diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/pqc/crypto/rainbow/RainbowParameters.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/pqc/crypto/rainbow/RainbowParameters.java | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/pqc/crypto/rainbow/RainbowParameters.java b/core/src/main/java/org/bouncycastle/pqc/crypto/rainbow/RainbowParameters.java new file mode 100644 index 00000000..147c55e9 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/pqc/crypto/rainbow/RainbowParameters.java @@ -0,0 +1,111 @@ +package org.bouncycastle.pqc.crypto.rainbow; + +import org.bouncycastle.crypto.CipherParameters; + +public class RainbowParameters + implements CipherParameters +{ + + /** + * DEFAULT PARAMS + */ + /* + * Vi = vinegars per layer whereas n is vu (vu = 33 = n) such that + * + * v1 = 6; o1 = 12-6 = 6 + * + * v2 = 12; o2 = 17-12 = 5 + * + * v3 = 17; o3 = 22-17 = 5 + * + * v4 = 22; o4 = 33-22 = 11 + * + * v5 = 33; (o5 = 0) + */ + private final int[] DEFAULT_VI = {6, 12, 17, 22, 33}; + + private int[] vi;// set of vinegar vars per layer. + + /** + * Default Constructor The elements of the array containing the number of + * Vinegar variables in each layer are set to the default values here. + */ + public RainbowParameters() + { + this.vi = this.DEFAULT_VI; + } + + /** + * Constructor with parameters + * + * @param vi The elements of the array containing the number of Vinegar + * variables per layer are set to the values of the input array. + */ + public RainbowParameters(int[] vi) + { + this.vi = vi; + try + { + checkParams(); + } + catch (Exception e) + { + e.printStackTrace(); + } + } + + private void checkParams() + throws Exception + { + if (vi == null) + { + throw new Exception("no layers defined."); + } + if (vi.length > 1) + { + for (int i = 0; i < vi.length - 1; i++) + { + if (vi[i] >= vi[i + 1]) + { + throw new Exception( + "v[i] has to be smaller than v[i+1]"); + } + } + } + else + { + throw new Exception( + "Rainbow needs at least 1 layer, such that v1 < v2."); + } + } + + /** + * Getter for the number of layers + * + * @return the number of layers + */ + public int getNumOfLayers() + { + return this.vi.length - 1; + } + + /** + * Getter for the number of all the polynomials in Rainbow + * + * @return the number of the polynomials + */ + public int getDocLength() + { + return vi[vi.length - 1] - vi[0]; + } + + /** + * Getter for the array containing the number of Vinegar-variables per layer + * + * @return the numbers of vinegars per layer + */ + public int[] getVi() + { + return this.vi; + } +} |