[erlang-questions] crypto rsa encryption

trevorw <>
Thu Oct 28 19:40:57 CEST 2010


> Hello.
>
> I'm trying to get rsa encryption with crypto module. With PKCS1 padding
> scheme it works ok, but 'rsa_no_padding' option makes
> crypto:rsa_public_encrypt to raise:
> ** exception error: encrypt_failed.
>
> My system:
> otp: R13B03, R13B04, R14B
> Ubuntu 9.10
> OpenSSL 0.9.8g 19 Oct 2007
>
> Any ideas what the problem is?
>
> --
> Sergei Fomin
>

Hi Sergei

With RSA_NO_PADDING the size of your input needs to be exactly the same
size as your RSA key, otherwise you need to add padding yourself.

Regards,
Trevor




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