When we create an OpenPGP key pair, a few parameters must be passed. These include:
Encryption key size in bytes (recommended between 1024 and 3072)
User ID
key algorithm (RSA or ELGAMAL)
private key password
list of preferred compression algorithms
list of preferred signature hash algorithms
list of preferred symmetric encryption algorithms
key expiration date (optional)
Mar 10, 2014 Key pair generation in elliptic curve follows the same principles as the other algorithms, the main difference being that, unlike algorithms such as RSA, elliptic curve keys exist only in the context of a particular elliptic curve and require to have curve parameters associated with them to be of any use.
The genkey command of the keytool program enables you to generate a key pair. To Generate a Key Pair and a Self-Signed Certificate. Navigate to the JAVAHOME/bin directory, where JAVAHOME is the installation directory of the Java SDK. Enter the following command: When prompted, enter your keystore password.
Key generation. The keys for the RSA algorithm are generated in the following way: Choose two distinct prime numbers p and q. For security purposes, the integers p and q should be chosen at random, and should be similar in magnitude but differ in length by a few digits to make factoring harder.
One note regarding the naming convention for the User ID parameter. The original PGP(r) software is delimiting the email in the User ID with < and > like : “Richard C. <[email protected]>”
An overloaded method exists that accepts key expiration date as a last parameter.
Table of Contents Need for speed hot pursuit serial key generator download.
Generate Rsa Key Pair Online
1. Key generation with a KeyStore
2. Key generation directly
Rsa Key Pairs
3. Exception handling
1. Key generation example
Rsa Key Generation Java
After the key pair is generated usually we will export the public key and send it to our partners.
Below is a screenshot of the generated key properties when we open it with PGP (r) 10:
2. Key generation directly
We can avoid the use of a KeyStore class and generate a key pair in the memory in a PGPKeyPair object. In that case we also have to export it afterwards.
3. Exception Handling
The key pair generation methods simply throw com.didisoft.pgp.PGPException in case the key generation fails.
Summary
This chapter demonstrated how to generate an RSA OpenPGP key pair with DidiSoft OpenPGP Library for Java. Java keytool importkeystore.