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• 3.1.2
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tu.crossing.JavaCryptographicArchitecture.3.1.2.source-code.KeyGenerator.crysl Maven / Gradle / Ivy

SPEC javax.crypto.KeyGenerator

OBJECTS
	int keysize;
	java.security.spec.AlgorithmParameterSpec params;
	javax.crypto.SecretKey key;
	java.lang.String algorithm;
	java.security.SecureRandom random;

EVENTS
	g1: getInstance(algorithm);
	g2: getInstance(algorithm, _);
	Get := g1 | g2;

	i1: init(keysize);
	i2: init(keysize, random);
	i3: init(params);
	i4: init(params, random);
	i5: init(random);
	Init := i1 | i2 | i3 | i4 | i5;
    
	gk1: key = generateKey();
	GenKey := gk1;

ORDER
	Get, Init?, GenKey

CONSTRAINTS
	algorithm in {"AES", "HmacSHA256", "HmacSHA384", "HmacSHA512"};
	algorithm in {"AES"} => keysize in {128, 192, 256};
   
REQUIRES
	randomized[random];
    
ENSURES 
	generatedKey[key, algorithm];