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ID: java-security/random-iv
Language: Java
Severity: Warning
Category: Security
The initialization vector (IV) for a cryptographic operation must be random and not statically declared. Instead of using a static initialization vector, use the SecureRandom
class that will initialize your vector with real random values.
public class Foo {
void bad() {
byte[] iv = new byte[] { 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, };
}
void alsoBad() {
byte[] iv = "secret iv in here".getBytes();
}
}
public class Foo {
void good() {
SecureRandom random = new SecureRandom();
byte iv[] = new byte[16];
random.nextBytes(bytes);
}
}
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