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Download Bouncy Castle for Java

Welcome to the download page for the general edition of Bouncy Castle Java. In addition to the available access options, including GitHub, Maven Central, and direct download, you will find searchable release notes and links to API and other documentation.

 

Bouncy Castle Java
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GitHub

Access the Bouncy Castle APIs Java package on GitHub, where you can also report issues, join discussions, and contribute to the software.

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Documentation 

Explore the Bouncy Castle for Java documentation online for concise guidance and examples.

View the Documentation

Join the discussion

You can ask questions and learn from specialists in the Bouncy Castle Java forum on GitHub Discussions. We highly appreciate and value your input.

Go to GitHub Discussions

Report an issue

If you encounter any issues that require attention, feel free to report them in our GitHub repository. 

Go to GitHub to Report an issue

Release notes

Find out detailed information about the latest release and search in older release notes.

Go to Release notes

Beta releases

The current working betas, when available, for the next release for JDK 1.8 and later can be found here. If you need a beta to be made available for another version of Java please ask by emailing: feedback-crypto@bouncycastle.org.

Download the latest Beta release

Donate to support the Bouncy Castle APIs

Supporting Bouncy Castle is now a substantial effort, the Java API is now over 300,000 lines, the C# one well past 140,000.

Donate

Bouncy Castle Java Downloads

Except where otherwise stated, this software is distributed under the regular Bouncy Castle license. For full details of other licenses involved, see Third party licenses. 

Distribution Files (JAR and ZIP format)

Compiled classes, sources and JavaDoc for Java 1.8 and later.

Provider bcprov-jdk18on-1.87.jar bcprov-jdk18on-1.87-sources.jar bcprov-jdk18on-1.87-javadoc.jar
Provider (Debug Version) bcprov-debug-jdk18on-1.87.jar    
ASN.1 Utility Classes bcutil-jdk18on-1.87.jar bcutil-jdk18on-1.87-sources.jar bcutil-jdk18on-1.87-javadoc.jar
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk18on-1.87.jar bcpkix-jdk18on-1.87-sources.jar bcpkix-jdk18on-1.87-javadoc.jar
SMIME bcmail-jdk18on-1.87.jar bcmail-jdk18on-1.87-sources.jar bcmail-jdk18on-1.87-javadoc.jar
Jakarta SMIME bcjmail-jdk18on-1.87.jar bcjmail-jdk18on-1.87-sources.jar bcjmail-jdk18on-1.87-javadoc.jar
OpenPGP/BCPG bcpg-jdk18on-1.87.jar bcpg-jdk18on-1.87-sources.jar bcpg-jdk18on-1.87-javadoc.jar
DTLS/TLS API/JSSE Provider bctls-jdk18on-1.87.jar bctls-jdk18on-1.87-sources.jar bctls-jdk18on-1.87-javadoc.jar
MLS API bcmls-jdk18on-1.87.jar bcmls-jdk18on-1.87-sources.jar bcmls-jdk18on-1.87-javadoc.jar
Test Classes bctest-jdk18on-1.87.jar    
Core Crypto   lcrypto-jdk18on-1.87.tar.gz lcrypto-jdk18on-1.87.zip 

Note: the compiled jar files in this distribution are all multi-release, if you need a version specific to Java 1.8, we recommend using the JDK 1.5 to JDK 1.8 release.

Compiled classes, sources and JavaDoc for Java 1.5 to Java 1.8.

