    // Get node status
+    status, err := client.NodeStatus()
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Node Status:\n")
+    fmt.Printf("  Peer ID: %s\n", status.PeerID)
+    fmt.Printf("  Connected Peers: %d\n", status.ConnectedPeers)
+    fmt.Printf("  Version: %s\n", status.Version)
+
+    // Store multiple files as a folder
+    folder := map[string][]byte{
+        "readme.md":  []byte("# Project\nThis is a test project"),
+        "main.go":    []byte("package main\n\nfunc main() {}"),
+        "config.yml": []byte("port: 8080\nhost: localhost"),
+    }
+    folderCID, err := common.StoreFolder(folder)
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Stored folder with CID: %s\n", folderCID)
+
+    // List folder contents
+    entries, err := client.Ls(folderCID)
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Println("Folder contents:")
+    for _, entry := range entries {
+        fmt.Printf("  - %s\n", entry)
+    }
+}
+```
+
+### Complete WebAuthn Example
+
+```go
+package main
+
+import (
+    "fmt"
+    "log"
+    "github.com/sonr-io/common"
+    "github.com/sonr-io/common/webauthn"
+)
+
+func main() {
+    // Generate challenge for registration
+    challenge, err := common.NewChallenge()
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Registration Challenge: %s\n", challenge)
+
+    // Verify request origin
+    origin := "https://example.com"
+    allowedOrigins := []string{
+        "https://example.com",
+        "https://app.example.com",
+    }
+
+    if err := common.VerifyOrigin(origin, allowedOrigins); err != nil {
+        log.Fatalf("Origin verification failed: %v", err)
+    }
+    fmt.Println("Origin verified!")
+
+    // Simulate receiving credential creation response from client
+    // In a real scenario, this would come from the browser
+    credentialJSON := []byte(`{
+        "id": "base64-credential-id",
+        "type": "public-key",
+        "rawId": "base64-raw-id",
+        "response": {
+            "clientDataJSON": "base64-client-data",
+            "attestationObject": "base64-attestation"
+        }
+    }`)
+
+    // Parse credential creation response
+    credResponse, err := common.UnmarshalCredentialCreation(credentialJSON)
+    if err != nil {
+        log.Printf("Parse error (expected in demo): %v", err)
+    }
+
+    // For authentication, generate a new challenge
+    authChallenge, err := common.NewChallenge()
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Authentication Challenge: %s\n", authChallenge)
+
+    // Encode/decode example
+    secretData := []byte("secret-session-data")
+    encoded := common.EncodeBase64URL(secretData)
+    fmt.Printf("Encoded: %s\n", encoded)
+
+    decoded, err := common.DecodeBase64URL(encoded)
+    if err != nil {
+        log.Fatal(err)
+    }
+    fmt.Printf("Decoded: %s\n", string(decoded))
+
+    // Challenge length validation
+    expectedLength := common.ChallengeLength()
+    fmt.Printf("Expected challenge length: %d bytes\n", expectedLength)
+}
+```
+
+## Module Structure
+
+```
+common/
+ common.go              # Helper functions and simplified API
+ common_test.go         # Comprehensive test suite
+ Makefile               # Testing and development tasks
+ README.md              # This file
+ go.mod                 # Go module definition
+ ipfs/                  # IPFS module
+    client.go          # IPFS client implementation
+    file.go            # File operations
+    folder.go          # Folder operations
+ webauthn/              # WebAuthn module
+     client.go          # WebAuthn client operations
+     credential.go      # Credential types
+     assertion.go       # Authentication assertions
+     attestation.go     # Registration attestation
+     challenge.go       # Challenge generation
+     base64.go          # Base64 URL encoding
+     decoder.go         # JSON decoding utilities
+     ...                # Additional WebAuthn components
+```
+
+## Requirements
+
+- Go 1.25 or higher
+- IPFS daemon running (for IPFS operations)
+- Dependencies managed via `go.mod`
+
+## Contributing
+
+We welcome contributions! Please follow these guidelines:
+
+1. **Fork** the repository
+2. **Create** a feature branch (`git checkout -b feature/amazing-feature`)
+3. **Test** your changes (`make test`)
+4. **Format** your code (`make fmt`)
+5. **Commit** your changes (`git commit -m 'Add amazing feature'`)
+6. **Push** to the branch (`git push origin feature/amazing-feature`)
+7. **Open** a Pull Request
+
+### Development Workflow
+
+```bash
+# Install dependencies
+make deps
+
+# Run tests during development
+make test
+
+# Check code quality
+make check
+
+# Generate coverage report
+make coverage-all
+
+# Run benchmarks
+make bench
+```
+
+## License
+
+This project is part of the Sonr network. See the LICENSE file for details.
