utility for translating cryptographic keys between representations

 This Node.js library implements routines
 to translate between multiple cryptographic key representations.
 .
 RSA
  * PKCS1
  * PKCS8
  * JWK
 .
 ECDSA - secp256k1 (Blockchain Curve)
  * PKCS1 (Private Only)
  * PKCS8
  * JWK
  * BLK (Private Key Hex String)
 .
 ECDSA - secp256r1 (P-256)
  * PKCS1 (Private Only)
  * PKCS8
  * JWK
 .
 ECDSA - secp384r1 (P-384)
  * PKCS1 (Private Only)
  * PKCS8
  * JWK
 .
 ECDSA - secp521r1 (P-521)
  * PKCS1 (Private Only)
  * PKCS8
  * JWK
 .
 Node.js is an event-based server-side JavaScript engine.