For Your Eyes Only! MQ Advanced Message Security
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1 For Your Eyes Only! MQ Advanced Message Security Jon Rumsey IBM Wednesday 10 th August Session # 9417
2 Agenda Message Level Security Digital Cryptography 101 (Alice & Bob) WebSphere MQ Advanced Message Security Architecture Administration Availability
3 Why Message Level Security? Messaging that does not involve humans Command & control scenarios lication to lication, no human checking Large MQ networks : difficult to prove security of messages Against message injection / message modification / message viewing Data subject to standards compliance (PCI, HIPAA, etc) Credit card data protected by PCI Confidential government data Personal information e.g. healthcare Data at rest, administrative privileges, etc
4 Message Level Protection Assurance that messages have not been altered in transit When issuing payment information messages, ensure the payment amount does not change before reaching the receiver Assurance that messages originated from the expected source When processing control messages, validate the sender Assurance that messages can only be viewed by intended recipient(s) When sending confidential information
5 Cryptography Symmetric Keys Relatively fast Poses key distribution challenges when faced with large numbers of senders/receivers The key has to be known by the sender and receiver Asymmetric Keys Message encrypted with one key can only be decrypted by the other one Slower than symmetric key cryptography Asymmetric Keys can be used to solve the key distribution challenges associated with symmetric keys
6 Symmetric Key Crytography Encryption Decryption plaintext ciphertext plaintext
7 Asymmetric Key Cryptography Bob's Public Key Bob's Private Key Encryption fdsfdfq Decryption Bob plaintext ciphertext plaintext
8 Hash Functions Message of length n Hash Function h Fixed length, short number Hash Function Computes the message MAC (Message Authentication Code) Easy to compute Very difficult to reverse Computationally infeasible to find two messages that hash to the same value
9 Digital Signatures Alice Alice's plaintext Hash Function h Alice "signs" the hash (encrypts the hash with her private key) h h h Bob Hash Function Bob decrypts the signed hash with Alice's public key h If hashes match: ƒ Only Alice could have signed ƒ Plaintext didn't change in transit Bob hashes the plaintext to derive the hash
10 WebSphere MQ Advanced Message Security Sending Receiving MQ Msg MQ Msg
11 WebSphere MQ Advanced Message Security Provides additional security services over and above base MQ lication to lication protection for messages Well suited to point to point, publish/subscribe limited Have to know your authorized parties ahead of operation Asymmetric cryptography used to protect each message Non-invasive No changes required to applications Administrative interfaces for policy management Command line MQ Explorer Plug-In (GUI)
12 WMQ vs WMQ AMS Security AMS is a complimentary offering, not a replacement to WMQ security WebSphere MQ Authentication (Local OS user id, SSL peer for clients) Authorization (OAM on distributed, RACF on z/os) Integrity (SSL for channels) Privacy (SSL for channels) WebSphere MQ Advanced Message Security Integrity (Digital signing of messages) Privacy (Message content encryption)
13 Certificates, Interceptors and Policies AMS uses X.509 digital certificates for digital signing and encryption Interceptors installed in the application process to sign, encrypt and decrypt message data No code changes to the application Policies are defined to control the interceptors Matched against queue names What level of protection, none, integrity or privacy Which certificates are involved (DN) Authorised signer(s) Authorised recipient(s)
14 WMQ + AMS v7.0.1 Architecture MQ Svr API Intercept MQ Java/JMS Java Intercept MQ Client Client Intercept Key Store MCA OK? Object Authority Manager Queue Manager y/n
15 AMS Interceptors Server API Exit Client Library Replacement JMS JMQI Intercept lication lication JMS lication Replacement mqic lib JMS MQ API (mqm lib) API Exit Renamed MQIC JMQI Intercept JMQI Channel Agent Channel Agent QMGR QMGR QMGR
