Thanks all for your help - I've finally managed to read the keys (now I
have to also
write a code that will write keys in the same format, but that shouldn't
be much of
a problem).
Documents which helped me were the PKCS#1 v2.1 specification (for the
format of
the key certificates) and the
On Tue 10/02/09 10:53 PM , Michael Sierchio ku...@tenebras.com sent:
Tomasz Kaźmierczak wrote:
I've managed to base64 decode a public key (at least I think so;).
Now I'm trying to understand how to interpret the key data. I've found the
definitions of RSAPublicKey and RSAPrivateKey structures
Thanks,
I've managed to find a direct link to the X.690 documentation on
Wikipedia
(http://en.wikipedia.org/wiki/Basic_Encoding_Rules#External_links). Now
things are clarifying quickly.
Kyle Hamilton pisze:
For information on how they're encoded, please see ITU recommendation
X.690 (DER).
I've managed to base64 decode a public key (at least I think so;).
Now I'm trying to understand how to interpret the key data. I've found the
definitions of RSAPublicKey and RSAPrivateKey structures (in the
PKCS #1: RSA Cryptography Standard), but there is no information
about what are the
Tomasz Kaźmierczak wrote:
I've managed to base64 decode a public key (at least I think so;).
Now I'm trying to understand how to interpret the key data. I've found the
definitions of RSAPublicKey and RSAPrivateKey structures (in the
PKCS #1: RSA Cryptography Standard), but there is no
For information on how they're encoded, please see ITU recommendation
X.690 (DER). The full documentation on ASN.1 (the notation language)
can be found in ITU recommendation X.680; you can also see
http://www.oss.com/asn1/dubuisson.html (for a complete overview) and
Thanks for the link, but I've already seen that, and unfortunately it
didn't help...
When I open the PEM files with keys in a plain text editor, the contents
are different than what's shown on the linked page. In stead of:
-BEGIN RSA PRIVATE KEY-
Proc-Type: 4,ENCRYPTED
DEK-Info:
If it says -BEGIN RSA PRIVATE KEY-, then it is an
unencrypted PKCS#1 RSA key structure which contains private exponent,
public exponent, and modulus.
-Kyle H
On Fri, Feb 6, 2009 at 9:34 AM, Tomasz Kaźmierczak tome...@wp.eu wrote:
Thanks for the link, but I've already seen that, and
Ok. And it is of course base64 encoded, right?
And what about the public key (-BEGIN RSA PUBLIC KEY-)? It looks
the same way as the private key file, but it is shorter.
Kyle Hamilton pisze:
If it says -BEGIN RSA PRIVATE KEY-, then it is an
unencrypted PKCS#1 RSA key structure
On Fri, Feb 06, 2009, Tomasz Ka??mierczak wrote:
Ok. And it is of course base64 encoded, right?
And what about the public key (-BEGIN RSA PUBLIC KEY-)? It looks
the same way as the private key file, but it is shorter.
As I said in the other message thats an RSAPublicKey structure,
Ok. Thanks for the answers.
I'll try with this information.
Regards,
Tomasz Kaźmierczak
Dr. Stephen Henson pisze:
On Fri, Feb 06, 2009, Tomasz Kaźmierczak wrote:
Ok. And it is of course base64 encoded, right?
And what about the public key (-BEGIN RSA PUBLIC KEY-)? It looks
the
Hello,
In the OpenSSL API there are functions called PEM_write_RSAPrivateKey(),
PEM_write_RSAPublicKey() and corresponding read functions:
PEM_read_RSAPrivateKey(), PEM_read_RSAPublicKey(). What I need is to
read/write RSA keys to/from a file in exactly the same format as these
functions do,
On Thu, Feb 05, 2009, Tomasz Ka??mierczak wrote:
Hello,
In the OpenSSL API there are functions called PEM_write_RSAPrivateKey(),
PEM_write_RSAPublicKey() and corresponding read functions:
PEM_read_RSAPrivateKey(), PEM_read_RSAPublicKey(). What I need is to
read/write RSA keys to/from a
http://www.rsa.com/rsalabs/node.asp?id=2124 has links to the PKCS
formats (Public-Key Cryptography Standards).
http://www.rfc-editor.org/rfc/rfc4648.txt has the documentation on the
base64 encoding that the PEM_ functions work with.
(This is in addition to the links that Dr. Henson has
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