Change keystore to version 3

* Change password protection crypto in keystore to version 3
* Update KeyStoreTests/basic_tests.json
* Add support for PBKDF2 with HMAC-SHA256
* Change MAC and encryption key to avoid unnecessary hashing
* Add tests for test vectors in new wiki page defining version 3
* Add tests for new keystore tests in ethereum/tests repo
* Move JSON loading util to common for use in both tests and
  crypto packages
* Add backwards compatibility with key store version 1

common/test_utils.go

+package common
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+)
+
+// LoadJSON reads the given file and unmarshals its content.
+func LoadJSON(file string, val interface{}) error {
+	content, err := ioutil.ReadFile(file)
+	if err != nil {
+		return err
+	}
+	if err := json.Unmarshal(content, val); err != nil {
+		if syntaxerr, ok := err.(*json.SyntaxError); ok {
+			line := findLine(content, syntaxerr.Offset)
+			return fmt.Errorf("JSON syntax error at %v:%v: %v", file, line, err)
+		}
+		return fmt.Errorf("JSON unmarshal error in %v: %v", file, err)
+	}
+	return nil
+}
+
+// findLine returns the line number for the given offset into data.
+func findLine(data []byte, offset int64) (line int) {
+	line = 1
+	for i, r := range string(data) {
+		if int64(i) >= offset {
+			return
+		}
+		if r == '\n' {
+			line++
+		}
+	}
+	return
+}

crypto/crypto.go

@@ -258,19 +258,31 @@ func decryptPreSaleKey(fileContent []byte, password string) (key *Key, err error
 	return key, err
 }
 
-func aesCBCDecrypt(key []byte, cipherText []byte, iv []byte) (plainText []byte, err error) {
+// AES-128 is selected due to size of encryptKey
+func aesCTRXOR(key, inText, iv []byte) ([]byte, error) {
 	aesBlock, err := aes.NewCipher(key)
 	if err != nil {
-		return plainText, err
+		return nil, err
+	}
+	stream := cipher.NewCTR(aesBlock, iv)
+	outText := make([]byte, len(inText))
+	stream.XORKeyStream(outText, inText)
+	return outText, err
+}
+
+func aesCBCDecrypt(key, cipherText, iv []byte) ([]byte, error) {
+	aesBlock, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
 	}
 	decrypter := cipher.NewCBCDecrypter(aesBlock, iv)
-	paddedPlainText := make([]byte, len(cipherText))
-	decrypter.CryptBlocks(paddedPlainText, cipherText)
-	plainText = PKCS7Unpad(paddedPlainText)
-	if plainText == nil {
+	paddedPlaintext := make([]byte, len(cipherText))
+	decrypter.CryptBlocks(paddedPlaintext, cipherText)
+	plaintext := PKCS7Unpad(paddedPlaintext)
+	if plaintext == nil {
 		err = errors.New("Decryption failed: PKCS7Unpad failed after AES decryption")
 	}
-	return plainText, err
+	return plaintext, err
 }
 
 // From https://leanpub.com/gocrypto/read#leanpub-auto-block-cipher-modes

crypto/key.go

@@ -35,7 +35,7 @@ import (
 )
 
 const (
-	version = "1"
+	version = 3
 )
 
 type Key struct {
@@ -51,10 +51,17 @@ type plainKeyJSON struct {
 	Address    string `json:"address"`
 	PrivateKey string `json:"privatekey"`
 	Id         string `json:"id"`
-	Version    string `json:"version"`
+	Version    int    `json:"version"`
 }
 
-type encryptedKeyJSON struct {
+type encryptedKeyJSONV3 struct {
+	Address string `json:"address"`
+	Crypto  cryptoJSON
+	Id      string `json:"id"`
+	Version int    `json:"version"`
+}
+
+type encryptedKeyJSONV1 struct {
 	Address string `json:"address"`
 	Crypto  cryptoJSON
 	Id      string `json:"id"`
@@ -66,9 +73,8 @@ type cryptoJSON struct {
 	CipherText   string                 `json:"ciphertext"`
 	CipherParams cipherparamsJSON       `json:"cipherparams"`
 	KDF          string                 `json:"kdf"`
-	KDFParams    scryptParamsJSON `json:"kdfparams"`
+	KDFParams    map[string]interface{} `json:"kdfparams"`
 	MAC          string                 `json:"mac"`
-	Version      string           `json:"version"`
 }
 
 type cipherparamsJSON struct {

crypto/key_store_passphrase.go

@@ -26,40 +26,7 @@
 This key store behaves as KeyStorePlain with the difference that
 the private key is encrypted and on disk uses another JSON encoding.
 