16 AMS Policies Stored on SYSTEM.PROTECTION.POLICY.QUEUE Signature Algorithm MD5 or SHA1 Encryption Algorithm RC2, DES, 3DES, AES128 or AES256 Acceptable Signer(s) licable when signing messages Message Recipient(s) licable when signing and encrypting messages
17 Policy Administration Command line tools setmqspl : Set message protection policy -m QMGR -p Policy_Name -s Signing_Algorithm -a Authorised Signers -e Encryption_Algorithm -r Message_Recipients dspmqspl : Display message protection policies -m QMGR [-export] [-p Policy_Name]
18 Policy Administration
19 Securing an MQ lication Alice ALICE.Q Bob Sending AMS_QM Receiving
20 Securing an MQ lication Alice ALICE.Q Bob Sending AMS_QM Receiving 1.Install AMS Interceptor
21 Securing an MQ lication Alice ALICE.Q Bob Sending AMS_QM Receiving Keystore Alice Priv Alice Pub Keystore Bob Priv Bob Pub 1.Install AMS Interceptor 2.Create public / private key pairs
22 Securing an MQ lication Alice ALICE.Q Bob Sending AMS_QM Receiving Keystore Alice Priv Alice Pub Bob Pub Keystore Bob Priv Bob Pub 1.Install AMS Interceptor 2.Create public / private key pairs 3.Copy recipient's public key
23 Securing an MQ lication Policy ALICE.Q Privacy Recipient : Bob Alice ALICE.Q Bob Sending AMS_QM Receiving Keystore Alice Priv Alice Pub Bob Pub Keystore Bob Priv Bob Pub 1.Install AMS Interceptor 2.Create public / private key pairs 3.Copy recipient's public key 4.Define protection policy for the queue
24 WebSphere MQ AMS : Integrity Message Format Original MQ Message Message Properties Message Data AMS Signed Message Message Properties PDMQ Header PKCS #7 Envelope Message Data Signature
25 WebSphere MQ AMS : Privacy Message Format Original MQ Message Message Properties Message Data AMS Encrypted Message Message Properties PDMQ Header PKCS #7 Envelope Key encrypted with certificate Data encrypted with key Message Data Signature
26 Availability MQ AMS dates : Released : 8 th Oct Released : 14 th April 2011 Added support for crypto hardware to store keys 90 day Trial version available to download Platform support Same as MQ (except IBM i) Works with MQ 6 & MQ 7 queue managers (JMS interceptor requires v7 jars)
27 Summary AMS provides message level security Complements base MQ security, not a replacement Can be applied selectively at a queue level Each message protected with asymmetric key cryptography lication to application, end to end security No code changes required Well suited to point to point applications
28 The rest of the week Monday Tuesday Wednesday Thursday Friday 08:00 More than a buzzword: Extending the reach of your MQ messaging with Web 2.0 Batch, local, remote, and traditional MVS - file processing in Message Broker Lyn's Story Time - Avoiding the MQ Problems Others have Hit 09:30 WebSphere MQ 101: Introduction to the world's leading messaging provider The Do s and Don ts of Queue Manager Performance So, what else can I do? - MQ API beyond the basics MQ Project Planning Session 11:00 MQ Publish/Subscribe The Do s and Don ts of Message Broker Performance 12:15 MQ Freebies! Top 5 SupportPacs 01:30 Diagnosing problems for MQ 03:00 Keeping your eye on it all - Queue Manager Monitoring & Auditing 04:30 Message Broker administration for dummies The doctor is in. Hands-on lab and lots of help with the MQ family WebSphere Message Broker 101: The Swiss army knife for application integration The MQ API for dummies - the basics All About WebSphere MQ File Transfer Edition The Dark Side of Monitoring MQ - SMF 115 and 116 record reading and interpretation Under the hood of Message Broker on z/os - WLM, SMF and more For your eyes only - WebSphere MQ Advanced Message Security 06:00 Free MQ! - MQ Clients and what you can do with them Diagnosing problems for Message Broker Using the WMQ V7 Verbs in CICS Programs Getting your MQ JMS applications running, with or without WAS Message Broker Patterns - Generate applications in an instant Keeping your MQ service up and running - Queue Manager clustering MQ Q-Box - Open Microphone to ask the experts questions What's new for the MQ Family and Message Broker
29 Questions & Answers Please fill out your evaluation forms Session # 9417
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