OpenSSLECDHKeyAgreement.smali

.class public final Lorg/conscrypt/OpenSSLECDHKeyAgreement;
.super Ljavax/crypto/KeyAgreementSpi;
.source ""


# instance fields
.field private mExpectedResultLength:I

.field private mOpenSslPrivateKey:Lorg/conscrypt/OpenSSLKey;

.field private mResult:[B


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

    invoke-direct {p0}, Ljavax/crypto/KeyAgreementSpi;-><init>()V

    return-void
.end method

.method private checkCompleted()V
    .registers 3

    iget-object v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    if-eqz v0, :cond_5

    return-void

    :cond_5
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "Key agreement not completed"

    invoke-direct {v0, v1}, Ljava/lang/IllegalStateException;-><init>(Ljava/lang/String;)V

    throw v0
.end method


# virtual methods
.method public engineDoPhase(Ljava/security/Key;Z)Ljava/security/Key;
    .registers 6

    iget-object v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mOpenSslPrivateKey:Lorg/conscrypt/OpenSSLKey;

    if-eqz v0, :cond_9f

    if-eqz p2, :cond_97

    if-eqz p1, :cond_8f

    instance-of p2, p1, Ljava/security/PublicKey;

    if-eqz p2, :cond_74

    check-cast p1, Ljava/security/PublicKey;

    invoke-static {p1}, Lorg/conscrypt/OpenSSLKey;->fromPublicKey(Ljava/security/PublicKey;)Lorg/conscrypt/OpenSSLKey;

    move-result-object p1

    iget p2, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mExpectedResultLength:I

    new-array p2, p2, [B

    invoke-virtual {p1}, Lorg/conscrypt/OpenSSLKey;->getNativeRef()Lorg/conscrypt/NativeRef$EVP_PKEY;

    move-result-object p1

    iget-object v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mOpenSslPrivateKey:Lorg/conscrypt/OpenSSLKey;

    invoke-virtual {v0}, Lorg/conscrypt/OpenSSLKey;->getNativeRef()Lorg/conscrypt/NativeRef$EVP_PKEY;

    move-result-object v0

    const/4 v1, 0x0

    invoke-static {p2, v1, p1, v0}, Lorg/conscrypt/NativeCrypto;->ECDH_compute_key([BILorg/conscrypt/NativeRef$EVP_PKEY;Lorg/conscrypt/NativeRef$EVP_PKEY;)I

    move-result p1

    const/4 v0, -0x1

    if-eq p1, v0, :cond_5d

    iget v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mExpectedResultLength:I

    if-ne p1, v0, :cond_2d

    goto :goto_38

    :cond_2d
    if-ge p1, v0, :cond_3c

    new-array p1, p1, [B

    iget-object v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    array-length v2, v0

    invoke-static {p2, v1, v0, v1, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    move-object p2, p1

    :goto_38
    iput-object p2, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    const/4 p1, 0x0

    return-object p1

    :cond_3c
    new-instance p2, Ljava/lang/RuntimeException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Engine produced a longer than expected result. Expected: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    iget v1, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mExpectedResultLength:I

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    const-string v1, ", actual: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p2, p1}, Ljava/lang/RuntimeException;-><init>(Ljava/lang/String;)V

    throw p2

    :cond_5d
    new-instance p2, Ljava/lang/RuntimeException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Engine returned "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p2, p1}, Ljava/lang/RuntimeException;-><init>(Ljava/lang/String;)V

    throw p2

    :cond_74
    new-instance p2, Ljava/security/InvalidKeyException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Not a public key: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/Object;->getClass()Ljava/lang/Class;

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/Object;)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p2, p1}, Ljava/security/InvalidKeyException;-><init>(Ljava/lang/String;)V

    throw p2

    :cond_8f
    new-instance p1, Ljava/security/InvalidKeyException;

    const-string p2, "key == null"

    invoke-direct {p1, p2}, Ljava/security/InvalidKeyException;-><init>(Ljava/lang/String;)V

    throw p1

    :cond_97
    new-instance p1, Ljava/lang/IllegalStateException;

    const-string p2, "ECDH only has one phase"

    invoke-direct {p1, p2}, Ljava/lang/IllegalStateException;-><init>(Ljava/lang/String;)V

    throw p1

    :cond_9f
    new-instance p1, Ljava/lang/IllegalStateException;

    const-string p2, "Not initialized"

    invoke-direct {p1, p2}, Ljava/lang/IllegalStateException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method protected engineGenerateSecret([BI)I
    .registers 6

