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Latest Java Releases

Release 1.66 is now available for download.

This release is primarily a bug fix release and addresses a regression in 1.65 concerning RSA private key serialisation. EdDSA verifiers now reset correctly after rejecting overly long signatures. Errors in KMAC calculation affecting some MAC output sizes, padding for cSHAKE for some lengths of N and S, and encoding of HSS public keys have also been fixed. Performance issues around GCMParameterSpec and the Base64 encoder have also been addressed. Aria and Camellia have been added to the BCJSSE as well as support for RSAPSS signature schemes. Support has also been added for the PKIXRevocationChecker for users of Java 8 and later and multi-release support has been added for Java 11 XECKeys and Java 15 EdECKeys. Further details on other additions and bug fixes can be found in the release notes file accompanying the release.

Change Warning (users of 1.52 or earlier): The PEM Parser now returns an X509TrustedCertificate block when parsing an openssl trusted certificate, the new object was required to allow the proper return of the trusted certificate's attribute block. Please also see the porting guide for advice on porting to this release from much earlier ones (release 1.45 or earlier).

Further Note (users of Oracle JVM 1.7 or earlier, users of "pre-Java 9" toolkits): As of 1.63 we have started including signed jars for "jdk15to18", if you run into issues with either signature validation in the JCE or the presence of the multi-release versions directory in the regular "jdk15on" jar files try the "jdk15to18" jars instead. Please also note the JCE certificate in the public access versions of Oracle Java 6 (6u45) and Oracle Java 7 (7u80) is expiring on the 20th April this year (2020). Oracle does distribute JVMs for Java 6 and Java 7 with a newer, and stronger, certificate to holders of Java Support Contracts.

Others have contributed to this release, both with code and/or financially and you can find them listed in the contributors file. We would like to thank holders of Crypto Workshop support contracts for additional time that was contributed back to this release through left over consulting time provided as part of their support agreements. Thank you, one and all!

If you're interested in grabbing the lot in one hit (includes JCE, JCE provider, light weight API, J2ME, range of JDK compatibility classes, signed jars, fries, and king prawns...) download crypto-166.tar.gz or, otherwise if you are only interested in one version in particular, see below. Early access to our FIPS hardened version of the Java APIs is now available for both BC-FJA 1.0.3 and BC-FJA 2.0.0 as well, contact us at for further information.

Get the most out of your Bouncy Castle experience!

Get a support contract through Crypto Workshop. We have found two things that distinguish our support contract holders from our regular user base. Developers with access to a support contract are more likely to raise an issue with us early rather than try and muddle through, and developers with access to a support contract also take a more active interest in the beta releases, both FIPS and non-FIPS. The second one is useful as it means any issues or shortfalls in the beta are able to be fixed while the updates are still in beta. The first one is a real cost saver as it does not lead to us receiving emails starting with "Our development team has spent (some number of) weeks trying to work out..." It is much cheaper to have a support contract!

Signed JAR files

From release 1.40 some implementations of encryption algorithms were removed from the regular jar files at the request of a number of users. Jars with names of the form *-ext-* still include these (at the moment the list is: NTRU).

  Provider Clean room JCE
and provider
JDK 1.5 - JDK 1.15 bcprov-jdk15on-166.jar
  bcpkix-jdk15on-166.jar bcmail-jdk15on-166.jar bcpg-jdk15on-166.jar bctls-jdk15on-166.jar bctest-jdk15on-166.jar
JDK 1.5 - JDK 1.8 bcprov-jdk15to18-166.jar
  bcpkix-jdk15to18-166.jar bcmail-jdk15to18-166.jar bcpg-jdk15to18-166.jar bctls-jdk15to18-166.jar bctest-jdk15to18-166.jar
JDK 1.4 bcprov-jdk14-166.jar
  bcpkix-jdk14-166.jar bcmail-jdk14-166.jar bcpg-jdk14-166.jar bctls-jdk14-166.jar (low-level only) bctest-jdk14-166.jar
JDK 1.3 bcprov-jdk13-166.jar
bcpkix-jdk13-166.jar bcmail-jdk13-166.jar bcpg-jdk13-166.jar   bctest-jdk13-166.jar
JDK 1.2 bcprov-jdk12-166.jar
bcpkix-jdk12-166.jar   bcpg-jdk12-166.jar   bctest-jdk12-166.jar