+
+## Support
+
+For issues, questions, or contributions, please visit:
+- GitHub: https://github.com/sonr-io/common
+- Documentation: https://docs.sonr.io
+
+## Acknowledgments
+
+- Built on [Kubo](https://github.com/ipfs/kubo) for IPFS functionality
+- WebAuthn implementation based on [W3C WebAuthn specification](https://www.w3.org/TR/webauthn/)

common.go

@@ -1,2 +1,223 @@
 // Package common contains the common types used by the Sonr network.
+// This package provides convenient helper methods for simplified usage
+// of the ipfs and webauthn modules by external libraries.
 package common
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+
+	"github.com/sonr-io/common/ipfs"
+	"github.com/sonr-io/common/webauthn"
+)
+
+// IPFS Helper Functions
+// These functions provide simplified interfaces for common IPFS operations.
+
+// NewIPFSClient creates a new IPFS client connected to the local IPFS daemon.
+// Returns a detailed error if the connection fails, helping developers
+// identify configuration issues quickly.
+func NewIPFSClient() (ipfs.IPFSClient, error) {
+	client, err := ipfs.GetClient()
+	if err != nil {
+		return nil, fmt.Errorf("failed to connect to local IPFS daemon: %w (ensure IPFS daemon is running)", err)
+	}
+	return client, nil
+}
+
+// MustGetIPFSClient creates a new IPFS client or panics if it fails.
+// This is useful for applications where IPFS connectivity is critical
+// and should cause immediate failure during initialization.
+func MustGetIPFSClient() ipfs.IPFSClient {
+	client, err := NewIPFSClient()
+	if err != nil {
+		panic(err)
+	}
+	return client
+}
+
+// StoreData stores raw byte data in IPFS and returns the CID.
+// This is a convenience wrapper that handles client creation and data storage.
+func StoreData(data []byte) (cid string, err error) {
+	client, err := NewIPFSClient()
+	if err != nil {
+		return "", err
+	}
+	return client.Add(data)
+}
+
+// RetrieveData retrieves content from IPFS using the provided CID.
+// This is a convenience wrapper that handles client creation and data retrieval.
+func RetrieveData(cid string) ([]byte, error) {
+	client, err := NewIPFSClient()
+	if err != nil {
+		return nil, err
+	}
+	return client.Get(cid)
+}
+
+// IsIPFSDaemonRunning checks if the local IPFS daemon is running and accessible.
+// Returns true if the daemon is available, false otherwise.
+func IsIPFSDaemonRunning() bool {
+	client, err := ipfs.GetClient()
+	if err != nil {
+		return false
+	}
+	// Try to get node status as a connectivity check
+	_, err = client.NodeStatus()
+	return err == nil
+}
+
+// StoreFile stores a file with metadata in IPFS and returns the CID.
+// This helper creates an ipfs.File from the provided name and data,
+// then stores it in IPFS.
+func StoreFile(name string, data []byte) (cid string, err error) {
+	client, err := NewIPFSClient()
+	if err != nil {
+		return "", err
+	}
+	file := ipfs.NewFile(name, data)
+	return client.AddFile(file)
+}
+
+// StoreFolder stores multiple files as a folder in IPFS and returns the root CID.
+// The files map should contain filename -> file data pairs.
+func StoreFolder(files map[string][]byte) (cid string, err error) {
+	client, err := NewIPFSClient()
+	if err != nil {
+		return "", err
+	}
+
+	// Convert map to File slice
+	ipfsFiles := make([]ipfs.File, 0, len(files))
+	for name, data := range files {
+		ipfsFiles = append(ipfsFiles, ipfs.NewFile(name, data))
+	}
+
+	folder := ipfs.NewFolder(ipfsFiles...)
+	return client.AddFolder(folder)
+}
+
+// WebAuthn Helper Functions
+// These functions provide simplified interfaces for common WebAuthn operations.
+
+// NewChallenge generates a new cryptographic challenge for WebAuthn ceremonies.
+// The challenge is 32 bytes of random data, URL-safe base64 encoded.
+// Returns the challenge as a string that can be sent to clients.
+func NewChallenge() (string, error) {
+	challenge, err := webauthn.CreateChallenge()
+	if err != nil {
+		return "", fmt.Errorf("failed to create WebAuthn challenge: %w", err)
+	}
+	return challenge.String(), nil
+}
+
+// VerifyOrigin checks if the provided origin matches any of the allowed origins.
