Private Key Formatter

The Private Key Formatter re-encodes private keys from one standard to another without changing the underlying cryptographic material. It targets developers, security engineers, and DevOps teams who import keys into servers, cloud environments, or CI/CD pipelines and encounter format mismatches. The tool accepts PEM PKCS1, PEM PKCS8, DER, and OpenSSH private key formats and produces a selected target encoding. It validates structure, supports common algorithms (RSA, ECC, Ed25519), and can operate with an unencrypted key or a passphrase-protected key when a passphrase is supplied. The processing is in-memory and non-persistent, with no network calls. The formatter handles PEM line-wrapping, proper headers/footers, and consistent encoding rules to minimize import errors. It does not generate new keys, sign data, or verify cryptographic properties beyond structural correctness. This makes it suitable for automation in build pipelines and configuration workflows where deterministic, standards-compliant key representations are required. The tool differentiates between required parsing/formatting capabilities and optional features such as decryption and re-encryption when a passphrase is provided. It is designed for cross-platform environments and supports keys used in SSH, TLS, and related tooling across industries and regions.