만약 내가 특정 알고리즘으로 파일을 인코딩하고, 디코딩하며 보안을 철저히 하고 싶을때..
또는 통신 알고리즘상에서 스푸핑을 방지하고 싶을때..
또는 DB 설정파일을 보안화하고 싶을때..
그냥 자바를 보면 답이 나온다.
|
import java.util.Iterator; public class PrintProviders { for (Iterator iter = providers[i].keySet().iterator(); iter System.out.println("-------------------------------------"); } |
자바에서는 Security 알고리즘이 무상하게 제공되고 있다.
위의 소스의 결과를 볼까?
| ------------------------------------- name: SUN info: SUN (DSA key/parameter generation; DSA signing; SHA-1, MD5 digests; SecureRandom; X.509 certificates; JKS keystore; PKIX CertPathValidator; PKIX CertPathBuilder; LDAP, Collection CertStores, JavaPolicy Policy; JavaLoginConfig Configuration) version: 1.6 Alg.Alias.Signature.SHA1/DSA SHA1withDSA Alg.Alias.Signature.1.2.840.10040.4.3 SHA1withDSA Alg.Alias.Signature.DSS SHA1withDSA SecureRandom.SHA1PRNG ImplementedIn Software KeyStore.JKS sun.security.provider.JavaKeyStore$JKS Alg.Alias.MessageDigest.SHA-1 SHA MessageDigest.SHA sun.security.provider.SHA KeyStore.CaseExactJKS sun.security.provider.JavaKeyStore$CaseExactJKS CertStore.com.sun.security.IndexedCollection ImplementedIn Software Alg.Alias.Signature.DSA SHA1withDSA KeyFactory.DSA ImplementedIn Software KeyStore.JKS ImplementedIn Software AlgorithmParameters.DSA ImplementedIn Software Signature.NONEwithDSA sun.security.provider.DSA$RawDSA Alg.Alias.CertificateFactory.X509 X.509 CertStore.com.sun.security.IndexedCollection sun.security.provider.certpath.IndexedCollectionCertStore Provider.id className sun.security.provider.Sun Alg.Alias.Signature.SHA-1/DSA SHA1withDSA CertificateFactory.X.509 ImplementedIn Software Signature.SHA1withDSA KeySize 1024 KeyFactory.DSA sun.security.provider.DSAKeyFactory CertPathValidator.PKIX ImplementedIn Software Configuration.JavaLoginConfig sun.security.provider.ConfigSpiFile Alg.Alias.Signature.OID.1.2.840.10040.4.3 SHA1withDSA Alg.Alias.KeyFactory.1.2.840.10040.4.1 DSA MessageDigest.MD5 ImplementedIn Software Alg.Alias.Signature.RawDSA NONEwithDSA Provider.id name SUN Alg.Alias.AlgorithmParameters.1.2.840.10040.4.1 DSA CertPathBuilder.PKIX ValidationAlgorithm RFC3280 Policy.JavaPolicy sun.security.provider.PolicySpiFile Alg.Alias.AlgorithmParameters.1.3.14.3.2.12 DSA Alg.Alias.Signature.SHA/DSA SHA1withDSA Alg.Alias.KeyPairGenerator.1.3.14.3.2.12 DSA MessageDigest.SHA-384 sun.security.provider.SHA5$SHA384 Signature.SHA1withDSA ImplementedIn Software AlgorithmParameterGenerator.DSA sun.security.provider.DSAParameterGenerator Signature.NONEwithDSA SupportedKeyClasses java.security.interfaces.DSAPublicKey|java.security.interfaces.DSAPrivateKey MessageDigest.SHA-512 sun.security.provider.SHA5$SHA512 CertPathBuilder.PKIX sun.security.provider.certpath.SunCertPathBuilder Alg.Alias.Signature.1.3.14.3.2.27 SHA1withDSA CertPathBuilder.PKIX ImplementedIn Software Provider.id version 1.6 AlgorithmParameters.DSA sun.security.provider.DSAParameters Signature.SHA1withDSA SupportedKeyClasses java.security.interfaces.DSAPublicKey|java.security.interfaces.DSAPrivateKey CertStore.Collection sun.security.provider.certpath.CollectionCertStore AlgorithmParameterGenerator.DSA ImplementedIn Software KeyPairGenerator.DSA KeySize 1024 CertStore.LDAP sun.security.provider.certpath.LDAPCertStore CertificateFactory.X.509 sun.security.provider.X509Factory CertStore.LDAP LDAPSchema RFC2587 CertStore.LDAP