"OpenSSL" Signing Maria's CSR

This section provides a tutorial example on how to use 'OpenSSL' to sign a CSR (Certificate Signing Request) generated by 'keytool' with CA's private key.

When I got Maria's CSR (Certificate Signing Request), maria.csr, I can sign it with my CA private key with the "openssl x509 -req" command as shown in the command session below:

>openssl x509 -req -in maria.csr -CA herong.crt 
   -CAkey herong.key -out maria.crt -days 365 
   -CAcreateserial -CAserial herong.seq

Loading 'screen' into random state - done
Signature ok
subject=/C=AT/ST=Maria State/L=Maria City/O=Maria Company
/OU=Maria Unit/CN=Maria Teresa
Getting CA Private Key
Enter pass phrase for herong.key: keypass

>type maria.crt
-----BEGIN CERTIFICATE-----
MIIEGTCCAwECAQIwDQYJKoZIhvcNAQEEBQAwgZMxCzAJBgNVBAYTAkhZ...
...
k7R7Q4bN2eDWX9eiUid6VuJefLx3S1HlyVLwBlR1t4zqUZUeZxVEhqf6...
-----END CERTIFICATE-----

Cool. CSR generated by "keytool" is compatible with "OpenSSL". Here are some notes on what I did:

Do you want to see some detail information about Maria's public key certificate? Try this command "openssl x509":

>openssl x509 -in maria.crt -noout -text

Certificate:
    Data:
        Version: 1 (0x0)
        Serial Number: 1 (0x1)
        Signature Algorithm: md5WithRSAEncryption
        Issuer: C=HY, ST=HY State, L=HY City, O=HY Company, 
OU=HY Unit, CN=Herong Yang/emailAddress=herongyang.com
        Validity
            Not Before: Apr 1:57:05 2007 GMT
            Not After : Mar 31 17:57:05 2008 GMT
        Subject: C=AT, ST=Maria State, L=Maria City, 
O=Maria Company, OU=Maria Unit, CN=Maria Teresa
        Subject Public Key Info:
            Public Key Algorithm: dsaEncryption
            DSA Public Key:
                pub:
                    0a:aa:91:a7:4e:36:39:4b:95:5e:fb:99:...
                    ... 
                    79:30:3a:fe:40:38:71:71
                P:
                    00:fd:7f:53:81:1d:75:12:29:52:df:4a:...
                    ... 
                    f2:22:03:19:9d:d1:48:01:c7
                Q:
                    00:97:60:50:8f:15:23:0b:cc:b2:92:b9:...
                    84:0b:f0:58:1c:f5
                G:
                    00:f7:e1:a0:85:d6:9b:3d:de:cb:bc:ab:...
                    ... 
                    25:64:01:4c:3b:fe:cf:49:2a
    Signature Algorithm: md5WithRSAEncryption
        00:9e:25:92:ce:33:b1:00:fc:a1:ef:b8:70:d9:97:aa:...
        ...
        fa:c0:68:6c                

The detailed information of the certificate seems to be good. The issuer is me, Herong Yang. The subject is Maria Teresa. The expiration is one year later.

What needs to happen next are:

Last update: 2013.

Table of Contents

 About This Book

 Cryptography Terminology

 Cryptography Basic Concepts

 Introduction to AES (Advanced Encryption Standard)

 Introduction to DES Algorithm

 DES Algorithm - Illustrated with Java Programs

 DES Algorithm Java Implementation

 DES Algorithm - Java Implementation in JDK JCE

 DES Encryption Operation Modes

 DES in Stream Cipher Modes

 PHP Implementation of DES - mcrypt

 Blowfish - 8-Byte Block Cipher

 Secret Key Generation and Management

 Cipher - Secret Key Encryption and Decryption

 Introduction of RSA Algorithm

 RSA Implementation using java.math.BigInteger Class

 Introduction of DSA (Digital Signature Algorithm)

 Java Default Implementation of DSA

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Cipher - Public Key Encryption and Decryption

 MD5 Mesasge Digest Algorithm

 SHA1 Mesasge Digest Algorithm

 OpenSSL Introduction and Installation

 OpenSSL Generating and Managing RSA Keys

 OpenSSL Managing Certificates

 OpenSSL Generating and Signing CSR

 OpenSSL Validating Certificate Path

 "keytool" and "keystore" from JDK

"OpenSSL" Signing CSR Generated by "keytool"

 "OpenSSL" Acting as a CA (Certificate Authority)

 "OpenSSL" Generating CA's Private Key

 "OpenSSL" Self-Signing CA's Public Key

 "keytool" Generating Maria's Private Key

 "keytool" Generating Maria's CSR

"OpenSSL" Signing Maria's CSR

 "OpenSSL" Managing Serial Numbers when Signing CSR

 "keytool" Importing CA's Own Certificate

 ""keytool" Importing Maria's Certificate Signed by CA

 Migrating Keys from "keystore" to "OpenSSL" Key Files

 Certificate X.509 Standard and DER/PEM Formats

 Migrating Keys from "OpenSSL" Key Files to "keystore"

 Using Certificates in IE (Internet Explorer)

 Using Certificates in Firefox

 Using Certificates in Google Chrome

 Outdated Tutorials

 References

 PDF Printing Version