Fix itthe crypto bottles

The Quiet Master of Cryptocurrency — Nick Szabo

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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. The package is organised so that it contains a light-weight API suitable for use in any environment including the J2ME with the additional infrastructure to conform the algorithms to the JCE framework. If you have been using Serpent, you will need to either change to Tnepres, or take into account the fact that Serpent is now byte-swapped compared to what it was before.

Okay, so we have had to do another release. The issue we have run into is that we probably didn't go far enough in 1. While this release does change a lot it is relatively straight forward to do a port fix itthe crypto bottles we have a porting guide which explains the important ones.

The area there has been the most change in is the ASN. On the bright side the rewrite did allow us to eliminate a few problems and bugs in the ASN. Baring security patches we expect fix itthe crypto bottles.

The next release of BC will be version 2. For this reason a lot of things in 1. In addition a lot of methods and some classes that were deprecated for reasons of been confusing, or in some cases just plan wrong, have been removed. So there are four things useful to fix itthe crypto bottles about this release: It's not a simple drop in like previous releases, if you wish migrate to it you will need to recompile your application.

If you avoid deprecated methods it should be relatively painless to move to version 2. RecipientId class now has a collection of subclasses to allow for fix itthe crypto bottles specific recipient matching. If you are creating your own recipient ids you should use the constructors for the subclasses rather than relying on the set fix itthe crypto bottles inherited from XCertSelector. This has been fixed. SM3 has now been added as an acceptable algorithm for TSP timestamps.

SM2 fix itthe crypto bottles were using the wrong default identity value. This has now been fixed. These have been fixed. ASN1GeneralizedTime will now accept a broader range of input strings. EC key generation and signing now use cache-timing resistant table lookups. Performance of the DSTU algorithms has been greatly improved. Further work has been done on improving SHA-3 performance. The Blake2s message digest has been added to the provider and the lightweight API. A DEROtherInfo generator for key agreement using NewHope as the source of the shared private info has been added that can be used in conjunction with regular key agreement algorithms.

Use of the seeded constructor with SecureRandom and the BC provider in first position could cause a stack overflow error. Some class fix itthe crypto bottles used by the provider would fail if the BC jar was loaded on the boot class path. An off-by-one range check in SM2Signer has been fix itthe crypto bottles. Retrieving an SM2 key fix itthe crypto bottles a certificate could result in a NullPointerException due to a problem with the curve lookup.

DTLS now supports records containing multiple handshake messages. Support has been added for using these keys in certificates as well.

A new system property org. Fix itthe crypto bottles default behavior remains as reject malformed integers. SignedMailValidator would only pick up the first email address in a DN, even when there was more than one.

Work has been done on speeding up the SHA-3 family. The functions are now 3 to 4 times faster. Some EC aliases in the provider had no corresponding implementations. These have been cleaned up. TimeStampResponses now support definite-length encoding to allow the preservation of order in certificates sets for legacy responses.

TLS exceptions have been made more directly informative. Multiple validity periods in PGP keys were resolved in an adhoc fashion, in line with GPG's approach the PGP has been changed to return the most recent validity period fix itthe crypto bottles. A couple of bogus aliases associated AlgorithmParameters that did not resolve in the provider have been removed.

This has now been corrected to throw a NoSuchAlgorithmException. An unrecognised HMAC will also now result in an exception.

Reuse of a Blake2b digest with a call to reset rather than doFinal could result in incorrect padding being introduced and the wrong digest result produced. SM2 signatures, key exchange, and public key encryption has been added to the lightweight API.

A full set of ASN. A test client for EST which will interop with the test server at http: If you have been relying on key pair generation without passing in parameters generated keys will now be larger. Further work has been done on preventing accidental re-use of a GCM cipher without first changing its key or iv. Using unknown status with the ASN. Diffie-Hellman public keys are now validated where parameters allow it.

Some validations are now applied to RSA moduli and public exponents. Support has been added for defining your own curves and making them available to the key generators and factories. Work has been done to improve the "constant time" fix itthe crypto bottles of the RSA padding mechanisms.

Strict encoding enforcement has been introduced for ASN1Integer. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of "invisible" data into a signed structure.

