Examples with ECCKeyPair com.fitpay.android.api.models.security.ECCKeyPair used on opensource projects

Example 1 with ECCKeyPair

use of com.fitpay.android.api.models.security.ECCKeyPair in project fitpay-android-sdk by fitpay.

the class StringUtils method getDecryptedString.

/**
 * Get decrypted string
 *
 * @param type            key type
 * @param encryptedString encrypted string
 * @return decrypted string
 */
public static String getDecryptedString(@KeysManager.KeyType int type, String encryptedString) {
    KeysManager keysManager = KeysManager.getInstance();
    JWEObject jweObject;
    try {
        jweObject = JWEObject.parse(encryptedString);
        JWEHeader jweHeader = jweObject.getHeader();
        if (jweHeader.getKeyID() == null || jweHeader.getKeyID().equals(keysManager.getKeyId(type))) {
            jweObject.decrypt(new AESDecrypter(keysManager.getSecretKey(type)));
            if ("JWT".equals(jweObject.getHeader().getContentType())) {
                SignedJWT signedJwt = jweObject.getPayload().toSignedJWT();
                ECCKeyPair keyPair = keysManager.getPairForType(type);
                ECPublicKey key = null;
                if ("https://fit-pay.com".equals(signedJwt.getJWTClaimsSet().getIssuer())) {
                    key = (ECPublicKey) keysManager.getPublicKey("EC", Hex.hexStringToBytes(keyPair.getServerPublicKey()));
                } else {
                    key = (ECPublicKey) keysManager.getPublicKey("EC", Hex.hexStringToBytes(keyPair.getPublicKey()));
                }
                JWSVerifier verifier = new ECDSAVerifier(key);
                if (!signedJwt.verify(verifier)) {
                    throw new IllegalArgumentException("jwt did not pass signature validation");
                }
                return signedJwt.getJWTClaimsSet().getStringClaim("data");
            } else {
                return jweObject.getPayload().toString();
            }
        }
    } catch (Exception e) {
        FPLog.e(e);
    }
    return null;
}

Example 2 with ECCKeyPair

use of com.fitpay.android.api.models.security.ECCKeyPair in project fitpay-android-sdk by fitpay.

the class StringUtils method getEncryptedString.

/**
 * Get encrypted string
 *
 * @param type            key type
 * @param decryptedString decrypted string
 * @return encrypted string
 */
public static String getEncryptedString(@KeysManager.KeyType int type, String decryptedString) {
    JWEAlgorithm alg = JWEAlgorithm.A256GCMKW;
    EncryptionMethod enc = EncryptionMethod.A256GCM;
    ECCKeyPair keyPair = KeysManager.getInstance().getPairForType(type);
    if (null == keyPair) {
        throw new IllegalStateException("No key pair available for type (type = " + type + ")");
    }
    JWEHeader.Builder jweHeaderBuilder = new JWEHeader.Builder(alg, enc).contentType("application/json").keyID(keyPair.getKeyId());
    JWEHeader header = jweHeaderBuilder.build();
    Payload payload = new Payload(decryptedString);
    JWEObject jweObject = new JWEObject(header, payload);
    try {
        JWEEncrypter encrypter = new AESEncrypter(KeysManager.getInstance().getSecretKey(type));
        jweObject.encrypt(encrypter);
    } catch (JOSEException e) {
        FPLog.e(e);
    }
    return jweObject.serialize();
}

Example 3 with ECCKeyPair

use of com.fitpay.android.api.models.security.ECCKeyPair in project fitpay-android-sdk by fitpay.

the class KeysManager method createPairForType.

public ECCKeyPair createPairForType(@KeyType int type) throws Exception {
    removePairForType(type);
    ECCKeyPair keyPair = createECCKeyPair();
    mKeysMap.put(type, keyPair);
    return keyPair;
}

Example 4 with ECCKeyPair

use of com.fitpay.android.api.models.security.ECCKeyPair in project fitpay-android-sdk by fitpay.

the class KeysManager method createECCKeyPair.

// Create the public and private keys
private ECCKeyPair createECCKeyPair() throws Exception {
    KeyPairGenerator keyGenerator = KeyPairGenerator.getInstance(ALGORITHM, SecurityProvider.getInstance().getProvider());
    keyGenerator.initialize(new ECGenParameterSpec(EC_CURVE), new SecureRandom());
    KeyPair keyPair = keyGenerator.generateKeyPair();
    ECPublicKey publicKey = (ECPublicKey) keyPair.getPublic();
    ECPrivateKey privateKey = (ECPrivateKey) keyPair.getPrivate();
    ECCKeyPair eccKeyPair = new ECCKeyPair();
    eccKeyPair.setKeyId(UUID.randomUUID().toString());
    eccKeyPair.setPrivateKey(Hex.bytesToHexString(privateKey.getEncoded()));
    eccKeyPair.setPublicKey(Hex.bytesToHexString(publicKey.getEncoded()));
    return eccKeyPair;
}

Example 5 with ECCKeyPair

use of com.fitpay.android.api.models.security.ECCKeyPair in project fitpay-android-sdk by fitpay.

the class KeysManager method getSecretKey.

public SecretKey getSecretKey(@KeyType int type) {
    ECCKeyPair keyPair = getPairForType(type);
    SecretKey secretKey = keyPair.getSecretKey();
    if (secretKey == null) {
        secretKey = createSecretKey(keyPair.getPrivateKey(), keyPair.getServerPublicKey());
        keyPair.setSecretKey(secretKey);
    }
    return secretKey;
}