org.hyperledger.fabric.sdk.idemix

Class WeakBB

java.lang.Object

org.hyperledger.fabric.sdk.idemix.WeakBB

public class WeakBB
extends Object

WeakBB contains the functions to use Weak Boneh-Boyen signatures (https://ia.cr/2004/171)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WeakBB.KeyPair WeakBB.KeyPair represents a key pair for weak Boneh-Boyen signatures

Method Summary

Modifier and Type	Method and Description
static WeakBB.KeyPair	weakBBKeyGen() Generate a new key-pair set
static org.apache.milagro.amcl.FP256BN.ECP	weakBBSign(org.apache.milagro.amcl.FP256BN.BIG sk, org.apache.milagro.amcl.FP256BN.BIG m) Produces a WBB signature for a give message
static boolean	weakBBVerify(org.apache.milagro.amcl.FP256BN.ECP2 pk, org.apache.milagro.amcl.FP256BN.ECP sig, org.apache.milagro.amcl.FP256BN.BIG m) Verify a WBB signature for a certain message

Methods inherited from class java.lang.Object

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

Method Detail

weakBBKeyGen

public static WeakBB.KeyPair weakBBKeyGen()

Generate a new key-pair set

Returns:

a freshly generated key pair

weakBBSign

public static org.apache.milagro.amcl.FP256BN.ECP weakBBSign(org.apache.milagro.amcl.FP256BN.BIG sk,
                                                             org.apache.milagro.amcl.FP256BN.BIG m)

Produces a WBB signature for a give message

Parameters:

sk - Secret key

m - Message

Returns:

Signature

weakBBVerify

public static boolean weakBBVerify(org.apache.milagro.amcl.FP256BN.ECP2 pk,
                                   org.apache.milagro.amcl.FP256BN.ECP sig,
                                   org.apache.milagro.amcl.FP256BN.BIG m)

Verify a WBB signature for a certain message

Parameters:

pk - Public key

sig - Signature

m - Message

Returns:

True iff valid