ImplementedIn Software KeyPairGenerator.DSA ImplementedIn Software CertPathValidator.PKIX ValidationAlgorithm RFC3280 CertStore.Collection ImplementedIn Software Alg.Alias.Signature.1.3.14.3.2.13 SHA1withDSA CertPathValidator.PKIX sun.security.provider.certpath.PKIXCertPathValidator Alg.Alias.MessageDigest.SHA1 SHA AlgorithmParameterGenerator.DSA KeySize 1024 SecureRandom.SHA1PRNG sun.security.provider.SecureRandom Signature.SHA1withDSA sun.security.provider.DSA$SHA1withDSA Alg.Alias.KeyFactory.1.3.14.3.2.12 DSA KeyPairGenerator.DSA sun.security.provider.DSAKeyPairGenerator MessageDigest.SHA ImplementedIn Software Provider.id info SUN (DSA key/parameter generation; DSA signing; SHA-1, MD5 digests; SecureRandom; X.509 certificates; JKS keystore; PKIX CertPathValidator; PKIX CertPathBuilder; LDAP, Collection CertStores, JavaPolicy Policy; JavaLoginConfig Configuration) Alg.Alias.KeyPairGenerator.1.2.840.10040.4.1 DSA Alg.Alias.Signature.SHAwithDSA SHA1withDSA MessageDigest.MD5 sun.security.provider.MD5 Alg.Alias.Signature.DSAWithSHA1 SHA1withDSA MessageDigest.SHA-256 sun.security.provider.SHA2 Alg.Alias.KeyPairGenerator.OID.1.2.840.10040.4.1 DSA MessageDigest.MD2 sun.security.provider.MD2 ------------------------------------- ------------------------------------- name: SunRsaSign info: Sun RSA signature provider version: 1.5 Alg.Alias.Signature.OID.1.2.840.113549.1.1.4 MD5withRSA Alg.Alias.Signature.OID.1.2.840.113549.1.1.2 MD2withRSA Alg.Alias.KeyFactory.1.2.840.113549.1.1 RSA Signature.SHA512withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Provider.id version 1.5 Signature.MD5withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Alg.Alias.Signature.1.2.840.113549.1.1.13 SHA512withRSA KeyPairGenerator.RSA sun.security.rsa.RSAKeyPairGenerator Alg.Alias.Signature.1.2.840.113549.1.1.12 SHA384withRSA Alg.Alias.Signature.1.2.840.113549.1.1.11 SHA256withRSA KeyFactory.RSA sun.security.rsa.RSAKeyFactory Alg.Alias.Signature.1.3.14.3.2.29 SHA1withRSA Alg.Alias.KeyPairGenerator.OID.1.2.840.113549.1.1 RSA Signature.MD2withRSA sun.security.rsa.RSASignature$MD2withRSA Signature.SHA384withRSA sun.security.rsa.RSASignature$SHA384withRSA Signature.MD5withRSA sun.security.rsa.RSASignature$MD5withRSA Provider.id info Sun RSA signature provider Signature.SHA1withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Signature.SHA1withRSA sun.security.rsa.RSASignature$SHA1withRSA Alg.Alias.Signature.1.2.840.113549.1.1.5 SHA1withRSA Signature.SHA256withRSA sun.security.rsa.RSASignature$SHA256withRSA Alg.Alias.Signature.1.2.840.113549.1.1.4 MD5withRSA Provider.id className sun.security.rsa.SunRsaSign Alg.Alias.Signature.OID.1.2.840.113549.1.1.13 SHA512withRSA Alg.Alias.Signature.OID.1.2.840.113549.1.1.12 SHA384withRSA Alg.Alias.Signature.1.2.840.113549.1.1.2 MD2withRSA Alg.Alias.Signature.OID.1.2.840.113549.1.1.11 SHA256withRSA Signature.MD2withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Provider.id name SunRsaSign Alg.Alias.KeyFactory.OID.1.2.840.113549.1.1 RSA Signature.SHA384withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Signature.SHA512withRSA sun.security.rsa.RSASignature$SHA512withRSA Signature.SHA256withRSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey Alg.Alias.Signature.OID.1.2.840.113549.1.1.5 SHA1withRSA Alg.Alias.KeyPairGenerator.1.2.840.113549.1.1 