-Cryptography:
-
-1. Encryption key is first 16 bytes of scrypt derived key
-   from user passphrase. Scrypt parameters
-   (work factors) [1][2] are defined as constants below.
-2. Scrypt salt is 32 random bytes from CSPRNG.
-   It's stored in plain next in the key file.
-3. MAC is SHA3-256 of concatenation of ciphertext and
-   last 16 bytes of scrypt derived key.
-4. Plaintext is the EC private key bytes.
-5. Encryption algo is AES 128 CBC [3][4]
-6. CBC IV is 16 random bytes from CSPRNG.
-   It's stored in plain next in the key file.
-7. Plaintext padding is PKCS #7 [5][6]
-
-Encoding:
-
-1. On disk, the ciphertext, MAC, salt and IV are encoded in a JSON object.
-   cat a key file to see the structure.
-2. byte arrays are base64 JSON strings.
-3. The EC private key bytes are in uncompressed form [7].
-   They are a big-endian byte slice of the absolute value of D [8][9].
-
-References:
-
-1. http://www.tarsnap.com/scrypt/scrypt-slides.pdf
-2. http://stackoverflow.com/questions/11126315/what-are-optimal-scrypt-work-factors
-3. http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
-4. http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher-block_chaining_.28CBC.29
-5. https://leanpub.com/gocrypto/read#leanpub-auto-block-cipher-modes
-6. http://tools.ietf.org/html/rfc2315
-7. http://bitcoin.stackexchange.com/questions/3059/what-is-a-compressed-bitcoin-key
-8. http://golang.org/pkg/crypto/ecdsa/#PrivateKey
-9. https://golang.org/pkg/math/big/#Int.Bytes
+The crypto is documented at https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition
 
 */
 
@@ -68,22 +35,24 @@ package crypto
 import (
 	"bytes"
 	"crypto/aes"
-	"crypto/cipher"
+	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
+	"reflect"
 
 	"code.google.com/p/go-uuid/uuid"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto/randentropy"
+	"golang.org/x/crypto/pbkdf2"
 	"golang.org/x/crypto/scrypt"
 )
 
 const (
-	keyHeaderVersion = "1"
 	keyHeaderKDF = "scrypt"
 	// 2^18 / 8 / 1 uses 256MB memory and approx 1s CPU time on a modern CPU.
 	scryptN     = 1 << 18
@@ -105,7 +74,7 @@ func (ks keyStorePassphrase) GenerateNewKey(rand io.Reader, auth string) (key *K
 }
 
 func (ks keyStorePassphrase) GetKey(keyAddr common.Address, auth string) (key *Key, err error) {
-	keyBytes, keyId, err := DecryptKey(ks, keyAddr, auth)
+	keyBytes, keyId, err := DecryptKeyFromFile(ks, keyAddr, auth)
 	if err != nil {
 		return nil, err
 	}
@@ -129,51 +98,43 @@ func (ks keyStorePassphrase) StoreKey(key *Key, auth string) (err error) {
 		return err
 	}
 
-	encryptKey := Sha3(derivedKey[:16])[:16]
-
+	encryptKey := derivedKey[:16]
 	keyBytes := FromECDSA(key.PrivateKey)
-	toEncrypt := PKCS7Pad(keyBytes)
 
-	AES128Block, err := aes.NewCipher(encryptKey)
+	iv := randentropy.GetEntropyCSPRNG(aes.BlockSize) // 16
+	cipherText, err := aesCTRXOR(encryptKey, keyBytes, iv)
 	if err != nil {
 		return err
 	}
 
-	iv := randentropy.GetEntropyCSPRNG(aes.BlockSize) // 16
-	AES128CBCEncrypter := cipher.NewCBCEncrypter(AES128Block, iv)
-	cipherText := make([]byte, len(toEncrypt))
-	AES128CBCEncrypter.CryptBlocks(cipherText, toEncrypt)
-
 	mac := Sha3(derivedKey[16:32], cipherText)
 
