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Home/ Questions/Q 7825925
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Editorial Team
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Editorial Team
Asked: June 2, 20262026-06-02T09:12:15+00:00 2026-06-02T09:12:15+00:00

I was trying to encrypt data using AES algorithm. However, with the following exception

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I was trying to encrypt data using AES algorithm.
However, with the following exception has occurred.

java.security.NoSuchAlgorithmException:
    Cannot find any provider supporting AES/ECB/PKCS7PADDING

Someone know a solution to this issue?
My JDK’s version is 1.7.

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  1. Editorial Team
    Editorial Team
    2026-06-02T09:12:16+00:00Added an answer on June 2, 2026 at 9:12 am

    You don’t want to specify PKCS#7 padding for block cipher use. You want to specify PKCS#5 padding. PKCS#5 is specified for use with block ciphers while PKCS#7 is not (it’s use for different places like in S/MIME). I will point out that PKCS#5 and PKCS#7 actually specify exactly the same type of padding (they are the same!), but it’s called #5 when used in this context. 🙂

    So, instead of "AES/ECB/PKCS7PADDING", you want "AES/ECB/PKCS5PADDING". This is a cipher implementation that every implementation of the Java platform is required to support. See the documentation of the Cipher class for more details.

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