BigIntegerUtils (OpenAM Server Only 7.2.2 Documentation)

java.lang.Object
- org.forgerock.json.jose.utils.BigIntegerUtils

```
public final class BigIntegerUtils
extends Object
```
Utils to complement bit operations not covered by the BigInteger functions.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static BigInteger`	`base64UrlDecode(String magnitudeBase64UrlEncoded)`	Decode a big-endian base64 url encoding of a magnitude big integer and transform it as a positive big integer.
`static String`	`base64UrlEncodeUnsignedBigEndian(BigInteger number)`	Encode a big integer into a base 64 url encoded unsigned big endian.
`static byte[]`	`toBytesUnsigned(BigInteger x)`	Returns the unsigned big-endian byte array of a big integer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - toBytesUnsigned
```
public static byte[] toBytesUnsigned(BigInteger x)
```
    Returns the unsigned big-endian byte array of a big integer. Any leading zero sign byte is removed.
    
    Parameters:
    
    x - a big integer
    
    Returns:
    
    the unsigned big-endian byte array of x
  - base64UrlDecode
```
public static BigInteger base64UrlDecode(String magnitudeBase64UrlEncoded)
```
    Decode a big-endian base64 url encoding of a magnitude big integer and transform it as a positive big integer.
    
    Parameters:
    
    magnitudeBase64UrlEncoded - big-endian base64 url encoding of a big integer magnitude
    
    Returns:
    
    a positive big integer with the decoded magnitude.
  - base64UrlEncodeUnsignedBigEndian
```
public static String base64UrlEncodeUnsignedBigEndian(BigInteger number)
```
    Encode a big integer into a base 64 url encoded unsigned big endian.
    
    Parameters:
    
    number - a big integer
    
    Returns:
    
    big-endian base64 url encoding of a big integer magnitude