    invoke-direct {p0}, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->checkCompleted()V

    array-length v0, p1

    sub-int/2addr v0, p2

    iget-object v1, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    array-length v2, v1

    if-gt v2, v0, :cond_13

    const/4 v0, 0x0

    array-length v2, v1

    invoke-static {v1, v0, p1, p2, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    iget-object p1, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    array-length p1, p1

    return p1

    :cond_13
    new-instance p1, Lorg/conscrypt/ShortBufferWithoutStackTraceException;

    new-instance p2, Ljava/lang/StringBuilder;

    invoke-direct {p2}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Needed: "

    invoke-virtual {p2, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    iget-object v1, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    array-length v1, v1

    invoke-virtual {p2, v1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    const-string v1, ", available: "

    invoke-virtual {p2, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p2, v0}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {p2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p2

    invoke-direct {p1, p2}, Lorg/conscrypt/ShortBufferWithoutStackTraceException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method protected engineGenerateSecret(Ljava/lang/String;)Ljavax/crypto/SecretKey;
    .registers 4

    invoke-direct {p0}, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->checkCompleted()V

    new-instance v0, Ljavax/crypto/spec/SecretKeySpec;

    invoke-virtual {p0}, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->engineGenerateSecret()[B

    move-result-object v1

    invoke-direct {v0, v1, p1}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    return-object v0
.end method

.method protected engineGenerateSecret()[B
    .registers 2

    invoke-direct {p0}, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->checkCompleted()V

    iget-object v0, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mResult:[B

    return-object v0
.end method

.method protected engineInit(Ljava/security/Key;Ljava/security/SecureRandom;)V
    .registers 5

    if-eqz p1, :cond_41

    instance-of p2, p1, Ljava/security/PrivateKey;

    if-eqz p2, :cond_26

    check-cast p1, Ljava/security/PrivateKey;

    invoke-static {p1}, Lorg/conscrypt/OpenSSLKey;->fromPrivateKey(Ljava/security/PrivateKey;)Lorg/conscrypt/OpenSSLKey;

    move-result-object p1

    new-instance p2, Lorg/conscrypt/NativeRef$EC_GROUP;

    invoke-virtual {p1}, Lorg/conscrypt/OpenSSLKey;->getNativeRef()Lorg/conscrypt/NativeRef$EVP_PKEY;

    move-result-object v0

    invoke-static {v0}, Lorg/conscrypt/NativeCrypto;->EC_KEY_get1_group(Lorg/conscrypt/NativeRef$EVP_PKEY;)J

    move-result-wide v0

    invoke-direct {p2, v0, v1}, Lorg/conscrypt/NativeRef$EC_GROUP;-><init>(J)V

    invoke-static {p2}, Lorg/conscrypt/NativeCrypto;->EC_GROUP_get_degree(Lorg/conscrypt/NativeRef$EC_GROUP;)I

    move-result p2

    add-int/lit8 p2, p2, 0x7

    div-int/lit8 p2, p2, 0x8

    iput p2, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mExpectedResultLength:I

    iput-object p1, p0, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->mOpenSslPrivateKey:Lorg/conscrypt/OpenSSLKey;

    return-void

    :cond_26
    new-instance p2, Ljava/security/InvalidKeyException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Not a private key: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {p1}, Ljava/lang/Object;->getClass()Ljava/lang/Class;

    move-result-object p1

    invoke-virtual {v0, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/Object;)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {p2, p1}, Ljava/security/InvalidKeyException;-><init>(Ljava/lang/String;)V

    throw p2

    :cond_41
    new-instance p1, Ljava/security/InvalidKeyException;

    const-string p2, "key == null"

    invoke-direct {p1, p2}, Ljava/security/InvalidKeyException;-><init>(Ljava/lang/String;)V

    throw p1
.end method

.method protected engineInit(Ljava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;Ljava/security/SecureRandom;)V
    .registers 4

    if-nez p2, :cond_6

    invoke-virtual {p0, p1, p3}, Lorg/conscrypt/OpenSSLECDHKeyAgreement;->engineInit(Ljava/security/Key;Ljava/security/SecureRandom;)V

    return-void

    :cond_6
    new-instance p1, Ljava/security/InvalidAlgorithmParameterException;

    const-string p2, "No algorithm parameters supported"

    invoke-direct {p1, p2}, Ljava/security/InvalidAlgorithmParameterException;-><init>(Ljava/lang/String;)V

    throw p1
.end method