-	scryptParamsJSON := scryptParamsJSON{
-		N:     scryptN,
-		R:     scryptr,
-		P:     scryptp,
-		DkLen: scryptdkLen,
-		Salt:  hex.EncodeToString(salt),
-	}
+	scryptParamsJSON := make(map[string]interface{}, 5)
+	scryptParamsJSON["n"] = scryptN
+	scryptParamsJSON["r"] = scryptr
+	scryptParamsJSON["p"] = scryptp
+	scryptParamsJSON["dklen"] = scryptdkLen
+	scryptParamsJSON["salt"] = hex.EncodeToString(salt)
 
 	cipherParamsJSON := cipherparamsJSON{
 		IV: hex.EncodeToString(iv),
 	}
 
 	cryptoStruct := cryptoJSON{
-		Cipher:       "aes-128-cbc",
+		Cipher:       "aes-128-ctr",
 		CipherText:   hex.EncodeToString(cipherText),
 		CipherParams: cipherParamsJSON,
 		KDF:          "scrypt",
 		KDFParams:    scryptParamsJSON,
 		MAC:          hex.EncodeToString(mac),
-		Version:      "1",
 	}
-	encryptedKeyJSON := encryptedKeyJSON{
+	encryptedKeyJSONV3 := encryptedKeyJSONV3{
 		hex.EncodeToString(key.Address[:]),
 		cryptoStruct,
 		key.Id.String(),
 		version,
 	}
-	keyJSON, err := json.Marshal(encryptedKeyJSON)
+	keyJSON, err := json.Marshal(encryptedKeyJSONV3)
 	if err != nil {
 		return err
 	}
@@ -183,7 +144,7 @@ func (ks keyStorePassphrase) StoreKey(key *Key, auth string) (err error) {
 
 func (ks keyStorePassphrase) DeleteKey(keyAddr common.Address, auth string) (err error) {
 	// only delete if correct passphrase is given
-	_, _, err = DecryptKey(ks, keyAddr, auth)
+	_, _, err = DecryptKeyFromFile(ks, keyAddr, auth)
 	if err != nil {
 		return err
 	}
@@ -192,17 +153,43 @@ func (ks keyStorePassphrase) DeleteKey(keyAddr common.Address, auth string) (err
 	return os.RemoveAll(keyDirPath)
 }
 
-func DecryptKey(ks keyStorePassphrase, keyAddr common.Address, auth string) (keyBytes []byte, keyId []byte, err error) {
+func DecryptKeyFromFile(ks keyStorePassphrase, keyAddr common.Address, auth string) (keyBytes []byte, keyId []byte, err error) {
 	fileContent, err := GetKeyFile(ks.keysDirPath, keyAddr)
 	if err != nil {
 		return nil, nil, err
 	}
 
-	keyProtected := new(encryptedKeyJSON)
-	err = json.Unmarshal(fileContent, keyProtected)
+	m := make(map[string]interface{})
+	err = json.Unmarshal(fileContent, &m)
 
-	keyId = uuid.Parse(keyProtected.Id)
+	v := reflect.ValueOf(m["version"])
+	if v.Kind() == reflect.String && v.String() == "1" {
+		k := new(encryptedKeyJSONV1)
+		err := json.Unmarshal(fileContent, k)
+		if err != nil {
+			return nil, nil, err
+		}
+		return decryptKeyV1(k, auth)
+	} else {
+		k := new(encryptedKeyJSONV3)
+		err := json.Unmarshal(fileContent, k)
+		if err != nil {
+			return nil, nil, err
+		}
+		return decryptKeyV3(k, auth)
+	}
+}
 
+func decryptKeyV3(keyProtected *encryptedKeyJSONV3, auth string) (keyBytes []byte, keyId []byte, err error) {
+	if keyProtected.Version != version {
+		return nil, nil, fmt.Errorf("Version not supported: %v", keyProtected.Version)
+	}
+
+	if keyProtected.Crypto.Cipher != "aes-128-ctr" {
+		return nil, nil, fmt.Errorf("Cipher not supported: %v", keyProtected.Crypto.Cipher)
+	}
+
+	keyId = uuid.Parse(keyProtected.Id)
 	mac, err := hex.DecodeString(keyProtected.Crypto.MAC)
 	if err != nil {
 		return nil, nil, err
@@ -218,26 +205,48 @@ func DecryptKey(ks keyStorePassphrase, keyAddr common.Address, auth string) (key
 		return nil, nil, err
 	}
 
