gnu.crypto.key.srp6
Class SRPKeyPairRawCodec
public
class
SRPKeyPairRawCodec
extends Object
implements IKeyPairCodec
An object that implements the IKeyPairCodec operations for the
Raw format to use with SRP keypairs.
Reference:
- SRP Protocol Design
Thomas J. Wu.
Version: $Revision: 1.2 $
Method Summary |
PrivateKey | decodePrivateKey(byte[] k) |
PublicKey | decodePublicKey(byte[] k) |
byte[] | encodePrivateKey(PrivateKey key)
Returns the encoded form of the designated SRP private key according to
the Raw format supported by this library.
The Raw format for an SRP private key, in this implementation,
is a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
MAGIC_RAW_SRP_PRIVATE_KEY,
-
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the SRP parameter
N in internet order,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
N ,
- 4-byte count of following bytes representing the SRP parameter
g ,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
g ,
- 4-byte count of following bytes representing the SRP parameter
x ,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
x ,
- one byte which indicates whether the SRP parameter
v
is included in this encoding (value 0x01 ) or not
(value 0x00 ).
- 4-byte count of following bytes representing the SRP parameter
v ,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
v ,
|
byte[] | encodePublicKey(PublicKey key)
Returns the encoded form of the designated SRP public key according to
the Raw format supported by this library.
The Raw format for an SRP public key, in this implementation, is
a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
MAGIC_RAW_SRP_PUBLIC_KEY,
-
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the SRP parameter
N in internet order,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
N ,
- 4-byte count of following bytes representing the SRP parameter
g ,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
g ,
- 4-byte count of following bytes representing the SRP parameter
y ,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray() method on the SRP parameter
y ,
|
int | getFormatID() |
public PrivateKey decodePrivateKey(byte[] k)
public PublicKey decodePublicKey(byte[] k)
public byte[] encodePrivateKey(PrivateKey key)
Returns the encoded form of the designated SRP private key according to
the Raw format supported by this library.
The Raw format for an SRP private key, in this implementation,
is a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
MAGIC_RAW_SRP_PRIVATE_KEY,
-
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the SRP parameter
N
in internet order,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
N
,
- 4-byte count of following bytes representing the SRP parameter
g
,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
g
,
- 4-byte count of following bytes representing the SRP parameter
x
,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
x
,
- one byte which indicates whether the SRP parameter
v
is included in this encoding (value 0x01
) or not
(value 0x00
).
- 4-byte count of following bytes representing the SRP parameter
v
,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
v
,
Parameters: key the key to encode.
Returns: the Raw format encoding of the designated key.
Throws: IllegalArgumentException if the designated key is not an SRP one.
public byte[] encodePublicKey(PublicKey key)
Returns the encoded form of the designated SRP public key according to
the Raw format supported by this library.
The Raw format for an SRP public key, in this implementation, is
a byte sequence consisting of the following:
- 4-byte magic consisting of the value of the literal
MAGIC_RAW_SRP_PUBLIC_KEY,
-
- 1-byte version consisting of the constant: 0x01,
- 4-byte count of following bytes representing the SRP parameter
N
in internet order,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
N
,
- 4-byte count of following bytes representing the SRP parameter
g
,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
g
,
- 4-byte count of following bytes representing the SRP parameter
y
,
- n-bytes representation of a BigInteger obtained by invoking
the
toByteArray()
method on the SRP parameter
y
,
Parameters: key the key to encode.
Returns: the Raw format encoding of the designated key.
Throws: IllegalArgumentException if the designated key is not an SRP one.
public int getFormatID()