.class Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;
.super Ljava/lang/Object;
.source "CognitoUser.java"


# annotations
.annotation system Ldalvik/annotation/EnclosingClass;
    value = Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser;
.end annotation

.annotation system Ldalvik/annotation/InnerClass;
    accessFlags = 0x9
    name = "AuthenticationHelper"
.end annotation


# static fields
.field private static final DERIVED_KEY_INFO:Ljava/lang/String; = "Caldera Derived Key"

.field private static final DERIVED_KEY_SIZE:I = 0x10

.field private static final EPHEMERAL_KEY_LENGTH:I = 0x400

.field private static final GG:Ljava/math/BigInteger;

.field private static final HEX_N:Ljava/lang/String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

.field private static final KK:Ljava/math/BigInteger;

.field private static final N:Ljava/math/BigInteger;

.field private static final SECURE_RANDOM:Ljava/security/SecureRandom;

.field private static final THREAD_MESSAGE_DIGEST:Ljava/lang/ThreadLocal;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/lang/ThreadLocal<",
            "Ljava/security/MessageDigest;",
            ">;"
        }
    .end annotation
.end field


# instance fields
.field private A:Ljava/math/BigInteger;

.field private a:Ljava/math/BigInteger;

.field private poolName:Ljava/lang/String;


# direct methods
.method public static constructor <clinit>()V
    .locals 4

    .line 1
    new-instance v0, Ljava/math/BigInteger;

    const-string v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

    const/16 v2, 0x10

    invoke-direct {v0, v1, v2}, Ljava/math/BigInteger;-><init>(Ljava/lang/String;I)V

    sput-object v0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->N:Ljava/math/BigInteger;

    const-wide/16 v1, 0x2

    .line 2
    invoke-static {v1, v2}, Ljava/math/BigInteger;->valueOf(J)Ljava/math/BigInteger;

    move-result-object v1

    sput-object v1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->GG:Ljava/math/BigInteger;

    .line 3
    new-instance v2, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper$1;

    invoke-direct {v2}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper$1;-><init>()V

    sput-object v2, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->THREAD_MESSAGE_DIGEST:Ljava/lang/ThreadLocal;

    :try_start_0
    const-string v3, "SHA1PRNG"

    .line 4
    invoke-static {v3}, Ljava/security/SecureRandom;->getInstance(Ljava/lang/String;)Ljava/security/SecureRandom;

    move-result-object v3

    sput-object v3, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->SECURE_RANDOM:Ljava/security/SecureRandom;

    .line 5
    invoke-virtual {v2}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;

    move-result-object v2

    check-cast v2, Ljava/security/MessageDigest;

    .line 6
    invoke-virtual {v2}, Ljava/security/MessageDigest;->reset()V

    .line 7
    invoke-virtual {v0}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object v0

    invoke-virtual {v2, v0}, Ljava/security/MessageDigest;->update([B)V

    .line 8
    invoke-virtual {v1}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object v0

    invoke-virtual {v2, v0}, Ljava/security/MessageDigest;->digest([B)[B

    move-result-object v0

    .line 9
    new-instance v1, Ljava/math/BigInteger;

    const/4 v2, 0x1

    invoke-direct {v1, v2, v0}, Ljava/math/BigInteger;-><init>(I[B)V

    sput-object v1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->KK:Ljava/math/BigInteger;
    :try_end_0
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_0 .. :try_end_0} :catch_0

    return-void

    :catch_0
    move-exception v0

    .line 10
    new-instance v1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;

    invoke-virtual {v0}, Ljava/security/NoSuchAlgorithmException;->getMessage()Ljava/lang/String;

    move-result-object v2

    invoke-direct {v1, v2, v0}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;-><init>(Ljava/lang/String;Ljava/lang/Throwable;)V

    throw v1
.end method

.method public constructor <init>(Ljava/lang/String;)V
    .locals 3

    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 2
    :cond_0
    new-instance v0, Ljava/math/BigInteger;

    const/16 v1, 0x400

    sget-object v2, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->SECURE_RANDOM:Ljava/security/SecureRandom;

    invoke-direct {v0, v1, v2}, Ljava/math/BigInteger;-><init>(ILjava/util/Random;)V

    sget-object v1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->N:Ljava/math/BigInteger;

    invoke-virtual {v0, v1}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    iput-object v0, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->a:Ljava/math/BigInteger;

    .line 3
    sget-object v2, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->GG:Ljava/math/BigInteger;

    invoke-virtual {v2, v0, v1}, Ljava/math/BigInteger;->modPow(Ljava/math/BigInteger;Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    iput-object v0, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->A:Ljava/math/BigInteger;

    .line 4
    invoke-virtual {v0, v1}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    sget-object v1, Ljava/math/BigInteger;->ZERO:Ljava/math/BigInteger;

    invoke-virtual {v0, v1}, Ljava/math/BigInteger;->equals(Ljava/lang/Object;)Z

    move-result v0

    if-nez v0, :cond_0

    const-string v0, "_"

    .line 5
    invoke-virtual {p1, v0}, Ljava/lang/String;->contains(Ljava/lang/CharSequence;)Z

    move-result v1

    if-eqz v1, :cond_1

    const/4 v1, 0x2

    .line 6
    invoke-virtual {p1, v0, v1}, Ljava/lang/String;->split(Ljava/lang/String;I)[Ljava/lang/String;

    move-result-object p1

    const/4 v0, 0x1

    aget-object p1, p1, v0

    iput-object p1, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->poolName:Ljava/lang/String;

    goto :goto_0

    .line 7
    :cond_1
    iput-object p1, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->poolName:Ljava/lang/String;