-	salt, err := hex.DecodeString(keyProtected.Crypto.KDFParams.Salt)
+	derivedKey, err := getKDFKey(keyProtected.Crypto, auth)
 	if err != nil {
 		return nil, nil, err
 	}
 
-	n := keyProtected.Crypto.KDFParams.N
-	r := keyProtected.Crypto.KDFParams.R
-	p := keyProtected.Crypto.KDFParams.P
-	dkLen := keyProtected.Crypto.KDFParams.DkLen
+	calculatedMAC := Sha3(derivedKey[16:32], cipherText)
+	if !bytes.Equal(calculatedMAC, mac) {
+		return nil, nil, errors.New("Decryption failed: MAC mismatch")
+	}
+
+	plainText, err := aesCTRXOR(derivedKey[:16], cipherText, iv)
+	if err != nil {
+		return nil, nil, err
+	}
+	return plainText, keyId, err
+}
 
-	authArray := []byte(auth)
-	derivedKey, err := scrypt.Key(authArray, salt, n, r, p, dkLen)
+func decryptKeyV1(keyProtected *encryptedKeyJSONV1, auth string) (keyBytes []byte, keyId []byte, err error) {
+	keyId = uuid.Parse(keyProtected.Id)
+	mac, err := hex.DecodeString(keyProtected.Crypto.MAC)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	iv, err := hex.DecodeString(keyProtected.Crypto.CipherParams.IV)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	cipherText, err := hex.DecodeString(keyProtected.Crypto.CipherText)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	derivedKey, err := getKDFKey(keyProtected.Crypto, auth)
 	if err != nil {
 		return nil, nil, err
 	}
 
 	calculatedMAC := Sha3(derivedKey[16:32], cipherText)
 	if !bytes.Equal(calculatedMAC, mac) {
-		err = errors.New("Decryption failed: MAC mismatch")
-		return nil, nil, err
+		return nil, nil, errors.New("Decryption failed: MAC mismatch")
 	}
 
 	plainText, err := aesCBCDecrypt(Sha3(derivedKey[:16])[:16], cipherText, iv)
@@ -246,3 +255,41 @@ func DecryptKey(ks keyStorePassphrase, keyAddr common.Address, auth string) (key
 	}
 	return plainText, keyId, err
 }
+
+func getKDFKey(cryptoJSON cryptoJSON, auth string) ([]byte, error) {
+	authArray := []byte(auth)
+	salt, err := hex.DecodeString(cryptoJSON.KDFParams["salt"].(string))
+	if err != nil {
+		return nil, err
+	}
+	dkLen := ensureInt(cryptoJSON.KDFParams["dklen"])
+
+	if cryptoJSON.KDF == "scrypt" {
+		n := ensureInt(cryptoJSON.KDFParams["n"])
+		r := ensureInt(cryptoJSON.KDFParams["r"])
+		p := ensureInt(cryptoJSON.KDFParams["p"])
+		return scrypt.Key(authArray, salt, n, r, p, dkLen)
+
+	} else if cryptoJSON.KDF == "pbkdf2" {
+		c := ensureInt(cryptoJSON.KDFParams["c"])
+		prf := cryptoJSON.KDFParams["prf"].(string)
+		if prf != "hmac-sha256" {
+			return nil, fmt.Errorf("Unsupported PBKDF2 PRF: ", prf)
+		}
+		key := pbkdf2.Key(authArray, salt, c, dkLen, sha256.New)
+		return key, nil
+	}
+
+	return nil, fmt.Errorf("Unsupported KDF: ", cryptoJSON.KDF)
+}
+
+// TODO: can we do without this when unmarshalling dynamic JSON?
+// why do integers in KDF params end up as float64 and not int after
+// unmarshal?
+func ensureInt(x interface{}) int {
+	res, ok := x.(int)
+	if !ok {
+		res = int(x.(float64))
+	}
+	return res
+}

crypto/key_store_test.go

 package crypto
 
 import (
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/crypto/randentropy"
+	"encoding/hex"
+	"fmt"
 	"reflect"
 	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto/randentropy"
 )
 
