本文整理汇总了Java中org.bouncycastle.crypto.prng.EntropySource类的典型用法代码示例。如果您正苦于以下问题:Java EntropySource类的具体用法?Java EntropySource怎么用?Java EntropySource使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
EntropySource类属于org.bouncycastle.crypto.prng包,在下文中一共展示了EntropySource类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Java代码示例。
示例1: get
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Return an entropy source that will create bitsRequired bits of entropy on
* each invocation of getEntropy().
*
* @param bitsRequired size (in bits) of entropy to be created by the provided source.
* @return an EntropySource that generates bitsRequired bits of entropy on each call to its getEntropy() method.
*/
public EntropySource get(final int bitsRequired)
{
return new EntropySource()
{
public boolean isPredictionResistant()
{
return _predictionResistant;
}
public byte[] getEntropy()
{
byte[] rv = new byte[(bitsRequired + 7) / 8];
_sr.nextBytes(rv);
return rv;
}
public int entropySize()
{
return bitsRequired;
}
};
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:30,代码来源:TestRandomEntropySourceProvider.java
示例2: CTRSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A CTR DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param engine underlying block cipher to use to support DRBG
* @param keySizeInBits size of the key to use with the block cipher.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public CTRSP800DRBG(BlockCipher engine, int keySizeInBits, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
_entropySource = entropySource;
_engine = engine;
_keySizeInBits = keySizeInBits;
_seedLength = keySizeInBits + engine.getBlockSize() * 8;
_isTDEA = isTDEA(engine);
if (securityStrength > 256)
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (getMaxSecurityStrength(engine, keySizeInBits) < securityStrength)
{
throw new IllegalArgumentException("Requested security strength is not supported by block cipher and key size");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
byte[] entropy = entropySource.getEntropy(); // Get_entropy_input
CTR_DRBG_Instantiate_algorithm(entropy, nonce, personalizationString);
}
开发者ID:Appdome,项目名称:ipack,代码行数:41,代码来源:CTRSP800DRBG.java
示例3: HashSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Hash DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param digest source digest to use for DRB stream.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public HashSP800DRBG(Digest digest, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
if (securityStrength > Utils.getMaxSecurityStrength(digest))
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
_digest = digest;
_entropySource = entropySource;
_securityStrength = securityStrength;
_seedLength = ((Integer)seedlens.get(digest.getAlgorithmName())).intValue();
// 1. seed_material = entropy_input || nonce || personalization_string.
// 2. seed = Hash_df (seed_material, seedlen).
// 3. V = seed.
// 4. C = Hash_df ((0x00 || V), seedlen). Comment: Preceed V with a byte
// of zeros.
// 5. reseed_counter = 1.
// 6. Return V, C, and reseed_counter as the initial_working_state
byte[] entropy = entropySource.getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
byte[] seed = Utils.hash_df(_digest, seedMaterial, _seedLength);
_V = seed;
byte[] subV = new byte[_V.length + 1];
System.arraycopy(_V, 0, subV, 1, _V.length);
_C = Utils.hash_df(_digest, subV, _seedLength);
_reseedCounter = 1;
}
开发者ID:Appdome,项目名称:ipack,代码行数:48,代码来源:HashSP800DRBG.java
示例4: HMacSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Hash DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param hMac Hash MAC to base the DRBG on.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public HMacSP800DRBG(Mac hMac, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
if (securityStrength > Utils.getMaxSecurityStrength(hMac))
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
_entropySource = entropySource;
_hMac = hMac;
byte[] entropy = entropySource.getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
_K = new byte[hMac.getMacSize()];
_V = new byte[_K.length];
Arrays.fill(_V, (byte)1);
hmac_DRBG_Update(seedMaterial);
_reseedCounter = 1;
}
开发者ID:Appdome,项目名称:ipack,代码行数:38,代码来源:HMacSP800DRBG.java
示例5: CTRSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A CTR DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param engine underlying block cipher to use to support DRBG
* @param keySizeInBits size of the key to use with the block cipher.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public CTRSP800DRBG(BlockCipher engine, int keySizeInBits, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
_entropySource = entropySource;
_engine = engine;
_keySizeInBits = keySizeInBits;
_securityStrength = securityStrength;
_seedLength = keySizeInBits + engine.getBlockSize() * 8;
_isTDEA = isTDEA(engine);
if (securityStrength > 256)
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (getMaxSecurityStrength(engine, keySizeInBits) < securityStrength)
{
throw new IllegalArgumentException("Requested security strength is not supported by block cipher and key size");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
byte[] entropy = getEntropy(); // Get_entropy_input
CTR_DRBG_Instantiate_algorithm(entropy, nonce, personalizationString);
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:42,代码来源:CTRSP800DRBG.java
示例6: HashSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Hash DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param digest source digest to use for DRB stream.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public HashSP800DRBG(Digest digest, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
if (securityStrength > Utils.getMaxSecurityStrength(digest))
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
_digest = digest;
_entropySource = entropySource;
_securityStrength = securityStrength;
_seedLength = ((Integer)seedlens.get(digest.getAlgorithmName())).intValue();
// 1. seed_material = entropy_input || nonce || personalization_string.