The following signed provider jars are provided so that you can make use of the debug information in them. In the case of the non-provider jars (bcpkix, bcpg, and bcmail), the jar files do not need to be signed to work. You can rebuild them with debug turned on, or operate directly from the source, if you need.

  Providers with debug
JDK 1.5 - JDK 1.15 bcprov-debug-jdk15on-166.jar bcprov-ext-debug-jdk15on-166.jar
JDK 1.5 - JDK 1.8 bcprov-debug-jdk15to18-166.jar bcprov-ext-debug-jdk15to18-166.jar
JDK 1.4 bcprov-debug-jdk14-166.jar bcprov-ext-debug-jdk14-166.jar

Sources and JavaDoc

JDK 1.5 - JDK 1.15 bctls-jdk15on-166.tar.gz
JDK 1.4 (low-level only) bctls-jdk14-166.tar.gz

JDK 1.5 - JDK 1.15 bcpkix-jdk15on-166.tar.gz
JDK 1.4 bcpkix-jdk14-166.tar.gz
JDK 1.3 bcpkix-jdk13-166.tar.gz
JDK 1.2 bcpkix-jdk12-166.tar.gz
JDK 1.1 bcpkix-jdk11-166.tar.gz

JDK 1.5 - JDK 1.15 bcpg-jdk15on-166.tar.gz
JDK 1.4 bcpg-jdk14-166.tar.gz
JDK 1.3 bcpg-jdk13-166.tar.gz
JDK 1.2 bcpg-jdk12-166.tar.gz
JDK 1.1 bcpg-jdk11-166.tar.gz

JDK 1.5 - JDK 1.15 bcmail-jdk15on-166.tar.gz
JDK 1.4 bcmail-jdk14-166.tar.gz
JDK 1.3 bcmail-jdk13-166.tar.gz

  JCE with provider and lightweight API Lightweight API  
JDK 1.5 - JDK 1.15 bcprov-jdk15on-166.tar.gz lcrypto-jdk15on-166.tar.gz
JDK 1.4 bcprov-jdk14-166.tar.gz lcrypto-jdk14-166.tar.gz
JDK 1.3 jce-jdk13-166.tar.gz lcrypto-jdk13-166.tar.gz
JDK 1.2 jce-jdk12-166.tar.gz lcrypto-jdk12-166.tar.gz
JDK 1.1 jce-jdk11-166.tar.gz lcrypto-jdk11-166.tar.gz
J2ME     lcrypto-j2me-166.tar.gz

  Releases no longer maintained
JDK 1.0 lcrypto-jdk10-133.tar.gz


  1. The tar archives were created using GNU tar (some versions of Solaris tar will have problems extracting them)
  2. The J2ME source distribution includes zips for the class files

You can find the release notes, documentation, and specifications here.

You can find checksums for confirming the integrity of the distributions here

Too slow? You can also find the latest versions on one of our mirrors:

Beta Access
The current working betas, when available, for the next release for JDK 1.5 to JDK 1.15 can be found at If you need a beta to be made available for another version of Java please ask by emailing

Maven Access
The BC jars are now mirrored on the Maven central repository. You can find them at

GIT Access
Just want to look at the source? The source code repository is now mirrored on GitHub and accessible from here. The repository can be cloned using either

git clone
or git protocol
git clone git://

CVS Access
Just want to look at the source? The source code repository is accessible via ViewVC from here

FTP Access
Previous releases, as well as the latest ones, can be downloaded from our ftp server Please note the FTP server does not support passive mode.