 func TestKeyStorePlain(t *testing.T) {
@@ -97,3 +100,110 @@ func TestImportPreSaleKey(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+// Test and utils for the key store tests in the Ethereum JSON tests;
+// tests/KeyStoreTests/basic_tests.json
+type KeyStoreTestV3 struct {
+	Json     encryptedKeyJSONV3
+	Password string
+	Priv     string
+}
+
+type KeyStoreTestV1 struct {
+	Json     encryptedKeyJSONV1
+	Password string
+	Priv     string
+}
+
+func TestV3_PBKDF2_1(t *testing.T) {
+	tests := loadKeyStoreTestV3("tests/v3_test_vector.json", t)
+	testDecryptV3(tests["wikipage_test_vector_pbkdf2"], t)
+}
+
+func TestV3_PBKDF2_2(t *testing.T) {
+	tests := loadKeyStoreTestV3("../tests/files/KeyStoreTests/basic_tests.json", t)
+	testDecryptV3(tests["test1"], t)
+}
+
+func TestV3_PBKDF2_3(t *testing.T) {
+	tests := loadKeyStoreTestV3("../tests/files/KeyStoreTests/basic_tests.json", t)
+	testDecryptV3(tests["python_generated_test_with_odd_iv"], t)
+}
+
+func TestV3_PBKDF2_4(t *testing.T) {
+	tests := loadKeyStoreTestV3("../tests/files/KeyStoreTests/basic_tests.json", t)
+	testDecryptV3(tests["evilnonce"], t)
+}
+
+func TestV3_Scrypt_1(t *testing.T) {
+	tests := loadKeyStoreTestV3("tests/v3_test_vector.json", t)
+	testDecryptV3(tests["wikipage_test_vector_scrypt"], t)
+}
+
+func TestV3_Scrypt_2(t *testing.T) {
+	tests := loadKeyStoreTestV3("../tests/files/KeyStoreTests/basic_tests.json", t)
+	testDecryptV3(tests["test2"], t)
+}
+
+func TestV1_1(t *testing.T) {
+	tests := loadKeyStoreTestV1("tests/v1_test_vector.json", t)
+	testDecryptV1(tests["test1"], t)
+}
+
+func TestV1_2(t *testing.T) {
+	ks := NewKeyStorePassphrase("tests/v1")
+	addr := common.HexToAddress("cb61d5a9c4896fb9658090b597ef0e7be6f7b67e")
+	k, err := ks.GetKey(addr, "g")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if k.Address != addr {
+		t.Fatal(fmt.Errorf("Unexpected address: %v, expected %v", k.Address, addr))
+	}
+
+	privHex := hex.EncodeToString(FromECDSA(k.PrivateKey))
+	expectedHex := "d1b1178d3529626a1a93e073f65028370d14c7eb0936eb42abef05db6f37ad7d"
+	if privHex != expectedHex {
+		t.Fatal(fmt.Errorf("Unexpected privkey: %v, expected %v", privHex, expectedHex))
+	}
+}
+
+func testDecryptV3(test KeyStoreTestV3, t *testing.T) {
+	privBytes, _, err := decryptKeyV3(&test.Json, test.Password)
+	if err != nil {
+		t.Fatal(err)
+	}
+	privHex := hex.EncodeToString(privBytes)
+	if test.Priv != privHex {
+		t.Fatal(fmt.Errorf("Decrypted bytes not equal to test, expected %v have %v", test.Priv, privHex))
+	}
+}
+
+func testDecryptV1(test KeyStoreTestV1, t *testing.T) {
+	privBytes, _, err := decryptKeyV1(&test.Json, test.Password)
+	if err != nil {
+		t.Fatal(err)
+	}
+	privHex := hex.EncodeToString(privBytes)
+	if test.Priv != privHex {
+		t.Fatal(fmt.Errorf("Decrypted bytes not equal to test, expected %v have %v", test.Priv, privHex))
+	}
+}
+
+func loadKeyStoreTestV3(file string, t *testing.T) map[string]KeyStoreTestV3 {
+	tests := make(map[string]KeyStoreTestV3)
+	err := common.LoadJSON(file, &tests)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return tests
+}
+
+func loadKeyStoreTestV1(file string, t *testing.T) map[string]KeyStoreTestV1 {
+	tests := make(map[string]KeyStoreTestV1)
+	err := common.LoadJSON(file, &tests)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return tests
+}

crypto/tests/v1/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e/cb61d5a9c4896fb9658090b597ef0e7be6f7b67e