// 2. seed = Hash_df (seed_material, seedlen).
// 3. V = seed.
// 4. C = Hash_df ((0x00 || V), seedlen). Comment: Preceed V with a byte
// of zeros.
// 5. reseed_counter = 1.
// 6. Return V, C, and reseed_counter as the initial_working_state
byte[] entropy = getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
byte[] seed = Utils.hash_df(_digest, seedMaterial, _seedLength);
_V = seed;
byte[] subV = new byte[_V.length + 1];
System.arraycopy(_V, 0, subV, 1, _V.length);
_C = Utils.hash_df(_digest, subV, _seedLength);
_reseedCounter = 1;
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:48,代码来源:HashSP800DRBG.java
示例7: HMacSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Hash DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param hMac Hash MAC to base the DRBG on.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public HMacSP800DRBG(Mac hMac, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
if (securityStrength > Utils.getMaxSecurityStrength(hMac))
{
throw new IllegalArgumentException("Requested security strength is not supported by the derivation function");
}
if (entropySource.entropySize() < securityStrength)
{
throw new IllegalArgumentException("Not enough entropy for security strength required");
}
_securityStrength = securityStrength;
_entropySource = entropySource;
_hMac = hMac;
byte[] entropy = getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
_K = new byte[hMac.getMacSize()];
_V = new byte[_K.length];
Arrays.fill(_V, (byte)1);
hmac_DRBG_Update(seedMaterial);
_reseedCounter = 1;
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:39,代码来源:HMacSP800DRBG.java
示例8: get
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
public EntropySource get(final int bitsRequired)
{
return new EntropySource()
{
int index = 0;
public boolean isPredictionResistant()
{
return isPredictionResistant;
}
public byte[] getEntropy()
{
byte[] rv = new byte[bitsRequired / 8];
System.arraycopy(data, index, rv, 0, rv.length);
index += bitsRequired / 8;
return rv;
}
public int entropySize()
{
return bitsRequired;
}
};
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:29,代码来源:TestEntropySourceProvider.java
示例9: DRBGTestVector
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
public DRBGTestVector(Digest digest, EntropySource eSource, boolean predictionResistance, String nonce, int securityStrength, String[] expected)
{
_digest = digest;
_eSource = eSource;
_pr = predictionResistance;
_nonce = nonce;
_ss = securityStrength;
_ev = expected;
_personalisation = null;
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:11,代码来源:DRBGTestVector.java
示例10: get
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
public EntropySource get(final int bitsRequired)
{
return new EntropySource()
{
int index = 0;
public boolean isPredictionResistant()
{
return true;
}
public byte[] getEntropy()
{
byte[] rv = new byte[bitsRequired / 8];
if (data.length < (index + rv.length))
{
throw new IllegalStateException("Insufficient entropy - need " + rv.length + " bytes for challenge seed.");
}
System.arraycopy(data, index, rv, 0, rv.length);
index += bitsRequired / 8;
return rv;
}
public int entropySize()
{
return bitsRequired;
}
};
}
开发者ID:cwgit,项目名称:ximix,代码行数:34,代码来源:SeededChallenger.java
示例11: DualECSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Dual EC DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param digest source digest to use with the DRB stream.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public DualECSP800DRBG(Digest digest, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
_digest = digest;
_entropySource = entropySource;
_securityStrength = securityStrength;
if (Utils.isTooLarge(personalizationString, MAX_PERSONALIZATION_STRING / 8))
{
throw new IllegalArgumentException("Personalization string too large");
}
if (entropySource.entropySize() < securityStrength || entropySource.entropySize() > MAX_ENTROPY_LENGTH)
{
throw new IllegalArgumentException("EntropySource must provide between " + securityStrength + " and " + MAX_ENTROPY_LENGTH + " bits");
