net.sourceforge.jcetaglib.lib
Class Hybrid

java.lang.Object
  net.sourceforge.jcetaglib.lib.Hybrid

public class Hybrid

extends java.lang.Object

Hybrid encryption & decryption routines for use with BouncyCastle JCE provider

Version:

$Id: Hybrid.java,v 1.3 2004/04/15 07:28:25 hamgert Exp $

Author:

Gert Van Ham, hamgert@users.sourceforge.net, http://jcetaglib.sourceforge.net

Constructor Summary

Hybrid()

Method Summary

static void	decryptAndVerify(java.io.InputStream is, java.io.DataOutputStream daos, java.security.PrivateKey privKey, SignerCertificate signercert, java.lang.String signame, java.lang.String algorithm, java.lang.String mode, java.lang.String padding, int bufferlength) decrypt and verify inputstream signature (which must support mark/reset)
static java.lang.StringBuffer	decryptAndVerify(java.lang.StringBuffer text, java.security.PrivateKey privKey, SignerCertificate signercert, java.lang.String signame, java.lang.String algorithm, java.lang.String mode, java.lang.String padding) decrypt and verify text signature
static void	decryptAndVerifyHMAC(java.io.InputStream is, java.io.DataOutputStream daos, java.security.PrivateKey privKey, java.lang.String algorithm, java.lang.String mode, java.lang.String padding, int bufferlength) Decrypts and verifies an inputstream (which must support mark/reset) with HMAC
static java.lang.StringBuffer	decryptAndVerifyHMAC(java.lang.StringBuffer text, java.security.PrivateKey privKey, java.lang.String algorithm, java.lang.String mode, java.lang.String padding) Decrypts and verifies text with HMAC
static void	decryptFileAndVerify(java.lang.String file, java.lang.String newfile, java.security.PrivateKey privKey, SignerCertificate signercert, java.lang.String signame, java.lang.String algorithm, java.lang.String mode, java.lang.String padding)
static void	decryptFileAndVerifyHMAC(java.lang.String file, java.lang.String newfile, java.security.PrivateKey privKey, java.lang.String algorithm, java.lang.String mode, java.lang.String padding) Decrypts and verifies file with HMAC
static void	encryptAndSign(java.io.InputStream is, java.io.DataOutputStream daos, java.security.PublicKey receiverKey, java.security.PrivateKey signingKey, java.security.cert.X509Certificate cert, java.lang.String signame, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding, int bufferlength) Encrypt and sign any inputstream
static java.lang.StringBuffer	encryptAndSign(java.lang.StringBuffer text, java.security.PublicKey receiverKey, java.security.PrivateKey signingKey, java.security.cert.X509Certificate cert, java.lang.String signame, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding) Encrypt and sign a text
static void	encryptFileAndSign(java.lang.String file, java.lang.String newfile, java.security.PublicKey receiverKey, java.security.PrivateKey signingKey, java.security.cert.X509Certificate cert, java.lang.String signame, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding) Encrypt and sign a file
static void	encryptFileWithHMAC(java.lang.String file, java.lang.String newfile, java.security.PublicKey receiverKey, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding) Encrypts file with an HMAC
static void	encryptWithHMAC(java.io.InputStream is, java.io.DataOutputStream daos, java.security.PublicKey receiverKey, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding, int bufferlength) Encrypts any inputstream with an HMAC
static java.lang.StringBuffer	encryptWithHMAC(java.lang.StringBuffer text, java.security.PublicKey receiverKey, java.lang.String algorithm, byte[] seed, int strength, java.lang.String mode, java.lang.String padding) Encrypts text with an HMAC

Methods inherited from class java.lang.Object

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

Constructor Detail

Hybrid

public Hybrid()

Method Detail

encryptWithHMAC

public static java.lang.StringBuffer encryptWithHMAC(java.lang.StringBuffer text,
                                                     java.security.PublicKey receiverKey,
                                                     java.lang.String algorithm,
                                                     byte[] seed,
                                                     int strength,
                                                     java.lang.String mode,
                                                     java.lang.String padding)
                                              throws CryptoException

Encrypts text with an HMAC

Parameters:

text - text to encrypt

receiverKey - the receiver's public key for encrypting the symmetric key

algorithm - encryption algorithm (e.g. "Rijndael")

seed - seed for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Returns:

encrypted string in BASE64 format

Throws:

