cn.t.util.security.message

Class AlgorithmUtil

java.lang.Object

cn.t.util.security.message.AlgorithmUtil

public class AlgorithmUtil
extends Object

Constructor Summary

Constructors

Constructor and Description
AlgorithmUtil()

Method Summary

Modifier and Type	Method and Description
static byte[]	decrypt(Cipher cipher, Key key, AlgorithmParameterSpec algorithmParameterSpec, byte[] content) decrypt data
static byte[]	decrypt(Cipher cipher, Key key, byte[] content) decrypt data
static byte[]	encrypt(Cipher cipher, Key key, AlgorithmParameterSpec algorithmParameterSpec, byte[] content) encrypt data
static byte[]	encrypt(Cipher cipher, Key key, byte[] content) encrypt data
static AlgorithmParameterGenerator	generateAlgorithmParameterGenerator(String algorithm)
static AlgorithmParameters	generateAlgorithmParameters(String algorithm, int length)
static AlgorithmParameterSpec	generateAlgorithmParameterSpec(String algorithm, int length, Class<? extends AlgorithmParameterSpec> type)
static KeyFactory	generateKeyFactory(String algorithm)
static KeyGenerator	generateKeyGenerator(String algorithm) generate key generator
static KeyGenerator	generateKeyGenerator(String algorithm, int length) generate key generator
static KeyGenerator	generateKeyGenerator(String algorithm, int length, String provider) generate key generator
static KeyPair	generateKeyPair(String algorithm, AlgorithmParameterSpec params)
static KeyPair	generateKeyPair(String algorithm, AlgorithmParameterSpec params, SecureRandom secureRandom)
static KeyPair	generateKeyPair(String algorithm, int length)
static KeyPairGenerator	generateKeyPairGenerator(String algorithm, AlgorithmParameterSpec params)
static KeyPairGenerator	generateKeyPairGenerator(String algorithm, AlgorithmParameterSpec params, SecureRandom secureRandom)
static KeyPairGenerator	generateKeyPairGenerator(String algorithm, int length)
static Mac	generateMac(String algorithm, Key secretKey)
static Signature	generateReceiverSignature(String algorithm, PublicKey publicKey)
static Key	generateSecretKey(String algorithm) secret key generator
static Key	generateSecretKey(String algorithm, int length) secret key generator
static Key	generateSecretKey(String algorithm, int length, String provider) secret key generator
static byte[]	generateSecretKeyEncodedBytes(String algorithm) generate secret key encoded bytes
static byte[]	generateSecretKeyEncodedBytes(String algorithm, int length) generate secret key encoded bytes
static byte[]	generateSecretKeyEncodedBytes(String algorithm, int length, String provider) generate secret key encoded bytes
static byte[]	generateSeedBytes(int length) 生成随机种子
static Signature	generateSenderSignature(String algorithm, PrivateKey privateKey)
static byte[]	signData(String algorithm, PrivateKey privateKey, byte[] content)
static boolean	verifySign(String algorithm, PublicKey publicKey, byte[] content, byte[] sign)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlgorithmUtil

public AlgorithmUtil()

Method Detail

generateKeyGenerator

public static KeyGenerator generateKeyGenerator(String algorithm,
                                                int length,
                                                String provider)
                                         throws NoSuchAlgorithmException,
                                                NoSuchProviderException

generate key generator

Parameters:

algorithm - 算法

length - 密钥长度

provider - 算法提供商

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateKeyGenerator

public static KeyGenerator generateKeyGenerator(String algorithm,
                                                int length)
                                         throws NoSuchAlgorithmException,
                                                NoSuchProviderException

generate key generator

Parameters:

algorithm - 算法

length - 密钥长度

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateKeyGenerator

public static KeyGenerator generateKeyGenerator(String algorithm)
                                         throws NoSuchAlgorithmException,
                                                NoSuchProviderException

generate key generator

Parameters:

