Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.crypto.agreement.srp.SRP6Util

Modifier and Type	Field and Description
private static BigInteger	ONE
private static BigInteger	ZERO

Access	Constructor and Description
public	SRP6Util()

Method Summary

Modifier and Type	Method and Description
public static BigInteger	calculateK(Digest digest, BigInteger N, BigInteger g)
public static BigInteger	Returns: the final Key value. calculateKey(Digest The Digest used as the hashing function H digest, BigInteger Modulus used to get the pad length N, BigInteger The secret calculated by both sides S) Computes the final Key according to the standard routine: Key = H(S)
public static BigInteger	Returns: M1 The calculated client evidence message calculateM1(Digest The Digest used as the hashing function H digest, BigInteger Modulus used to get the pad length N, BigInteger The public client value A, BigInteger The public server value B, BigInteger The secret calculated by both sides S) Computes the client evidence message (M1) according to the standard routine: M1 = H( A \| B \| S )
public static BigInteger	Returns: M2 The calculated server evidence message calculateM2(Digest The Digest used as the hashing function H digest, BigInteger Modulus used to get the pad length N, BigInteger The public client value A, BigInteger The client evidence message M1, BigInteger The secret calculated by both sides S) Computes the server evidence message (M2) according to the standard routine: M2 = H( A \| M1 \| S )
public static BigInteger	calculateU(Digest digest, BigInteger N, BigInteger A, BigInteger B)
public static BigInteger	calculateX(Digest digest, BigInteger N, byte[] salt, byte[] identity, byte[] password)
public static BigInteger	generatePrivateValue(Digest digest, BigInteger N, BigInteger g, SecureRandom random)
private static byte[]	getPadded(BigInteger n, int length)
private static BigInteger	hashPaddedPair(Digest digest, BigInteger N, BigInteger n1, BigInteger n2)
private static BigInteger	hashPaddedTriplet(Digest digest, BigInteger N, BigInteger n1, BigInteger n2, BigInteger n3)
public static BigInteger	validatePublicValue(BigInteger N, BigInteger val)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

ONE	back to summary
private static BigInteger ONE

ZERO	back to summary
private static BigInteger ZERO

SRP6Util	back to summary
public SRP6Util()

Method Detail

calculateK	back to summary
public static BigInteger calculateK(Digest digest, BigInteger N, BigInteger g)

calculateKey	back to summary
public static BigInteger calculateKey(Digest digest, BigInteger N, BigInteger S) Computes the final Key according to the standard routine: Key = H(S) Parameters digest:Digest The Digest used as the hashing function H N:BigInteger Modulus used to get the pad length S:BigInteger The secret calculated by both sides Returns:BigInteger the final Key value.

calculateKey

back to summary

public static BigInteger calculateKey(Digest digest, BigInteger N, BigInteger S)

Computes the final Key according to the standard routine: Key = H(S)

Parameters

digest:Digest: The Digest used as the hashing function H
N:BigInteger: Modulus used to get the pad length
S:BigInteger: The secret calculated by both sides

Returns:BigInteger

the final Key value.

calculateM1	back to summary
public static BigInteger calculateM1(Digest digest, BigInteger N, BigInteger A, BigInteger B, BigInteger S) Computes the client evidence message (M1) according to the standard routine: M1 = H( A \| B \| S ) Parameters digest:Digest The Digest used as the hashing function H N:BigInteger Modulus used to get the pad length A:BigInteger The public client value B:BigInteger The public server value S:BigInteger The secret calculated by both sides Returns:BigInteger M1 The calculated client evidence message

calculateM1

back to summary

public static BigInteger calculateM1(Digest digest, BigInteger N, BigInteger A, BigInteger B, BigInteger S)

Computes the client evidence message (M1) according to the standard routine: M1 = H( A | B | S )

Parameters

digest:Digest: The Digest used as the hashing function H
N:BigInteger: Modulus used to get the pad length
A:BigInteger: The public client value
B:BigInteger: The public server value
S:BigInteger: The secret calculated by both sides

Returns:BigInteger

M1 The calculated client evidence message

calculateM2	back to summary
public static BigInteger calculateM2(Digest digest, BigInteger N, BigInteger A, BigInteger M1, BigInteger S) Computes the server evidence message (M2) according to the standard routine: M2 = H( A \| M1 \| S ) Parameters digest:Digest The Digest used as the hashing function H N:BigInteger Modulus used to get the pad length A:BigInteger The public client value M1:BigInteger The client evidence message S:BigInteger The secret calculated by both sides Returns:BigInteger M2 The calculated server evidence message

calculateM2

back to summary

public static BigInteger calculateM2(Digest digest, BigInteger N, BigInteger A, BigInteger M1, BigInteger S)

Computes the server evidence message (M2) according to the standard routine: M2 = H( A | M1 | S )

Parameters

digest:Digest: The Digest used as the hashing function H
N:BigInteger: Modulus used to get the pad length
A:BigInteger: The public client value
M1:BigInteger: The client evidence message
S:BigInteger: The secret calculated by both sides

Returns:BigInteger

M2 The calculated server evidence message

calculateU	back to summary
public static BigInteger calculateU(Digest digest, BigInteger N, BigInteger A, BigInteger B)

calculateX	back to summary
public static BigInteger calculateX(Digest digest, BigInteger N, byte[] salt, byte[] identity, byte[] password)

generatePrivateValue	back to summary
public static BigInteger generatePrivateValue(Digest digest, BigInteger N, BigInteger g, SecureRandom random)

getPadded	back to summary
private static byte[] getPadded(BigInteger n, int length)

hashPaddedPair	back to summary
private static BigInteger hashPaddedPair(Digest digest, BigInteger N, BigInteger n1, BigInteger n2)

hashPaddedTriplet	back to summary
private static BigInteger hashPaddedTriplet(Digest digest, BigInteger N, BigInteger n1, BigInteger n2, BigInteger n3)

validatePublicValue	back to summary
public static BigInteger validatePublicValue(BigInteger N, BigInteger val) throws CryptoException

public Class SRP6Util

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail