de.bb.security
Class Pkcs6

java.lang.Object
  |
  +--de.bb.security.Pkcs6

public class Pkcs6

extends java.lang.Object

This class contains functions from Pkcs 6

Field Summary

static byte[]

rsaEncryption

Constructor Summary

Pkcs6()

Method Summary

static byte[]	createCertificate(byte[] issuer, byte[] date, byte[] owner, byte[] pubN, byte[] pubE) Create a certifcate without siganture.
static byte[]	createCertificateRequest(byte[] owner, byte[] pubN, byte[] pubE) Create a certifcate request without siganture.
static byte[]	createDate(byte[] from, byte[] to) Create a sequence containing a time intervall.
static byte[]	doRSA(byte[] z, byte[] n, byte[] e) perform an RSA encrption
static byte[]	getReqExponent(byte[] req) Get the public exponent from a X.509 certificate request
static byte[]	getReqModulo(byte[] req) Get the public modulo from a X.509 certificate request
static byte[]	getX509Exponent(byte[] cert) Get the public exponent from a X.509 certificate
static byte[]	getX509Modulo(byte[] cert) Get the public modulo from a X.509 certificate
static byte[]	makeInfo(java.lang.String fn) Create a owner / issuer info sequence from a file.
static byte[]	makeInfo(java.lang.String name, java.lang.String orgName, java.lang.String url, java.lang.String country, java.lang.String state, java.lang.String location) Create a owner / issuer info sequence from givenparameters.
static java.lang.String	searchOwner(byte[] owner) Search owners name in an owner / issuer info sequence
static byte[]	sign(byte[] sign, byte[] privN, byte[] privF, byte[] privE) Sign a given sequence with a RSA private key.

Methods inherited from class java.lang.Object

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

Field Detail

rsaEncryption

public static final byte[] rsaEncryption

Constructor Detail

Pkcs6

public Pkcs6()

Method Detail

createCertificate

public static byte[] createCertificate(byte[] issuer,
                                       byte[] date,
                                       byte[] owner,
                                       byte[] pubN,
                                       byte[] pubE)

Create a certifcate without siganture. You have to sign this later by calling sign().

Parameters:

issuer - The issuer of the certificate.

date - An time intervall when the certificate is valid.

owner - The owner ot the certificate.

pubN - owners modulo.

pubE - owners public exponent.

Returns:

A new allocated byte array containing the certificate body.

See Also:

createCertificateRequest

public static byte[] createCertificateRequest(byte[] owner,
                                              byte[] pubN,
                                              byte[] pubE)

Create a certifcate request without siganture. You have to sign this later by calling sign().

Parameters:

owner - The owner ot the certificate.

pubN - owners modulo.

pubE - owners public exponent.

Returns:

A new allocated byte array containing the certificate body.

See Also:

sign

public static byte[] sign(byte[] sign,
                          byte[] privN,
                          byte[] privF,
                          byte[] privE)

Sign a given sequence with a RSA private key. This is e.g. used for signign certificates or certificate requests. An enhanced version which uses the chinese remainder theoroem is planned .

Parameters:

sign - The data which is signed.

privN - The public modulo.

privF - The private exponent.

See Also:

createDate

public static byte[] createDate(byte[] from,
                                byte[] to)

Create a sequence containing a time intervall.

Parameters:

from - Begin of the tim intervall.

to - End of the time intervall.

Returns:

A new allocated ASN.1 sequence containing the intervall.

makeInfo

public static byte[] makeInfo(java.lang.String fn)
                       throws java.io.IOException

Create a owner / issuer info sequence from a file.

Parameters:

fn - The file name from which the input data is read.

Returns:

a New allocated ASN.1 sequence contatining the info.

See Also:

makeInfo

public static byte[] makeInfo(java.lang.String name,
                              java.lang.String orgName,
                              java.lang.String url,
                              java.lang.String country,
                              java.lang.String state,
                              java.lang.String location)

Create a owner / issuer info sequence from givenparameters.

Parameters:

fn - The file name from which the input data is read.

Returns:

A new allocated ASN.1 sequence contatining the info.

See Also:

getX509Modulo

public static byte[] getX509Modulo(byte[] cert)

Get the public modulo from a X.509 certificate

Parameters:

cert - - a X.509 certificate

Returns:

the modulo, or null on error

getX509Exponent

public static byte[] getX509Exponent(byte[] cert)

Get the public exponent from a X.509 certificate

Parameters:

cert - - a X.509 certificate

Returns:

the exponent, or null on error

getReqModulo

public static byte[] getReqModulo(byte[] req)

Get the public modulo from a X.509 certificate request

Parameters:

cert - - a X.509 certificate request

Returns:

the modulo, or null on error

getReqExponent

public static byte[] getReqExponent(byte[] req)

Get the public exponent from a X.509 certificate request

Parameters:

cert - - a X.509 certificate request

Returns:

the modulo, or null on error

searchOwner

public static java.lang.String searchOwner(byte[] owner)

Search owners name in an owner / issuer info sequence

Parameters:

owner - the input data, which is searched

Returns:

the name or null

doRSA

public static byte[] doRSA(byte[] z,
                           byte[] n,
                           byte[] e)

perform an RSA encrption

Parameters:

z - the data to encrypt/decrypt

n - the modulo

e - the exponent

Returns:

a new allocated byte array with the result of (z**e)mod n