How to encode a string using a .der file?

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Hi everyone, I'm new to certificates and I need to encode a string using a .der file which contains a public key. I have to use padding PKCS#1 V1.5. Has anyone done this before, can you refer me to the right place?

Posted 23-Nov-15 12:43pm

xxovariusxx

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Patrice T 23-Nov-15 19:17pm

Nothing on Google ?

xxovariusxx 24-Nov-15 9:29am

nothing, some implementations use the file transforming it into a byte[], however these implementations use a .cer file not .der so I get an exeption. Also, any mention of PKCS#1 V1.5 redirects me to the documentation of RSA but nothing mentions .der files

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