CognitoSecretHash.smali

.class public final Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/util/CognitoSecretHash;
.super Ljava/lang/Object;
.source "CognitoSecretHash.java"


# static fields
.field private static final HMAC_SHA_256:Ljava/lang/String; = "HmacSHA256"


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

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

    return-void
.end method

.method public static getSecretHash(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
    .registers 5

    if-eqz p0, :cond_4d

    if-eqz p1, :cond_45

    .line 1
    invoke-static {p2}, Lcom/amazonaws/util/StringUtils;->isBlank(Ljava/lang/CharSequence;)Z

    move-result v0

    if-eqz v0, :cond_c

    const/4 p0, 0x0

    return-object p0

    .line 2
    :cond_c
    new-instance v0, Ljavax/crypto/spec/SecretKeySpec;

    sget-object v1, Lcom/amazonaws/util/StringUtils;->UTF8:Ljava/nio/charset/Charset;

    invoke-virtual {p2, v1}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p2

    const-string v1, "HmacSHA256"

    invoke-direct {v0, p2, v1}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    .line 3
    :try_start_19
    invoke-static {v1}, Ljavax/crypto/Mac;->getInstance(Ljava/lang/String;)Ljavax/crypto/Mac;

    move-result-object p2

    .line 4
    invoke-virtual {p2, v0}, Ljavax/crypto/Mac;->init(Ljava/security/Key;)V

    .line 5
    sget-object v0, Lcom/amazonaws/util/StringUtils;->UTF8:Ljava/nio/charset/Charset;

    invoke-virtual {p0, v0}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p0

    invoke-virtual {p2, p0}, Ljavax/crypto/Mac;->update([B)V

    .line 6
    sget-object p0, Lcom/amazonaws/util/StringUtils;->UTF8:Ljava/nio/charset/Charset;

    invoke-virtual {p1, p0}, Ljava/lang/String;->getBytes(Ljava/nio/charset/Charset;)[B

    move-result-object p0

    invoke-virtual {p2, p0}, Ljavax/crypto/Mac;->doFinal([B)[B

    move-result-object p0

    .line 7
    new-instance p1, Ljava/lang/String;

    invoke-static {p0}, Lcom/amazonaws/util/Base64;->encode([B)[B

    move-result-object p0

    invoke-direct {p1, p0}, Ljava/lang/String;-><init>([B)V
    :try_end_3c
    .catch Ljava/lang/Exception; {:try_start_19 .. :try_end_3c} :catch_3d

    return-object p1

    .line 8
    :catch_3d
    new-instance p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;

    const-string p1, "errors in HMAC calculation"

    invoke-direct {p0, p1}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoInternalErrorException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 9
    :cond_45
    new-instance p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoParameterInvalidException;

    const-string p1, "client ID cannot be null"

    invoke-direct {p0, p1}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoParameterInvalidException;-><init>(Ljava/lang/String;)V

    throw p0

    .line 10
    :cond_4d
    new-instance p0, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoParameterInvalidException;

    const-string/jumbo p1, "user ID cannot be null"

    invoke-direct {p0, p1}, Lcom/amazonaws/mobileconnectors/cognitoidentityprovider/exceptions/CognitoParameterInvalidException;-><init>(Ljava/lang/String;)V

    throw p0
.end method