    :goto_0
    return-void
.end method

.method public static synthetic access$3000()Ljava/math/BigInteger;
    .locals 1

    .line 1
    sget-object v0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->N:Ljava/math/BigInteger;

    return-object v0
.end method


# virtual methods
.method public getA()Ljava/math/BigInteger;
    .locals 1

    .line 1
    iget-object v0, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->A:Ljava/math/BigInteger;

    return-object v0
.end method

.method public getPasswordAuthenticationKey(Ljava/lang/String;Ljava/lang/String;Ljava/math/BigInteger;Ljava/math/BigInteger;)[B
    .locals 5

    .line 1
    sget-object v0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->THREAD_MESSAGE_DIGEST:Ljava/lang/ThreadLocal;

    invoke-virtual {v0}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;

    move-result-object v0

    check-cast v0, Ljava/security/MessageDigest;

    .line 2
    invoke-virtual {v0}, Ljava/security/MessageDigest;->reset()V

    .line 3
    iget-object v1, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->A:Ljava/math/BigInteger;

    invoke-virtual {v1}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object v1

    invoke-virtual {v0, v1}, Ljava/security/MessageDigest;->update([B)V

    .line 4
    new-instance v1, Ljava/math/BigInteger;

    invoke-virtual {p3}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object v2

    invoke-virtual {v0, v2}, Ljava/security/MessageDigest;->digest([B)[B

    move-result-object v2

    const/4 v3, 0x1

    invoke-direct {v1, v3, v2}, Ljava/math/BigInteger;-><init>(I[B)V

    .line 5
    sget-object v2, Ljava/math/BigInteger;->ZERO:Ljava/math/BigInteger;

    invoke-virtual {v1, v2}, Ljava/math/BigInteger;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-nez v2, :cond_0

    .line 6
    invoke-virtual {v0}, Ljava/security/MessageDigest;->reset()V

    .line 7
    iget-object v2, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->poolName:Ljava/lang/String;

    sget-object v4, Lcom/amazonaws/util/StringUtils;->UTF8:Ljava/nio/charset/Charset;

    invoke-virtual {v2, v4}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object v2

    invoke-virtual {v0, v2}, Ljava/security/MessageDigest;->update([B)V

    .line 8
    invoke-virtual {p1, v4}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/security/MessageDigest;->update([B)V

    const-string p1, ":"

    .line 9
    invoke-virtual {p1, v4}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/security/MessageDigest;->update([B)V

    .line 10
    invoke-virtual {p2, v4}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/security/MessageDigest;->digest([B)[B

    move-result-object p1

    .line 11
    invoke-virtual {v0}, Ljava/security/MessageDigest;->reset()V

    .line 12
    invoke-virtual {p4}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object p2

    invoke-virtual {v0, p2}, Ljava/security/MessageDigest;->update([B)V

    .line 13
    new-instance p2, Ljava/math/BigInteger;

    invoke-virtual {v0, p1}, Ljava/security/MessageDigest;->digest([B)[B

    move-result-object p1

    invoke-direct {p2, v3, p1}, Ljava/math/BigInteger;-><init>(I[B)V

    .line 14
    sget-object p1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->KK:Ljava/math/BigInteger;

    sget-object p4, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->GG:Ljava/math/BigInteger;

    sget-object v0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->N:Ljava/math/BigInteger;

    invoke-virtual {p4, p2, v0}, Ljava/math/BigInteger;->modPow(Ljava/math/BigInteger;Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p4

    invoke-virtual {p1, p4}, Ljava/math/BigInteger;->multiply(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    invoke-virtual {p3, p1}, Ljava/math/BigInteger;->subtract(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    iget-object p3, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->a:Ljava/math/BigInteger;

    .line 15
    invoke-virtual {v1, p2}, Ljava/math/BigInteger;->multiply(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p2

    invoke-virtual {p3, p2}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p2

    invoke-virtual {p1, p2, v0}, Ljava/math/BigInteger;->modPow(Ljava/math/BigInteger;Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    invoke-virtual {p1, v0}, Ljava/math/BigInteger;->mod(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object p1

    :try_start_0
    const-string p2, "HmacSHA256"

    .line 16
    invoke-static {p2}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/util/Hkdf;->getInstance(Ljava/lang/String;)Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/util/Hkdf;

    move-result-object p2
    :try_end_0
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_0 .. :try_end_0} :catch_0

    .line 17
    invoke-virtual {p1}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object p1

    invoke-virtual {v1}, Ljava/math/BigInteger;->toByteArray()[B

    move-result-object p3

    invoke-virtual {p2, p1, p3}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/util/Hkdf;->init([B[B)V

    const/16 p1, 0x10

    const-string p3, "Caldera Derived Key"

    .line 18
    invoke-virtual {p2, p3, p1}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/util/Hkdf;->deriveKey(Ljava/lang/String;I)[B

    move-result-object p1

    return-object p1

    :catch_0
    move-exception p1

    .line 19
    new-instance p2, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;

    invoke-virtual {p1}, Ljava/security/NoSuchAlgorithmException;->getMessage()Ljava/lang/String;

    move-result-object p3

    invoke-direct {p2, p3, p1}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;-><init>(Ljava/lang/String;Ljava/lang/Throwable;)V

    throw p2

    .line 20
    :cond_0
    new-instance p1, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;

    const-string p2, "Hash of A and B cannot be zero"

    invoke-direct {p1, p2}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method public geta()Ljava/math/BigInteger;
    .locals 1

    .line 1
    iget-object v0, p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/CognitoUser$AuthenticationHelper;->a:Ljava/math/BigInteger;

    return-object v0
.end method