update to keyforge and add sign and verify

Makefile

@@ -1,5 +1,5 @@
 .PHONY: all
-all: clean build-node build-keygen build-manager
+all: clean build-node build-keyforge build-manager
 
 .PHONY: test
 test:
@@ -14,10 +14,10 @@ build-node:
 	cd cmd/node && go build -o ../../dist/b7s
 	@echo "\n✅ Done.\n"
 
-.PHONY: build-keygen
-build-keygen:
+.PHONY: build-keyforge
+build-keyforge:
 	@echo "\n🛠 Building node keygen...\n"
-	cd cmd/keygen && go build -o ../../dist/b7s-keygen
+	cd cmd/keyforge && go build -o ../../dist/b7s-keyforge
 	@echo "\n✅ Done.\n"
 
 .PHONY: build-manager

cmd/keyforge/README.md

@@ -0,0 +1,55 @@
+## KeyForge
+
+The `keyforge` utility is used for managing cryptographic keys and signing/verifying messages or data. It provides the following options:
+
+### Generate Keys
+
+Generate a new keypair and save it to a file:
+
+$ ./keyforge -o
+
+### Sign and Verify
+
+Sign and verify messages or data using your generated keys:
+
+#### Sign a Message
+
+Sign a message and save the signature:
+
+$ ./keyforge -s "Your message" -o
+
+#### Sign a File
+
+Sign a file and save the signature:
+
+$ ./keyforge -f -o
+
+#### Verify a Signature
+
+Verify a message or file's signature using the \`keyforge\` utility:
+
+$ ./keyforge -pubkey -message "Original message" -signature
+
+#### Verify a Signature with PeerID
+
+Verify a message or file's signature using a PeerID with the \`keyforge\` utility:
+
+$ ./keyforge -peerid -message "Original message" -signature
+
+#### Verify a Signature with OpenSSL
+
+Verify a message or file's signature using OpenSSL:
+
+##### Create a Signature
+
+Use OpenSSL to create a signature:
+
+$ openssl dgst -sha256 -sign -out message.sig
+
+##### Verify a Signature
+
+Use OpenSSL to verify a signature:
+
+$ openssl dgst -sha256 -verify -signature message.sig -in
+
+These commands enable you to manage cryptographic keys and perform signing and verification operations, including using OpenSSL for verification, conveniently within the Blockless b7s Node network.

cmd/keyforge/key_management.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"encoding/base64"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/libp2p/go-libp2p-core/crypto"
+	"github.com/libp2p/go-libp2p-core/peer"
+)
+
+// LoadOrCreateKeys loads existing keys or creates new ones if not present
+func LoadOrCreateKeys(privKeyFile string, outputDir string) (crypto.PrivKey, crypto.PubKey, error) {
+	var priv crypto.PrivKey
+	var pub crypto.PubKey
+	var err error
+
+	if _, err := os.Stat(privKeyFile); os.IsNotExist(err) {
+		priv, pub, err = crypto.GenerateKeyPair(crypto.Ed25519, 0)
+		if err != nil {
+			return nil, nil, err
+		}
+	} else {
+		privBytes, err := ioutil.ReadFile(privKeyFile)
+		if err != nil {
+			return nil, nil, err
+		}
+
+		priv, err = crypto.UnmarshalPrivateKey(privBytes)
+		if err != nil {
+			return nil, nil, err
+		}
+		pub = priv.GetPublic()
+	}
+
+	privPayload, err := crypto.MarshalPrivateKey(priv)
+	if err != nil {
+		log.Fatalf("Could not marshal private key: %s", err)
+	}
+
+	pubPayload, err := crypto.MarshalPublicKey(pub)
+	if err != nil {
+		log.Fatalf("Could not marshal public key: %s", err)
+	}
+
+	identity, err := peer.IDFromPublicKey(pub)
+	if err != nil {
+		log.Fatalf("Could not generate identity: %s", err)
+	}
+
+	pubKeyFile := filepath.Join(outputDir, pubKeyName)
+	err = ioutil.WriteFile(pubKeyFile, pubPayload, pubKeyPermissions)
+	if err != nil {
+		log.Fatalf("Could not write public key to file: %s", err)
+	}
+
+	pubKeyTextFile := filepath.Join(outputDir, pubKeyTxtName)
+	pubKeyBase64 := base64.StdEncoding.EncodeToString(pubPayload)
+	err = ioutil.WriteFile(pubKeyTextFile, []byte(pubKeyBase64), pubKeyPermissions)
+	if err != nil {
+		log.Fatalf("Could not write public key text to file: %s", err)
+	}
+
+	identityFile := filepath.Join(outputDir, identityName)
+	err = ioutil.WriteFile(identityFile, []byte(identity.Pretty()), pubKeyPermissions)
+	if err != nil {
+		log.Fatalf("Could not write identity to file: %s", err)
+	}
+
+	privKeyFile = filepath.Join(outputDir, privKeyName)
+	err = ioutil.WriteFile(privKeyFile, privPayload, privKeyPermissions)
+	if err != nil {
+		log.Fatalf("Could not write private key to file: %s", err)
+	}
+
+	// Write peer ID to file
+	peerIDFile := filepath.Join(outputDir, peerIDFileName)
+	err = ioutil.WriteFile(peerIDFile, []byte(identity.Pretty()), pubKeyPermissions)
+	if err != nil {
+		log.Fatalf("Could not write peer ID to file: %s", err)
+	}
+
+	return priv, pub, nil
+}