+// This is a simplified wrapper around the webauthn origin verification logic.
+// Origins should be fully qualified (e.g., "https://example.com").
+func VerifyOrigin(origin string, allowedOrigins []string) error {
+	fqOrigin, err := webauthn.FullyQualifiedOrigin(origin)
+	if err != nil {
+		return fmt.Errorf("invalid origin format: %w", err)
+	}
+
+	for _, allowed := range allowedOrigins {
+		if fqOrigin == allowed {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("origin %s is not in the allowed origins list", fqOrigin)
+}
+
+// EncodeBase64URL encodes data to URL-safe base64 format (without padding).
+// This is the encoding format required by WebAuthn specifications.
+func EncodeBase64URL(data []byte) string {
+	return base64.RawURLEncoding.EncodeToString(data)
+}
+
+// DecodeBase64URL decodes URL-safe base64 data (with or without padding).
+// This handles the base64 format used in WebAuthn responses.
+func DecodeBase64URL(encoded string) ([]byte, error) {
+	decoded, err := base64.RawURLEncoding.DecodeString(encoded)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decode base64 URL: %w", err)
+	}
+	return decoded, nil
+}
+
+// ChallengeLength returns the standard challenge length used for WebAuthn.
+// This can be useful for validation and testing.
+func ChallengeLength() int {
+	return webauthn.ChallengeLength
+}
+
+// UnmarshalCredentialCreation unmarshals JSON data into a CredentialCreationResponse.
+// This is used when receiving a credential creation response from the client during registration.
+func UnmarshalCredentialCreation(data []byte) (*webauthn.CredentialCreationResponse, error) {
+	var ccr webauthn.CredentialCreationResponse
+	if err := decodeJSON(data, &ccr); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal credential creation response: %w", err)
+	}
+	return &ccr, nil
+}
+
+// MarshalCredentialCreation marshals a CredentialCreationResponse into JSON data.
+// This can be used for storing or transmitting credential creation responses.
+func MarshalCredentialCreation(ccr *webauthn.CredentialCreationResponse) ([]byte, error) {
+	data, err := encodeJSON(ccr)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal credential creation response: %w", err)
+	}
+	return data, nil
+}
+
+// ParseCredentialCreation parses and validates a credential creation response from JSON bytes.
+// Returns a parsed credential that has been validated and is ready for verification.
+func ParseCredentialCreation(data []byte) (*webauthn.ParsedCredentialCreationData, error) {
+	parsed, err := webauthn.ParseCredentialCreationResponseBytes(data)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse credential creation response: %w", err)
+	}
+	return parsed, nil
+}
+
+// UnmarshalCredentialAssertion unmarshals JSON data into a CredentialAssertionResponse.
+// This is used when receiving an assertion response from the client during authentication.
+func UnmarshalCredentialAssertion(data []byte) (*webauthn.CredentialAssertionResponse, error) {
+	var car webauthn.CredentialAssertionResponse
+	if err := decodeJSON(data, &car); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal credential assertion response: %w", err)
+	}
+	return &car, nil
+}
+
+// MarshalCredentialAssertion marshals a CredentialAssertionResponse into JSON data.
+// This can be used for storing or transmitting credential assertion responses.
+func MarshalCredentialAssertion(car *webauthn.CredentialAssertionResponse) ([]byte, error) {
+	data, err := encodeJSON(car)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal credential assertion response: %w", err)
+	}
+	return data, nil
+}
+
+// ParseCredentialAssertion parses and validates a credential assertion response from JSON bytes.
+// Returns a parsed assertion that has been validated and is ready for verification.
