项目：openjdk-jdk10
文件：ApiTest.java
private static void runForEachAlg(String mech,String alg)
throws Exception {
for (int strength : new int[]{-1,1,223,224,192,255,256}) {
for (Capability cp : Capability.values()) {
for (byte[] pr : new byte[][]{null,new byte[]{},"personal".getBytes()}) {
SecureRandomParameters param
= DrbgParameters.instantiation(strength,cp,pr);
runForEachParam(mech,alg,param);
}
}
}
}
项目：openjdk9
文件：ApiTest.java
private static void runForEachAlg(String mech,String alg)
throws Exception {
for (int strength : new int[]{Integer.MIN_VALUE,-1,param);
}
}
}
}
项目：demo-java-9
文件：Drbg.java
public static void main(String[] args) throws NoSuchAlgorithmException {
Instantiation instantiation = DrbgParameters.instantiation(128,RESEED_ONLY,null);
SecureRandom random = SecureRandom.getInstance("DRBG",instantiation);
byte[] bytes = new byte[20];
random.nextBytes(bytes);
for (byte b : bytes) {
System.out.print(b + " ");
}
System.out.println();
}
public static void main(String args[]) throws Exception {
byte[] p,np1,np2;
// Capability
Asserts.assertTrue(PR_AND_RESEED.supportsPredictionResistance());
Asserts.assertTrue(PR_AND_RESEED.supportsReseeding());
Asserts.assertFalse(RESEED_ONLY.supportsPredictionResistance());
Asserts.assertTrue(RESEED_ONLY.supportsReseeding());
Asserts.assertFalse(NONE.supportsPredictionResistance());
Asserts.assertFalse(NONE.supportsReseeding());
// Instantiation
p = "Instantiation".getBytes();
DrbgParameters.Instantiation ins = DrbgParameters
.instantiation(192,p);
Asserts.assertTrue(ins.getStrength() == 192);
Asserts.assertTrue(ins.getCapability() == RESEED_ONLY);
np1 = ins.getPersonalizationString();
np2 = ins.getPersonalizationString();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1,p));
Asserts.assertTrue(Arrays.equals(np2,p));
Asserts.assertNE(np1,np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = ins.getPersonalizationString();
Asserts.assertTrue(Arrays.equals(np1,np2));
ins = DrbgParameters.instantiation(-1,NONE,null);
Asserts.assertNull(ins.getPersonalizationString());
iae(() -> DrbgParameters.instantiation(-2,null));
npe(() -> DrbgParameters.instantiation(-1,null,null));
// NextBytes
p = "NextBytes".getBytes();
DrbgParameters.NextBytes nb = DrbgParameters
.nextBytes(192,true,p);
Asserts.assertTrue(nb.getStrength() == 192);
Asserts.assertTrue(nb.getPredictionResistance());
np1 = nb.getAdditionalinput();
np2 = nb.getAdditionalinput();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1,np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = nb.getAdditionalinput();
Asserts.assertTrue(Arrays.equals(np1,np2));
iae(() -> DrbgParameters.nextBytes(-2,false,null));
// Reseed
p = "Reseed".getBytes();
DrbgParameters.Reseed rs = DrbgParameters
.reseed(true,p);
Asserts.assertTrue(rs.getPredictionResistance());
np1 = rs.getAdditionalinput();
np2 = rs.getAdditionalinput();
// Getter outputs have same content but not the same object
Asserts.assertTrue(Arrays.equals(np1,np2);
// Changes to original input has no affect on object
p[0] = 'X';
np2 = rs.getAdditionalinput();
Asserts.assertTrue(Arrays.equals(np1,np2));
}
项目：openjdk-jdk10
文件：GetInstanceTest.java
项目：openjdk-jdk10
文件：CommonSeeder.java
public static void main(String[] args) throws Exception {
byte[] result = new byte[10];
MyES es = new MyES();
// Set es as the default entropy source,overriding SeedGenerator.
setDefaultSeeder(es);
// nothing happened yet
es.checkUsage(0);
SecureRandom sr;
sr = SecureRandom.getInstance("DRBG");
// No entropy reading if only getInstance
es.checkUsage(0);
// Entropy is read at 1st nextBytes of the 1st DRBG
sr.nextInt();
es.checkUsage(1);
for (String mech : new String[]{"Hash_DRBG","HMAC_DRBG","CTR_DRBG"}) {
System.out.println("Testing " + mech + "...");
// DRBG with pr_false will never read entropy again no matter
// if nextBytes or reseed is called.
