Package org.bouncycastle.util
Class BigIntegers
- java.lang.Object
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- org.bouncycastle.util.BigIntegers
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public final class BigIntegers extends java.lang.Object
BigInteger utilities.
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Constructor Summary
Constructors Constructor Description BigIntegers()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static byte[]
asUnsignedByteArray(int length, java.math.BigInteger value)
Return the passed in value as an unsigned byte array.static byte[]
asUnsignedByteArray(java.math.BigInteger value)
Return the passed in value as an unsigned byte array.static java.math.BigInteger
createRandomInRange(java.math.BigInteger min, java.math.BigInteger max, java.security.SecureRandom random)
Return a random BigInteger not less than 'min' and not greater than 'max'static java.math.BigInteger
fromUnsignedByteArray(byte[] buf)
static java.math.BigInteger
fromUnsignedByteArray(byte[] buf, int off, int length)
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Method Detail
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asUnsignedByteArray
public static byte[] asUnsignedByteArray(java.math.BigInteger value)
Return the passed in value as an unsigned byte array.- Parameters:
value
- value to be converted.- Returns:
- a byte array without a leading zero byte if present in the signed encoding.
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asUnsignedByteArray
public static byte[] asUnsignedByteArray(int length, java.math.BigInteger value)
Return the passed in value as an unsigned byte array.- Parameters:
value
- value to be converted.- Returns:
- a byte array without a leading zero byte if present in the signed encoding.
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createRandomInRange
public static java.math.BigInteger createRandomInRange(java.math.BigInteger min, java.math.BigInteger max, java.security.SecureRandom random)
Return a random BigInteger not less than 'min' and not greater than 'max'- Parameters:
min
- the least value that may be generatedmax
- the greatest value that may be generatedrandom
- the source of randomness- Returns:
- a random BigInteger value in the range [min,max]
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fromUnsignedByteArray
public static java.math.BigInteger fromUnsignedByteArray(byte[] buf)
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fromUnsignedByteArray
public static java.math.BigInteger fromUnsignedByteArray(byte[] buf, int off, int length)
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