gnu.crypto.sig.rsa
Class RSA
static byte[] | I2OSP(BigInteger s, int k) - Converts a multi-precision integer (MPI)
s into an
octet sequence of length k .
|
static BigInteger | decrypt(PrivateKey K, BigInteger c) - An implementation of the
RSADP algorithm.
|
static BigInteger | encrypt(PublicKey K, BigInteger m) - An implementation of the
RSAEP algorithm.
|
static BigInteger | sign(PrivateKey K, BigInteger m) - An implementation of the RSASP method: Assuming that the
designated RSA private key is a valid one, this method computes a
signature representative for a designated message
representative signed by the holder of the designated RSA private
key.
|
static BigInteger | verify(PublicKey K, BigInteger s) - An implementation of the RSAVP method: Assuming that the
designated RSA public key is a valid one, this method computes a
message representative for the designated signature
representative generated by an RSA private key, for a message
intended for the holder of the designated RSA public key.
|
I2OSP
public static final byte[] I2OSP(BigInteger s,
int k)
Converts a multi-precision integer (MPI) s
into an
octet sequence of length k
.
s
- the multi-precision integer to convert.k
- the length of the output.
- the result of the transform.
decrypt
public static final BigInteger decrypt(PrivateKey K,
BigInteger c)
An implementation of the RSADP
algorithm.
K
- the recipient's RSA private key.c
- the ciphertext representative as an MPI.
- the message representative, an MPI between
0
and
n - 1
(n
being the shared public modulus).
encrypt
public static final BigInteger encrypt(PublicKey K,
BigInteger m)
An implementation of the RSAEP
algorithm.
K
- the recipient's RSA public key.m
- the message representative as an MPI.
- the resulting MPI --an MPI between
0
and
n - 1
(n
being the public shared modulus)-- that
will eventually be padded with an appropriate framing/padding scheme.
sign
public static final BigInteger sign(PrivateKey K,
BigInteger m)
An implementation of the
RSASP method: Assuming that the
designated RSA private key is a valid one, this method computes a
signature representative for a designated
message
representative signed by the holder of the designated RSA private
key.
K
- the RSA private key.m
- the message representative: an integer between
0
and n - 1
, where n
is the RSA
modulus.
- the signature representative, an integer between
0
and n - 1
, where n
is the RSA
modulus.
verify
public static final BigInteger verify(PublicKey K,
BigInteger s)
An implementation of the RSAVP method: Assuming that the
designated RSA public key is a valid one, this method computes a
message representative for the designated signature
representative generated by an RSA private key, for a message
intended for the holder of the designated RSA public key.
K
- the RSA public key.s
- the signature representative, an integer between
0
and n - 1
, where n
is the RSA
modulus.
- a message representative: an integer between
0
and n - 1
, where n
is the RSA modulus.
Copyright © 2001, 2002, 2003
Free Software Foundation,
Inc. All Rights Reserved.