Security.setProperty("securerandom.drbg.config",mech);
sr = SecureRandom.getInstance("DRBG");
sr.nextInt();
sr.reseed();
es.checkUsage(0);
// DRBG with pr_true always read from default entropy,and
// its nextBytes always reseed itself
Security.setProperty("securerandom.drbg.config",mech + ",pr_and_reseed");
sr = SecureRandom.getInstance("DRBG");
sr.nextInt();
es.checkUsage(2); // one instantiate,one reseed
sr.nextInt();
es.checkUsage(1); // one reseed in nextBytes
sr.reseed();
es.checkUsage(1); // one reseed
sr.nextBytes(result,DrbgParameters.nextBytes(-1,null));
es.checkUsage(0); // pr_false for this call
sr.nextBytes(result,null));
es.checkUsage(1); // pr_true for this call
sr.reseed(DrbgParameters.reseed(true,null));
es.checkUsage(1); // reseed from es
sr.reseed(DrbgParameters.reseed(false,null));
es.checkUsage(0); // reseed from AbstractDrbg.SeederHolder.seeder
}
}
public static void main(String[] args) throws Exception {
check(null,"Hash_DRBG","SHA-256","reseed_only",",128");
check("",128");
check("sha-256",128");
check("SHA-3");
check("hash_drbg",128");
check("hmac_drbg",128");
check("ctr_drbg","CTR_DRBG","AES-",128","use_df");
// trying all permutations
checkPermutations(
Collections.emptyList(),Arrays.asList("hash_drbg","sha-512","Pr_and_Reseed","192"),"SHA-512","pr_and_reseed",192");
check("Hash_DRBG,Hmac_DRBG");
check("SHA-224,SHA-256");
check("128,256");
check("none,reseed_only");
check("use_df,no_df");
check("Hash_DRBG,SHA-256");
check(null,DrbgParameters.instantiation(112,PR_AND_RESEED,null),112");
check(null,DrbgParameters.instantiation(256,256");
check(null,DrbgParameters.instantiation(384,null));
check("sha-224","SHA-224",112");
check("sha-224",null));
check("hash_drbg,sha-512,Pr_and_Reseed,192",112");
check("hash_drbg,DrbgParameters.instantiation(-1,192");
// getInstance params can be stronger than deFinition
check("hash_drbg,sha-256,None,112",DrbgParameters.instantiation(192,192");
check("hash_drbg,sha-224",new MoreDrbgParameters(
null,null)),"SHA-512");
check("hash_drbg,"SHA-224");
check("hash_drbg","hmac_drbg","SHA-256");
check("hash_drbg,"sha-3",null)));
check("hash_drbg,"UnkNown_DRBG",null)));
}
public static void main(String args[]) throws Exception {
byte[] p,null);
Asserts.assertNull(ins.getPersonalizationString());
// NextBytes
p = "NextBytes".getBytes();
DrbgParameters.NextBytes nb = DrbgParameters
.nextBytes(192,np2));
// Reseed
p = "Reseed".getBytes();
DrbgParameters.Reseed rs = DrbgParameters
.reseed(true,np2));
}
项目：openjdk9
文件：GetInstanceTest.java
项目：openjdk9
文件：CommonSeeder.java
public static void main(String[] args) throws Exception {
byte[] result = new byte[10];
MyES es = new MyES();
// Set es as the default entropy source,null));
es.checkUsage(0); // reseed from AbstractDrbg.SeederHolder.seeder
}
}
public static void main(String[] args) throws Exception {
check(null,null)));
}
/**
* Creates a new {@code MoreDrbgParameters} object.
*
* @param es the {@link EntropySource} to use. If set to {@code null},* a default entropy source will be used.
* @param mech mech name. If set to {@code null},the one in
* securerandom.drbg.config is used. This argument is ignored
* when passing to HashDrbg/HmacDrbg/CtrDrbg.
* @param algorithm the requested algorithm to use. If set to {@code null},* the algorithm will be decided by strength.
* @param nonce the nonce to use. If set to {@code null},* a nonce will be assigned.
* @param usedf whether a derivation function should be used
* @param config a {@link DrbgParameters.Instantiation} object
*/
public MoreDrbgParameters(EntropySource es,String mech,String algorithm,byte[] nonce,boolean usedf,DrbgParameters.Instantiation config) {
this.mech = mech;
this.algorithm = algorithm;
this.es = es;
this.nonce = (nonce == null) ? null : nonce.clone();
this.usedf = usedf;
this.strength = config.getStrength();
this.capability = config.getCapability();
this.personalizationString = config.getPersonalizationString();
}
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