For Windows, the software interface is PuTTYgen.exe, whereas, for Linux OS the command-line adaptation is available using SSH commands. The aforementioned public-key cryptosystems principally focus on secure data transmission and digital signatures.Īlthough PuTTYgen collects keys in its native file format i.e.ppk files, the keys can easily be converted to any file format. The key generation utility – PuTTYgen can create various public-key cryptosystems including Rivest–Shamir–Adleman (RSA), Digital Signature Algorithm (DSA), Elliptic Curve Digital Signature Algorithm (ECDSA), and Edwards-curve Digital Signature Algorithm (EdDSA) keys.

1.3.3 Types of Keys Supported on PuTTYgen.1.3.2 Various Command Line Options of PuTTY in Linux.1.3.1 Generate Key Pair for Authentication in Linux.