com.ibm.security12.sun.security.util
Class BigInt
java.lang.Object
|
+--com.ibm.security12.sun.security.util.BigInt
- public final class BigInt
- extends Object
A low-overhead arbitrary-precision unsigned integer.
This is intended for use with ASN.1 parsing, and printing of
such parsed values. Convert to "BigInteger" if you need to do
arbitrary precision arithmetic, rather than just represent
the number as a wrapped array of bytes.
NOTE: This class may eventually disappear, to
be supplanted by big-endian byte arrays which hold both signed
and unsigned arbitrary-precision integers.
- Version:
- 1.24
- Author:
- David Brownell
Constructor Summary |
BigInt(java.math.BigInteger i)
Constructs a "Big" integer from a "BigInteger", which must be
positive (or zero) in value. |
BigInt(byte[] data)
Constructs a "Big" integer from a set of (big-endian) bytes. |
BigInt(int i)
Constructs a "Big" integer from a normal Java integer. |
Method Summary |
boolean |
equals(BigInt other)
Returns true iff the parameter is numerically equivalent. |
boolean |
equals(Object other)
Returns true iff the parameter is a numerically equivalent
BigInt. |
java.math.BigInteger |
toBigInteger()
Returns a BigInteger value which supports many arithmetic
operations. |
byte[] |
toByteArray()
Returns the data as a byte array. |
int |
toInt()
Converts the "big" integer to a java primitive integer. |
String |
toString()
Returns a hexadecimal printed representation. |
BigInt
public BigInt(byte[] data)
- Constructs a "Big" integer from a set of (big-endian) bytes.
Leading zeroes should be stripped off.
- Parameters:
data
- a sequence of bytes, most significant bytes/digits
first. CONSUMED.
BigInt
public BigInt(java.math.BigInteger i)
- Constructs a "Big" integer from a "BigInteger", which must be
positive (or zero) in value.
BigInt
public BigInt(int i)
- Constructs a "Big" integer from a normal Java integer.
- Parameters:
i
- the java primitive integer
toInt
public int toInt()
- Converts the "big" integer to a java primitive integer.
toString
public String toString()
- Returns a hexadecimal printed representation. The value is
formatted to fit on lines of at least 75 characters, with
embedded newlines. Words are separated for readability,
with eight words (32 bytes) per line.
- Overrides:
- toString in class Object
toBigInteger
public java.math.BigInteger toBigInteger()
- Returns a BigInteger value which supports many arithmetic
operations. Assumes negative values will never occur.
toByteArray
public byte[] toByteArray()
- Returns the data as a byte array. The most significant bit
of the array is bit zero (as in
java.math.BigInteger
).
equals
public boolean equals(Object other)
- Returns true iff the parameter is a numerically equivalent
BigInt.
- Parameters:
other
- the object being compared with this one.- Overrides:
- equals in class Object
equals
public boolean equals(BigInt other)
- Returns true iff the parameter is numerically equivalent.
- Parameters:
other
- the BigInt being compared with this one.