private void init()

in java/src/main/java/com/alexa/awisapi/AuthenticationHelper.java [354:376]

• 20 lines of code
• 4 McCabe index (conditional complexity)

        private void init(byte[] ikm, byte[] salt) {
            byte[] realSalt = salt == null ? EMPTY_ARRAY : (byte[]) salt.clone();
            byte[] rawKeyMaterial = EMPTY_ARRAY;

            try {
                final Mac e = Mac.getInstance(this.algorithm);
                if (realSalt.length == 0) {
                    realSalt = new byte[e.getMacLength()];
                    Arrays.fill(realSalt, (byte) 0);
                }

                e.init(new SecretKeySpec(realSalt, this.algorithm));
                rawKeyMaterial = e.doFinal(ikm);
                final SecretKeySpec key = new SecretKeySpec(rawKeyMaterial, this.algorithm);
                Arrays.fill(rawKeyMaterial, (byte) 0);
                this.unsafeInitWithoutKeyExtraction(key);
            } catch (final GeneralSecurityException var10) {
                throw new RuntimeException("Unexpected exception", var10);
            } finally {
                Arrays.fill(rawKeyMaterial, (byte) 0);
            }

        }