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.iem.BouncyCastle.3.1.3.source-code.SHA256Digest.crysl Maven / Gradle / Ivy

SPEC org.bouncycastle.crypto.digests.SHA256Digest

OBJECTS
	org.bouncycastle.crypto.digests.SHA256Digest digest;
	byte[] encodedState;
	
	byte inputByte;
	byte[] inputBytes;
	int inputBytesOffset;
	int inputBytesLen;
	
	byte[] outputBytes;
	int outputBytesOffset;
	
EVENTS
	c1: SHA256Digest();
	c2: SHA256Digest(digest);
//	@param encodedState the encoded state from the originating digest.
	c3: SHA256Digest(encodedState);
	Con := c1 | c2 | c3;
	
	u1: update(inputByte);
	u2: update(inputBytes, inputBytesOffset, inputBytesLen);
	Update := u1 | u2;
	
	df1: doFinal(outputBytes, outputBytesOffset);
	DoFinal := df1;
	
	r1: reset();
	Reset := r1;
	
ORDER
	Con, ((Reset?, Update+)+, DoFinal)*
	
CONSTRAINTS
	length[inputBytes] >= inputBytesOffset + inputBytesLen;
	inputBytesOffset >= 0;
	inputBytesLen > 0;
	length[outputBytes] >= outputBytesOffset;
	outputBytesOffset >= 0;
	
REQUIRES
	generatedSHA256Digest[digest];
	
ENSURES
	generatedSHA256Digest[this] after Con;
	digested[outputBytes];