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Attendees at the open supply database's annual developers' convention in Santa Clara this morning are waking as much as the striking information that their own product, whose cost to sun Microsystems turned into to have been lauded by means of none apart from solar co-founder Andreas von Bechtolsheim in a keynote address scheduled for Thursday, is now owned by means of Oracle techniques.
The preliminary value of MySQL to Oracle -- up except this morning, its largest competitor -- become glaring via its absence from this morning's joint press convention that includes sun and Oracle executives. sun CEO Jonathan Schwartz outlined MySQL together with OpenOffice as part of what he now calls the realm's biggest employer for open source utility. unless Oracle's SEC filings are made public, we may not be aware of whether MySQL even factored into its valuation of solar.
LinuxQuestions.org editor Jeremy had, well, Linux questions this morning after the information was announced: "With plenty of sun's salary coming from hardware, will [Oracle] spin that division off or use it to center of attention more on an entire Oracle stack, that contains every little thing from hardware to database?" Jeremy wrote. "moving to the individual components of that stack, will Oracle proceed with the SPARC CPU line or be interested in the extra commodity x86 strains? at the OS stage, will Oracle proceed to focus on Linux and their Unbreakable implementation or will they try to retain Solaris alive? Oracle has been contributing to Linux in a big way these days, and it could be a major loss for that to move away."
unbiased analyst and Betanews contributor Carmi Levy believes the deal could permit some intriguing alternatives for Oracle, which during the past has had greater problem breaking into the decrease end of the database market. There, MySQL rules amongst open source users, and Microsoft SQL Server has had a stronghold among the many industrial set.
"This thinking extends into the lessen conclusion of the market as well, given how the sun acquisition gives Oracle access to MySQL," Levy told Betanews. "whereas nobody could ever rightfully declare that MySQL threatens Oracle's higher-conclusion database offerings, its addition to the portfolio offers Oracle additional leverage in a market with huge boom competencies. The MySQL put in base of about eleven million gives Oracle revenue teams fertile chance to have conversations they have not prior to now had."
but MySQL's support base is comprised in large half by way of unbiased developers, and that's the reason through design. Already, these independent builders are waking up to a brand new world, including utility engineer Ryan Thiessen. An eleven-year MySQL veteran, Thiessen is scheduled to speak at the MySQL convention this week; and in a blog post this morning entitled simply, "stunned," he displays his bewilderment:
"last time this yr i used to be cautiously confident about solar's purchase of MySQL. but no longer this 12 months -- it be worry and disappointment over what this skill for MySQL," Thiessen wrote. "when I examine this as a rumor a number of weeks ago i thought it was a shaggy dog story of an idea. Why would a excessive margin software enterprise are looking to purchase a declining hardware enterprise, even if that hardware is super? As for their utility, I cannot think about that Oracle is attracted to Java, MySQL, etc as salary generating products, it might just be a tiny blip for them."fairly, Java and Solaris were mentioned with the aid of Oracle CEO Larry Ellison as the key motivating factors, now not the SPARC enterprise -- actually, it become SPARC that didn't generate a blip. MySQL bought at least that lots -- this for a company that become price at least 1000000000 to solar simply 15 months ago.
MySQL's founders have remained on the record as fiercely against the use of application patents, as harmful to the spirit and ethics of open source. Oracle is not diametrically adverse to that line of thinking, having made statements in precept right through this decade opposing the advent of patent portfolios for predatory applications.
Oracle's 2000 remark on the subject, which is essentially unchanged, reads, "Patent legislations offers to inventors an unique right to new technology in return for publication of the expertise. this is now not appropriate for industries such as application development by which improvements occur impulsively, can also be made without a substantial capital funding, and have a tendency to be inventive combos of previously-known ideas."
however Oracle does support the use of patents for defensive applications, particularly when a company is attacked through a corporation with a big portfolio.That reality by myself does not imply Oracle can't, or hasn't, used its application belongings very aggressively. In October 2005, the business obtained its first established open source database component: Innobase, whose InnoDB contained business-class features that have been in reality rolled into MySQL 5.0. with the aid of buying InnoDB, Oracle ended up possessing part of MySQL anyway, in a circulation that InfoWorld's Neil McAlister astutely reasoned may well be to retain the decrease-category database snugly within the reduce class, whereas siphoning purchasers into Oracle's upper classification.
