Generate random AES-128, AES-256, and RSA key pairs using the Web Crypto API for development and testing.
Select AES-128, AES-256, or RSA to generate new cryptographic key material with the browser's Web Crypto API. AES generation produces one symmetric key, while RSA generation produces a mathematically linked public and private key pair. Generation happens locally in the browser, and this tool does not upload the keys. The important distinction is that these results are random, not derived from a password or other repeatable input. Running the same option twice should therefore produce different key material.
The AES-128 option creates a 128-bit symmetric key, and AES-256 creates a 256-bit symmetric key. One secret key is used on both sides of an AES operation. The tool requests fresh key material from Web Crypto each time; it does not turn entered text into a key. AES key generation alone does not supply an encryption mode, initialization vector, nonce, or authentication tag.
The RSA option creates two related components rather than a single shared secret. The public key can be given to a party that needs its public role, while the private key must remain confidential. The exact operation permitted by an RSA key depends on its algorithm parameters. A key intended for encryption is not automatically suitable for signatures, even though both may be described as RSA keys.
No. AES-128, AES-256, and RSA selections describe the kind of key to generate, not a seed or recipe for reproducing one. A later generation creates different key material. If a test must be repeatable, preserve the original generated key in a suitable test-secret location and import that saved value for subsequent runs.
Not automatically. Web Crypto is designed for cryptographic operations, but production suitability also depends on the page environment, algorithm parameters, key representation, access controls, storage, rotation, backup, and exposure through the clipboard or browser extensions. This generator is described for development and testing. Use an approved production key-management process when your system or organization requires one.
The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Generate strong, random passwords with customizable length, character sets, and complexity requirements.
Analyze password strength with entropy scoring, crack-time estimates, and improvement suggestions.
Create cryptographically random strings for API keys, tokens, salts, and unique identifiers.
Create QR codes for URLs, text, Wi-Fi credentials, vCards, and more with customizable size and colors.
Scan and decode QR codes from uploaded images or your device camera to extract embedded data.
Compute MD5, SHA-1, SHA-256, and SHA-512 checksums to verify file integrity and detect tampering.