跳转至

Insecure Random Seed

不安全的随机种子

描述

随机数生成器使用常量值进行种子播种，导致生成的数字是可预测的。

建议

为确保生成的随机值不可预测，请使用安全的伪随机数生成器 (PRNG)，例如 Java 的 SecureRandom 和 Swift 的 SecRandomCopyBytes。

import java.security.SecureRandom;

public class SecureRandomExample {
    public static void main(String[] args) {
        SecureRandom secureRandom = new SecureRandom();

        // Generating a random integer
        int randomNumber = secureRandom.nextInt();
        System.out.println("Random Integer: " + randomNumber);

        // Generating a random double
        double randomDouble = secureRandom.nextDouble();
        System.out.println("Random Double: " + randomDouble);

        // Generating a random byte array
        byte[] randomBytes = new byte[10];
        secureRandom.nextBytes(randomBytes);
        System.out.println("Random Bytes: " + java.util.Arrays.toString(randomBytes));
    }
}

import Security

func generateRandomBytes(count: Int) -> [UInt8]? {
    var randomBytes = [UInt8](repeating: 0, count: count)
    let status = SecRandomCopyBytes(kSecRandomDefault, count, &randomBytes)

    guard status == errSecSuccess else {
        print("Error generating random bytes: \(status)")
        return nil
    }

    return randomBytes
}

if let randomBytes = generateRandomBytes(count: 10) {
    print("Random Bytes: \(randomBytes)")
}

链接

标准

  • OWASP_MASVS_L1:
    • MSTG_CRYPTO_6
  • OWASP_MASVS_L2:
    • MSTG_CRYPTO_6
  • PCI_STANDARDS:
    • REQ_2_2
    • REQ_6_2
  • OWASP_MASVS_v2_1:
    • MASVS_CRYPTO_1
  • SOC2_CONTROLS:
    • CC_2_1
    • CC_4_1
    • CC_6_7
    • CC_7_1
    • CC_7_2
    • CC_7_4
    • CC_7_5
  • CNIL_FOR_DEVELOPERS:
    • DEVELOPERS_4_1_4
  • HIPAA_CONTROLS:
    • SECURITY251
    • SECURITY212
    • SECURITY213