RSA ------------------------------------- ------------------------------------- name: SunJSSE info: Sun JSSE provider(PKCS12, SunX509 key/trust factories, SSLv3, TLSv1) version: 1.6 Alg.Alias.Signature.OID.1.2.840.113549.1.1.4 MD5withRSA Alg.Alias.KeyFactory.1.2.840.113549.1.1 RSA Alg.Alias.Signature.OID.1.2.840.113549.1.1.2 MD2withRSA SSLContext.Default com.sun.net.ssl.internal.ssl.DefaultSSLContextImpl Provider.id version 1.6 TrustManagerFactory.SunX509 com.sun.net.ssl.internal.ssl.TrustManagerFactoryImpl$SimpleFactory KeyManagerFactory.NewSunX509 com.sun.net.ssl.internal.ssl.KeyManagerFactoryImpl$X509 KeyPairGenerator.RSA sun.security.rsa.RSAKeyPairGenerator KeyStore.PKCS12 com.sun.net.ssl.internal.pkcs12.PKCS12KeyStore SSLContext.SSLv3 com.sun.net.ssl.internal.ssl.SSLContextImpl KeyFactory.RSA sun.security.rsa.RSAKeyFactory Alg.Alias.Signature.1.3.14.3.2.29 SHA1withRSA Alg.Alias.TrustManagerFactory.X509 PKIX Alg.Alias.KeyPairGenerator.OID.1.2.840.113549.1.1 RSA Signature.MD5andSHA1withRSA com.sun.net.ssl.internal.ssl.RSASignature Signature.MD2withRSA sun.security.rsa.RSASignature$MD2withRSA Signature.MD5withRSA sun.security.rsa.RSASignature$MD5withRSA Provider.id info Sun JSSE provider(PKCS12, SunX509 key/trust factories, SSLv3, TLSv1) Signature.SHA1withRSA sun.security.rsa.RSASignature$SHA1withRSA Alg.Alias.Signature.1.2.840.113549.1.1.5 SHA1withRSA Alg.Alias.Signature.1.2.840.113549.1.1.4 MD5withRSA Provider.id className com.sun.net.ssl.internal.ssl.Provider Alg.Alias.Signature.OID.1.3.14.3.2.29 SHA1withRSA Alg.Alias.Signature.1.2.840.113549.1.1.2 MD2withRSA Provider.id name SunJSSE SSLContext.SSL com.sun.net.ssl.internal.ssl.SSLContextImpl SSLContext.TLS com.sun.net.ssl.internal.ssl.SSLContextImpl TrustManagerFactory.PKIX com.sun.net.ssl.internal.ssl.TrustManagerFactoryImpl$PKIXFactory SSLContext.TLSv1 com.sun.net.ssl.internal.ssl.SSLContextImpl Alg.Alias.KeyFactory.OID.1.2.840.113549.1.1 RSA KeyManagerFactory.SunX509 com.sun.net.ssl.internal.ssl.KeyManagerFactoryImpl$SunX509 Alg.Alias.TrustManagerFactory.SunPKIX PKIX Alg.Alias.TrustManagerFactory.X.509 PKIX Alg.Alias.Signature.OID.1.2.840.113549.1.1.5 SHA1withRSA Alg.Alias.KeyPairGenerator.1.2.840.113549.1.1 RSA ------------------------------------- ------------------------------------- name: SunJCE info: SunJCE Provider (implements RSA, DES, Triple DES, AES, Blowfish, ARCFOUR, RC2, PBE, Diffie-Hellman, HMAC) version: 1.6 Cipher.Blowfish SupportedKeyFormats RAW AlgorithmParameters.DESede com.sun.crypto.provider.DESedeParameters AlgorithmParameters.DES com.sun.crypto.provider.DESParameters Cipher.DES SupportedPaddings NOPADDING|PKCS5PADDING|ISO10126PADDING AlgorithmParameters.Blowfish com.sun.crypto.provider.BlowfishParameters Cipher.DESedeWrap SupportedKeyFormats RAW Alg.Alias.KeyAgreement.1.2.840.113549.1.3.1 DiffieHellman AlgorithmParameterGenerator.DiffieHellman com.sun.crypto.provider.DHParameterGenerator Cipher.RSA SupportedPaddings NOPADDING|PKCS1PADDING|OAEPWITHMD5ANDMGF1PADDING|OAEPWITHSHA1ANDMGF1PADDING|OAEPWITHSHA-1ANDMGF1PADDING|OAEPWITHSHA-256ANDMGF1PADDING|OAEPWITHSHA-384ANDMGF1PADDING|OAEPWITHSHA-512ANDMGF1PADDING Alg.Alias.Cipher.TripleDES DESede Cipher.ARCFOUR SupportedModes ECB Mac.SslMacSHA1 SupportedKeyFormats RAW KeyGenerator.DES com.sun.crypto.provider.DESKeyGenerator