Provider bcprov-jdk15to18-1.87.jar bcprov-jdk15to18-1.87-sources.jar bcprov-jdk15to18-1.87-javadoc.jar
Provider (Debug Version) bcprov-debug-jdk15to18-1.87.jar    
ASN.1 Utility Classes bcutil-jdk15to18-1.87.jar bcutil-jdk15to18-1.87-sources.jar bcutil-jdk15to18-1.87-javadoc.jar
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk15to18-1.87.jar bcpkix-jdk15to18-1.87-sources.jar bcpkix-jdk15to18-1.87-javadoc.jar
SMIME bcmail-jdk15to18-1.87.jar bcmail-jdk15to18-1.87-sources.jar bcmail-jdk15to18-1.87-javadoc.jar
Jakarta SMIME bcjmail-jdk15to18-1.87.jar bcjmail-jdk15to18-1.87-sources.jar bcjmail-jdk15to18-1.87-javadoc.jar
OpenPGP/BCPG bcpg-jdk15to18-1.87.jar bcpg-jdk15to18-1.87-sources.jar bcpg-jdk15to18-1.87-javadoc.jar
DTLS/TLS API/JSSE Provider bctls-jdk15to18-1.87.jar bctls-jdk15to18-1.87-sources.jar bctls-jdk15to18-1.87-javadoc.jar
Test Classes bctest-jdk15to18-1.87.jar    
Core Crypto   lcrypto-jdk15to18-1.87.tar.gz lcrypto-jdk15to18-1.87.zip 

Compiled classes, sources and JavaDoc for Java 1.4.

Provider bcprov-jdk14-1.87.jar bcprov-jdk14-1.87-sources.jar bcprov-jdk14-1.87-javadoc.jar
Provider (Debug Version) bcprov-debug-jdk14-1.87.jar    
ASN.1 Utility Classes bcutil-jdk14-1.87.jar bcutil-jdk14-1.87-sources.jar bcutil-jdk14-1.87-javadoc.jar
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk14-1.87.jar bcpkix-jdk14-1.87-sources.jar bcpkix-jdk14-1.87-javadoc.jar
SMIME bcmail-jdk14-1.87.jar bcmail-jdk14-1.87-sources.jar bcmail-jdk14-1.87-javadoc.jar
OpenPGP/BCPG bcpg-jdk14-1.87.jar bcpg-jdk14-1.87-sources.jar bcpg-jdk14-1.87-javadoc.jar
DTLS/TLS API/JSSE Provider bctls-jdk14-1.87.jar bctls-jdk14-1.87-sources.jar bctls-jdk14-1.87-javadoc.jar
Test Classes bctest-jdk14-1.87.jar    
Core Crypto   lcrypto-jdk14-1.87.tar.gz lcrypto-jdk14-1.87.zip 

Compiled classes, sources and JavaDoc for Java 1.3.

Clean Room JCE jce-jdk13-1.79.jar jce-jdk13-1.79.tar.gz jce-jdk13-1.79.zip
Provider bcprov-jdk13-1.79.jar bcprov-jdk13-1.79.tar.gz bcprov-jdk13-1.79.zip
ASN.1 Utility Classes bcutil-jdk13-1.79.jar bcutil-jdk13-1.79.tar.gz bcutil-jdk13-1.79.zip
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk13-1.79.jar bcpkix-jdk13-1.79.tar.gz bcpkix-jdk13-1.79.zip
SMIME bcmail-jdk13-1.79.jar bcmail-jdk13-1.79.tar.gz bcmail-jdk13-1.79.zip
OpenPGP/BCPG bcpg-jdk13-1.79.jar bcpg-jdk13-1.79.tar.gz bcpg-jdk13-1.79.zip
Test Classes bctest-jdk13-1.79.jar    
Core Crypto   lcrypto-jdk13-1.79.tar.gz lcrypto-jdk13-1.79.zip

Compiled classes, sources and JavaDoc for Java 1.2.

Clean Room JCE jce-jdk12-1.79.jar jce-jdk12-1.79.tar.gz jce-jdk12-1.79.zip
Provider bcprov-jdk12-1.79.jar    
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk12-1.79.jar bcpkix-jdk12-1.79.tar.gz bcpkix-jdk12-1.79.zip
OpenPGP/BCPG bcpg-jdk12-1.79.jar bcpg-jdk12-1.79.tar.gz bcpg-jdk12-1.79.zip
Test Classes bctest-jdk12-1.79.jar    
Core Crypto   lcrypto-jdk12-1.79.tar.gz lcrypto-jdk12-1.79.zip 

Compiled classes, sources and JavaDoc for Java 1.1.

