[erlang-questions] Dealing with public/private keys stored in *.pem files

Jakob Cederlund <>
Thu Jan 31 14:42:36 CET 2008

there is not yet a public api for this in OTP. However, the 
undocumented, unsupported function ssl_pkix:decode_rsa_keyfile/2 does 
just this. It reads a .pem keyfile and returns a record with exponent 
and modulus, and other fields. It is unsupported, so it might be moved 
(or even removed) in future releases of OTP.

Daniel Kwiecinski wrote:
> Hi,
>    As far as I know the crypto module (app) handles rsa's private keys 
> as a list of two binaries (exponent and modulus). How can I obtain 
> these from base64 encoded *.pem files?
> -- 
> Kind Regards,
> Daniel Kwiecinski
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