Hi all,
I am attempting to import a RSA Public Key file generated by JRE 5.0 using
OpenSSL.
As I understand it, JRE's RSA Public Key is in X.509's SubjectPublicKeyInfo
structure. I saved the byte array returned by JRE's RSAPublicKey.getEncoded()
into a file.
Now I like to import this byte array into a C program using OpenSSL. I am
using Ubuntu 6.06 (i386) with OpenSSL version 0.9.8a 11 Oct 2005.
>From reading through /usr/include/openssl/x509.h, I tried to use these two
>functions:
d2i_RSAPublicKey() and d2i_RSAPublicKey_fp() functions.
I tried to use d2i_RSAPublicKey_fp() first, here is a snippet:
FILE* keyFilePtr = fopen("keyfile.dat", "rb");
...
RSA* rsaKeyPtr = d2i_RSAPublicKey_fp(keyFilePtr, NULL);
Now, when I check `rsaKeyPtr` it is NULL. So I used ERR_error_string_n() to
show the error message and this is what I got:
error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error
The same thing happens when I store the content of the JRE RSA PublicKey file
into an array of unsigned char and then used d2i_RSAPublicKey().
Any ideas? Has anyone done something like this successfully before?
My ultimate aim is to import JRE RSA Public Key from a server over a network.
Thanks.
Hon Hwang.
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