William Estrada wrote:
i2d_RSAPublicKey( RSA, NULL ) is to be used to get the size of an RSA
structure.
Yes it can and it does. It returns the value for the *public* key - the rest of
your code is looking at the *private* key.
Change the line:
Len = i2d_RSAPublicKey( My_RSA, NULL );
To this:
Len = i2d_RSAPrivateKey( My_RSA, NULL );
And then you get the expected output (although printing out the pointer to the
structure as an integer isn't exactly all that useful).
Size: 1024, Len: 608, RSA: 0
Size: 1024, Len: 608, RSA: 135062744
Public and private keys contain different values.
Have a look at things using 'openssl rsa'
Write the output of i2d for a public key out to a file and then:
openssl rsa -text -noout -inform der -in public.der
and write the output of i2d for a private key out to a file and then:
openssl rsa -text -noout -inform der -in private.der
Tim.
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