McElieceCCA2Primitives.smali

.class public final Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2Primitives;
.super Ljava/lang/Object;
.source "McElieceCCA2Primitives.java"


# direct methods
.method private constructor <init>()V
    .registers 1

    .prologue
    .line 21
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 22
    return-void
.end method

.method public static decryptionPrimitive(Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;)[Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;
    .registers 9

    .prologue
    .line 55
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getK()I

    move-result v2

    .line 56
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getP()Lorg/spongycastle/pqc/math/linearalgebra/Permutation;

    move-result-object v3

    .line 57
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getField()Lorg/spongycastle/pqc/math/linearalgebra/GF2mField;

    move-result-object v4

    .line 58
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getGoppaPoly()Lorg/spongycastle/pqc/math/linearalgebra/PolynomialGF2mSmallM;

    move-result-object v5

    .line 59
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getH()Lorg/spongycastle/pqc/math/linearalgebra/GF2Matrix;

    move-result-object v1

    .line 60
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PrivateKeyParameters;->getQInv()[Lorg/spongycastle/pqc/math/linearalgebra/PolynomialGF2mSmallM;

    move-result-object v6

    .line 63
    invoke-virtual {v3}, Lorg/spongycastle/pqc/math/linearalgebra/Permutation;->computeInverse()Lorg/spongycastle/pqc/math/linearalgebra/Permutation;

    move-result-object v0

    .line 66
    invoke-virtual {p1, v0}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;->multiply(Lorg/spongycastle/pqc/math/linearalgebra/Permutation;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v0

    check-cast v0, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    .line 69
    invoke-virtual {v1, v0}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Matrix;->rightMultiply(Lorg/spongycastle/pqc/math/linearalgebra/Vector;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v1

    check-cast v1, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    .line 72
    invoke-static {v1, v4, v5, v6}, Lorg/spongycastle/pqc/math/linearalgebra/GoppaCode;->syndromeDecode(Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;Lorg/spongycastle/pqc/math/linearalgebra/GF2mField;Lorg/spongycastle/pqc/math/linearalgebra/PolynomialGF2mSmallM;[Lorg/spongycastle/pqc/math/linearalgebra/PolynomialGF2mSmallM;)Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    move-result-object v1

    .line 73
    invoke-virtual {v0, v1}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;->add(Lorg/spongycastle/pqc/math/linearalgebra/Vector;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v0

    check-cast v0, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    .line 76
    invoke-virtual {v0, v3}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;->multiply(Lorg/spongycastle/pqc/math/linearalgebra/Permutation;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v0

    check-cast v0, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    .line 77
    invoke-virtual {v1, v3}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;->multiply(Lorg/spongycastle/pqc/math/linearalgebra/Permutation;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v1

    check-cast v1, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    .line 80
    invoke-virtual {v0, v2}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;->extractRightVector(I)Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    move-result-object v0

    .line 83
    const/4 v2, 0x2

    new-array v2, v2, [Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    const/4 v3, 0x0

    aput-object v0, v2, v3

    const/4 v0, 0x1

    aput-object v1, v2, v0

    return-object v2
.end method

.method public static encryptionPrimitive(Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PublicKeyParameters;Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;)Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;
    .registers 4

    .prologue
    .line 38
    invoke-virtual {p0}, Lorg/spongycastle/pqc/crypto/mceliece/McElieceCCA2PublicKeyParameters;->getMatrixG()Lorg/spongycastle/pqc/math/linearalgebra/GF2Matrix;

    move-result-object v0

    .line 39
    invoke-virtual {v0, p1}, Lorg/spongycastle/pqc/math/linearalgebra/GF2Matrix;->leftMultiplyLeftCompactForm(Lorg/spongycastle/pqc/math/linearalgebra/Vector;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v0

    .line 40
    invoke-virtual {v0, p2}, Lorg/spongycastle/pqc/math/linearalgebra/Vector;->add(Lorg/spongycastle/pqc/math/linearalgebra/Vector;)Lorg/spongycastle/pqc/math/linearalgebra/Vector;

    move-result-object v0

    check-cast v0, Lorg/spongycastle/pqc/math/linearalgebra/GF2Vector;

    return-object v0
.end method