Clean Room JCE jce-jdk11-1.79.tar.gz jce-jdk11-1.79.zip
PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL bcpkix-jdk11-1.79.tar.gz bcpkix-jdk11-1.79.zip
OpenPGP/BCPG bcpg-jdk11-1.79.tar.gz bcpg-jdk11-1.79.zip
Core Crypto   lcrypto-jdk11-1.79.tar.gz lcrypto-jdk11-1.79.zip 
Checksums

To confirm the integrity of the distributions, checksums are available:

Download Checksums

Maven Central Signing Key

If you are trying to confirm the signatures for artifacts from Maven Central, you can use the public key linked below.

Download bc_maven_public_key.asc

Release notes

Find out detailed information about the latest Bouncy Castle Java releases and search in older release notes.  

Latest release Release 1.87 Release 1.86 Release 1.85.2 Release 1.85.1 Release 1.85 Release 1.84 Release 1.83 Release 1.82 Release 1.81 Release 1.80 Release 1.79 Release 1.78.1 Release 1.78 Release 1.77 Release 1.76 Release 1.75 Release 1.74 Release 1.73 Release 1.72.2 Release 1.72.1 Release 1.72 Release 1.71 Release 1.70 Release 1.69 Release 1.68 Release 1.67 Release 1.66 Release 1.65 Release 1.64 Release 1.63 Release 1.62 Release 1.61 Release 1.60 Release 1.59 Release 1.58 Release 1.57 Release 1.56 Release 1.55 Release 1.54 Release 1.53 Release 1.52 Release 1.51 Release 1.50 Release 1.49 Release 1.48 Release 1.47 Release 1.46 Release 1.45 Release 1.44 Release 1.43 Release 1.42 Release 1.41 Release 1.40 Release 1.39 Release 1.38 Release 1.37 Release 1.36 Release 1.35 Release 1.34 Release 1.33 Release 1.32 Release 1.31 Release 1.30 Release 1.29 Release 1.28 Release 1.27 Release 1.26 Release 1.25 Release 1.24 Release 1.23 Release 1.22 Release 1.21 Release 1.20 Release 1.19 Release 1.18 Release 1.17 Release 1.16 Release 1.15 Release 1.14 Release 1.13 Release 1.12 Release 1.11 Release 1.10 Release 1.09 Release 1.08 Release 1.07 Release 1.06 Release 1.05 Release 1.04 Release 1.03 Release 1.02 Release 1.01 Release 1.00
Release 1.87
11 November, 2026
Bouncy Castle 1.87 is mainly a security and correctness release. It fixes twelve CVEs affecting OpenPGP key merging, RFC 3161 time-stamp validation (which no...

Bouncy Castle 1.87 is mainly a security and correctness release. It fixes twelve CVEs affecting OpenPGP key merging, RFC 3161 time-stamp validation (which no longer accepts MD5 imprints), X.500 name comparison, CMS and MIME parsing, PKIX revocation checking, and the NTRU+ and SNTRU Prime post-quantum KEMs. It also includes more than 200 other defect fixes across ASN.1/OER decoding, TLS 1.3, certificate path validation, the BCFKS, PKCS#12 and JKS key stores, and the ML-DSA, ML-KEM and SLH-DSA implementations.

New capabilities include OpenPGP post-quantum support per RFC 9980, composite ML-KEM through javax.crypto.KEM, updated HPKE, MLS, Merkle Tree Certificate and C509 drafts, Ascon algorithms in the BC provider, full RFC 4211 CRMF controls, and OpenPGP smart-card signing. There are also large speedups for SM9 (about 120× for pairing), BLS12-381, the NTRU-family KEMs, Blake3 and ChaCha20-Poly1305. Several changes are incompatible with 1.86, including HQC, Merkle Tree Certificates, C509 and ML-KEM key derivation. The old XMSS and LMS implementations under org.bouncycastle.pqc.crypto are removed, and Classic McEliece is deprecated.

For more information on the 1.87 release, see the release notes on GitHub.

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