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| <h2 title="Class PrimeGenerator" class="title">Class PrimeGenerator</h2> |
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| <pre>public class <span class="strong">PrimeGenerator</span> |
| extends java.lang.Object</pre> |
| <div class="block">Class to generate the primes used in the Paillier cryptosystem |
| <p> |
| This class will either: |
| <p> |
| (1) Generate the primes according to Java's BigInteger prime generation methods, which satisfy ANSI X9.80 |
| <p> |
| or |
| <p> |
| (2) Bolster Java BigInteger's prime generation to meet the requirements of NIST SP 800-56B ("Recommendation for Pair-Wise Key Establishment Schemes Using |
| Integer Factorization Cryptography") and FIPS 186-4 ("Digital Signature Standard (DSS)") for key generation using probable primes. |
| <p> |
| Relevant page: SP 800-56B: p30 http://csrc.nist.gov/publications/nistpubs/800-56B/sp800-56B.pdf#page=30 Heading: 5.4 Prime Number Generators |
| <p> |
| Relevant pages FIPS 186-4: p50-p53, p55, p71: Sections B.3.1, B.3.3 |
| <p> |
| http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf#page=61 |
| <p> |
| http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf#page=80 |
| <p> |
| Headings of most interest: Table C.2 "Minimum number of rounds of M-R testing when generating primes for use in RSA Digital Signatures" and "The primes p and |
| q shall be selected with the following constraints"</div> |
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| <td class="colOne"><code><strong><a href="../../../../org/apache/pirk/encryption/PrimeGenerator.html#PrimeGenerator()">PrimeGenerator</a></strong>()</code> </td> |
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| <td class="colFirst"><code>static java.math.BigInteger[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/pirk/encryption/PrimeGenerator.html#getPrimePair(int,%20int,%20java.util.Random)">getPrimePair</a></strong>(int bitLength, |
| int certainty, |
| java.util.Random rnd)</code> |
| <div class="block">This method returns a two-long array containing a viable RSA p and q meeting FIPS 186-4 and SP 800-56B</div> |
| </td> |
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| <td class="colFirst"><code>static java.math.BigInteger</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/pirk/encryption/PrimeGenerator.html#getSecondPrime(int,%20int,%20java.util.Random,%20java.math.BigInteger)">getSecondPrime</a></strong>(int bitLength, |
| int certainty, |
| java.util.Random rnd, |
| java.math.BigInteger p)</code> |
| <div class="block">Method to generate a second prime, q, in relation to a (p,q) RSA key pair</div> |
| </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static java.math.BigInteger</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/pirk/encryption/PrimeGenerator.html#getSinglePrime(int,%20int,%20java.util.Random)">getSinglePrime</a></strong>(int bitLength, |
| int certainty, |
| java.util.Random rnd)</code> |
| <div class="block">Method to generate a single prime</div> |
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| <pre>public PrimeGenerator()</pre> |
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| <pre>public static java.math.BigInteger getSinglePrime(int bitLength, |
| int certainty, |
| java.util.Random rnd)</pre> |
| <div class="block">Method to generate a single prime |
| <p> |
| Will optionally ensure that the prime meets the requirements in NIST SP 800-56B and FIPS 186-4 |
| <p> |
| NOTE: bitLength corresponds to the FIPS 186-4 nlen parameter</div> |
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| <pre>public static java.math.BigInteger getSecondPrime(int bitLength, |
| int certainty, |
| java.util.Random rnd, |
| java.math.BigInteger p)</pre> |
| <div class="block">Method to generate a second prime, q, in relation to a (p,q) RSA key pair |
| <p> |
| Will optionally ensure that the prime meets the requirements in NIST SP 800-56B and FIPS 186-4 |
| <p> |
| NOTE: bitLength corresponds to the FIPS 186-4 nlen parameter</div> |
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| <pre>public static java.math.BigInteger[] getPrimePair(int bitLength, |
| int certainty, |
| java.util.Random rnd)</pre> |
| <div class="block">This method returns a two-long array containing a viable RSA p and q meeting FIPS 186-4 and SP 800-56B</div> |
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