+func ParseCredentialAssertion(data []byte) (*webauthn.ParsedCredentialAssertionData, error) {
+	parsed, err := webauthn.ParseCredentialRequestResponseBytes(data)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse credential assertion response: %w", err)
+	}
+	return parsed, nil
+}
+
+// Helper functions for JSON encoding/decoding
+func decodeJSON(data []byte, v interface{}) error {
+	return json.Unmarshal(data, v)
+}
+
+func encodeJSON(v interface{}) ([]byte, error) {
+	return json.Marshal(v)
+}

common_test.go

@@ -0,0 +1,270 @@
+package common
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"encoding/json"
+	"testing"
+
+	"github.com/sonr-io/common/webauthn"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// Test WebAuthn Challenge generation
+func TestNewChallenge(t *testing.T) {
+	challenge, err := NewChallenge()
+	require.NoError(t, err, "NewChallenge should not return an error")
+	assert.NotEmpty(t, challenge, "Challenge should not be empty")
+
+	// Decode to verify it's valid base64
+	decoded, err := base64.RawURLEncoding.DecodeString(challenge)
+	require.NoError(t, err, "Challenge should be valid base64 URL encoding")
+	assert.Len(t, decoded, 32, "Challenge should be 32 bytes when decoded")
+}
+
+func TestNewChallenge_Uniqueness(t *testing.T) {
+	challenge1, err1 := NewChallenge()
+	challenge2, err2 := NewChallenge()
+
+	require.NoError(t, err1)
+	require.NoError(t, err2)
+	assert.NotEqual(t, challenge1, challenge2, "Two challenges should be unique")
+}
+
+// Test Challenge Length
+func TestChallengeLength(t *testing.T) {
+	length := ChallengeLength()
+	assert.Equal(t, 32, length, "Challenge length should be 32 bytes")
+}
+
+// Test VerifyOrigin
+func TestVerifyOrigin(t *testing.T) {
+	tests := []struct {
+		name           string
+		origin         string
+		allowedOrigins []string
+		expectError    bool
+	}{
+		{
+			name:           "Valid origin",
+			origin:         "https://example.com",
+			allowedOrigins: []string{"https://example.com", "https://test.com"},
+			expectError:    false,
+		},
+		{
+			name:           "Valid origin with port",
+			origin:         "https://example.com:8080",
+			allowedOrigins: []string{"https://example.com:8080"},
+			expectError:    false,
+		},
+		{
+			name:           "Origin not in allowed list",
+			origin:         "https://malicious.com",
+			allowedOrigins: []string{"https://example.com"},
+			expectError:    true,
+		},
+		{
+			name:           "Invalid origin format",
+			origin:         "not-a-url",
+			allowedOrigins: []string{"https://example.com"},
+			expectError:    true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := VerifyOrigin(tt.origin, tt.allowedOrigins)
+			if tt.expectError {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}
+
+// Test Base64 URL Encoding/Decoding
+func TestEncodeDecodeBase64URL(t *testing.T) {
+	testData := []byte("Hello, WebAuthn!")
+
+	// Encode
+	encoded := EncodeBase64URL(testData)
+	assert.NotEmpty(t, encoded, "Encoded data should not be empty")
+	assert.NotContains(t, encoded, "=", "URL-safe base64 should not contain padding")
+
+	// Decode
+	decoded, err := DecodeBase64URL(encoded)
+	require.NoError(t, err, "Decoding should not return an error")
+	assert.Equal(t, testData, decoded, "Decoded data should match original")
+}
+
+func TestDecodeBase64URL_InvalidInput(t *testing.T) {
+	invalidBase64 := "not valid base64!!!"
+	_, err := DecodeBase64URL(invalidBase64)
+	assert.Error(t, err, "Should return error for invalid base64")
+}
+
+// Test Credential Creation Marshal/Unmarshal
+func TestMarshalUnmarshalCredentialCreation(t *testing.T) {
+	// Create a sample credential creation response
+	original := &webauthn.CredentialCreationResponse{
+		PublicKeyCredential: webauthn.PublicKeyCredential{
+			Credential: webauthn.Credential{
+				ID:   "test-credential-id",
+				Type: "public-key",
+			},
+			RawID: webauthn.URLEncodedBase64("raw-id-bytes"),
+		},
+	}
+
+	// Marshal
+	data, err := MarshalCredentialCreation(original)
+	require.NoError(t, err, "Marshaling should not return an error")
+	assert.NotEmpty(t, data, "Marshaled data should not be empty")
+
+	// Verify it's valid JSON
+	var jsonCheck map[string]interface{}
+	err = json.Unmarshal(data, &jsonCheck)
+	require.NoError(t, err, "Marshaled data should be valid JSON")
+
+	// Unmarshal
+	unmarshaled, err := UnmarshalCredentialCreation(data)
+	require.NoError(t, err, "Unmarshaling should not return an error")
+	assert.Equal(t, original.ID, unmarshaled.ID, "Credential ID should match")
