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Keygen Updated Intellij Review

package com.example.keygen;

// Simple demo main method public static void main(String[] args) throws Exception KeyPair kp = generate(2048); System.out.println("Public key (Base64):"); System.out.println(java.util.Base64.getEncoder() .encodeToString(kp.getPublic().getEncoded())); System.out.println("\nPrivate key (Base64):"); System.out.println(java.util.Base64.getEncoder() .encodeToString(kp.getPrivate().getEncoded()));

// Public key info.set(X509CertInfo.KEY, new CertificateX509Key(keyPair.getPublic())); keygen intellij

dependencies implementation("org.bouncycastle:bcprov-jdk18on:1.78") implementation("org.bouncycastle:bcpkix-jdk18on:1.78")

import java.security.*;

package com.example.keygen;

| Scenario | Algorithm | Typical key sizes | When to use | |----------|-----------|-------------------|-------------| | (asymmetric, encryption & signatures) | RSA | 2048 bits (minimum), 3072 bits, 4096 bits | General‑purpose public‑key encryption or signing | | ECDSA (asymmetric, signatures) | EC (named curves) | secp256r1 (aka P‑256 ), secp384r1 ( P‑384 ) | Smaller keys, same security as RSA‑3072, faster | | AES (symmetric, encryption) | AES | 128, 192, 256 bits | Bulk data encryption, symmetric key exchange | package com

It’s an industry‑standard format ( .p12 / .pfx ) supported by virtually every platform (Java, .NET, OpenSSL, browsers). 3.2 PEM Files (Base64 with headers) Sometimes you need the key in PEM format (e.g., for OpenSSL). Bouncy Castle makes this trivial.

package com.example.keygen;

// Simple demo main method public static void main(String[] args) throws Exception KeyPair kp = generate(2048); System.out.println("Public key (Base64):"); System.out.println(java.util.Base64.getEncoder() .encodeToString(kp.getPublic().getEncoded())); System.out.println("\nPrivate key (Base64):"); System.out.println(java.util.Base64.getEncoder() .encodeToString(kp.getPrivate().getEncoded()));

// Public key info.set(X509CertInfo.KEY, new CertificateX509Key(keyPair.getPublic()));

dependencies implementation("org.bouncycastle:bcprov-jdk18on:1.78") implementation("org.bouncycastle:bcpkix-jdk18on:1.78")

import java.security.*;

package com.example.keygen;

| Scenario | Algorithm | Typical key sizes | When to use | |----------|-----------|-------------------|-------------| | (asymmetric, encryption & signatures) | RSA | 2048 bits (minimum), 3072 bits, 4096 bits | General‑purpose public‑key encryption or signing | | ECDSA (asymmetric, signatures) | EC (named curves) | secp256r1 (aka P‑256 ), secp384r1 ( P‑384 ) | Smaller keys, same security as RSA‑3072, faster | | AES (symmetric, encryption) | AES | 128, 192, 256 bits | Bulk data encryption, symmetric key exchange |

It’s an industry‑standard format ( .p12 / .pfx ) supported by virtually every platform (Java, .NET, OpenSSL, browsers). 3.2 PEM Files (Base64 with headers) Sometimes you need the key in PEM format (e.g., for OpenSSL). Bouncy Castle makes this trivial.