> From: owner-openssl-us...@openssl.org On Behalf Of Graham Leggett
> Sent: Friday, 16 November, 2012 10:08
> To: openssl-users@openssl.org
> Subject: Re: Usage of d2i_RSA_PUBKEY function!!
>
> On 16 Nov 2012, at 4:37 PM, PraveenPVS
> <meetpraveen...@gmail.com> wrote:
>
> > I need to load RSA Public key which is stored in the char
> buffer. I came
> > across d2i_RSA_PUBKEY function to do the same (Please
> correct me if I am
> > wrong here).
>
> The "d2i" in the function you're trying to use means "from
> DER encoded to internal", you'll see a whole lot of
> complementary functions with "i2d" in them that do the opposite.
>
> The data you've shown looks like it has been PEM encoded, not
> DER encoded:
>
> >
> loadRSAPubKey("MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0ye
> pYbVklwYuwGEmenQhVwyddHGdM26rZqWG5tFFPYz1QA51EJ44thSejrbRKHqV/
> EmqU8wwuFeaDmxnVz6UhG3HfjuTbAkkuZ+boEIealr/Ml+kHqRgzQ6G1rP9+5g
oboZzlpB9b8zYvp+>
5my5xFCd8OqyoKKyoHBJ3Tf0NCSstow7k0W/5JMeDa844HpCK4rOxlUaIGsDGT
> C/XIJ93EQs8yT4js5iw++pJslQvh1RzeQtzLQ8xNGYKlr9RyIvh2S28qXb+qfE
> x7r+kG8RjS4jc3E3XR/nja7HXnAFWCgF/cRcj5aQHq02scW8Vi+iBS/A1Y5RD2
> QMxJqY1yxC28QIDAQAB");
>
> To convert the PEM encoding, try wrap your buffer in a BIO
> and call PEM_read_bio_X509(). "man PEM_read_bio_X509" for
> details. Make sure you preserve the "-----" bars before and
> after the PEM encoded certificate, as they form part of the
> PEM encoding and your data may be ignored if you chop them off.
Those need to be dashes-BEGIN and END *lines* before and after,
and you also must keep line breaks in the body. b64BIO by default
rejects base64 lines longer than the traditional PEM/MIME limit
(somewhere around 76-80, I don't remember exactly). For an
explicit b64BIO you can control this, but not within PEM_read*.
Alternatively, convert the base64 to binary (EVP_DecodeBlock
*doesn't* enforce the line length limit) and use d2i_*.
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