cmd/keyforge/main.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/pflag"
+)
+
+const (
+	privKeyName        = "priv.bin"
+	pubKeyName         = "pub.bin"
+	pubKeyTxtName      = "pubkey.txt"
+	identityName       = "identity"
+	peerIDFileName     = "peerid.txt"
+	privKeyPermissions = 0600
+	pubKeyPermissions  = 0644
+
+)
+
+func main() {
+	var (
+		flagOutputDir string
+		flagString    string
+		flagFile      string
+		flagPublicKey string
+		flagMessage   string
+		flagSignature string
+		flagPeerID    string
+	)
+
+	pflag.StringVar(&flagPeerID, "peerid", "", "PeerID for verification")
+	pflag.StringVarP(&flagOutputDir, "output", "o", ".", "directory where keys should be stored")
+	pflag.StringVarP(&flagString, "string", "s", "", "string to sign and verify")
+	pflag.StringVarP(&flagFile, "file", "f", "", "file to sign and verify")
+	pflag.StringVar(&flagPublicKey, "pubkey", "", "Base64 encoded public key for verification")
+	pflag.StringVar(&flagMessage, "message", "", "The original message to verify")
+	pflag.StringVar(&flagSignature, "signature", "", "Base64 encoded signature to verify")
+
+	pflag.Parse()
+
+	// Initialize output directory
+	err := os.MkdirAll(flagOutputDir, os.ModePerm)
+	if err != nil {
+		log.Fatalf("Could not create output directory: %s", err)
+	}
+
+	privKeyFile := filepath.Join(flagOutputDir, privKeyName)
+
+	priv, pub, err := LoadOrCreateKeys(privKeyFile, flagOutputDir)
+	if err != nil {
+		log.Fatalf("Error loading or creating keys: %s", err)
+	}
+
+	if flagString != "" || flagFile != "" {
+		HandleSignAndVerify(priv, pub, flagString, flagFile, flagOutputDir)
+	}
+
+	if flagPublicKey != "" && flagMessage != "" && flagSignature != "" {
+		VerifyGivenSignature(flagPublicKey, flagMessage, flagSignature)
+	}
+
+	if flagPeerID != "" && flagMessage != "" && flagSignature != "" {
+		VerifyGivenSignatureWithPeerID(flagPeerID, flagMessage, flagSignature)
+	}
+}

