Android Question jarsigner error: java.security.InvalidKeyException: The security strength of SHA-1 digest algorithm

[hatzisn]

Hi everyone,

When I try to compile with a private key I have this problem:

B4A Version: 7.80
Parsing code.    (0.00s)
Compiling code.    (0.02s)
   
ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code.    (0.03s)
Organizing libraries.    (0.00s)
Generating R file.    (0.05s)
Compiling generated Java code.    (0.90s)
Convert byte code - optimized dex.    (0.39s)
Packaging files.    (0.12s)
Copying libraries resources    (0.00s)
Signing package file (private key).    Error

jarsigner error: java.security.InvalidKeyException: The security strength of SHA-1 digest algorithm is not sufficient for this key size

When I try to compile with debug key everything works ok.
I was using Java 8 update 162 when this error occured. I upgraded to the latest java 8 update 172 and have set the compiler to: "C:\Program Files\Java\jdk1.8.0_172\bin\javac.exe"

The android.jar is set to: "C:\B4A\android-sdk\platforms\android-27\android.jar"

I cannot compile anything anymore and I REALLY hate unpleasant surprises.


Any solution will be highly appreciated...
Thanks,
Nikos

 

[hatzisn]

I have found this and this seems to work for now:

D:\Java\jdk-9.0.4\bin\keytool -genkey -v -keystore E:\MR_B4A\mr.keystore -alias b4a -validity 3650 -keysize 1024

in this post:
https://www.b4x.com/android/forum/threads/problem-with-app-sign-keystore.89510/#post-566033

Is validity a number of days?
What happened to b4a and cannot create keystore keys any more?

 

[DonManfred]

Is validity a number of days?

Check the Docs
https://docs.oracle.com/javase/7/docs/technotes/tools/windows/keytool.html

{-validity valDays}