Provider.id version 1.6 KeyGenerator.DESede com.sun.crypto.provider.DESedeKeyGenerator Alg.Alias.SecretKeyFactory.PBE PBEWithMD5AndDES Alg.Alias.KeyFactory.1.2.840.113549.1.3.1 DiffieHellman Mac.HmacSHA1 com.sun.crypto.provider.HmacSHA1 Cipher.PBEWithMD5AndDES com.sun.crypto.provider.PBEWithMD5AndDESCipher Cipher.AES SupportedModes ECB|CBC|PCBC|CTR|CTS|CFB|OFB|CFB8|CFB16|CFB24|CFB32|CFB40|CFB48|CFB56|CFB64|OFB8|OFB16|OFB24|OFB32|OFB40|OFB48|OFB56|OFB64|CFB72|CFB80|CFB88|CFB96|CFB104|CFB112|CFB120|CFB128|OFB72|OFB80|OFB88|OFB96|OFB104|OFB112|OFB120|OFB128 Cipher.AESWrap SupportedModes ECB SecretKeyFactory.DESede com.sun.crypto.provider.DESedeKeyFactory KeyGenerator.SunTlsKeyMaterial com.sun.crypto.provider.TlsKeyMaterialGenerator AlgorithmParameters.OAEP com.sun.crypto.provider.OAEPParameters Cipher.AES SupportedKeyFormats RAW AlgorithmParameters.RC2 com.sun.crypto.provider.RC2Parameters AlgorithmParameters.PBE com.sun.crypto.provider.PBEParameters Alg.Alias.KeyPairGenerator.DH DiffieHellman Alg.Alias.KeyAgreement.OID.1.2.840.113549.1.3.1 DiffieHellman Cipher.AES com.sun.crypto.provider.AESCipher KeyGenerator.RC2 com.sun.crypto.provider.KeyGeneratorCore$RC2KeyGenerator Mac.HmacSHA512 com.sun.crypto.provider.HmacCore$HmacSHA512 Provider.id info SunJCE Provider (implements RSA, DES, Triple DES, AES, Blowfish, ARCFOUR, RC2, PBE, Diffie-Hellman, HMAC) Cipher.AES SupportedPaddings NOPADDING|PKCS5PADDING|ISO10126PADDING Alg.Alias.AlgorithmParameters.OID.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 Cipher.Blowfish SupportedPaddings NOPADDING|PKCS5PADDING|ISO10126PADDING Alg.Alias.AlgorithmParameters.OID.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede KeyStore.JCEKS com.sun.crypto.provider.JceKeyStore Cipher.Blowfish SupportedModes ECB|CBC|PCBC|CTR|CTS|CFB|OFB|CFB8|CFB16|CFB24|CFB32|CFB40|CFB48|CFB56|CFB64|OFB8|OFB16|OFB24|OFB32|OFB40|OFB48|OFB56|OFB64 Alg.Alias.SecretKeyFactory.1.2.840.113549.1.5.12 PBKDF2WithHmacSHA1 Mac.HmacSHA384 SupportedKeyFormats RAW Cipher.DESedeWrap com.sun.crypto.provider.DESedeWrapCipher Cipher.ARCFOUR SupportedPaddings NOPADDING Alg.Alias.KeyPairGenerator.1.2.840.113549.1.3.1 DiffieHellman Cipher.PBEWithMD5AndTripleDES com.sun.crypto.provider.PBEWithMD5AndTripleDESCipher Alg.Alias.Cipher.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 Alg.Alias.Cipher.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede Mac.HmacSHA256 SupportedKeyFormats RAW Alg.Alias.AlgorithmParameterGenerator.1.2.840.113549.1.3.1 DiffieHellman Cipher.PBEWithSHA1AndDESede com.sun.crypto.provider.PKCS12PBECipherCore$PBEWithSHA1AndDESede SecretKeyFactory.PBEWithMD5AndDES com.sun.crypto.provider.PBEKeyFactory$PBEWithMD5AndDES KeyPairGenerator.DiffieHellman com.sun.crypto.provider.DHKeyPairGenerator Cipher.RC2 SupportedModes ECB|CBC|PCBC|CTR|CTS|CFB|OFB|CFB8|CFB16|CFB24|CFB32|CFB40|CFB48|CFB56|CFB64|OFB8|OFB16|OFB24|OFB32|OFB40|OFB48|OFB56|OFB64 Alg.Alias.AlgorithmParameters.Rijndael AES KeyAgreement.DiffieHellman SupportedKeyClasses javax.crypto.interfaces.DHPublicKey|javax.crypto.interfaces.DHPrivateKey Mac.HmacMD5 SupportedKeyFormats RAW KeyGenerator.SunTlsRsaPremasterSecret com.sun.crypto.provider.TlsRsaPremasterSecretGenerator Cipher.AESWrap SupportedKeyFormats RAW SecretKeyFactory.DES com.sun.crypto.provider.DESKeyFactory Cipher.AESWrap SupportedPaddings