AESFastEngine has a side channel leak if table accesses can be observed. The use of lookup large static lookup tables in AESFastEngine means that where data accesses by the CPU can be observed, it is possible to gain information about the key used to initialize the cipher. Static ECDH vulnerable to carry propagation bug. Carry propagation bugs in the implementation of squaring for several raw math classes have been fixed org.

These classes are used by our custom elliptic curve implementations org. Such errors would have been detected with high probability by the fix itthe crypto bottles validation for our scalar multipliers. DSA signature generation vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding in 1. DSA key pair generator generates a weak private key if used with default values.

In earlier releases this can be dealt with by explicitly passing parameters to the key pair generator. This algorithm is now removed from the provider. Other party DH public key not fully validated. This can cause issues as invalid keys can be used to reveal details about the other party's private key where static Diffie-Hellman is in use.

As of this release the key parameters are checked on agreement calculation. These are not enabled by default in our TLS implementations, but they can be enabled explicitly by users. The JceAsymmetricValueDecryptor in the CRMF package now attempts to recognise a wider range of parameters for the key wrapping algorithm, rather than relying on a default.

An occasional error in Poly due to sign-extension has been fixed. TimeStampRequest was always failing to validate if extensions were present. Creation of multiple providers concurrently could cause issues with a non-synchronized Map in the provider. Code is now synchronized. OAEP encryption for a zero length message would create invalid cipher text.

If the BC provider was not registered, creating a CertificateFactory would cause a new provider object to be created. Support is in place for the regular configuration using SHA as the flattening algorithm for the agreed value.

PGP armored output can now be generated without a version string. The TimeStampTokenGenerator will now generate timestamps down to a millisecond resolution. Additional search methods have been added to PGP public and secret key rings. The IES engine would sometimes throw a "too short" exception on small messages which were the right length.

It turns out, after advice one way and another that the NESSIE test vectors for Serpent are now what should fix itthe crypto bottles followed and that the vectors in the AES submission are regarded as an algorithm called Tnepres.

Problems with DTLS record-layer version handling were resolved, making version negotiation work properly. The internal counter can be turned on by passing an IV smaller than the block size of the cipher's algorithm. With our default TLS configuration, fix itthe crypto bottles do not believe there is an exploitable vulnerability in any earlier releases.

A change in JDK 1. CMSSignedData now supports verification of signed attributes where the calculated digest uses a different algorithm from the digest used in the signature. A new class XTrustedCertificateBlock is now returned containing both the certificate and the trust information. Adding a password to a PGP key which did not previously have one would result in an improperly formatted key. PGP signature hashed sub-packets fix itthe crypto bottles long length encodings would fail to validate on signature checking.

The PKCS 12 KeyStore implementation would sometimes leave orphaned chain certificates in the key store after private key deletion. The CertPath processor would occasionally fail to match a DistributionPoint name correctly.

In order to avoid confusion about thread safety, BCrypt now uses a new instance for hash calculation every time it is invoked.

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15 comments

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Nick Szabo NickSzabo4 is a polymath. The breadth and depth of his interests and knowledge are truly astounding. Nick also designed Bit Gold , which many consider the precursor to Bitcoin. This podcast is brought to you by FreshBooks. FreshBooks is the 1 cloud bookkeeping software, which is used by a ton of the start-ups I advise and many of the contractors I work with. It is the easiest way to send invoices, get paid, track your time, and track your clients.

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This podcast is also brought to you by Audible. I have used Audible for years, and I love audiobooks. I have two to recommend:. All you need to do to get your free day Audible trial is visit Audible. Choose one of the above books, or choose any of the endless options they offer. That could be a book, a newspaper, a magazine, or even a class. What was your favorite quote or lesson from this episode? Please let me know in the comments.

Many of the world's most famous entrepreneurs, athletes, investors, poker players, and artists are part of the book. The tips and strategies in Tribe of Mentors have already changed my life, and I hope the same for you. Here's a very partial list: Check it all out by clicking here. You are commenting using your WordPress. You are commenting using your Twitter account. You are commenting using your Facebook account.

Notify me of new comments via email. Notify me of new posts via email. Remember what Fonzie was like? Have fun and thanks for adding to the conversation! Thanks to Brian Oberkirch for the inspiration. Like Liked by 1 person.

