Thank you for your response. I am Base64 decoding the signatureValue, modulus and exponent but if I check the exponent length it is zero after decoding. The modulus length seems to vary after decoding maybe because there is a null in the buffer. I think that my Base64 decoding code is working ok because I use it to decode the response into the raw xml.
When I assign the modulus and exponent to the structure I do the following to convert to a big number: rsa_struct_ptr->n = BN_bin2bn(modulus, strlen(modulus), NULL); rsa_struct_ptr->e = BN_bin2bn(exponent, strlen(exponent), NULL); At the moment the error I get is "bignum routines:BN_mod_inverse:no inverse" but I think this is because my exponent length is zero and maybe the modulus length is incorrect. Could you offer any further suggestions please? Thanks Chris ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
