result = cipher.doFinal(data);

        decrypt = new byte[result.length];
        System.arraycopy(result, 0, decrypt, 0, result.length);

        int tempSize = decrypt.length - 24;

        byte[] output = new byte[tempSize];
        System.arraycopy(decrypt, 24, output, 0, tempSize);

        decrypt = output;
        return decrypt;
    }

unique, randomly generated secret key per object also known as, Object Encryption Key ([OEK](#oek)). Neither the client-provided SSE-C key nor the KMS-managed key is directly used to en/decrypt an object. Instead, the OEK is stored as part of the object metadata next to the object in an encrypted form. To en/decrypt the OEK another secret key is needed also known as, Key Encryption Key ([KEK](#kek)).

The MinIO server runs a key-derivation algorithm to generate the KEK using a pseudo-random...

        outInts[0] = right;
        outInts[1] = leftt;
    }


    /// Encrypt a block of bytes.
    public void encrypt( byte[] clearText, byte[] cipherText )  {
        encrypt( clearText, 0, cipherText, 0 );
    }

    /// Decrypt a block of bytes.
    public void decrypt( byte[] cipherText, byte[] clearText ) {

        decrypt( cipherText, 0, clearText, 0 );
    }

    /**

	k.updateMetrics(err, time.Since(start))

	return dek, err
}

// Decrypt decrypts a ciphertext using the master key req.Name.
// It returns ErrKeyNotFound if the key does not exist.
func (k *KMS) Decrypt(ctx context.Context, req *DecryptRequest) ([]byte, error) {
	start := time.Now()
	plaintext, err := k.conn.Decrypt(ctx, req)
	k.updateMetrics(err, time.Since(start))

	return plaintext, err
}

}

// Equal returns true if and only if the two ETags are
// identical.
func Equal(a, b ETag) bool { return bytes.Equal(a, b) }

// Decrypt decrypts the ETag with the given key.
//
// If the ETag is not encrypted, Decrypt returns
// the ETag unmodified.
func Decrypt(key []byte, etag ETag) (ETag, error) {
	const HMACContext = "SSE-etag"

	if !etag.IsEncrypted() {
		return etag, nil
	}

            sessionBuilder.setVersionFilter(versionFilter);
        }

        DefaultSettingsDecryptionRequest decrypt = new DefaultSettingsDecryptionRequest();
        decrypt.setProxies(request.getProxies());
        decrypt.setServers(request.getServers());
        SettingsDecryptionResult decrypted = settingsDecrypter.decrypt(decrypt);
        for (SettingsProblem problem : decrypted.getProblems()) {

	if err != nil {
		return encryptedETag
	}
	return hex.EncodeToString(etagBytes)
}

// GetDecryptedRange - To decrypt the range (off, length) of the
// decrypted object stream, we need to read the range (encOff,
// encLength) of the encrypted object stream to decrypt it, and
// compute skipLen, the number of bytes to skip in the beginning of
// the encrypted range.
//

* Nginx
* HAProxy

## Let's Encrypt

Before Let's Encrypt, these **HTTPS certificates** were sold by trusted third parties.

The process to acquire one of these certificates used to be cumbersome, require quite some paperwork and the certificates were quite expensive.

But then **<a href="https://letsencrypt.org/" class="external-link" target="_blank">Let's Encrypt</a>** was created.

	EnvKESServerCA       = "MINIO_KMS_KES_CAPATH"       // Path to file/directory containing CA certificates to verify the KES server certificate
	EnvKESClientPassword = "MINIO_KMS_KES_KEY_PASSWORD" // Optional password to decrypt an encrypt TLS private key
)

// Environment variables for static KMS key.
const (

		Plaintext: must("6d6cdccb9a7498c871bde8eab2f49141"),
	},
}

func TestDecrypt(t *testing.T) {
	for i, test := range decryptTests {
		etag, err := Decrypt(test.Key, test.ETag)
		if err != nil {
			t.Fatalf("Test %d: failed to decrypt ETag: %v", i, err)
		}
		if !Equal(etag, test.Plaintext) {
			t.Fatalf("Test %d: got '%v' - want '%v'", i, etag, test.Plaintext)
		}
	}
}