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java.lang.Object | +--com.ibm.security12.sun.security.x509.CertAndKeyGen
Generate a pair of keys, and provide access to them. This class is provided primarily for ease of use.
This provides some simple certificate management functionality. Specifically, it allows you to create self-signed X.509 certificates as well as PKCS 10 based certificate signing requests.
Keys for some public key signature algorithms have algorithm parameters, such as DSS/DSA. Some sites' Certificate Authorities adopt fixed algorithm parameters, which speeds up some operations including key generation and signing. At this time, this interface does not provide a way to provide such algorithm parameters, e.g. by providing the CA certificate which includes those parameters.
Also, note that at this time only signature-capable keys may be acquired through this interface. Diffie-Hellman keys, used for secure key exchange, may be supported later.
PKCS10
,
X509CertImpl
Constructor Summary | |
CertAndKeyGen(String keyType,
String sigAlg)
Creates a CertAndKeyGen object for a particular key type and signature algorithm. |
Method Summary | |
void |
generate(int keyBits)
Generates a random public/private key pair, with a given key size. |
PKCS10 |
getCertRequest(X500Name myname)
Returns a PKCS #10 certificate request. |
PrivateKey |
getPrivateKey()
Returns the private key of the generated key pair. |
X509Key |
getPublicKey()
Returns the public key of the generated key pair if it is of type X509Key , or null if the public key is of a different type. |
sun.security.x509.X509Cert |
getSelfCert(X500Name myname,
long validity)
Deprecated. Use the new |
X509Certificate |
getSelfCertificate(X500Name myname,
long validity)
Returns a self-signed X.509v3 certificate for the public key. |
void |
setRandom(SecureRandom generator)
Sets the source of random numbers used when generating keys. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
public CertAndKeyGen(String keyType, String sigAlg) throws NoSuchAlgorithmException
keyType
- type of key, e.g. "RSA", "DSA"sigAlg
- name of the signature algorithm, e.g. "MD5WithRSA",
"MD2WithRSA", "SHAwithDSA".Method Detail |
public void setRandom(SecureRandom generator)
public void generate(int keyBits) throws InvalidKeyException
Note that not all values of "keyBits" are valid for all algorithms, and not all public key algorithms are currently supported for use in X.509 certificates. If the algorithm you specified does not produce X.509 compatible keys, an invalid key exception is thrown.
keyBits
- the number of bits in the keys.public X509Key getPublicKey()
X509Key
, or null if the public key is of a different type.
XXX Note: This behaviour is needed for backwards compatibility.
What this method really should return is the public key of the
generated key pair, regardless of whether or not it is an instance of
X509Key
. Accordingly, the return type of this method
should be PublicKey
.public PrivateKey getPrivateKey()
Be extremely careful when handling private keys. When private keys are not kept secret, they lose their ability to securely authenticate specific entities ... that is a huge security risk!
public sun.security.x509.X509Cert getSelfCert(X500Name myname, long validity) throws InvalidKeyException, SignatureException, NoSuchAlgorithmException
Such certificates normally are used to identify a "Certificate Authority" (CA). Accordingly, they will not always be accepted by other parties. However, such certificates are also useful when you are bootstrapping your security infrastructure, or deploying system prototypes.
myname
- X.500 name of the subject (who is also the issuer)validity
- how long the certificate should be valid, in secondspublic X509Certificate getSelfCertificate(X500Name myname, long validity) throws CertificateException, InvalidKeyException, SignatureException, NoSuchAlgorithmException, NoSuchProviderException
Such certificates normally are used to identify a "Certificate Authority" (CA). Accordingly, they will not always be accepted by other parties. However, such certificates are also useful when you are bootstrapping your security infrastructure, or deploying system prototypes.
myname
- X.500 name of the subject (who is also the issuer)validity
- how long the certificate should be valid, in secondspublic PKCS10 getCertRequest(X500Name myname) throws InvalidKeyException, SignatureException
PKCS10.print
or PKCS10.toByteArray
operations on the result, to get the request in an appropriate
transmission format.
PKCS #10 certificate requests are sent, along with some proof of identity, to Certificate Authorities (CAs) which then issue X.509 public key certificates.
myname
- X.500 name of the subject
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