Node.js bindings for OpenSSL's RSA public/private key cryptography, enabling encryption, decryption, signing, and verification.
URSA is a Node.js module that provides bindings to OpenSSL's RSA public/private key cryptography functions. It enables developers to perform asymmetric encryption, decryption, digital signing, and verification directly in JavaScript, using keys in PEM or SSH formats. It solves the need for native RSA operations in Node.js without requiring external command-line tools.
Node.js developers building applications that require RSA cryptography, such as secure communication systems, digital signature implementations, certificate management, or SSH key handling.
Developers choose URSA for its comprehensive and native OpenSSL integration, offering a complete set of RSA operations with support for modern padding schemes and SSH key formats, all within a familiar Node.js API that balances convenience and performance.
URSA - RSA public/private key OpenSSL bindings for Node.js
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Provides direct wrappers for OpenSSL's RSA functions, including configurable padding modes like PKCS1_OAEP_PADDING and PKCS1_PADDING, ensuring performance and compatibility with standard cryptographic operations.
Includes methods to convert keys to SSH format, generate SSH fingerprints, and parse OpenSSH public keys, making it useful for DevOps and key management tasks.
Balances efficiency with convenience by allowing operations with Buffers for performance or strings for ease, as highlighted in the library's philosophy section.
Offers key coercion, validation helpers, and component-based key creation, simplifying the manipulation and assurance of RSA keys in various formats.
Requires manual installation of OpenSSL in specific directories and node-gyp with Python and Visual Studio, leading to potential compilation and dependency issues, as detailed in the Windows installation notes.
The README notes multiple ownership transfers and reliance on pull requests for maintenance, which may indicate less active development or stability concerns for long-term projects.
Focuses exclusively on RSA cryptography, lacking support for modern alternatives like elliptic curve cryptography (ECC) or symmetric algorithms, which limits its applicability in broader cryptographic contexts.