+{"address":"cb61d5a9c4896fb9658090b597ef0e7be6f7b67e","Crypto":{"cipher":"aes-128-cbc","ciphertext":"6143d3192db8b66eabd693d9c4e414dcfaee52abda451af79ccf474dafb35f1bfc7ea013aa9d2ee35969a1a2e8d752d0","cipherparams":{"iv":"35337770fc2117994ecdcad026bccff4"},"kdf":"scrypt","kdfparams":{"n":262144,"r":8,"p":1,"dklen":32,"salt":"9afcddebca541253a2f4053391c673ff9fe23097cd8555d149d929e4ccf1257f"},"mac":"3f3d5af884b17a100b0b3232c0636c230a54dc2ac8d986227219b0dd89197644","version":"1"},"id":"e25f7c1f-d318-4f29-b62c-687190d4d299","version":"1"}
\ No newline at end of file

crypto/tests/v1_test_vector.json

+{
+    "test1": {
+        "json": {
+            "Crypto": {
+                "cipher": "aes-128-cbc",
+                "cipherparams": {
+                    "iv": "35337770fc2117994ecdcad026bccff4"
+                },
+                "ciphertext": "6143d3192db8b66eabd693d9c4e414dcfaee52abda451af79ccf474dafb35f1bfc7ea013aa9d2ee35969a1a2e8d752d0",
+                "kdf": "scrypt",
+                "kdfparams": {
+                    "dklen": 32,
+                    "n": 262144,
+                    "p": 1,
+                    "r": 8,
+                    "salt": "9afcddebca541253a2f4053391c673ff9fe23097cd8555d149d929e4ccf1257f"
+                },
+                "mac": "3f3d5af884b17a100b0b3232c0636c230a54dc2ac8d986227219b0dd89197644",
+                "version": "1"
+            },
+            "address": "cb61d5a9c4896fb9658090b597ef0e7be6f7b67e",
+            "id": "e25f7c1f-d318-4f29-b62c-687190d4d299",
+            "version": "1"
+        },
+        "password": "g",
+        "priv": "d1b1178d3529626a1a93e073f65028370d14c7eb0936eb42abef05db6f37ad7d"
+    }
+}

crypto/tests/v3_test_vector.json

+{
+    "wikipage_test_vector_scrypt": {
+        "json": {
+            "crypto" : {
+                "cipher" : "aes-128-ctr",
+                "cipherparams" : {
+                    "iv" : "83dbcc02d8ccb40e466191a123791e0e"
+                },
+                "ciphertext" : "d172bf743a674da9cdad04534d56926ef8358534d458fffccd4e6ad2fbde479c",
+                "kdf" : "scrypt",
+                "kdfparams" : {
+                    "dklen" : 32,
+                    "n" : 262144,
+                    "r" : 1,
+                    "p" : 8,
+                    "salt" : "ab0c7876052600dd703518d6fc3fe8984592145b591fc8fb5c6d43190334ba19"
+                },
+                "mac" : "2103ac29920d71da29f15d75b4a16dbe95cfd7ff8faea1056c33131d846e3097"
+            },
+            "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6",
+            "version" : 3
+        },
+        "password": "testpassword",
+        "priv": "7a28b5ba57c53603b0b07b56bba752f7784bf506fa95edc395f5cf6c7514fe9d"
+    },
+    "wikipage_test_vector_pbkdf2": {
+        "json": {
+            "crypto" : {
+                "cipher" : "aes-128-ctr",
+                "cipherparams" : {
+                    "iv" : "6087dab2f9fdbbfaddc31a909735c1e6"
+                },
+                "ciphertext" : "5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46",
+                "kdf" : "pbkdf2",
+                "kdfparams" : {
+                    "c" : 262144,
+                    "dklen" : 32,
+                    "prf" : "hmac-sha256",
+                    "salt" : "ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd"
+                },
+                "mac" : "517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2"
+            },
+            "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6",
+            "version" : 3
+        },
+        "password": "testpassword",
+        "priv": "7a28b5ba57c53603b0b07b56bba752f7784bf506fa95edc395f5cf6c7514fe9d"
+    }
+}