Package org.apache.sshd.common.kex
Class DHGroupData
- java.lang.Object
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- org.apache.sshd.common.kex.DHGroupData
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public final class DHGroupData extends Object
Simple class holding the data for DH group key exchanges.- Author:
- Apache MINA SSHD Project
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static byte[]
getG()
static byte[]
getOakleyGroupPrimeValue(String name)
static byte[]
getP1()
static byte[]
getP14()
static byte[]
getP15()
static byte[]
getP16()
static byte[]
getP17()
static byte[]
getP18()
static byte[]
parseOakleyGroupPrimeValue(String str)
Parses the string assumed to contain a HEX-encoded Oakely prime value in big endian formatstatic byte[]
readOakleyGroupPrimeValue(BufferedReader br)
Reads a HEX encoded prime value from a possibly multi-line input as follows:static byte[]
readOakleyGroupPrimeValue(InputStream stream)
static byte[]
readOakleyGroupPrimeValue(Reader r)
static byte[]
readOakleyGroupPrimeValue(String name)
Reads a HEX-encoded Oakley prime value from an internal resource filestatic byte[]
readOakleyGroupPrimeValue(Stream<String> lines)
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Method Detail
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getG
public static byte[] getG()
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getP1
public static byte[] getP1()
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getP14
public static byte[] getP14()
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getP15
public static byte[] getP15()
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getP16
public static byte[] getP16()
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getP17
public static byte[] getP17()
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getP18
public static byte[] getP18()
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getOakleyGroupPrimeValue
public static byte[] getOakleyGroupPrimeValue(String name)
- Parameters:
name
- The name of the resource file containing the prime value data- Returns:
- The prime value bytes suitable for building a
BigInteger
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readOakleyGroupPrimeValue
public static byte[] readOakleyGroupPrimeValue(String name) throws IOError
Reads a HEX-encoded Oakley prime value from an internal resource file- Parameters:
name
- The name of the resource file containing the prime value data. Seeorg.apache.sshd.common.kex
package for available primes- Returns:
- The prime value bytes suitable for building a
BigInteger
- Throws:
IOError
- If failed to access/read the required resource- See Also:
readOakleyGroupPrimeValue(InputStream)
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readOakleyGroupPrimeValue
public static byte[] readOakleyGroupPrimeValue(InputStream stream) throws IOException
- Throws:
IOException
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readOakleyGroupPrimeValue
public static byte[] readOakleyGroupPrimeValue(Reader r) throws IOException
- Throws:
IOException
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readOakleyGroupPrimeValue
public static byte[] readOakleyGroupPrimeValue(BufferedReader br) throws IOException
Reads a HEX encoded prime value from a possibly multi-line input as follows:
- Lines are trimmed and all whitespaces removed.
- Empty lines (after trimming) are ignored.
- Lines beginning with "#" are ignored (assumed to be comments).
- Remaining lines are appended to one big string assumed to contain the HEX-encoded value
- Parameters:
br
- TheBufferedReader
to read the data from- Returns:
- The prime value bytes suitable for building a
BigInteger
- Throws:
IOException
- If invalid data or no encoded value found- See Also:
parseOakleyGroupPrimeValue
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readOakleyGroupPrimeValue
public static byte[] readOakleyGroupPrimeValue(Stream<String> lines) throws NumberFormatException
- Throws:
NumberFormatException
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parseOakleyGroupPrimeValue
public static byte[] parseOakleyGroupPrimeValue(String str) throws NumberFormatException
Parses the string assumed to contain a HEX-encoded Oakely prime value in big endian format- Parameters:
str
- The HEX-encoded string to decode - ignored ifnull
/empty- Returns:
- The prime value bytes suitable for building a
BigInteger
or empty array if no input - Throws:
NumberFormatException
- if malformed encoded value
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