}
byte[] entropy = entropySource.getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
if (securityStrength <= 128)
{
if (Utils.getMaxSecurityStrength(digest) < 128)
{
throw new IllegalArgumentException("Requested security strength is not supported by digest");
}
_seedlen = 256;
_outlen = 240 / 8;
_curve = (ECCurve.Fp)NISTNamedCurves.getByName("P-256").getCurve();
_P = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p256_Px), new ECFieldElement.Fp(_curve.getQ(), p256_Py));
_Q = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p256_Qx), new ECFieldElement.Fp(_curve.getQ(), p256_Qy));
}
else if (securityStrength <= 192)
{
if (Utils.getMaxSecurityStrength(digest) < 192)
{
throw new IllegalArgumentException("Requested security strength is not supported by digest");
}
_seedlen = 384;
_outlen = 368 / 8;
_curve = (ECCurve.Fp)NISTNamedCurves.getByName("P-384").getCurve();
_P = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p384_Px), new ECFieldElement.Fp(_curve.getQ(), p384_Py));
_Q = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p384_Qx), new ECFieldElement.Fp(_curve.getQ(), p384_Qy));
}
else if (securityStrength <= 256)
{
if (Utils.getMaxSecurityStrength(digest) < 256)
{
throw new IllegalArgumentException("Requested security strength is not supported by digest");
}
_seedlen = 521;
_outlen = 504 / 8;
_curve = (ECCurve.Fp)NISTNamedCurves.getByName("P-521").getCurve();
_P = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p521_Px), new ECFieldElement.Fp(_curve.getQ(), p521_Py));
_Q = new ECPoint.Fp(_curve, new ECFieldElement.Fp(_curve.getQ(), p521_Qx), new ECFieldElement.Fp(_curve.getQ(), p521_Qy));
}
else
{
throw new IllegalArgumentException("security strength cannot be greater than 256 bits");
}
_s = Utils.hash_df(_digest, seedMaterial, _seedlen);
_sLength = _s.length;
_reseedCounter = 0;
}
开发者ID:Appdome,项目名称:ipack,代码行数:77,代码来源:DualECSP800DRBG.java
示例12: DualECSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Dual EC DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param pointSet an array of points to choose from, in order of increasing security strength
* @param digest source digest to use with the DRB stream.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public DualECSP800DRBG(DualECPoints[] pointSet, Digest digest, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
_digest = digest;
_entropySource = entropySource;
_securityStrength = securityStrength;
if (Utils.isTooLarge(personalizationString, MAX_PERSONALIZATION_STRING / 8))
{
throw new IllegalArgumentException("Personalization string too large");
}
if (entropySource.entropySize() < securityStrength || entropySource.entropySize() > MAX_ENTROPY_LENGTH)
{
throw new IllegalArgumentException("EntropySource must provide between " + securityStrength + " and " + MAX_ENTROPY_LENGTH + " bits");
}
byte[] entropy = getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
for (int i = 0; i != pointSet.length; i++)
{
if (securityStrength <= pointSet[i].getSecurityStrength())
{
if (Utils.getMaxSecurityStrength(digest) < pointSet[i].getSecurityStrength())
{
throw new IllegalArgumentException("Requested security strength is not supported by digest");
}
_seedlen = pointSet[i].getSeedLen();
_outlen = pointSet[i].getMaxOutlen() / 8;
_P = pointSet[i].getP();
_Q = pointSet[i].getQ();
break;
}
}
if (_P == null)
{
throw new IllegalArgumentException("security strength cannot be greater than 256 bits");
}
_s = Utils.hash_df(_digest, seedMaterial, _seedlen);
_sLength = _s.length;
_reseedCounter = 0;
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:58,代码来源:DualECSP800DRBG.java
示例13: entropySource
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
public EntropySource entropySource()
{
return _eSource;
}
开发者ID:ttt43ttt,项目名称:gwt-crypto,代码行数:5,代码来源:DRBGTestVector.java
示例14: getSecureRandom
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Generates a deterministic SecureRandom based on the userKey and serverKey.
