org.xipki.security.util

Class PKCS1Util

java.lang.Object

org.xipki.security.util.PKCS1Util

public class PKCS1Util
extends Object

PKCS#1 utility class.

Since:

5.3.14

Author:

Lijun Liao

Constructor Summary

Constructors

Constructor and Description
PKCS1Util()

Method Summary

Modifier and Type	Method and Description
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 byte[]	getDigestPkcsPrefix(HashAlgo hashAlgo)
static byte[]	RSAES_OAEP_DECODE(byte[] EM, int modulusBigLength, HashAlgo hashAlgo)
static byte[]	RSAES_OAEP_ENCODE(byte[] M, int modulusBigLength, HashAlgo hashAlgo, SecureRandom random)

Methods inherited from class java.lang.Object

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

Constructor Detail

PKCS1Util

public PKCS1Util()

Method Detail

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

getDigestPkcsPrefix

public static byte[] getDigestPkcsPrefix(HashAlgo hashAlgo)

RSAES_OAEP_ENCODE

public static byte[] RSAES_OAEP_ENCODE(byte[] M,
                                       int modulusBigLength,
                                       HashAlgo hashAlgo,
                                       SecureRandom random)

RSAES_OAEP_DECODE

public static byte[] RSAES_OAEP_DECODE(byte[] EM,
                                       int modulusBigLength,
                                       HashAlgo hashAlgo)