PKCS#8 to PKCS#1 Converter Tool Online | JavaInUse Security Tools
PKCS#8 to PKCS#1 Converter Tool
Downgrade a PKCS#8 key for VPN concentrators, HSMs, or firmware that still insists on PKCS#1. The workflow rewraps your key with optional passphrase rotation.
PKCS#8 â PKCS#1
Upload & configure
Legacy compatibility
VPN & appliance ready. Produce PKCS#1 keys for systems that have yet to modernize.
Consistent tooling. The converter shells out to openssl pkcs8 so results match manual CLI runs.
Audit-friendly. Verbose mode surfaces warnings about unencrypted output and reused passphrases.
Safe workspace. Uploaded keys live only in temp directories that are deleted after download.