"it truly is why when Oracle snapped up Innobase in early October it became convenient to interpret the move as an incredible offensive on Oracle's part," McAlister wrote then. "via taking handle of 1 of MySQL's vital inside organs, Oracle positive factors the energy to crush the upstart at a whim, without problems via closing its grip round Innobase. but, seriously, why would Oracle do that?"
four years later, we've a more in-depth glimpse of an answer to McAlister's question: by using taking handle of the geography of enterprise databases over a bigger area, Oracle keeps MySQL safely within its own continent, both locked away or funneling new purchasers across the channel. probably no person might ever rightly claim that MySQL was a real threat, however nowadays, Oracle's move ensures that it in no way may also be. and that is the reason the brand new world that builders in Santa Clara are waking up to.
At OSCON in 2006, I adopted sessions that mentioned how open source agencies would fare when big corporations are available. back then there were best a handful of examples of big organizations buying small open supply agencies. Three years later, we’ve witnessed MySQL AB get swallowed through sun, most effective to have sun be swallowed through Oracle. Now there are greater open questions than ever and at the least three types of MySQL which are jockeying to proceed the MySQL blood-line. the previous day I attended talks by two of those agencies and that i have to ask yourself how the MySQL game will play itself out over time.
the primary speak I attended was: “Drizzle: repute, concepts, and Ecosystem” where a number of Drizzle developers shared their innovations about this challenge. Brian Aker forked MySQL to create Drizzle a year ago with the premise to create a brand new database that become leaner and extra extensible through the use of a micro kernel and plugin mannequin. The present MySQL codebase had grown overly complex after a few elements were “hacked in” which made adding extra points overly difficult.
The drizzle crew, which has a few builders subsidized by sun, appears very a good deal concerned concerning the technical nature of their challenge. As in most open source tasks the builders appear much less concerned with politics and corporations and more with making a kick-ass database. i tried to ask just a few inquiries to see the place they think that MySQL, Drizzle and MariaDB had been headed, but largely the questions have been no longer answered — they reiterated the center of attention on technical excellence. aside from having critical company aid, Drizzle seems to be pushed via basic open supply ideas. This makes me chuffed, since the way forward for both MySQL and Drizzle are uncertain on account that Oracle simply purchased sun. Given the center of attention on open source concepts, I’m definite the Drizzle would no longer go away may still Oracle come to a decision to stop supporting the group.
The 2nd session became: “MariaDB: neighborhood pushed SQL Server” which introduced Monty’s (of MySQL AB repute) new business Monty software AB. in contrast to the Drizzle group, Monty’s new business has clear corporate dreams, comprehensive with fluff and marketing communicate. the brand new company’s fork of MySQL, MariaDB, goals to be 100% compatible with the fashioned MySQL. Its designed to be a hundred% drop in replacement that goes even so far as letting individuals who're licensed on MySQL observe their skills to MariaDB. even though Monty software AB differs in a couple of features from the common MySQL AB, it in fact looks to follow a fairly an identical mannequin.
The individuals engaged on the original MySQL have been not too smartly represented right here at OSCON. not like Drizzle and MariaDB, MySQL is shrouded in uncertainty considering the fact that nobody be aware of what Oracle plans to do with MySQL. given that it MySQL can cannibalize (and possibly already has) Oracle’s flagship product, the future of MySQL is awfully doubtful. The mindshare at OSCON certainly belongs to MariaDB and to Drizzle.
Returning returned to my customary factor now, we are able to see that the acquisition of MySQL AB by way of sun hasn’t worked out in any respect how all and sundry had hoped. lots of the fears raised by way of my weblog submit from 3 years in the past have manifested during this mess. After MySQL became a sun property, the first-class of MySQL all started to endure, including releasing a edition of MySQL that had severe widely used bugs. This had not ever took place earlier than and sent a transparent sign that no longer all turned into well with MySQL. And the community had loads of frustrations with solar as sun slowed or stopped accepting patches. Even important corporations like Google had critical patches to MySQL omitted. certainly the manner had broken down.
today we find ourselves with at the least three types of MySQL that each one have differing goals, yet promise to share code with one another. Some might be compatible with every other, some damage new floor. The one aspect we understand for definite that nothing in this video game is certain. except Oracle makes a press release about the way forward for MySQL nothing will be clear.
I discover it in reality exciting that both Drizzle and MariaDB have lower back MySQL to fundamental open supply roots. Neither community is going to require fancy licenses or copyright agreements and will entirely count on the usage of the GPL. Drizzle is devoid of a commercial mannequin in the meanwhile and even Monty program AB will appear to be a extra “basic” open supply company.