NOPADDING Provider.id name SunJCE KeyGenerator.HmacSHA512 com.sun.crypto.provider.KeyGeneratorCore$HmacSHA512KG Mac.HmacSHA256 com.sun.crypto.provider.HmacCore$HmacSHA256 Cipher.ARCFOUR SupportedKeyFormats RAW Cipher.DES SupportedModes ECB|CBC|PCBC|CTR|CTS|CFB|OFB|CFB8|CFB16|CFB24|CFB32|CFB40|CFB48|CFB56|CFB64|OFB8|OFB16|OFB24|OFB32|OFB40|OFB48|OFB56|OFB64 Cipher.RSA SupportedKeyClasses java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey SecretKeyFactory.PBEWithMD5AndTripleDES com.sun.crypto.provider.PBEKeyFactory$PBEWithMD5AndTripleDES Cipher.PBEWithSHA1AndRC2_40 com.sun.crypto.provider.PKCS12PBECipherCore$PBEWithSHA1AndRC2_40 AlgorithmParameters.DiffieHellman com.sun.crypto.provider.DHParameters Mac.HmacMD5 com.sun.crypto.provider.HmacMD5 Cipher.RSA com.sun.crypto.provider.RSACipher Mac.SslMacMD5 com.sun.crypto.provider.SslMacCore$SslMacMD5 Alg.Alias.AlgorithmParameters.OID.1.2.840.113549.1.5.3 PBEWithMD5AndDES Cipher.DESede SupportedPaddings NOPADDING|PKCS5PADDING|ISO10126PADDING Alg.Alias.AlgorithmParameterGenerator.OID.1.2.840.113549.1.3.1 DiffieHellman Cipher.DESede com.sun.crypto.provider.DESedeCipher Alg.Alias.AlgorithmParameters.OID.1.2.840.113549.1.3.1 DiffieHellman Alg.Alias.AlgorithmParameters.1.2.840.113549.1.5.3 PBEWithMD5AndDES Mac.HmacSHA512 SupportedKeyFormats RAW Mac.HmacPBESHA1 SupportedKeyFormats RAW Alg.Alias.AlgorithmParameterGenerator.DH DiffieHellman Cipher.DESedeWrap SupportedPaddings NOPADDING Alg.Alias.SecretKeyFactory.OID.1.2.840.113549.1.5.12 PBKDF2WithHmacSHA1 Alg.Alias.AlgorithmParameters.1.2.840.113549.1.3.1 DiffieHellman Mac.HmacPBESHA1 com.sun.crypto.provider.HmacPKCS12PBESHA1 Cipher.DES SupportedKeyFormats RAW AlgorithmParameters.PBEWithMD5AndTripleDES com.sun.crypto.provider.PBEParameters Cipher.DESedeWrap SupportedModes CBC Alg.Alias.KeyFactory.OID.1.2.840.113549.1.3.1 DiffieHellman Alg.Alias.Cipher.OID.1.2.840.113549.1.5.3 PBEWithMD5AndDES AlgorithmParameters.AES com.sun.crypto.provider.AESParameters Alg.Alias.AlgorithmParameters.TripleDES DESede Alg.Alias.SecretKeyFactory.TripleDES DESede KeyGenerator.HmacSHA256 com.sun.crypto.provider.KeyGeneratorCore$HmacSHA256KG Alg.Alias.KeyGenerator.TripleDES DESede Alg.Alias.AlgorithmParameters.DH DiffieHellman KeyGenerator.AES com.sun.crypto.provider.AESKeyGenerator Cipher.RC2 SupportedPaddings NOPADDING|PKCS5PADDING|ISO10126PADDING Alg.Alias.Cipher.RC4 ARCFOUR Alg.Alias.KeyPairGenerator.OID.1.2.840.113549.1.3.1 DiffieHellman Mac.HmacSHA384 com.sun.crypto.provider.HmacCore$HmacSHA384 SecretKeyFactory.PBKDF2WithHmacSHA1 com.sun.crypto.provider.PBKDF2HmacSHA1Factory Provider.id className com.sun.crypto.provider.SunJCE Cipher.DES com.sun.crypto.provider.DESCipher Cipher.Blowfish com.sun.crypto.provider.BlowfishCipher KeyGenerator.SunTlsMasterSecret com.sun.crypto.provider.TlsMasterSecretGenerator KeyGenerator.HmacSHA1 com.sun.crypto.provider.HmacSHA1KeyGenerator Alg.Alias.SecretKeyFactory.1.2.840.113549.1.5.3 PBEWithMD5AndDES KeyGenerator.SunTlsPrf com.sun.crypto.provider.TlsPrfGenerator SecretKeyFactory.PBEWithSHA1AndDESede com.sun.crypto.provider.PBEKeyFactory$PBEWithSHA1AndDESede KeyGenerator.ARCFOUR com.sun.crypto.provider.KeyGeneratorCore$ARCFOURKeyGenerator Alg.Alias.KeyAgreement.DH DiffieHellman Alg.Alias.KeyGenerator.Rijndael AES AlgorithmParameters.PBEWithSHA1AndDESede com.sun.crypto.provider.PBEParameters Alg.Alias.KeyGenerator.RC4 ARCFOUR Alg.Alias.Cipher.OID.