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RSA / EC Key Pair Generator

RSA / EC Key Pair Generator

Generate cryptographically secure RSA and EC key pairs for JWT signing (RS256, ES256) in PEM and JWK formats

Security Notice

• All key generation happens locally in your browser - no data is sent to our servers

• Private keys should be kept secure and never shared publicly

• For production use, consider using hardware security modules (HSMs) for key storage

• Regularly rotate your keys according to your security policy

Professional RSA EC Key Pair Generator for JWT Security

Our RSA EC Key Pair Generator is a professional tool designed specifically for generating cryptographically secure key pairs for JWT (JSON Web Token) asymmetric signing algorithms. Whether you need to generate RSA key for JWT RS256 signing or EC keys for ES256 algorithms, this RSA private public key generator provides enterprise-grade security with support for both PEM and JWK formats.

RSA Key Generation for JWT RS256 Signing

RSA (Rivest-Shamir-Adleman) key pairs are essential for JWT RS256 asymmetric signing. When you generate RSA key for JWT applications, you create a mathematically linked pair where the private key signs tokens and the public key verifies signatures. Our RSA private public key generator supports multiple key sizes:

  • 2048-bit RSA Keys: Industry standard for most JWT applications, providing excellent security-performance balance for generate RSA key for JWT scenarios.
  • 3072-bit RSA Keys: Enhanced security level, recommended for high-security JWT implementations requiring stronger RSA private public key generator output.
  • 4096-bit RSA Keys: Maximum security for critical applications, though with increased computational overhead when you generate RSA key for JWT systems.

Elliptic Curve (EC) Key Generation for JWT ES256

Elliptic Curve cryptography offers equivalent security to RSA with smaller key sizes, making EC key generation ideal for performance-critical JWT applications. Our RSA EC Key Pair Generator supports industry-standard curves:

  • P-256 (secp256r1): Most widely used curve for JWT ES256 signing, providing 128-bit security equivalent.
  • P-384 (secp384r1): Higher security level with 192-bit equivalent, suitable for government and enterprise applications.
  • P-521 (secp521r1): Maximum security curve offering 256-bit equivalent protection for ultra-secure JWT implementations.

Output Formats: PEM and JWK

Our RSA private public key generator supports both industry-standard formats to ensure compatibility with your JWT infrastructure:

  • PEM Format: Privacy-Enhanced Mail format, widely supported across programming languages and frameworks. Perfect for server-side JWT signing when you generate RSA key for JWT applications.
  • JWK Format: JSON Web Key format, designed specifically for web applications and APIs. Ideal for modern JWT implementations requiring JSON-based key management.

JWT Asymmetric Signing Applications

When you generate RSA key for JWT or EC key pairs, you enable secure asymmetric signing for various applications:

  • Microservices Authentication: Use our RSA private public key generator to create keys for service-to-service JWT authentication.
  • API Security: Generate RSA key for JWT API access tokens with verifiable signatures.
  • Single Sign-On (SSO): Create key pairs for enterprise SSO systems using JWT RS256 or ES256 algorithms.
  • OAuth 2.0 / OpenID Connect: Generate cryptographically secure keys for modern authentication protocols.
  • Mobile App Security: Use EC keys for efficient JWT signing in mobile applications with limited computational resources.

Security Best Practices

Our RSA EC Key Pair Generator follows industry security standards to ensure your generated keys meet enterprise requirements:

  • Cryptographically secure random number generation for all key material
  • Client-side generation ensures private keys never leave your browser
  • No key storage or logging on our servers
  • Support for latest cryptographic standards and algorithms
  • Regular updates to maintain compatibility with evolving JWT specifications

Why Choose Our RSA Private Public Key Generator

Unlike basic key generators, our professional RSA EC Key Pair Generator is specifically optimized for JWT applications. Whether you need to generate RSA key for JWT RS256 signing or create EC key pairs for ES256 algorithms, our tool provides:

  • Multiple output formats (PEM and JWK) for maximum compatibility
  • Support for both RSA and EC algorithms in a single interface
  • Professional-grade security with no compromise on usability
  • Instant generation with no server-side processing
  • Copy-paste ready output for immediate integration

Integration Examples

After using our RSA private public key generator, you can immediately integrate the generated keys into your JWT workflow. The PEM format keys work seamlessly with popular libraries like jsonwebtoken (Node.js), PyJWT (Python), and jose4j (Java), while JWK format keys integrate directly with modern web frameworks and cloud services.

Start generating professional-grade RSA and EC key pairs for your JWT security implementation today. Our RSA EC Key Pair Generator ensures your applications benefit from the highest standards of cryptographic security while maintaining the flexibility needed for modern development workflows.

Key Features

  • • RSA key generation (2048, 3072, 4096 bits)
  • • EC key generation (P-256, P-384, P-521)
  • • PEM and JWK output formats
  • • JWT RS256/ES256 compatible
  • • Client-side generation
  • • No server storage
  • • Copy-paste ready output
  • • Professional security standards

Supported Algorithms

  • RS256: RSA with SHA-256
  • RS384: RSA with SHA-384
  • RS512: RSA with SHA-512
  • ES256: ECDSA with P-256 and SHA-256
  • ES384: ECDSA with P-384 and SHA-384
  • ES512: ECDSA with P-521 and SHA-512

Use Cases

  • • JWT token signing
  • • API authentication
  • • Microservices security
  • • OAuth 2.0 / OpenID Connect
  • • Single Sign-On (SSO)
  • • Mobile app security
  • • Digital signatures
  • • Certificate generation