*@throwsNoSuchAlgorithmException * */publicstaticHashMap<String, Object>getKeys()throwsNoSuchAlgorithmException { HashMap<String, Object> map =newHashMap<String, Object>();KeyPairGeneratorkeyPairGen=KeyPairGenerator.getInstance("RSA"); keyPairGen.initialize(1024);KeyPairkeyPair=keyPairGen.generateKey...
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM_AES_PCKS1PADDING); cipher.init(Cipher.DECRYPT_MODE, KeyFactory.getInstance(KEY_ALGORITHM_AES).generatePrivate(newPKCS8EncodedKeySpec(privateKey))); returndoFinal(cipher, encryptedData, encryptedData.length,false); } publicstaticbyte[] sign(byte[] data,...
问如何在Java中对大数据进行RSA加密和解密ENJava密码对象允许我们检索块大小，并使用它执行重复类型的加密...
AI代码解释 importjava.io.UnsupportedEncodingException;importjava.security.KeyFactory;importjava.security.KeyPair;importjava.security.KeyPairGenerator;importjava.security.NoSuchAlgorithmException;importjava.security.SecureRandom;importjava.security.interfaces.RSAPrivateKey;importjava.security.interfaces.RSAPublicKey;imp...
{/*** 非对称密钥算法*/private static final String RSA_ALGORITHM = "RSA";/*** 密钥长度,DH算法的默认密钥长度是1024* 密钥长度必须是64的倍数,在512到65536位之间*/private static final int KEY_SIZE = 2048;/*** 公钥*/private static final String PUBLIC_KEY = "javaBoy";/*** 私钥*/private...
digestAlgorithm AlgorithmIdentifier, digest OCTET STRING } 1. 2. 3. 4. 翻译成C语言的话,就是下面段数据T的数据组织(OID指的具体HASH算法的id,oid_size表示这个id的长度) p = T *p++ = ASN1_SEQUENCE | ASN1_CONSTRUCTED; *p++ = (unsigned char) ( 0x08 + oid_size + hashlen ); ...
System.out.println(cipher.getAlgorithm()); cipher.init(Cipher.WRAP_MODE,publicKey); byte[] wrappedKey=cipher.wrap(key); DataOutputStream out=newDataOutputStream(newFileOutputStream(args[2])); out.writeInt(wrappedKey.length); out.write(wrappedKey); ...
at sun.security.rsa.RSAKeyFactory.engineGeneratePublic(RSAKeyFactory.java:159) ... 3 more 问题补充:我的代码如下: public class RSAUtil { public static final String KEY_ALGORITHM = "RSA"; public static final String SIGNATURE_ALGORITHM = "MD5withRSA"; private static final String PUBLIC_KE...
{/*** 加密算法RSA*/public static final String KEY_ALGORITHM = "RSA";private static final int MAX_ENCRYPT_BLOCK = 117;private static final int MAX_DECRYPT_BLOCK = 128;/*** method will close inputSteam** @param pemFileInputStream* @return*/public static PublicKey loadPublicKey(InputStream...
RSA_Util.java文件依赖RSA_PEM.java,封装了加密、解密、签名、验证、秘钥导入导出操作。 静态属性和方法 StringRSAPadding_Enc(String padding):将加密填充方式转换成对应的Algorithm字符串,比如PKCS1 -> RSA/ECB/PKCS1Padding。 StringRSAPadding_Sign(String hash):将签名填充方式转换成对应的Algorithm字符串,比如PKCS...