CryptoException - encryption errors

encryptFileWithHMAC

public static void encryptFileWithHMAC(java.lang.String file,
                                       java.lang.String newfile,
                                       java.security.PublicKey receiverKey,
                                       java.lang.String algorithm,
                                       byte[] seed,
                                       int strength,
                                       java.lang.String mode,
                                       java.lang.String padding)
                                throws CryptoException,
                                       java.io.IOException

Encrypts file with an HMAC

Parameters:

file - file to encrypt

newfile - encrypted file

receiverKey - the receiver's public key for encrypting the symmetric key

algorithm - encryption algorithm (e.g. "Rijndael")

seed - seed for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Throws:

CryptoException - encryption errors

java.io.IOException - I/O errors

encryptWithHMAC

public static void encryptWithHMAC(java.io.InputStream is,
                                   java.io.DataOutputStream daos,
                                   java.security.PublicKey receiverKey,
                                   java.lang.String algorithm,
                                   byte[] seed,
                                   int strength,
                                   java.lang.String mode,
                                   java.lang.String padding,
                                   int bufferlength)
                            throws CryptoException,
                                   java.io.IOException

Encrypts any inputstream with an HMAC

Parameters:

is - inputstream to encrypt

daos - outputstream to store the encrypted data

receiverKey - the receiver's public key for encrypting the symmetric key

algorithm - encryption algorithm (e.g. "Rijndael")

seed - seed for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

bufferlength - buffer length in bytes

Throws:

CryptoException - encryption errors

java.io.IOException - I/O errors

decryptAndVerifyHMAC

public static java.lang.StringBuffer decryptAndVerifyHMAC(java.lang.StringBuffer text,
                                                          java.security.PrivateKey privKey,
                                                          java.lang.String algorithm,
                                                          java.lang.String mode,
                                                          java.lang.String padding)
                                                   throws HeaderException,
                                                          InvalidHMACException,
                                                          CryptoException

Decrypts and verifies text with HMAC

Parameters:

text - the text to decrypt

privKey - the receiver's private key for decryption

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Returns:

deciphered text

Throws:

HeaderException - thrown when package header is broken

InvalidHMACException - thrown when the HMAC code is invalid

CryptoException - all encryption errors

decryptFileAndVerifyHMAC

public static void decryptFileAndVerifyHMAC(java.lang.String file,
                                            java.lang.String newfile,
                                            java.security.PrivateKey privKey,
                                            java.lang.String algorithm,
                                            java.lang.String mode,
                                            java.lang.String padding)
                                     throws CryptoException,
                                            HeaderException,
                                            InvalidHMACException,
                                            java.io.IOException

Decrypts and verifies file with HMAC

Parameters:

file - the file to decrypt

newfile - the decrypted file

privKey - the receiver's private key for decryption

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Throws:

java.io.IOException - I/O errors

HeaderException - thrown when package header is broken

InvalidHMACException - thrown when the HMAC code is invalid

CryptoException - all encryption errors

decryptAndVerifyHMAC

public static void decryptAndVerifyHMAC(java.io.InputStream is,
                                        java.io.DataOutputStream daos,
                                        java.security.PrivateKey privKey,
                                        java.lang.String algorithm,
                                        java.lang.String mode,
                                        java.lang.String padding,
                                        int bufferlength)
                                 throws java.io.IOException,
                                        HeaderException,
                                        InvalidHMACException,
                                        CryptoException

Decrypts and verifies an inputstream (which must support mark/reset) with HMAC

Parameters:

is - inputstream to decrypt (NOTE: the inputstream must support mark/reset because it must be read three times)

daos - outputstream to store the decrypted data

privKey - the receiver's private key for decryption

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

bufferlength - buffer length in bytes

Throws:

java.io.IOException - I/O errors

HeaderException - thrown when package header is broken

InvalidHMACException - thrown when the HMAC code is invalid

CryptoException - all encryption errors

encryptAndSign

public static java.lang.StringBuffer encryptAndSign(java.lang.StringBuffer text,
                                                    java.security.PublicKey receiverKey,
                                                    java.security.PrivateKey signingKey,
                                                    java.security.cert.X509Certificate cert,
                                                    java.lang.String signame,
                                                    java.lang.String algorithm,
                                                    byte[] seed,
                                                    int strength,
                                                    java.lang.String mode,
                                                    java.lang.String padding)
                                             throws CryptoException

Encrypt and sign a text

Parameters:

text - the text to encrypt and sign

receiverKey - the public key of the receiver

signingKey - the private key of the signer

cert - the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

seed - for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Returns:

ciphered and signed text

Throws:

