Question 1

How do I encrypt a message with Cryptico in a web app?

Accepted Answer

First, generate the recipient's public key string using cryptico.publicKeyString() from their RSA key. Then, call cryptico.encrypt(plaintext, publicKeyString) to get the encrypted ciphertext, as shown in the README example for Sam and Matt.

Question 2

Is Cryptico secure enough for production use?

Accepted Answer

Cryptico uses well-established RSA and AES algorithms, making it robust for many use cases. However, its reliance on MD5 for key IDs and third-party libraries means you should audit dependencies and consider it for low to medium-risk applications, not high-security environments.

Question 3

Cryptico vs Web Crypto API: which should I choose?

Accepted Answer

Choose Cryptico for its simple, high-level API and built-in signing features if you prioritize ease of use. Opt for the Web Crypto API if you need native browser performance, standards compliance, and a wider range of modern cryptographic algorithms.

Question 4

What happens if a signature verification fails in Cryptico?

Accepted Answer

When decrypting a signed message, if the signature is invalid, the result's signature field will be 'forged', indicating a potential tampering or authentication issue, but the plaintext is still decrypted, allowing for further inspection.

Question 5

How to generate RSA keys from a passphrase with Cryptico?

Accepted Answer

Use cryptico.generateRSAKey(passphrase, bitlength) with a passphrase string and bitlength (e.g., 1024) to create a repeatable RSA key object, as detailed in the API documentation for key generation.

Question 6

Does Cryptico work in Node.js or only in browsers?

Accepted Answer

Cryptico is written in JavaScript and should work in Node.js, but you may need to ensure compatibility with its dependencies, which were originally designed for browser environments, potentially requiring polyfills or adjustments.

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