Amidst this uncertainty the only element that is obvious to me is that the MariaDB and the Drizzle communities don't seem to be looking forward to anything else — they're engaged on new enhancing their initiatives as quick as they could. I individually suppose that Drizzle presents the most unique method to saving MySQL — it sounds like the codebase needed a significant overhaul with the intention to ruin some building bottlenecks and to allow greater individuals to return and take part in the building system.
however I’ve switched to Postgres many moons in the past, I’m completely excited about what is at present happening with MySQL. The existing activities during this house are things that we mentioned three years in the past with the conclusion of “This can be exciting to monitor!” certainly, it’s interesting to watch — I feel we’ll be talking about this situation for fairly a while to return. Oh, and MySQL clients: be troubled no longer — you’re going to be the winners in this complete debacle!
Duke at Baylor: Blue Devils 26-21. top chance for the Bears. Duke is playing without quarterback Daniel Jones.
Rutgers at Kansas: Scarlet Knights 24-20. big 12 upset special. KU is someway favored. That’s appropriate. Kansas is preferred.
Texas-San Antonio at Kansas State: Wildcats 27-17. Oh my goodness, okay-State isn’t very decent. What on earth has came about to the ‘Cats?
LSU at Auburn: warfare Eagle 26-7. Of Auburn’s 5 toughest video games – also including Washington, Mississippi State, Georgia and Alabama – handiest this one is at domestic.
Alabama at Ole omit: Crimson Tide 35-eleven. There became a time when this changed into the South’s best rivalry. no longer the Iron Bowl. no longer Bama-Tennessee. now not Georgia-Florida. This.
Vanderbilt at Notre Dame: combating Irish 27-sixteen. Is Vandy competitive? We’ll discover.
Missouri at Purdue: Tigers 35-26. The Boilermakers have been notion to be ascending. Then they misplaced at domestic to Northwestern, forgivable however avoidable, after which lost at domestic to eastern Michigan. Unforgivable. Now Purdue is a significant underdog at domestic to Mizzou, with Boston college coming to West Lafayette subsequent week. may the Boilermakers go 0-4 to birth the year with 4 home losses?
Colorado State at Florida: Gators 34-14. Florida hired away Colorado State train Jim McElwain after the 2014, nevertheless it came at a value. Florida agreed to pay CSU $500,000 for six years, via 2020. McElwain agreed to pay $333,333 a yr for a similar six years. Plus Florida agreed to host Colorado State in a ballgame, this one, for a $2 million assure. The Rams have stumbled upon one of the most great cash-making schemes in historical past. hire an up-and-coming train, supply him whatever he wants however encompass a huge buyout in his contract. by way of the conclusion of 2020, the Rams will were paid $7 million by way of Florida to play one online game and never have McElwain coach them. And right here’s the humorous element. McElwain’s now not even the Florida train anymore; he become fired ultimate November with a 22-12 universal list. ESPN reported that McElwain had been an “strange fit” from the birth. right here’s the funnier component. It’s not for definite that Florida will also win this video game. The Gators lost at home to Kentucky remaining week, ending a 31-game series profitable streak, and Colorado State beat Arkansas.
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The first thing to do is decide which platform you're going to focus on. Each "flavor" has its own proprietary tools and commands. While all share a basic SQL language foundation, DBCC CHECKDB() doesn't run on MySQL and DESCRIBE doesn't get you anything SQL Server. Likewise, SQL Server Management Objects (SMO) don't help you with Oracle and if you're looking for "TNS" in SQL server, you're out of luck. Some of these are proprietary extensions to the SQL language, others are differences in architecture and/or tools. What platform to start with should be based on your opportunities, your knowledge of the various platforms, or both. Try and focus only on one because each platform has a lot to know in order to become truly proficient. Expert or "guru" status in a particular database product takes even more time and effort.
For instance, one of the reasons I started learning SQL Server so heavily as opposed to Oracle or DB2 was I had a stronger foundation in SQL Server due to being in "Microsoft shops" where SQL Server was used. SQL Server was the platform of choice partially because of the focus on Microsoft technologies but also because SQL Server came in the MSDN subscriptions and could be used at no additional charge in the development environment. Another reason is that most of the opportunities I was finding in my area centered around SQL Server. Therefore, SQL Server was my first choice and I put my energy into learning it better.
After you've decided which platform to pursue, you should get it installed and actively work with it. When I was learning SQL server I had SQL Server 6.5 installed on a server and SQL Server 7.0 installed on my workstation. When SQL Server 2000 came along, I installed it, and the same was true with SQL Server 2005. I ensured that my installs included the components I was interested in working with. Where can you find the products? In most cases the vendors have provided downloads of either evaluation or full-blown versions for people to learn on. Here are the links as of this blog post for some of the most popular platforms:In some cases you may want to run virtual machines on server software such as Windows server 2003 but your workstation is running Windows XP or Vista. I realize that the statement I made is Windows-only but that's because I won't pretend to be knowledgeable on virtualization on the Linux side (and I won't even try and touch Mac). However, virtualization solutions such as Xen do exist. Back to the Microsoft side of the house, not only is there Xen, but there are more traditional names of VMware and Microsoft.Don't just stop at installing the software (and don't just install it once, either). Learn the features centered around what you're most interested in. Work with the SQL and proprietary commands. Learn the tools. Get to where they are second nature to you. After all, the better you know the technology, the more efficient you become with it. The more efficient you are and the more knowledge you have with your chosen platform, the better an asset you are for the organization that picks you up. While knowing the technology cold may not guarantee a successful technical interview (that requires work on those soft skills), not knowing the technology well pretty much ensures a poor technical interview.
If you're thinking, "What tools are available to help me become more proficient?" there are quite a few. However, this post is getting long in the tooth; therefore, I'll focus on those resources, including discussing training and certification, next week.
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Article Rating:April 12, 2013 09:45 AM EDT
Reads:8,976 This book is THE book for the database beginner. It thoroughly covers design principles and process, and it covers them in depth.
The book is broken into four parts, Part I: Relational Database Design, Part II: The Design Process, Part III: Other Database Design Issues, and Part IV: Appendixes.
Part I starts with a chapter that gives the history of databases and the path we took to get where we are. It continues with a chapter that covers the reason to have a good design methodology and what the goal of the methodology should be.
Chapter three is really cool for those just getting into database design. It introduces some of the most common terminology used in the database design process. It is not just a glossary (which this book also has after the appendixes), it goes much further than just a definition and includes diagrams to help with the explanations.
Part II covers the database design process. Topics the author covers include table structures, field specifications, assigning primary keys, table relationships, views, and levels of data integrity.
Part III covers bad design and when bending the rules of proper design are ok.
The appendices (Part IV) include a summary of design guidelines, example form templates, diagram symbols, a check list of design guidelines, and an activity diagram (flowchart) of the database design process.
I have listed each part and the chapters they contain below.
Part I. Relational Database Design1. The Relational Database2. Design Objectives3. Terminology
Part II. The Design Process4. Conceptual Overview5. Starting the Process6. Analyzing the Current Database7. Establishing Table Structures8. Keys9. Field Specifications10. Table Relationships11. Business Rules12. Views13. Reviewing Data Integrity
Part III. Other Database Design Issues14. Bad Design—What Not to Do15. Bending or Breaking the Rules
Part IV. AppendixesA. Answers to Review QuestionsB. Diagram of the Database Design ProcessC. Design GuidelinesD. Documentation FormsE. Database Design Diagram SymbolsF. Sample DesignsG. On NormalizationH. Recommended Reading
One thing this book does not include is coverage of the structured query language bracket (SQL). This book is purely about designing the database not about what to do with the data once it is in the database. That's not a downfall of the book, it actually makes it better. The author is able to focus on design principles and drill much further into them by excluding teaching SQL.
Overall I found the author's writing made reading the book a pleasant experience. I cannot say that for all database books I have read. Another reason it is good is that the author goes into extreme detail on each topic he covers.
The author also has made the forms he uses in the book available in Word and PDF format for download on the publisher's web site
All in all I highly recommend this book to database beginners. It will teach you how to do things the right way from the get-go.
I also recommend it for the non-DBA developer who is tasked with creating databases on their projects because the project can't afford a real DBA. There are a lot of those out there and I have seen them be the cause of many painful projects that have to manipulate good code into bad code to compensate for poor database design.Database Design for Mere Mortals: A Hands-On Guide to Relational Database Design (3rd Edition)
Tad Anderson has been doing Software Architecture for 18 years and Enterprise Architecture for the past few.
