Package org.webpki.util

Class PEMDecoder

java.lang.Object

org.webpki.util.PEMDecoder

public class PEMDecoder
extends Object

Decodes PEM files.

Method Summary

Modifier and Type	Method	Description
static X509Certificate[]	getCertificatePath(byte[] pemBlob)	Returns a java X509Certificate path.
static KeyPair	getKeyPair(byte[] pemBlob)	Returns a java KeyPair.
static KeyStore	getKeyStore(byte[] pemBlob, String alias, String password)	Returns a java KeyStore.
static PrivateKey	getPrivateKey(byte[] pemBlob)	Returns a java PrivateKey.
static PublicKey	getPublicKey(byte[] pemBlob)	Returns a java PublicKey.

Methods inherited from class java.lang.Object

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

Method Details

getKeyPair

public static KeyPair getKeyPair(byte[] pemBlob)

Returns a java KeyPair.

Note that this method presumes that there is one PRIVATE KEY present and that is in the extended PKCS #8 format that also holds the associated public key. The latter only applies to EC and OKP keys since public key is implicit for RSA private keys. However, if there is a PUBLIC KEY element as well, this takes precedence over public keys suppled in PKCS #8 extensions. ED25519 keys generated by OpenSSL seem to require such an arrangement.

Parameters:

pemBlob - PEM input

Returns:

Key pair

Throws:

CryptoException

getPrivateKey

public static PrivateKey getPrivateKey(byte[] pemBlob)

Returns a java PrivateKey.

Note that this method presumes that there is one PRIVATE KEY present and uses the PKCS #8 format.

Parameters:

pemBlob - PEM input

Returns:

Private key

Throws:

CryptoException

getPublicKey

public static PublicKey getPublicKey(byte[] pemBlob)

Returns a java PublicKey.

Note that this method presumes that there is one PUBLIC KEY present.

Parameters:

pemBlob - PEM input

Returns:

Public key

Throws:

CryptoException

getCertificatePath

public static X509Certificate[] getCertificatePath(byte[] pemBlob)

Returns a java X509Certificate path.

Note that this method presumes that there is one or more CERTIFICATE elements present. The certificates are checked for path conformance, including verifying that they are listed in the PEM file in ascending order.

Parameters:

pemBlob - PEM input

Returns:

Certficate path

Throws:

CryptoException

getKeyStore

public static KeyStore getKeyStore(byte[] pemBlob,
 String alias,
 String password)

Returns a java KeyStore.

Note that this method depends on getCertificatePath(byte[]) and getPrivateKey(byte[]).

Parameters:

pemBlob - PEM input

Returns:

Initialized KeyStore

Throws:

CryptoException