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 Alg.Alias.Cipher.OID.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede Mac.SslMacMD5 SupportedKeyFormats RAW Mac.HmacSHA1 SupportedKeyFormats RAW Cipher.DESede SupportedKeyFormats RAW Cipher.RC2 com.sun.crypto.provider.RC2Cipher SecretKeyFactory.PBEWithSHA1AndRC2_40 com.sun.crypto.provider.PBEKeyFactory$PBEWithSHA1AndRC2_40 KeyGenerator.HmacMD5 com.sun.crypto.provider.HmacMD5KeyGenerator AlgorithmParameters.PBEWithSHA1AndRC2_40 com.sun.crypto.provider.PBEParameters KeyGenerator.HmacSHA384 com.sun.crypto.provider.KeyGeneratorCore$HmacSHA384KG Alg.Alias.AlgorithmParameters.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 KeyFactory.DiffieHellman com.sun.crypto.provider.DHKeyFactory Alg.Alias.AlgorithmParameters.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede AlgorithmParameters.PBEWithMD5AndDES com.sun.crypto.provider.PBEParameters Alg.Alias.SecretKeyFactory.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 Alg.Alias.SecretKeyFactory.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede Cipher.AESWrap com.sun.crypto.provider.AESWrapCipher Alg.Alias.SecretKeyFactory.OID.1.2.840.113549.1.5.3 PBEWithMD5AndDES Alg.Alias.Cipher.Rijndael AES Cipher.RSA SupportedModes ECB Cipher.DESede SupportedModes ECB|CBC|PCBC|CTR|CTS|CFB|OFB|CFB8|CFB16|CFB24|CFB32|CFB40|CFB48|CFB56|CFB64|OFB8|OFB16|OFB24|OFB32|OFB40|OFB48|OFB56|OFB64 Alg.Alias.SecretKeyFactory.OID.1.2.840.113549.1.12.1.6 PBEWithSHA1AndRC2_40 Alg.Alias.SecretKeyFactory.OID.1.2.840.113549.1.12.1.3 PBEWithSHA1AndDESede Cipher.ARCFOUR com.sun.crypto.provider.ARCFOURCipher Alg.Alias.Cipher.1.2.840.113549.1.5.3 PBEWithMD5AndDES Mac.SslMacSHA1 com.sun.crypto.provider.SslMacCore$SslMacSHA1 KeyAgreement.DiffieHellman com.sun.crypto.provider.DHKeyAgreement Cipher.RC2 SupportedKeyFormats RAW Alg.Alias.KeyFactory.DH DiffieHellman KeyGenerator.Blowfish com.sun.crypto.provider.BlowfishKeyGenerator ------------------------------------- ------------------------------------- name: SunJGSS info: Sun (Kerberos v5, SPNEGO) version: 1.0 GssApiMechanism.1.3.6.1.5.5.2 sun.security.jgss.spnego.SpNegoMechFactory Provider.id info Sun (Kerberos v5, SPNEGO) Provider.id className sun.security.jgss.SunProvider Provider.id version 1.0 GssApiMechanism.1.2.840.113554.1.2.2 sun.security.jgss.krb5.Krb5MechFactory Provider.id name SunJGSS ------------------------------------- ------------------------------------- name: SunSASL info: Sun SASL provider(implements client mechanisms for: DIGEST-MD5, GSSAPI, EXTERNAL, PLAIN, CRAM-MD5; server mechanisms for: DIGEST-MD5, GSSAPI, CRAM-MD5) version: 1.5 Provider.id className com.sun.security.sasl.Provider SaslClientFactory.CRAM-MD5 com.sun.security.sasl.ClientFactoryImpl Provider.id version 1.5 SaslClientFactory.EXTERNAL com.sun.security.sasl.ClientFactoryImpl SaslClientFactory.DIGEST-MD5 com.sun.security.sasl.digest.FactoryImpl SaslClientFactory.PLAIN com.sun.security.sasl.ClientFactoryImpl Provider.id name SunSASL SaslClientFactory.GSSAPI com.sun.security.sasl.gsskerb.FactoryImpl SaslServerFactory.DIGEST-MD5 com.sun.security.sasl.digest.FactoryImpl SaslServerFactory.CRAM-MD5 com.sun.security.sasl.ServerFactoryImpl SaslServerFactory.GSSAPI