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As part of the J2SE bundle, the Java 2 platform provides a set of tools that helps Java developers and security administrators to administer security policies, create keys (for testing purposes only), manage keys and certificates, sign JAR files, verify signatures, and support other functions related to key management.
The following tools and utilities are provided as part of the J2SE bundle.Java Keystore
The keystore is a protected database that stores keys and trusted certificate entries for those keys. A keystore stores all the certificate information related to verifying and proving an identity of a person or an application. It contains a private key and a chain of certificates that allows establishing authentication with corresponding public keys. Each entry in the keystore is identified by a unique alias. All stored key entries can also be protected using a password. The Java keystore follows the RSA cryptographic standard known as PKCS#12, which provides a way to securely store multiple keys and certificates in a password-protected file. Unless specified by default, the key entries are stored in a .keystore file and the trusted CA certificate entries are stored in a cacerts file, which resides in the JRE security directory.Keytool
Keytool is a key and certificate management tool that allows users and administrators to administer their own private/public key pairs and associated certificates. This tool is intended for use with authentication services and verifying data integrity using digital signatures. The keytool is provided with the J2SE bundle as a command-line utility, which can be used to create JKS (Java keystore) and JCEKS (Java Cryptographic Extensions Keystore) keystores, generate and store keys and their associated X.509v1 certificates, generate Certificate Signing Requests (CSR), import and store trusted certificates, and perform maintenance on keystore entries.
The keytool utility uses the X.509 certificate standard, which is encoded using the Abstract Syntax Notation 1 (ASN.1) standard to describe data and the Definite Encoding Rules (DER) standard to identify how the information is to be stored and transmitted. The X.509 certificate takes the values of subject and issuer fields from the X.500 Distinguished Name (DN) standard.
Let's take a look at the most common operations performed using the keytool utility:
Creating a keystore database. A keystore is created whenever you use keytool with options to add entries to a non-existent keystore. The following options automatically create a keystore when the specified keystore does not exist in the user's directory:
By default, the keytool creates a keystore as a file named .keystore in the user's home directory, but a name can be specified using the –keystore option.
Generating private/public key pairs. When a keytool is used to generate a private/public key pair, each entry contains a private key and an associated certificate "chain." The first certificate in the chain contains the public key corresponding to the private key.
A pair of public and private keys can be generated and added to the keystore using the keytool -genkey command. The -genkey option creates a public/private key pair and then wraps the public key in a self-signed certificate. The following example will generate a key pair wrapped in a X.509 self-signed certificate and stored in a single-element certificate chain. In this command, we also need to specify passwords for the keys and the keystore, the algorithm to use (RSA), and the alias (see Example 3-20).Example 3-20. Generating key pairs using keytool keytool -genkey -alias myalias -keyalg RSA -keypass mykeypass -keystore mykeystore -storepass mystorepass
In the command shown in Example 3-20, the -genkey option is used to generate the key pair, and all other options are used in support of this command. The key pair is identified with an alias myalias with a password of mykeypass. Both the alias and the keypass are required for all the subsequent commands and operations when we access the particular key pair in the keystore. The other options that can be used are as follows:
When you execute these command and options, you will also be prompted with questions to supply the following names for creating subcomponents of the X.500 Distinguished Name standard:CN - First and Last name OU - Organizational unit O - Organization L - City or Locality ST - State or Province C - Country code
Example 3-21 is a sample output generated using these command and options.Example 3-21. Generating keypairs using Keytool $ keytool -genkey -alias myalias -keyalg RSA -keystore mykeystore -keypass mykeypass -storepass mystorepass What is your first and last name? [Unknown]: Roger R What is the name of your organizational unit? [Unknown]: Java developer What is the name of your organization? [Unknown]: Java Day care What is the name of your City or Locality? [Unknown]: Boston What is the name of your State or Province? [Unknown]: Massachusetts What is the two-letter country code for this unit? [Unknown]: US Is CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=Massachusetts, C=US correct? [no]: yes
With all the questions answered, the keytool generates the keys and the certificate and stores them in the specified keystore file.
