Class Password

java.lang.Object

zeroecho.sdk.util.Password

public final class Password
extends Object

Utility class for generating random passwords and secure random byte arrays.

This class provides methods to:

• Generate cryptographically secure random byte arrays of specified length.
• Generate random passwords composed of characters derived from random bytes.

Randomness is supplied by the shared thread-safe source in RandomSupport.

Since:

1.0

Method Summary

Modifier and Type	Method	Description
static char[]	generatePrintablePasswordChars(int length)	Generates a printable password in a caller-owned character array.
static byte[]	generateRandom(byte[] password)	Fills the supplied array with cryptographically strong random bytes.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

generateRandom

public static byte[] generateRandom(byte[] password)

Fills the supplied array with cryptographically strong random bytes.

Parameters:

password - array to fill; must not be null

Returns:

password

Throws:

NullPointerException - if password is null

generatePrintablePasswordChars

public static char[] generatePrintablePasswordChars(int length)

Generates a printable password in a caller-owned character array.

Parameters:

length - desired password length; must be positive

Returns:

a newly allocated printable password

Throws:

IllegalArgumentException - if length is not positive