crypto/src/main/java/org/springframework/security/crypto/encrypt/CipherUtils.java
public static SecretKey newSecretKey(String algorithm, String password) {
		return newSecretKey(algorithm, new PBEKeySpec(password.toCharArray()));
	}
public static SecretKey newSecretKey(String algorithm, String password) {
		return newSecretKey(algorithm, new PBEKeySpec(password.toCharArray()));
	}
Generates a SecretKey.