PEM Packages

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

ASN.1 encoder and decoder for Node.js with no dependencies (fork of asn1.js using native BigInt)

Create RSA Public Key PEM from Modulus and Exponent value in node.js

Pure JavaScript X509 certificate tools for Node.js

ASN.1/DER, PEM for Node.js

A framework for building letsencrypt clients, forked from letiny

Wrapper around an Elliptic Curve private or public keys

Library for encoding ECDSA private keys to PEM, DER and raw hex formats

Miscellaneous Encoding Utilities for Crypto-related Objects in JavaScript

Universal Module for Cryptographic Key Utilities in JavaScript, including PEM-JWK converters

Self-signed PEM key and certificate ready for use in your HTTPS server

Convert Buffers to/from PEM strings, and read/write SSH/RSA key files. supports DEK encryption.

JSON Web Key

Lightweight support for fetching JWKs.

The pem module wrapped in a promises API

JavaScript cryptographic utilities for OpenSSL-WebCrypto compatibility including PEM/X509-JWK converter.

Generic ASN.1 parser/decoder that can decode any valid ASN.1 DER or BER structures.

Decrypt encrypted ssh private keys

RSA XML Decrypter

Make a Development Cert