"aes128-ctr", "aes192-ctr", "aes256-ctr",
	"aes128-gcm@openssh.com", gcm256CipherID,
	chacha20Poly1305ID,
	"arcfour256", "arcfour128", "arcfour",
	aes128cbcID,
	tripledescbcID,
}

// preferredCiphers specifies the default preference for ciphers.
// https://cs.opensource.google/go/x/crypto/+/refs/tags/v0.22.0:ssh/common.go;l=37
var preferredCiphers = []string{
	"aes128-gcm@openssh.com", gcm256CipherID,
	chacha20Poly1305ID,

		return ErrNotSupported
	}
	return ErrKeyExists
}

// GenerateKey decrypts req.Ciphertext. The key name req.Name must match the key
// name of the secretKey.
//
// The returned DEK is encrypted using AES-GCM and the ciphertext format is compatible
// with KES and MinKMS.
func (s secretKey) GenerateKey(_ context.Context, req *GenerateKeyRequest) (DEK, error) {
	if req.Name != s.keyID {
		return DEK{}, ErrKeyNotFound
	}

 * </ul>
 * <p>
 * <strong>Security Considerations:</strong>
 * </p>
 * <ul>
 * <li>Default Blowfish algorithm is suitable for general-purpose encryption</li>
 * <li>For high-security applications, consider using AES with GCM mode via {@link #setAlgorithm(String)} and {@link #setTransformation(String)}</li>
 * <li>Ensure keys are securely generated and stored</li>

- [PRF](#prf): HMAC-SHA-256
- [AEAD](#aead): AES-256-GCM if the CPU supports AES-NI, ChaCha20-Poly1305 otherwise. More specifically AES-256-GCM is only selected for X86-64 CPUs with AES-NI extension.

            if (config.isEncryptionEnabled()) {
                // Build cipher list based on AES-256 support
                List<Integer> ciphers = new ArrayList<>();

                // Prefer GCM over CCM for better performance
                if (config.isAES256Enabled()) {
                    ciphers.add(EncryptionNegotiateContext.CIPHER_AES256_GCM);

    }

    @Test
    @DisplayName("Test log encryption")
    void testLogEncryption() {
        logger.logEncryption(true, "AES-128-GCM", "SMB3.1.1");

        Map<EventType, Long> stats = logger.getStatistics();
        assertEquals(Long.valueOf(1), stats.get(EventType.ENCRYPTION_ENABLED), "Should have 1 encryption event");
    }

    @Test

output } golang.org/fips140@v1.0.0-c2097c7c/fips140/v1.0.0-c2097c7c/aes/gcm/gcm.go // Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package gcm import ( "crypto/internal/fips140" "crypto/internal/fips140/aes" "crypto/internal/fips140/alias" "errors" ) // GCM represents a Galois Counter Mode with a specific key. type GCM struct { cipher aes.Block nonceSize int tagSize int gcmPlatformData } func...

K2[:]) return output } golang.org/fips140@v1.1.0-rc1/fips140/v1.1.0-rc1/aes/gcm/gcm.go // Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package gcm import ( "crypto/internal/fips140" "crypto/internal/fips140/aes" "crypto/internal/fips140/alias" "errors" ) // GCM represents a Galois Counter Mode with a specific key. type GCM struct { cipher aes.Block nonceSize int tagSize int gcmPlatformData } func...

```java
public class SecureHandleStorage {
    private final SecretKey encryptionKey;
    
    public void saveEncrypted(HandleInfo handle, Path file) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
        cipher.init(Cipher.ENCRYPT_MODE, encryptionKey);
        
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        try (CipherOutputStream cos = new CipherOutputStream(baos, cipher);

        int cipherId = -1;

        if (dialect.atLeast(DialectVersion.SMB311)) {
            cipherId = resp.getSelectedCipher();
            if (cipherId == -1) {
                // Default to AES-128-GCM for SMB 3.1.1 if no cipher negotiated
                cipherId = EncryptionNegotiateContext.CIPHER_AES128_GCM;
            }
        } else if (dialect.atLeast(DialectVersion.SMB300)) {