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author | Sergio Giro <sgiro@google.com> | 2016-02-01 18:52:42 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2016-02-01 18:52:42 +0000 |
commit | 9218edabd1ef9852bc2f13115dcadc81b442dd6c (patch) | |
tree | 8229ff72c8cbb06f49dce3a8382930919fa6fc2b /bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java | |
parent | 9b30eb05e5be69d51881a0d1b31e503e97acd784 (diff) | |
parent | 397d32894b89b506dc318e0f83446187c9b76ebe (diff) | |
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Merge "Merge remote-tracking branch 'aosp/upstream-master' into merge-152-from-upstream"
Diffstat (limited to 'bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java')
-rw-r--r-- | bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java b/bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java new file mode 100644 index 0000000..69193e3 --- /dev/null +++ b/bcprov/src/main/java/org/bouncycastle/pqc/math/ntru/polynomial/Polynomial.java @@ -0,0 +1,42 @@ +package org.bouncycastle.pqc.math.ntru.polynomial; + +public interface Polynomial +{ + + /** + * Multiplies the polynomial by an <code>IntegerPolynomial</code>, + * taking the indices mod <code>N</code>. + * + * @param poly2 a polynomial + * @return the product of the two polynomials + */ + IntegerPolynomial mult(IntegerPolynomial poly2); + + /** + * Multiplies the polynomial by an <code>IntegerPolynomial</code>, + * taking the coefficient values mod <code>modulus</code> and the indices mod <code>N</code>. + * + * @param poly2 a polynomial + * @param modulus a modulus to apply + * @return the product of the two polynomials + */ + IntegerPolynomial mult(IntegerPolynomial poly2, int modulus); + + /** + * Returns a polynomial that is equal to this polynomial (in the sense that {@link #mult(IntegerPolynomial, int)} + * returns equal <code>IntegerPolynomial</code>s). The new polynomial is guaranteed to be independent of the original. + * + * @return a new <code>IntegerPolynomial</code>. + */ + IntegerPolynomial toIntegerPolynomial(); + + /** + * Multiplies the polynomial by a <code>BigIntPolynomial</code>, taking the indices mod N. Does not + * change this polynomial but returns the result as a new polynomial.<br> + * Both polynomials must have the same number of coefficients. + * + * @param poly2 the polynomial to multiply by + * @return a new polynomial + */ + BigIntPolynomial mult(BigIntPolynomial poly2); +} |