com.sun.security.sasl.gsskerb.FactoryImpl Provider.id info Sun SASL provider(implements client mechanisms for: DIGEST-MD5, GSSAPI, EXTERNAL, PLAIN, CRAM-MD5; server mechanisms for: DIGEST-MD5, GSSAPI, CRAM-MD5) ------------------------------------- ------------------------------------- name: XMLDSig info: XMLDSig (DOM XMLSignatureFactory; DOM KeyInfoFactory) version: 1.0 Alg.Alias.TransformService.XPATH http://www.w3.org/TR/1999/REC-xpath-19991116 TransformService.http://www.w3.org/TR/1999/REC-xslt-19991116 MechanismType DOM Provider.id version 1.0 Alg.Alias.TransformService.INCLUSIVE http://www.w3.org/TR/2001/REC-xml-c14n-20010315 TransformService.http://www.w3.org/2000/09/xmldsig#base64 MechanismType DOM Alg.Alias.TransformService.EXCLUSIVE http://www.w3.org/2001/10/xml-exc-c14n# KeyInfoFactory.DOM org.jcp.xml.dsig.internal.dom.DOMKeyInfoFactory TransformService.http://www.w3.org/2001/10/xml-exc-c14n#WithComments org.jcp.xml.dsig.internal.dom.DOMExcC14NMethod Alg.Alias.TransformService.INCLUSIVE_WITH_COMMENTS http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments TransformService.http://www.w3.org/2002/06/xmldsig-filter2 MechanismType DOM TransformService.http://www.w3.org/TR/1999/REC-xpath-19991116 MechanismType DOM TransformService.http://www.w3.org/2001/10/xml-exc-c14n# org.jcp.xml.dsig.internal.dom.DOMExcC14NMethod XMLSignatureFactory.DOM org.jcp.xml.dsig.internal.dom.DOMXMLSignatureFactory Alg.Alias.TransformService.XPATH2 http://www.w3.org/2002/06/xmldsig-filter2 TransformService.http://www.w3.org/2001/10/xml-exc-c14n# MechanismType DOM TransformService.http://www.w3.org/2001/10/xml-exc-c14n#WithComments MechanismType DOM TransformService.http://www.w3.org/TR/1999/REC-xslt-19991116 org.jcp.xml.dsig.internal.dom.DOMXSLTTransform TransformService.http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments org.jcp.xml.dsig.internal.dom.DOMCanonicalXMLC14NMethod Alg.Alias.TransformService.BASE64 http://www.w3.org/2000/09/xmldsig#base64 Alg.Alias.TransformService.ENVELOPED http://www.w3.org/2000/09/xmldsig#enveloped-signature Provider.id info XMLDSig (DOM XMLSignatureFactory; DOM KeyInfoFactory) TransformService.http://www.w3.org/TR/2001/REC-xml-c14n-20010315 org.jcp.xml.dsig.internal.dom.DOMCanonicalXMLC14NMethod Provider.id className org.jcp.xml.dsig.internal.dom.XMLDSigRI Alg.Alias.TransformService.EXCLUSIVE_WITH_COMMENTS http://www.w3.org/2001/10/xml-exc-c14n#WithComments TransformService.http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments MechanismType DOM TransformService.http://www.w3.org/2002/06/xmldsig-filter2 org.jcp.xml.dsig.internal.dom.DOMXPathFilter2Transform TransformService.http://www.w3.org/2000/09/xmldsig#enveloped-signature org.jcp.xml.dsig.internal.dom.DOMEnvelopedTransform Provider.id name XMLDSig TransformService.http://www.w3.org/2000/09/xmldsig#base64 org.jcp.xml.dsig.internal.dom.DOMBase64Transform TransformService.http://www.w3.org/TR/1999/REC-xpath-19991116 org.jcp.xml.dsig.internal.dom.DOMXPathTransform TransformService.http://www.w3.org/TR/2001/REC-xml-c14n-20010315 MechanismType DOM Alg.Alias.TransformService.XSLT http://www.w3.org/TR/1999/REC-xslt-19991116 TransformService.http://www.w3.org/2000/09/xmldsig#enveloped-signature MechanismType DOM ------------------------------------- ------------------------------------- name: SunPCSC info: Sun PC/SC provider version: 1.6 Provider.id info Sun PC/SC provider Provider.id className sun.security.smartcardio.SunPCSC Provider.id version 1.6 Provider.id name SunPCSC TerminalFactory.PC/SC sun.security.smartcardio.SunPCSC$Factory ------------------------------------- ------------------------------------- name: SunMSCAPI info: Sun's Microsoft Crypto API provider version: 1.6 SecureRandom.Windows-PRNG sun.security.mscapi.PRNG Provider.id version 1.6 Cipher.RSA/ECB/PKCS1Padding sun.security.mscapi.RSACipher Signature.MD5withRSA SupportedKeyClasses sun.security.mscapi.Key KeyPairGenerator.RSA sun.security.mscapi.RSAKeyPairGenerator KeyStore.Windows-ROOT sun.security.mscapi.KeyStore$ROOT Signature.NONEwithRSA SupportedKeyClasses sun.security.mscapi.Key Cipher.RSA SupportedKeyClasses sun.security.mscapi.Key Signature.MD2withRSA sun.security.mscapi.RSASignature$MD2 Signature.MD5withRSA sun.security.mscapi.RSASignature$MD5 Cipher.RSA SupportedModes ECB Provider.id info Sun's Microsoft Crypto API provider Signature.SHA1withRSA SupportedKeyClasses sun.security.mscapi.Key Signature.SHA1withRSA sun.security.mscapi.RSASignature$SHA1 Provider.id className sun.security.mscapi.SunMSCAPI KeyPairGenerator.RSA KeySize 1024 Signature.MD2withRSA SupportedKeyClasses sun.security.mscapi.Key Provider.id name SunMSCAPI Cipher.RSA SupportedPaddings PKCS1PADDING Cipher.RSA sun.security.mscapi.RSACipher KeyStore.Windows-MY sun.security.mscapi.KeyStore$MY ------------------------------------- |
이렇게 많ㅇ이 사용될 수 있는 알고리즘 구현방식이 있다.
아래 URL의 샘플 코드를 봐보자.
http://java.sun.com/developer/technicalArticles/Security/AES/AES_v1.html
| import java.security.*; import javax.crypto.*; import javax.crypto.spec.*; import java.io.*; /** * This program generates a AES key, retrieves its raw bytes, and * then reinstantiates a AES key from the key bytes. * The reinstantiated key is used to initialize a AES cipher for * encryption and decryption. */ public class AES { /** * Turns array of bytes into string * * @param buf Array of bytes to convert to hex string * @return Generated hex string */ public static String asHex (byte buf[]) { StringBuffer strbuf = new StringBuffer(buf.length * 2); int i; for (i = 0; i < buf.length; i++) { if (((int) buf[i] & 0xff) < 0x10) strbuf.append("0"); strbuf.append(Long.toString((int) buf[i] & 0xff, 16)); } return strbuf.toString(); } public static void main(String[] args) throws Exception { String message="This is just an example"; // Get the KeyGenerator KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128); // 192 and 256 bits may not be available // Generate the secret key specs. SecretKey skey = kgen.generateKey(); byte[] raw = skey.getEncoded(); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); // Instantiate the cipher Cipher cipher = Cipher.getInstance("AES"); cipher.init(Cipher.ENCRYPT_MODE, skeySpec); byte[] encrypted = cipher.doFinal((args.length == 0 ? "This is just an example" : args[0]).getBytes()); System.out.println("encrypted string: " + asHex(encrypted)); cipher.init(Cipher.DECRYPT_MODE, skeySpec); byte[] original = cipher.doFinal(encrypted); String originalString = new String(original); System.out.println("Original string: " + originalString + " " + asHex(original)); } } |
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