Listing the entries of a keystore. The keytool with the -list option is used to list all the entries of a keystore, and also to look at the contents of an entry associated with an alias. Example 3-22 is a command that lists all the entries of a keystore named mykeystore. This command also requires us to enter the keystore password.Example 3-22. Using keytool to list entries of a Java keystore $ keytool -list -keystore mykeystore Enter keystore password: mystorepass Keystore type: jks Keystore provider: SUN Your keystore contains 1 entry myalias, Sep 5, 2003, keyEntry, Certificate fingerprint (MD5): 68:A2:CA:0C:D5:C6:D2:96:D5:DC:EA:8D:E3:A1:AB:9B
To display the contents of a keystore entry when identified with an alias, the list command prints the MD5 fingerprint of a certificate. If the -v option is specified, the certificate is printed in a human-readable format. If the -rfc option is specified, the certificate is output in the Base 64 encoding format. The following command (see Example 3-23) lists the contents of a keystore entry in a human-readable format for alias "myalias."Example 3-23. Using keytool to list contents of a Java keystore $ keytool -list -alias myalias -keystore mykeystore -v Enter keystore password: mystorepass Alias name: myalias Creation date: Sep 5, 2003 Entry type: keyEntry Certificate chain length: 1 Certificate: Owner: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Issuer: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Serial number: 3f58edda Valid from: Fri Sep 05 16:11:06 EDT 2003 until: Thu Dec 04 15:11:06 EST 2003 Certificate fingerprints: MD5: 68:A2:CA:0C:D5:C6:D2:96:D5:DC:EA:8D:E3:A1:AB:9B SHA1: 2E:E1:36:ED:D0:E8:EF:85:E5:6B:92:AD:9D:AE:28:82:25:8C:CC:9F
Exporting a certificate entry from a keystore. To have trusted interactions, the communicating client peer needs to have a copy of the public keys from the original signer in the keystore. This is done by exporting the certificate (containing the public key and signer information) to a binary certificate file and then importing them as a trusted certificate into the client peer's keystore.
To export the certificate to a binary certificate file (see Example 3-24), the keytool -export and -file options are used. The following command exports a certificate entry identified with alias myalias in keystore mykeystore to a file mycertificate.cer. This command requires entering the keystore password.Example 3-24. Exporting a certificate from a Java keystore $ keytool -export -alias myalias -file mycertificate.cer -keystore mykeystore Enter keystore password: mystorepass Certificate stored in file <mycertificate.cer>
Importing a trusted certificate. The keytool -import option is used to import a trusted certificate into a keystore database and to associate it with a unique alias. This is executed in the environment of a client who wishes to trust this certificate and to have trusted client interactions with that communicating peer.
When a new certificate is imported into the keystore, the keytool utility verifies that the certificate has integrity and authenticity. The keytool utility attempts this verification by building a chain of trust from that certificate to the self-signed certificate that belongs to the issuer. The lists of trusted certificates are stored in the cacerts file.
To execute the import in a keystore (see Example 3-25), you need to provide the certificate entry with a unique alias and key password. For example, the following command imports a certificate entry from a file mycertificate.cer and identifies the entry with myclientalias and key password clientkeypass in keystore clientkeystore with keystore password clientpass. As a last step, the command displays the owner and issuer information of the certificate and prompts the user to trust the certificate:Example 3-25. Importing a trusted certificate to a Java keystore $ keytool -import -alias myclientalias -file mycertificate.cer -keypass clientkeypass -keystore clientstore -storepass clientpass Owner: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Issuer: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Serial number: 3f58edda Valid from: Fri Sep 05 16:11:06 EDT 2003 until: Thu Dec 04 15:11:06 EST 2003 Certificate fingerprints: MD5: 68:A2:CA:0C:D5:C6:D2:96:D5:DC:EA:8D:E3:A1:AB:9B SHA1: 2E:E1:36:ED:D0:E8:EF:85:E5:6B:92:AD:9D:AE:28:82:25:8C:CC:9F Trust this certificate? [no]: yes Certificate was added to keystore
Printing certificate information. The keytool –printcert option is used to display the contents of a certificate that has been exported from a keystore and made available as a file. To execute this command, no associated keystore database or password is required, because the certificate contains the information as a certificate file (.cer), which is not imported into the keystore.