cmd/keyforge/sign_verify.go

@@ -0,0 +1,122 @@
+package main
+
+import (
+	"encoding/base64"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"path/filepath"
+
+	"github.com/libp2p/go-libp2p-core/crypto"
+	"github.com/libp2p/go-libp2p-core/peer"
+)
+
+// HandleSignAndVerify performs the signing and verification based on the provided keys and flags
+func HandleSignAndVerify(priv crypto.PrivKey, pub crypto.PubKey, flagString string, flagFile string, flagOutput string) {
+	// Sign and verify string
+	if flagString != "" {
+		signature, err := priv.Sign([]byte(flagString))
+		if err != nil {
+			log.Fatalf("Could not sign string: %s", err)
+		}
+
+		isValid, err := pub.Verify([]byte(flagString), signature)
+		if err != nil {
+			log.Fatalf("Could not verify string: %s", err)
+		}
+
+		signatureStr := base64.StdEncoding.EncodeToString(signature)
+		if isValid {
+			fmt.Printf("String signature verified successfully. Signature: %s\n", signatureStr)
+		} else {
+			fmt.Println("String signature verification failed.")
+		}
+	}
+
+	// Sign and verify file
+	if flagFile != "" {
+		fileData, err := ioutil.ReadFile(flagFile)
+		if err != nil {
+			log.Fatalf("Could not read file: %s", err)
+		}
+
+		fileSignature, err := priv.Sign(fileData)
+		if err != nil {
+			log.Fatalf("Could not sign file: %s", err)
+		}
+
+		isFileValid, err := pub.Verify(fileData, fileSignature)
+		if err != nil {
+			log.Fatalf("Could not verify file: %s", err)
+		}
+
+		signatureFileStr := base64.StdEncoding.EncodeToString(fileSignature)
+		if isFileValid {
+			fmt.Printf("File signature verified successfully. Signature: %s\n", signatureFileStr)
+		} else {
+			fmt.Println("File signature verification failed.")
+		}
+
+		if flagOutput != "" {
+			signatureFilePath := filepath.Join(flagOutput, "file_signature.enc.txt")
+			err := ioutil.WriteFile(signatureFilePath, []byte(signatureFileStr), 0644)
+			if err != nil {
+				log.Fatalf("Could not write signature to file: %s", err)
+			}
+		}
+	}
+}
+
+// VerifyGivenSignature verifies a message with a given signature and public key
+func VerifyGivenSignature(encodedPubKey string, message string, encodedSignature string) {
+	pubKeyBytes, err := base64.StdEncoding.DecodeString(encodedPubKey)
+	if err != nil {
+		log.Fatalf("Could not decode public key: %s", err)
+	}
+
+	pubKey, err := crypto.UnmarshalPublicKey(pubKeyBytes)
+	if err != nil {
+		log.Fatalf("Could not unmarshal public key: %s", err)
+	}
+
+	signatureBytes, err := base64.StdEncoding.DecodeString(encodedSignature)
+	if err != nil {
+		log.Fatalf("Could not decode signature: %s", err)
+	}
+
+	isValid, err := pubKey.Verify([]byte(message), signatureBytes)
+	if err != nil {
+		log.Fatalf("Could not verify string: %s", err)
+	}
+
+	if isValid {
+		fmt.Println("Signature verified successfully.")
+	} else {
+		fmt.Println("Signature verification failed.")
+	}
+}
+
+// VerifyGivenSignatureWithPeerID verifies a message with a given signature and PeerID
+func VerifyGivenSignatureWithPeerID(peerIDStr string, message string, encodedSignature string) {
+	log.Println("Verifying signature with peerid")
+	peerID, err := peer.Decode(peerIDStr)
+	if err != nil {
+		log.Fatalf("Could not decode PeerID: %s", err)
+	}
+
+	pubKey, err := peerID.ExtractPublicKey()
+	if err != nil || pubKey == nil {
+		log.Fatalf("Could not extract public key from PeerID: %s", err)
+	}
+
+	pubKeyBytes, err := crypto.MarshalPublicKey(pubKey)
+	if err != nil {
+		log.Fatalf("Could not marshal public key to bytes: %s", err)
+	}
+
+	// This will give you a base64 string representation of the public key
+	pubKeyBase64 := base64.StdEncoding.EncodeToString(pubKeyBytes)
+	log.Printf("Extracted public key from PeerID (Base64): %s", pubKeyBase64)
+
+	VerifyGivenSignature(pubKeyBase64, message, encodedSignature)
+}