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Asked: 2026-05-25T06:03:05+00:00

Ref: Android encryption/decryption issue (AES) I am building an android app which requires aes

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Ref: Android encryption/decryption issue (AES)

I am building an android app which requires aes decryption of a really large package (~50Mb) and it is really slow when implemented in android’s inbuilt aes decryption mechanism (around 5 minutes).

Based on the above posts in SO, I attempted to use ndk and tried to download native libraries (openssl) to use for this app. However, openssl for android has a really large number of files and I do not know which ones to use to create the .so file.

I am quite inexperienced with the use of ndk and native code in android apps and would find any suggestions/sample code on how to use openssl library for aes decryption really useful.

Thanks in advance,
Naveen

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  1. Editorial Team

    Try SpongyCastle its a repackaged BouncyCastle that wont conflict with the one released with Android. The one on Android systems is old (if you even have a release of Android that includes it).

    This should be all you need.

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