To System Check - To Suggest Key Sizes - To Debian Vulnerability Handling
Weak Keys System Check - Small Exponent
How to prevent Small Exponents
OpenSSL
One parameter in the openssl rsa keygen commandline effects the exponent generation
openssl genrsa -aes256 -out test5.yourdomain.tld.key -3 1024
instead of parameter -3 use -f4
openssl genrsa -aes256 -out test5.yourdomain.tld.key -f4 1024 builds exponent 0x10001
Arbitration case a20110312.1