gnu.crypto.key.rsa
Class RSAKeyPairRawCodec
java.lang.Object
gnu.crypto.key.rsa.RSAKeyPairRawCodec
- IKeyPairCodec
public class RSAKeyPairRawCodec
extends java.lang.Object
An object that implements the
IKeyPairCodec
interface for the
Raw format to use with RSA keypairs.
Version:
PrivateKey | decodePrivateKey(byte[] k) - Decodes an instance of an external private key into its native Java
representation.
|
PublicKey | decodePublicKey(byte[] k) - Decodes an instance of an external public key into its native Java
representation.
|
byte[] | encodePrivateKey(PrivateKey key) - Returns the encoded form of the designated RSA private key according to
the Raw format supported by this library.
The Raw format for an RSA private key, in this implementation,
is a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
Registry.MAGIC_RAW_RSA_PRIVATE_KEY , -
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the RSA parameter
p (the first prime factor of the modulus) in internet
order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter p ,
- 4-byte count of following bytes representing the RSA parameter
q (the second prime factor of the modulus) in internet
order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter q ,
- 4-byte count of following bytes representing the RSA parameter
e (the public exponent) in internet order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter e ,
- 4-byte count of following bytes representing the RSA parameter
d (the private exponent) in internet order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter d ,
|
byte[] | encodePublicKey(PublicKey key) - Returns the encoded form of the designated RSA public key according to
the Raw format supported by this library.
The Raw format for an RSA public key, in this implementation, is
a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
Registry.MAGIC_RAW_RSA_PUBLIC_KEY , -
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the RSA parameter
n (the modulus) in internet order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter n ,
- 4-byte count of following bytes representing the RSA parameter
e (the public exponent) in internet order,
- n-bytes representation of a
BigInteger obtained by invoking
the toByteArray() method on the RSA parameter e .
|
int | getFormatID() - Returns the unique identifier (within this library) of the format used
to externalise public and private keys.
|
decodePrivateKey
public PrivateKey decodePrivateKey(byte[] k)
Decodes an instance of an external private key into its native Java
representation.
- decodePrivateKey in interface IKeyPairCodec
- a concrete instance of a private key, reconstructed from the
designated input.
decodePublicKey
public PublicKey decodePublicKey(byte[] k)
Decodes an instance of an external public key into its native Java
representation.
- decodePublicKey in interface IKeyPairCodec
- a concrete instance of a public key, reconstructed from the
designated input.
encodePrivateKey
public byte[] encodePrivateKey(PrivateKey key)
Returns the encoded form of the designated RSA private key according to
the
Raw format supported by this library.
The
Raw format for an RSA private key, in this implementation,
is a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
Registry.MAGIC_RAW_RSA_PRIVATE_KEY
, -
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the RSA parameter
p
(the first prime factor of the modulus) in internet
order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter p
,
- 4-byte count of following bytes representing the RSA parameter
q
(the second prime factor of the modulus) in internet
order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter q
,
- 4-byte count of following bytes representing the RSA parameter
e
(the public exponent) in internet order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter e
,
- 4-byte count of following bytes representing the RSA parameter
d
(the private exponent) in internet order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter d
,
- encodePrivateKey in interface IKeyPairCodec
key
- the key to encode.
- the Raw format encoding of the designated key.
encodePublicKey
public byte[] encodePublicKey(PublicKey key)
Returns the encoded form of the designated RSA public key according to
the
Raw format supported by this library.
The
Raw format for an RSA public key, in this implementation, is
a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
Registry.MAGIC_RAW_RSA_PUBLIC_KEY
, -
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the RSA parameter
n
(the modulus) in internet order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter n
,
- 4-byte count of following bytes representing the RSA parameter
e
(the public exponent) in internet order,
- n-bytes representation of a
BigInteger
obtained by invoking
the toByteArray()
method on the RSA parameter e
.
- encodePublicKey in interface IKeyPairCodec
key
- the key to encode.
- the Raw format encoding of the designated key.
getFormatID
public int getFormatID()
Returns the unique identifier (within this library) of the format used
to externalise public and private keys.
- getFormatID in interface IKeyPairCodec
- the identifier of the format, the object supports.
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Free Software Foundation,
Inc. All Rights Reserved.