algorithm - 算法

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateSecretKey

public static Key generateSecretKey(String algorithm,
                                    int length,
                                    String provider)
                             throws NoSuchAlgorithmException,
                                    NoSuchProviderException

secret key generator

Parameters:

algorithm - 算法

length - 密钥长度

provider - 算法提供商

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateSecretKey

public static Key generateSecretKey(String algorithm,
                                    int length)
                             throws NoSuchAlgorithmException,
                                    NoSuchProviderException

secret key generator

Parameters:

algorithm - 算法

length - 密钥长度

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateSecretKey

public static Key generateSecretKey(String algorithm)
                             throws NoSuchAlgorithmException,
                                    NoSuchProviderException

secret key generator

Parameters:

algorithm - 算法

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateKeyPairGenerator

public static KeyPairGenerator generateKeyPairGenerator(String algorithm,
                                                        int length)
                                                 throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

generateKeyPairGenerator

public static KeyPairGenerator generateKeyPairGenerator(String algorithm,
                                                        AlgorithmParameterSpec params,
                                                        SecureRandom secureRandom)
                                                 throws NoSuchAlgorithmException,
                                                        InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

InvalidAlgorithmParameterException

generateKeyPairGenerator

public static KeyPairGenerator generateKeyPairGenerator(String algorithm,
                                                        AlgorithmParameterSpec params)
                                                 throws NoSuchAlgorithmException,
                                                        InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

InvalidAlgorithmParameterException

generateKeyPair

public static KeyPair generateKeyPair(String algorithm,
                                      int length)
                               throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

generateKeyPair

public static KeyPair generateKeyPair(String algorithm,
                                      AlgorithmParameterSpec params,
                                      SecureRandom secureRandom)
                               throws NoSuchAlgorithmException,
                                      InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

InvalidAlgorithmParameterException

generateKeyPair

public static KeyPair generateKeyPair(String algorithm,
                                      AlgorithmParameterSpec params)
                               throws NoSuchAlgorithmException,
                                      InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

InvalidAlgorithmParameterException

generateKeyFactory

public static KeyFactory generateKeyFactory(String algorithm)
                                     throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

generateSecretKeyEncodedBytes

public static byte[] generateSecretKeyEncodedBytes(String algorithm,
                                                   int length,
                                                   String provider)
                                            throws NoSuchAlgorithmException,
                                                   NoSuchProviderException

generate secret key encoded bytes

Parameters:

algorithm - 算法

length - 密钥长度

provider - 算法提供商

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateSecretKeyEncodedBytes

public static byte[] generateSecretKeyEncodedBytes(String algorithm,
                                                   int length)
                                            throws NoSuchAlgorithmException,
                                                   NoSuchProviderException

generate secret key encoded bytes

Parameters:

algorithm - 算法

length - 密钥长度

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

generateSecretKeyEncodedBytes

public static byte[] generateSecretKeyEncodedBytes(String algorithm)
                                            throws NoSuchAlgorithmException,
                                                   NoSuchProviderException

generate secret key encoded bytes

Parameters:

algorithm - 算法

Returns:

xxx

Throws:

NoSuchAlgorithmException - xxx

NoSuchProviderException - xxx

encrypt

public static byte[] encrypt(Cipher cipher,
                             Key key,
                             AlgorithmParameterSpec algorithmParameterSpec,
                             byte[] content)
                      throws InvalidKeyException,
                             BadPaddingException,
                             IllegalBlockSizeException,
                             InvalidAlgorithmParameterException

encrypt data

Parameters:

cipher - cipher

key - key

algorithmParameterSpec - 算法参数

content - 要加密的内容

Returns:

xxx

Throws:

