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Editorial Team
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Asked: 2026-05-16T10:49:26+00:00

I have seen the example here . All well and good and I understand

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I have seen the example here. All well and good and I understand it, however it relies on the bounceycastle library for the provider. I don’t want to bundle any additional third party libraries with my app if I can help it. I don’t need fort knox style security, just some basic symmetric encryption for transmitting over the wire. How can I do basic encryption on Android with out third party libraries?

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  1. Editorial Team

    Well BouncyCastle is included in Android, as you can see if you would try to include it you would get: D/dalvikvm( 9268): DexOpt: not verifying 'Lorg/bouncycastle/x509/extension/SubjectKeyIdentifierStructure;': multiple definitions and so on.

    However, not all algorithms are implemented – you would get an NoSuchAlgorithmException.
    In Android 2.2 I found these to be implemented:

    PBEWITHSHAAND128BITAES-CBC-BC
    PBEWITHSHAAND3-KEYTRIPLEDES-CBC
    1.2.840.113549.1.1.7
    PBEWITHSHA256AND256BITAES-CBC-BC
    PBEWITHSHAAND192BITAES-CBC-BC
    DESEDE
    DES
    1.2.840.113549.3.7
    PBEWITHSHAAND2-KEYTRIPLEDES-CBC
    1.3.14.3.2.7
    PBEWITHSHA256AND192BITAES-CBC-BC
    PBEWITHSHAAND256BITAES-CBC-BC
    PBEWITHSHAAND40BITRC2-CBC
    AES
    2.16.840.1.101.3.4.1.42
    PBEWITHSHA256AND128BITAES-CBC-BC
    2.16.840.1.101.3.4.1.22
    2.16.840.1.101.3.4.1.2

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