org.xipki.security.util

Class SignerUtil

java.lang.Object

org.xipki.security.util.SignerUtil

public class SignerUtil
extends Object

utility class for converting java.security RSA objects into their org.bouncycastle.crypto counterparts.

Since:

2.0.0

Author:

Lijun Liao

Method Summary

Modifier and Type	Method and Description
static org.bouncycastle.crypto.signers.PSSSigner	createPSSRSASigner(org.bouncycastle.asn1.x509.AlgorithmIdentifier sigAlgId)
static org.bouncycastle.crypto.signers.PSSSigner	createPSSRSASigner(org.bouncycastle.asn1.x509.AlgorithmIdentifier sigAlgId, org.bouncycastle.crypto.AsymmetricBlockCipher cipher)
static byte[]	dsaSigPlainToX962(byte[] signature)
static byte[]	dsaSigToPlain(BigInteger sigR, BigInteger sigS, int keyBitLen)
static byte[]	dsaSigX962ToPlain(byte[] x962Signature, int keyBitLen)
static byte[]	EMSA_PKCS1_v1_5_encoding(byte[] encodedDigestInfo, int modulusBigLength)
static byte[]	EMSA_PKCS1_v1_5_encoding(byte[] hashValue, int modulusBigLength, HashAlgo hashAlgo)
static byte[]	EMSA_PSS_ENCODE(HashAlgo contentDigest, byte[] hashValue, HashAlgo mgfDigest, int saltLen, int modulusBitLength, SecureRandom random)
static org.bouncycastle.crypto.params.RSAKeyParameters	generateRSAPrivateKeyParameter(RSAPrivateKey key)
static byte[]	getDigestPkcsPrefix(HashAlgo hashAlgo)

Methods inherited from class java.lang.Object

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

Method Detail

generateRSAPrivateKeyParameter

public static org.bouncycastle.crypto.params.RSAKeyParameters generateRSAPrivateKeyParameter(RSAPrivateKey key)

createPSSRSASigner

public static org.bouncycastle.crypto.signers.PSSSigner createPSSRSASigner(org.bouncycastle.asn1.x509.AlgorithmIdentifier sigAlgId)
                                                                    throws XiSecurityException

Throws:

XiSecurityException

createPSSRSASigner

public static org.bouncycastle.crypto.signers.PSSSigner createPSSRSASigner(org.bouncycastle.asn1.x509.AlgorithmIdentifier sigAlgId,
                                                                           org.bouncycastle.crypto.AsymmetricBlockCipher cipher)
                                                                    throws XiSecurityException

Throws:

XiSecurityException

EMSA_PKCS1_v1_5_encoding

public static byte[] EMSA_PKCS1_v1_5_encoding(byte[] hashValue,
                                              int modulusBigLength,
                                              HashAlgo hashAlgo)
                                       throws XiSecurityException

Throws:

XiSecurityException

EMSA_PKCS1_v1_5_encoding

public static byte[] EMSA_PKCS1_v1_5_encoding(byte[] encodedDigestInfo,
                                              int modulusBigLength)
                                       throws XiSecurityException

Throws:

XiSecurityException

EMSA_PSS_ENCODE

public static byte[] EMSA_PSS_ENCODE(HashAlgo contentDigest,
                                     byte[] hashValue,
                                     HashAlgo mgfDigest,
                                     int saltLen,
                                     int modulusBitLength,
                                     SecureRandom random)
                              throws XiSecurityException

Throws:

XiSecurityException

dsaSigPlainToX962

public static byte[] dsaSigPlainToX962(byte[] signature)
                                throws XiSecurityException

Throws:

XiSecurityException

dsaSigX962ToPlain

public static byte[] dsaSigX962ToPlain(byte[] x962Signature,
                                       int keyBitLen)
                                throws XiSecurityException

Throws:

XiSecurityException

dsaSigToPlain

public static byte[] dsaSigToPlain(BigInteger sigR,
                                   BigInteger sigS,
                                   int keyBitLen)
                            throws XiSecurityException

Throws:

XiSecurityException

getDigestPkcsPrefix

public static byte[] getDigestPkcsPrefix(HashAlgo hashAlgo)