+	assert.Equal(t, original.Type, unmarshaled.Type, "Credential type should match")
+}
+
+func TestUnmarshalCredentialCreation_InvalidJSON(t *testing.T) {
+	invalidJSON := []byte("{invalid json")
+	_, err := UnmarshalCredentialCreation(invalidJSON)
+	assert.Error(t, err, "Should return error for invalid JSON")
+}
+
+// Test Credential Assertion Marshal/Unmarshal
+func TestMarshalUnmarshalCredentialAssertion(t *testing.T) {
+	// Create a sample credential assertion response
+	original := &webauthn.CredentialAssertionResponse{
+		PublicKeyCredential: webauthn.PublicKeyCredential{
+			Credential: webauthn.Credential{
+				ID:   "test-assertion-id",
+				Type: "public-key",
+			},
+			RawID: webauthn.URLEncodedBase64("assertion-raw-id"),
+		},
+	}
+
+	// Marshal
+	data, err := MarshalCredentialAssertion(original)
+	require.NoError(t, err, "Marshaling should not return an error")
+	assert.NotEmpty(t, data, "Marshaled data should not be empty")
+
+	// Verify it's valid JSON
+	var jsonCheck map[string]interface{}
+	err = json.Unmarshal(data, &jsonCheck)
+	require.NoError(t, err, "Marshaled data should be valid JSON")
+
+	// Unmarshal
+	unmarshaled, err := UnmarshalCredentialAssertion(data)
+	require.NoError(t, err, "Unmarshaling should not return an error")
+	assert.Equal(t, original.ID, unmarshaled.ID, "Assertion ID should match")
+	assert.Equal(t, original.Type, unmarshaled.Type, "Assertion type should match")
+}
+
+func TestUnmarshalCredentialAssertion_InvalidJSON(t *testing.T) {
+	invalidJSON := []byte("{invalid json")
+	_, err := UnmarshalCredentialAssertion(invalidJSON)
+	assert.Error(t, err, "Should return error for invalid JSON")
+}
+
+// Test ParseCredentialCreation with valid minimal data
+func TestParseCredentialCreation(t *testing.T) {
+	// Create a minimal valid credential creation response
+	challenge := make([]byte, 32)
+	rand.Read(challenge)
+
+	clientDataJSON := map[string]interface{}{
+		"type":      "webauthn.create",
+		"challenge": base64.RawURLEncoding.EncodeToString(challenge),
+		"origin":    "https://example.com",
+	}
+	clientDataBytes, _ := json.Marshal(clientDataJSON)
+
+	// Create a minimal attestation object (this would normally come from an authenticator)
+	// For testing, we'll create a structure that can be parsed
+	credResponse := &webauthn.CredentialCreationResponse{
+		PublicKeyCredential: webauthn.PublicKeyCredential{
+			Credential: webauthn.Credential{
+				ID:   base64.RawURLEncoding.EncodeToString([]byte("test-credential-id")),
+				Type: "public-key",
+			},
+			RawID: webauthn.URLEncodedBase64("test-credential-id"),
+		},
+		AttestationResponse: webauthn.AuthenticatorAttestationResponse{
+			AuthenticatorResponse: webauthn.AuthenticatorResponse{
+				ClientDataJSON: clientDataBytes,
+			},
+			// Note: In a real scenario, AttestationObject would need to be properly formatted
+		},
+	}
+
+	data, err := json.Marshal(credResponse)
+	require.NoError(t, err)
+
+	// This will fail because we don't have a valid attestation object,
+	// but it tests that the function is wired up correctly
+	_, err = ParseCredentialCreation(data)
+	// We expect an error because the attestation object is not valid
+	assert.Error(t, err, "Should return error for incomplete attestation data")
+}
+
+// Test ParseCredentialAssertion with invalid data
+func TestParseCredentialAssertion_InvalidData(t *testing.T) {
+	invalidData := []byte(`{"id": "test", "type": "invalid"}`)
+	_, err := ParseCredentialAssertion(invalidData)
+	assert.Error(t, err, "Should return error for invalid assertion data")
+}
+
+// Benchmark tests
+func BenchmarkNewChallenge(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_, _ = NewChallenge()
+	}
+}
+
+func BenchmarkEncodeBase64URL(b *testing.B) {
+	data := make([]byte, 32)
+	rand.Read(data)
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		_ = EncodeBase64URL(data)
+	}
+}
+
+func BenchmarkDecodeBase64URL(b *testing.B) {
+	data := make([]byte, 32)
+	rand.Read(data)
+	encoded := EncodeBase64URL(data)
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		_, _ = DecodeBase64URL(encoded)
+	}
+}
+
+func BenchmarkMarshalCredentialCreation(b *testing.B) {
+	cred := &webauthn.CredentialCreationResponse{
+		PublicKeyCredential: webauthn.PublicKeyCredential{
+			Credential: webauthn.Credential{
+				ID:   "test-id",
+				Type: "public-key",
+			},
+		},
+	}
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		_, _ = MarshalCredentialCreation(cred)
+	}
+}

coverage.out

@@ -0,0 +1,58 @@
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