PublicKey pubKey = ecKeyFactory.generatePublic(spec); PrivateKey privKey = ecKeyFactory.generatePrivate(spec); // delete the entry from the CCA key storage area // (An exception is thrown if the CCA key storage area entry does not exist.) // ((ECPrivateHWKey)privKey).deletePKDSEntry();...
This method is not supported for hardware based private keys. java.security.interfaces.ECPrivateKey getSoftwareECPrivateKey() The preferred method for retrieving an equivalent software Elliptic Curve private key from a CLEAR hardware Elliptic Curve private key is to use the KeyFactory class. byte[...
ECPublicKeySpec publicKey =newECPublicKeySpec(ecParameterSpec.getCurve().decodePoint(data), ecParameterSpec); KeyFactory kf = KeyFactory.getInstance("ECDH","BC");return(ECPublicKey) kf.generatePublic(publicKey); } 开发者ID:martinwithaar,项目名称:Encryptor4j,代码行数:18,代码来源:ECDHExportTest....
BigIntegerprivateKeyValue=privateKey.getD(); // Ethereum does not use encoded public keys like bitcoin - see // https://en.bitcoin.it/wiki/Elliptic_Curve_Digital_Signature_Algorithm for details // Additionally, as the first bit is a constant prefix (0x04) we ignore this value byte[]publi...
security.KeyFactory; import java.security.KeyManagementException; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.PrivateKey; import java.security.UnrecoverableKeyException; import java.security.cert.Certificate; import ...
13import javax.crypto.SecretKeyFactory;14import javax.crypto.spec.DESKeySpec;15import javax.crypto.spec.SecretKeySpec;16 17import sun.misc.BASE64Decoder;18import sun.misc.BASE64Encoder;19 20/** 21 * 22 * BASE64的加密解密是双向的，可以求反解。 23 * MD5、SHA以及HMAC是单向加密，任何数据加密...
getG().multiply(privateKey.getD()); byte[] publicDerBytes = Q.getEncoded(false); ECPoint point = ecSpec.getCurve().decodePoint(publicDerBytes); ECPublicKeySpec pubSpec = new ECPublicKeySpec(point, ecSpec); return (ECPublicKey) keyFactory.generatePublic(pubSpec); } ...
KeyFactory kf = KeyFactory.getInstance("ECDSA",newBouncyCastleProvider()); ECNamedCurveSpec params =newECNamedCurveSpec(curveName, spec.getCurve(), spec.getG(), spec.getN()); ECPoint point = ECPointUtil.decodePoint(params.getCurve(), pubKey); ...
s.signum() >= 0, "s must be positive"); check(messageHash != null, "messageHash must not be null"); // 1.0 For j from 0 to h (h == recId here and the loop is outside this // function) // 1.1 Let x = r + jn BigInteger n = CURVE.getN(); // Curve order. ...
addProvider(new BouncyCastleProvider()); KeyFactory keyf = KeyFactory.getInstance("EC"); PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(Base64.decode(privateKeyPEM) ); BCECPrivateKey priKey = (BCECPrivateKey)keyf.generatePrivate(priPKCS8); return priKey.getD().toByteArray(...