You would use Example 3-26 to display the contents of a binary certificate file.Example 3-26. Displaying contents of a certificate $ keytool -printcert -file mycertificate.cer Owner: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Issuer: CN=Roger R, OU=Java developer, O=Java Day care, L=Boston, ST=MA, C=US Serial number: 3f58edda Valid from: Fri Sep 05 16:11:06 EDT 2003 until: Thu Dec 04 15:11:06 EST 2003 Certificate fingerprints: MD5: 68:A2:CA:0C:D5:C6:D2:96:D5:DC:EA:8D:E3:A1:AB:9B SHA1: 2E:E1:36:ED:D0:E8:EF:85:E5:6B:92:AD:9D:AE:28:82:25:8C:CC:9F
Creating a Certificate Signing Request (CSR). The Keytool -certreq option allows you to generate a certificate authentication request for a certificate from a Certificate Authority (CA). The -certreq option (see Example 3-27) creates a CSR for the certificate and places the CSR in a file named certreq_file.csr, where certreq_file.csr is the name of the file that is to be sent to the CA for authentication. If a CA considers the certificate to be valid, it issues a certificate reply and places the reply in a file named cert_reply.cer, where cert_reply.cer is the file returned by the CA that holds the results of the CSR authorizations that were submitted in the certreq_file.csr file.Example 3-27. Creating a CSR keytool -certReq -keystore mykeystore -file myCSR.csr -alias mycsralias
Deleting a keystore. To delete a keystore, use an operating system delete command to delete the keystore files.
Changing password in the keystore. To change the keystore password, use keytool -storepassword -new options to set a new password (see Example 3-28).Example 3-28. Changing keystore password keytool -storepasswd -new newstorepass -keystore mykeystore -storepass mystorepass
Example 3-28 shows how the password for the keystore mykeystore is changed from mystorepass to newstorepass.Smart Cards and Cryptographic Devices Based Keystores
With the release of J2SE 5.0 [J2SE5], Java provides support for using smart cards and cryptographic devices as keystores. J2SE 5.0 introduced the support for RSA Cryptographic Token Interface Standard (referred to as PKCS#11) which defines native programming interfaces to cryptographic tokens, such as hardware cryptographic accelerators and smart cards. Integrating smart card based keystores is accomplished by configuring the smart card PKCS#11 module as a security provider. To facilitate the integration using PKCS#11 interfaces, J2SE 5.0 provides a new cryptographic provider (SunPKCS11). The SunPKCS11 provider enables existing applications written to the JCA and JCE APIs to access native PKCS#11-based smart cards and cryptographic devices. To enable this, the JRE must be configured with the PKCS#11 provider in the java.security file located at $JAVA_HOME/jre/lib/security/java.security.
For a detailed example about how to configure the smart card as Java keystore, refer to the section "Using Smart Cards as Keystores" in Chapter 4, "Java Extensible Security Architecture and APIs."Policytool
The policytool is a utility that provides a menu-driven user-friendly interface for creating and viewing Java security policy configuration files. The policytool menu options enable you to read and edit policy files by adding policy and permission entries, assigning a keystore, and creating a new policy configuration file.
To start the Policy Tool utility, simply type the following at the command line:policytool
For more information about using policytool menu options, refer to the policytool documentation provided with the J2SE bundle.Jarsigner
The jarsigner tool is used to digitally sign the Java archives (JAR files) and to verify the signature and its integrity. The jarsigner can sign and verify only the JAR file created by the JAR utility provided with the J2SE bundle.Signing a JAR file
The jarsigner uses the private key information from the signer's keystore to generate digital signatures for signing the JAR files. After signing, the signed JAR file includes a copy of the public key from the keystore that corresponds to the private key used to sign the file. The jarsigner can also verify the signer's information in the signed JAR file.
Example 3-29 shows what you would use to sign a JAR file named myJar.jar and then name the signed JAR file as mySignedJar.jar.Example 3-29. Using jarsigner to sign a jar file jarsigner -keystore /home/nr/mykeystore -storepass mykeystorepass -keypass mykeypass -signedjar mySignedJar.jar myJar.jar myPrivateKeyalias Verifying a Signed JAR
To verify a signed JAR file, and to verify that the signature is valid and the JAR file has not been tampered with, you would use the command shown in Example 3-30.Example 3-30. Using jarsigner to verify signature a signed jar jarsigner –keystore /home/nr/mykeystore -verify –certs mySignedJar.jar
The J2SE environment also provides support for cryptographic services, secure communication services using SSL and TLS protocols, and certificate management services. The J2SE 5.0 is the newest release of the Java platform. It includes numerous feature and security updates to the Java language and the JVM. J2SE 5.0 also offers significant security enhancements compared to the previous release of J2SE 1.4.x. These will be discussed in Chapter 4, "Java Extensible Security Architecture and APIs."
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