*/
public static SecureRandom getSecureRandom(byte[] userKey, byte[] serverKey) {
SecureRandom secureRandom;
try {
secureRandom =
SecureRandom.getInstance(RANDOM_NUMBER_ALGORITHM, RANDOM_NUMBER_ALGORITHM_PROVIDER);
} catch (Exception e) {
LOGGER.error(null, e);
secureRandom = new SecureRandom();
}
byte[] userSeed = new byte[Math.max(userKey.length, serverKey.length)];
// XOR the key parts to get our seed, repeating them if they lengths
// don't match
for (int i = 0; i < userSeed.length; i++) {
userSeed[i] = (byte) (userKey[i % userKey.length] ^ serverKey[i % serverKey.length]);
}
// Set up out private key variables
secureRandom.setSeed(userSeed);
final SecureRandom finalSecureRandom = secureRandom;
SP800SecureRandomBuilder sp800SecureRandomBuilder =
new SP800SecureRandomBuilder(i -> new EntropySource() {
@Override
public boolean isPredictionResistant() {
return true;
}
@Override
public byte[] getEntropy() {
byte[] entropy = new byte[(i + 7) / 8];
finalSecureRandom.nextBytes(entropy);
return entropy;
}
@Override
public int entropySize() {
return i;
}
});
sp800SecureRandomBuilder.setPersonalizationString(userKey);
secureRandom = sp800SecureRandomBuilder.buildHash(new SHA512Digest(), serverKey, true);
return secureRandom;
}
开发者ID:Braveno,项目名称:cosigner,代码行数:49,代码来源:DeterministicRng.java
示例15: DualECSP800DRBG
import org.bouncycastle.crypto.prng.EntropySource; //导入依赖的package包/类
/**
* Construct a SP800-90A Dual EC DRBG.
* <p>
* Minimum entropy requirement is the security strength requested.
* </p>
* @param pointSet an array of points to choose from, in order of increasing security strength
* @param digest source digest to use with the DRB stream.
* @param securityStrength security strength required (in bits)
* @param entropySource source of entropy to use for seeding/reseeding.
* @param personalizationString personalization string to distinguish this DRBG (may be null).
* @param nonce nonce to further distinguish this DRBG (may be null).
*/
public DualECSP800DRBG(DualECPoints[] pointSet, Digest digest, int securityStrength, EntropySource entropySource, byte[] personalizationString, byte[] nonce)
{
_digest = digest;
_entropySource = entropySource;
_securityStrength = securityStrength;
if (Utils.isTooLarge(personalizationString, MAX_PERSONALIZATION_STRING / 8))
{
throw new IllegalArgumentException("Personalization string too large");
}
if (entropySource.entropySize() < securityStrength || entropySource.entropySize() > MAX_ENTROPY_LENGTH)
{
throw new IllegalArgumentException("EntropySource must provide between " + securityStrength + " and " + MAX_ENTROPY_LENGTH + " bits");
}
byte[] entropy = entropySource.getEntropy();
byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalizationString);
for (int i = 0; i != pointSet.length; i++)
{
if (securityStrength <= pointSet[i].getSecurityStrength())
{
if (Utils.getMaxSecurityStrength(digest) < pointSet[i].getSecurityStrength())
{
throw new IllegalArgumentException("Requested security strength is not supported by digest");
}
_seedlen = pointSet[i].getSeedLen();
_outlen = pointSet[i].getMaxOutlen() / 8;
_P = pointSet[i].getP();
_Q = pointSet[i].getQ();
break;
}
}
if (_P == null)
{
throw new IllegalArgumentException("security strength cannot be greater than 256 bits");
}
_s = Utils.hash_df(_digest, seedMaterial, _seedlen);
_sLength = _s.length;
_reseedCounter = 0;
}
开发者ID:redfish64,项目名称:TinyTravelTracker,代码行数:58,代码来源:DualECSP800DRBG.java
注:本文中的org.bouncycastle.crypto.prng.EntropySource类示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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