rsa算法的java代码，有界面，需要到http://www.bouncycastle.org下载bcprov-jdk14-123.jar-rsa algorithm java code, there are interfaces, you need to http://www.bouncycastle.org download bcprov-jdk14-123.jar

java 安全相关 包括 base64，MD5 rsa 等-Java Security and MD5 rsa Base64 DH，DESA just a jar

Command line tool to sign jar files (including APKs and OTA updates) in a way compatible with the mincrypt verifier, using SHA1 and rsa keys.