Hey I got this. Sorry I was confused with the length. BIO_read returns the length which I was able to use to get the MD5. Problem solved!!! Many thanks. --Pashant On 19 March 2015 at 14:24, Prashant Bapat <prashant at apigee.com> wrote: > Hi, > > My problem is if the string that I want to decode start with null > terminated char (as in a SSH pubkey), the base64_decode does not return > anything at all. The encoded string itself does not have null terminated > chars but rather the decoded result. The "buffer" being returned is empty. > How to overcome this ? > > Also my C is relatively rusty, it would be great help if someone could > look look at my code and suggest what I'm doing wrong. > > Also, I tried to use the EVP_DecodeBlock function with same result. It > decodes everything except the SSH pubkey. > > Thanks. > --Prashant > > On 18 March 2015 at 22:56, Scott Neugroschl <scott_n at xypro.com> wrote: > >> I believe the SSH pubkey is binary data, not ASCII, so strlen() will >> not work on it if it has embedded NUL chars. >> >> As Dave Thompson suggested, instead of strlen(), use the length returned >> from BIO_read. >> >> >> >> >> >> *From:* openssl-users [mailto:openssl-users-bounces at openssl.org] *On >> Behalf Of *Prashant Bapat >> *Sent:* Wednesday, March 18, 2015 8:08 AM >> *To:* openssl-users >> *Subject:* Re: [openssl-users] base64 decode in C >> >> >> >> Hi Dave and Walter, >> >> >> >> Thanks for our reply. >> >> >> >> I'm not doing anything different for the ssh pubkey. I'm able to decode >> it using the "openssl enc -base64 -d -A" command. But not using the C >> program. >> >> >> >> Attaching my entire code here. After getting the base64 decoded I'm >> calculating the MD5 sum and printing it. This works for a regular string >> but not for SSH pubkey. >> >> >> >> Thanks again. >> >> >> >> --Prashant >> >> >> >> On 18 March 2015 at 18:04, Walter H. <Walter.H at mathemainzel.info> wrote: >> >> Hi, >> >> before calling this function, >> remove any whitespace; >> >> Walter >> >> >> >> _______________________________________________ >> openssl-users mailing list >> To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users >> >> >> >> _______________________________________________ >> openssl-users mailing list >> To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20150319/dfc30218/attachment.html>