InvalidKeyException - xxx

BadPaddingException - xxx

IllegalBlockSizeException - xxx

InvalidAlgorithmParameterException - xxx

encrypt

public static byte[] encrypt(Cipher cipher,
                             Key key,
                             byte[] content)
                      throws InvalidKeyException,
                             BadPaddingException,
                             IllegalBlockSizeException,
                             InvalidAlgorithmParameterException

encrypt data

Parameters:

cipher - cipher

key - key

content - 要加密的内容

Returns:

xxx

Throws:

InvalidKeyException - xxx

BadPaddingException - xxx

IllegalBlockSizeException - xxx

InvalidAlgorithmParameterException - xxx

decrypt

public static byte[] decrypt(Cipher cipher,
                             Key key,
                             AlgorithmParameterSpec algorithmParameterSpec,
                             byte[] content)
                      throws InvalidKeyException,
                             BadPaddingException,
                             IllegalBlockSizeException,
                             InvalidAlgorithmParameterException

decrypt data

Parameters:

cipher - cipher

key - key

algorithmParameterSpec - xxx

content - 要解密的内容

Returns:

xxx

Throws:

InvalidKeyException - xxx

BadPaddingException - xxx

IllegalBlockSizeException - xxx

InvalidAlgorithmParameterException - xxx

decrypt

public static byte[] decrypt(Cipher cipher,
                             Key key,
                             byte[] content)
                      throws InvalidKeyException,
                             BadPaddingException,
                             IllegalBlockSizeException,
                             InvalidAlgorithmParameterException

decrypt data

Parameters:

cipher - cipher

key - key

content - 要解密的内容

Returns:

xxx

Throws:

InvalidKeyException - xxx

BadPaddingException - xxx

IllegalBlockSizeException - xxx

InvalidAlgorithmParameterException - xxx

generateAlgorithmParameterGenerator

public static AlgorithmParameterGenerator generateAlgorithmParameterGenerator(String algorithm)
                                                                       throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

generateAlgorithmParameters

public static AlgorithmParameters generateAlgorithmParameters(String algorithm,
                                                              int length)
                                                       throws NoSuchAlgorithmException

Throws:

NoSuchAlgorithmException

generateAlgorithmParameterSpec

public static AlgorithmParameterSpec generateAlgorithmParameterSpec(String algorithm,
                                                                    int length,
                                                                    Class<? extends AlgorithmParameterSpec> type)
                                                             throws NoSuchAlgorithmException,
                                                                    InvalidParameterSpecException

Throws:

NoSuchAlgorithmException

InvalidParameterSpecException

generateSeedBytes

public static byte[] generateSeedBytes(int length)

生成随机种子

Parameters:

length - xxx

Returns:

xxx

generateMac

public static Mac generateMac(String algorithm,
                              Key secretKey)
                       throws NoSuchAlgorithmException,
                              InvalidKeyException

Throws:

NoSuchAlgorithmException

InvalidKeyException

generateSenderSignature

public static Signature generateSenderSignature(String algorithm,
                                                PrivateKey privateKey)
                                         throws NoSuchAlgorithmException,
                                                InvalidKeyException

Throws:

NoSuchAlgorithmException

InvalidKeyException

signData

public static byte[] signData(String algorithm,
                              PrivateKey privateKey,
                              byte[] content)
                       throws InvalidKeyException,
                              NoSuchAlgorithmException,
                              SignatureException

Throws:

InvalidKeyException

NoSuchAlgorithmException

SignatureException

generateReceiverSignature

public static Signature generateReceiverSignature(String algorithm,
                                                  PublicKey publicKey)
                                           throws NoSuchAlgorithmException,
                                                  InvalidKeyException

Throws:

NoSuchAlgorithmException

InvalidKeyException

verifySign

public static boolean verifySign(String algorithm,
                                 PublicKey publicKey,
                                 byte[] content,
                                 byte[] sign)
                          throws InvalidKeyException,
                                 NoSuchAlgorithmException,
                                 SignatureException

Throws:

InvalidKeyException

NoSuchAlgorithmException

SignatureException