Like Liked by 2 people. Tim, thank you for this. Now is tomorrow is now.. Any chance your podcasts will have transcripts soon? Very glad to see this discussion on here!

Imagine if every time you upvoted, commented, or created content, it was mining cryptocurrency. Also, imagine if your biggest fans could get cryptocurrency rewards for promoting your work. Like Liked by 3 people. I totally agree with David Kadavy, Steem has been one of the best things that I came across in the cyptocurrency world the community is just amazing! Great suggestion but I think this is messy. Tim already has a loyal following who trust him and purchase anything he puts out.

STEEM requires time to master and might not be worth it for someone who already has so much clout. Thank you for this episode! One of my favs, loved the talk on Pascal scams quite a golden nugget. Any updates on when it will? Really looking forward to this one as I just made the the jump into cryptocurrency as my first ever investment! Unable to play the episode. Have not had an issue before.

Nick and Naval seemed to suggest that there was a limit on the number of transactions per block apparently a hotly debated topic. From what I understand of the blockchain, each block only has the root of a Merkle tree in it and so there theoretically could be any number of transactions in the block. Where does the limitation come from?

Good episode, and good info. Dash solved the blockchain size problem in one day. Dash pro-actively solved the slow transaction problem by having incentivised masternodes to produce a huge and robust infrastructure of more than 4, active nodes.

AND designing and implementing Instant send. Sent in a few seconds, not minutes or hours or days. You should have a conversation with Amanda B. Johnson to fill in these gaps in your knowledge base.

Considering that, historically, the NSA is years ahead of anything we already publicly have. Tim released this episode during a bullish market as a bubble was growing. As always thanks for the awesome podcast!! This podcast was very helpful and definitely helped in breaking it down into simpler terms.

Big fan of all of your stuff…own every book and am starting to listen to your podcasts now too! Some of our partners include U. Live Prompter is completely subsidized by Facebook, so its free for you to use and will honestly just improve the quality of your Live sessions. I dont mean to spam you here, but just am trying everything I can to get in touch.

Feel free to email me if interested in learning more. For some reason this is still not coming up on Pocket Casts andorid. Any idea why this may be? Excited for this episode. I listen to a lot of your stuff and this was the best. This is going to be a huge space — please give us more crypto information!

Great interview, I just wish Naval would have let Nick answer the questions you originally pointed directly to Nick. Understandable if he was sharing the stage with someone of lesser knowledge or intellect, but the title of your Podcast was about Nick.

While I understand the logic of bringing in Naval to co-host, it really turned into a Naval interview, not a Nick interview, and I was left longing for more. A follow-up podcast with Nick would be greatly appreciated if the the crypto space holds your curiosity and you feel more comfortable going one on one with him. If not, consider bringing on Andreas Antonopolis to co-host. I originally thought this is who you were going to bring on when you asked subscribers for questions.

Frustrating that he kept speaking for Nick. Almost found Naval rude in how he would force his dialogue. I listened to every minute some podcasts I skip around a bit and listened again to some of the higher level concepts. Cryptocurrency makes way more sense now! Hugely informative, thank you Tim! Are the audio products available in a format that Hard of Hearing folks can access? Captions or the script would be wonderful. Good mix of theory and practice on cryptocurrency as well as other thought provoking ideas and concepts.

I was excited to hear that you were putting on this podcast with Nick and the questions were great. If I had to adjust something, it would be nice if Tim reigned in Naval on some the conversation, Naval tends to go on and on and sometimes off topic to always make some sort of point rather than being informative. This was effectively an interview of Naval Ravikant.

He answered half or more of the questions himself. Did much more talking than Szabo. Nick assumed a lot of knowledge that non-tech people would not understand, and Naval possibly even recorded explainers after the show that were then inserted. My question is, now that the worlds largest banks are finally jumping on board, and are in fact creating their very own cryptocurrencies, how will this effect other currencies like bitcoin, ethereum, litecoin etc.?

Negatively or in a positive way? I really hope not, but this is where my mind immediately goes when I think of the pound gorilla entering the room. Singapore is working on a tokenized currency based on the Ethereum platform. Other countries doing something like this makes a lot more sense than building their own currency from scratch.

Using Ethereum as a common protocol allows for much easier interoperability between currencies. One of the best explanations of the phenomenon to date.

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