feature/simplify ucan mpc did (#1195)

* feat: enable DID auth middleware

* feat: implement passkey creation flow

* feat: persist user address in cookie and retrieve user profile using address cookie

* feat: implement human verification challenge during session initialization

* refactor: remove unnecessary random number generation in profile creation

* refactor: rename credential validation handler and update related routes

* feat: improve profile validation and user experience

* feat: add page rendering for profile and passkey creation

* refactor: remove unused register handler and update routes

* refactor: remove unused imports and simplify credential validation

* fix: Correct insecure gRPC client connection

* refactor: rename models files for better organization

* refactor: refactor grpc client creation and management

* refactor: refactor common clients package

* <no value>

* feat: add CapAccount, CapInterchain, CapVault enums

* feat: add ChainId to ResAccount and ResInterchain

* feat: add asset code to resource account enumeration

* refactor: rename services package to providers

* feat: implement gateway database interactions

* refactor: move gateway repository to internal/gateway

* refactor: Migrate database provider to use sqlx

* refactor: Rename Vaults to VaultProvider in HTTPContext struct

* refactor: Migrate from GORM to sqlc Queries in database context methods

* refactor: Replace GORM with standard SQL and simplify database initialization

* refactor: Migrate session management from GORM to sqlc with type conversion

* refactor: Update import paths and model references in context package

* fix: Resolve session type conversion and middleware issues

* refactor: Migrate database from GORM to sqlx

* refactor: Move models to pkg/common, improve code structure

* refactor: move repository package to internal directory

* refactor: move gateway internal packages to context directory

* refactor: migrate database provider to use sqlx queries

* feat: add session ID to HTTP context and use it to load session data

* feat: implement vault creation API endpoint

* feat: add DIDKey generation from PubKey

* refactor: remove unused DIDAuth components

* refactor: move DID auth controller to vault context

* chore: remove unused DIDAuth package

* refactor: improve clarity of enclave refresh function

* feat: implement nonce-based key encryption for improved security

* feat: Add Export and Import methods with comprehensive tests for Enclave

* fix: Validate AES key length in keyshare encryption and decryption

* fix: Resolve key length validation by hashing input keys

* refactor: Update keyshare import to use protocol decoding

* feat: Refactor enclave encryption to support full enclave export/import

* refactor: Simplify Enclave interface methods by removing role parameter

* refactor: remove unnecessary serialization from enclave interface

* refactor: rename models package in gateway context

* refactor: rename keystore vault constants

* refactor: remove context parameter from Resolver methods

* feat: add CurrentBlock context function and update related components

* refactor: rename resolver.go to resolvers.go

* feat: Add SQLite random() generation for session and profile initialization

* refactor: Update SQL queries to use SQLite-style parameter placeholders

* refactor: Replace '?' placeholders with '$n' PostgreSQL parameter syntax

* <no value>

* refactor: refactor gateway to use middleware for database interactions and improve modularity

* feat: implement gateway for Sonr highway

* refactor: Remove unused gateway context and refactor cookie/header handling

* refactor: improve server initialization and middleware handling

* feat: implement human verification for profile creation

* feat: implement session management middleware

* refactor: refactor common models and config to internal package

* refactor: move env config to internal/config

* refactor: move database-related code to  directory

* refactor: move IPFS client to common package and improve code structure

* refactor: move querier to common package and rename to chain_query

* refactor: move webworker model to internal/models

* feat: add initial view template for Sonr.ID

* docs(concepts): Add documentation for cosmos-proto

* docs: move IBC transfer documentation to tools section

* refactor: rename initpkl.go to pkl_init.go for better naming consistency

* docs(theme): update dark mode toggle icons

* refactor: update sqlite3 driver to ncruces/go-sqlite3

* feat: add Vault model and database interactions

* refactor: Improve SQLite schema with better constraints and indexes

* chore: update project dependencies

* fix: use grpc.WithInsecure() for gRPC connection

* config: set localhost as default Sonr gRPC URL

* refactor: improve gateway middleware and refactor server initialization

* refactor: Remove foreign key pragma from schema SQL

* refactor: Remove foreign key constraints from database schema

* refactor: Convert primary key columns from INTEGER to TEXT

* refactor: Remove unnecessary redirect in error handling

pkg/gateway/middleware/vaults.go

@@ -0,0 +1,57 @@
+package middleware
+
+import (
+	"fmt"
+
+	"github.com/labstack/echo/v4"
+	"github.com/onsonr/sonr/crypto/mpc"
+	"github.com/onsonr/sonr/internal/context"
+	"github.com/onsonr/sonr/pkg/gateway/types"
+	"lukechampine.com/blake3"
+)
+
+func Spawn(c echo.Context) (types.CreatePasskeyParams, error) {
+	cc := c.(*GatewayContext)
+	block := fmt.Sprintf("%d", CurrentBlock(c))
+	handle := GetHandle(c)
+	origin := GetOrigin(c)
+	challenge := GetSessionChallenge(c)
+	sid := GetSessionID(c)
+	nonce, err := calcNonce(sid)
+	if err != nil {
+		return types.DefaultCreatePasskeyParams(), err
+	}
+	encl, err := mpc.GenEnclave(nonce)
+	if err != nil {
+		return types.DefaultCreatePasskeyParams(), err
+	}
+	cc.stagedEnclaves[sid] = encl
+	context.WriteCookie(c, context.SonrAddress, encl.Address())
+	return types.CreatePasskeyParams{
+		Address:       encl.Address(),
+		Handle:        handle,
+		Name:          origin,
+		Challenge:     challenge,
+		CreationBlock: block,
+	}, nil
+}
+
+func Claim() (types.CreatePasskeyParams, error) {
+	return types.CreatePasskeyParams{}, nil
+}
+
+// Uses blake3 to hash the sessionID to generate a nonce of length 12 bytes
+func calcNonce(sessionID string) ([]byte, error) {
+	hash := blake3.New(32, nil)
+	_, err := hash.Write([]byte(sessionID))
+	if err != nil {
+		return nil, err
+	}
+	// Read the hash into a byte slice
+	nonce := make([]byte, 12)
+	_, err = hash.Write(nonce)
+	if err != nil {
+		return nil, err
+	}
+	return nonce, nil
+}