spongycastle

来源： https://stackoverflow.com/questions/31435160/how-to-construct-privatekey-if-you-know-the-curve-name-raw-private-key-point

来源： https://stackoverflow.com/questions/31435160/how-to-construct-privatekey-if-you-know-the-curve-name-raw-private-key-point

来源： https://stackoverflow.com/questions/31435160/how-to-construct-privatekey-if-you-know-the-curve-name-raw-private-key-point

来源： https://stackoverflow.com/questions/31435160/how-to-construct-privatekey-if-you-know-the-curve-name-raw-private-key-point

问题 in an Android project I need to authenticate my app for an https connection. Using the following method I'm trying to decrypt my private key, provided by the server developers in a .pem file. I use SpongyCastle , and at the top of the same class where the methods are I already changed the security provider like this: static { Security.insertProviderAt(new org.spongycastle.jce.provider.BouncyCastleProvider(), 1); } In this case my object is an instance of PKCS8EncryptedPrivateKeyInfo . This is

问题 in an Android project I need to authenticate my app for an https connection. Using the following method I'm trying to decrypt my private key, provided by the server developers in a .pem file. I use SpongyCastle , and at the top of the same class where the methods are I already changed the security provider like this: static { Security.insertProviderAt(new org.spongycastle.jce.provider.BouncyCastleProvider(), 1); } In this case my object is an instance of PKCS8EncryptedPrivateKeyInfo . This is

问题 I am trying to generate ECDSA key pair using SpongyCastle in Android. This is the code: static { Security.insertProviderAt(new org.spongycastle.jce.provider.BouncyCastleProvider(), 1); } public static KeyPair generate() { ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("prime256v1"); KeyPairGenerator generator = KeyPairGenerator.getInstance("ECDSA", "SC"); generator.initialize(ecSpec, new SecureRandom()); KeyPair keyPair = g.generateKeyPair(); Log.i(TAG, "EC Pub Key generated: " +

问题 I have two PublicKey object.I want to compare both for equality or to check which is latest object using java security API or bouncy castle API.How can i achieve this? 回答1: You can use equals if (!key.equals(copyKey)){ System.out.println("not equals!"); } or check the hashcode of the keys if (key.hashCode() != copyKey.hashCode()) { System.out.println("public key hashCode check failed"); } or compare the hex string of the two public keys String encodedKey1 = new String(Hex.encode(key1

问题 I understand this is something which is not so difficult but very unfortunately I am stuck here and fighting it since yesterday, I have followed this Mutual Authentication in Android tutorial, to place a keystore in resources and trying to connect to my server over SSL, but getting the following exception java.lang.RuntimeException: org.spongycastle.jcajce.provider.asymmetric.x509.CertificateFactory$ExCertificateException I have placed my sslapptruststore.pfx file under res/raw

问题 I am using spongycastle in my android code. code is working fine in android 5 and android 6 but in android 4 its showing the error : java.lang.NoClassDefFoundError: org.spongycastle.util.io.pem.PemReader Its failing at the time of initialization of PemReader in the below code : private PublicKey getPublicKey(AssetManager manager, String keyPath) { PublicKey key = null; try { final KeyFactory keyFactory = KeyFactory.getInstance(TicketVerifier.ENCRYPTION_ALGORITHM); InputStream stream = manager