[英]how to fix 'no such algorithm ecdsa for provider bc' while creating new wallet file using web3j
我在最新版本的 android studio 上執行此操作,最低 SDK 版本為 15 個依賴項:
> implementation fileTree(dir: 'libs', include: ['*.jar'])
> implementation 'com.android.support:appcompat-v7:28.0.0'
> implementation 'com.android.support.constraint:constraintlayout:1.1.3'
> testImplementation 'junit:junit:4.12' androidTestImplementation
> 'com.android.support.test:runner:1.0.2' androidTestImplementation
> 'com.android.support.test.espresso:espresso-core:3.0.2' implementation
> 'org.web3j:core:4.2.0-android' implementation
> 'com.android.support:multidex:1.0.3' implementation
> 'com.squareup.okhttp3:okhttp:3.14.0' implementation
> "io.reactivex.rxjava2:rxjava:2.2.2"
我的代碼是:
public String createWallet() throws Exception {
String path = Environment.getExternalStoragePublicDirectory(DIRECTORY_DOWNLOADS).getPath().toString();
String fileName = WalletUtils.generateNewWalletFile("password", new File(path));
return path + fileName;
}
@serso 提供了一個函數“setupBouncyCastle()”,您必須將其放入類中並在 onCreat 中調用它。 這替換了 Android 版本的充氣城堡! 就像他說的。 ^^
如果您正在准備發布版本, minifyEnabled 為 true 並面臨此異常:
java.security.NoSuchAlgorithmException: no such algorithm: ECDSA for provider BC
將這些行添加到 pro-gurd
-dontwarn java8.util.**
-dontwarn jnr.posix.**
-dontwarn com.kenai.**
#-keep class org.bouncycastle.**
-dontwarn org.bouncycastle.jce.provider.X509LDAPCertStoreSpi
-dontwarn org.bouncycastle.x509.util.LDAPStoreHelper
-keepclassmembers class org.web3j.protocol.** { *; }
-keepclassmembers class org.web3j.crypto.* { *; }
-keep class * extends org.web3j.abi.TypeReference
-keep class * extends org.web3j.abi.datatypes.Type
#-dontwarn java.lang.SafeVarargs
-dontwarn org.slf4j.**
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