CryptoException - encryption errors

encryptFileAndSign

public static void encryptFileAndSign(java.lang.String file,
                                      java.lang.String newfile,
                                      java.security.PublicKey receiverKey,
                                      java.security.PrivateKey signingKey,
                                      java.security.cert.X509Certificate cert,
                                      java.lang.String signame,
                                      java.lang.String algorithm,
                                      byte[] seed,
                                      int strength,
                                      java.lang.String mode,
                                      java.lang.String padding)
                               throws CryptoException,
                                      java.io.IOException

Encrypt and sign a file

Parameters:

file - file to encrypt

newfile - encrypted file

receiverKey - the public key of the receiver

signingKey - the private key of the signer

cert - the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

seed - for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Throws:

CryptoException - encryption errors

java.io.IOException - I/O errors

encryptAndSign

public static void encryptAndSign(java.io.InputStream is,
                                  java.io.DataOutputStream daos,
                                  java.security.PublicKey receiverKey,
                                  java.security.PrivateKey signingKey,
                                  java.security.cert.X509Certificate cert,
                                  java.lang.String signame,
                                  java.lang.String algorithm,
                                  byte[] seed,
                                  int strength,
                                  java.lang.String mode,
                                  java.lang.String padding,
                                  int bufferlength)
                           throws CryptoException,
                                  java.io.IOException

Encrypt and sign any inputstream

Parameters:

is - inputstream to encrypt

daos - outputstream to store the encrypted & signed data

receiverKey - the public key of the receiver

signingKey - the private key of the signer

cert - the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

seed - for SecureRandom (optional)

strength - the keysize in bits (e.g. 128)

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

bufferlength - buffer length in bytes

Throws:

CryptoException - encryption errors

java.io.IOException - I/O errors

decryptAndVerify

public static java.lang.StringBuffer decryptAndVerify(java.lang.StringBuffer text,
                                                      java.security.PrivateKey privKey,
                                                      SignerCertificate signercert,
                                                      java.lang.String signame,
                                                      java.lang.String algorithm,
                                                      java.lang.String mode,
                                                      java.lang.String padding)
                                               throws HeaderException,
                                                      InvalidSignatureException,
                                                      CryptoException

decrypt and verify text signature

Parameters:

text - the text to decrypt and verify

privKey - the private key of the receiver

signercert - returns the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Returns:

the plaintext

Throws:

HeaderException - thrown when package header is broken

InvalidSignatureException - thrown when the signature is invalid

CryptoException - all encryption errors

decryptAndVerify

public static void decryptAndVerify(java.io.InputStream is,
                                    java.io.DataOutputStream daos,
                                    java.security.PrivateKey privKey,
                                    SignerCertificate signercert,
                                    java.lang.String signame,
                                    java.lang.String algorithm,
                                    java.lang.String mode,
                                    java.lang.String padding,
                                    int bufferlength)
                             throws CryptoException,
                                    HeaderException,
                                    InvalidSignatureException,
                                    java.io.IOException

decrypt and verify inputstream signature (which must support mark/reset)

Parameters:

is - the inputstream to decrypt and verify (NOTE: the inputstream must support mark/reset because it must be read three times)

daos - the outputstream containing the deciphered data

privKey - the private key of the receiver

signercert - returns the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

bufferlength - buffer length in bytes

Throws:

java.io.IOException - I/O errors

HeaderException - thrown when package header is broken

InvalidSignatureException - thrown when the signature is invalid

CryptoException - all encryption errors

decryptFileAndVerify

public static void decryptFileAndVerify(java.lang.String file,
                                        java.lang.String newfile,
                                        java.security.PrivateKey privKey,
                                        SignerCertificate signercert,
                                        java.lang.String signame,
                                        java.lang.String algorithm,
                                        java.lang.String mode,
                                        java.lang.String padding)
                                 throws CryptoException,
                                        HeaderException,
                                        InvalidSignatureException,
                                        java.io.IOException

Parameters:

file - the file to decrypt and verify

newfile - the decrypted file

privKey - the private key of the receiver

signercert - returns the signer's certificate

signame - the signature's algorithm (e.g."MD5withRSA")

algorithm - encryption algorithm (e.g. "Rijndael")

mode - encryption mode (e.g. "CBC")

padding - padding scheme (e.g."PKCS7Padding")

Throws:

java.io.IOException - I/O errors

HeaderException - thrown when package header is broken

InvalidSignatureException - thrown when the signature is invalid

CryptoException - all encryption errors