import (
	"bytes"
	"crypto/tls"
	"crypto/x509"
	"encoding/pem"
	"errors"
	"os"

	"github.com/minio/pkg/v3/env"
)

// EnvCertPassword is the environment variable which contains the password used
// to decrypt the TLS private key. It must be set if the TLS private key is
// password protected.
const EnvCertPassword = "MINIO_CERT_PASSWD"

// ParsePublicCertFile - parses public cert into its *x509.Certificate equivalent.

		return key, err
	}
	unsealKey, err := k.Decrypt(context.TODO(), &kms.DecryptRequest{
		Name:           keyID,
		Ciphertext:     kmsKey,
		AssociatedData: kms.Context{bucket: path.Join(bucket, object)},
	})
	if err != nil {
		return key, err
	}
	err = key.Unseal(unsealKey, sealedKey, s3.String(), bucket, object)
	return key, err
}

// UnsealObjectsKeys extracts and decrypts all sealed object keys

	// The same context must be provided when the generated key
	// should be decrypted. Therefore, it is the callers
	// responsibility to remember the corresponding context for
	// a particular DEK. The context may be nil.
	GenerateKey(context.Context, *GenerateKeyRequest) (DEK, error)

	// DecryptKey decrypts the ciphertext with the key referenced
	// by the key ID. The context must match the context value

	case strings.Contains(inputFileName, ".enc."):
		outputFileName = strings.Replace(inputFileName, ".enc.", ".", 1) + ".zip"
	default:
		outputFileName = inputFileName + ".decrypted"
	}

	// Open the input and create the output file
	input, err := os.Open(inputFileName)
	fatalErr(err)
	defer input.Close()

	// Decrypt the inspect data
	switch {

		if rs != nil {
			off, length, err = rs.GetOffsetLength(actualSize)
			if err != nil {
				return nil, 0, 0, err
			}
			decrypt := func(b []byte) ([]byte, error) {
				return b, nil
			}
			if isEncrypted {
				decrypt = func(b []byte) ([]byte, error) {
					return oi.compressionIndexDecrypt(b, h)
				}
			}

```

This file can be decrypted using the decryption tool below:

### Installing decryption tool

To install, [Go](https://golang.org/dl/) must be installed.

Once installed, execute this to install the binary:

```bash
go install github.com/minio/minio/docs/debugging/inspect@latest
```

### Usage

To decrypt the file above:

```

                            String data = line.substring(pos + 1).trim();
                            if (properyPattern.matcher(key).matches() && data.startsWith(CIPHER_PREFIX)) {
                                data = cipher.decrypt(data.substring(CIPHER_PREFIX.length()));
                            }
                            paramMap.put(key, data);
                        } else {
                            paramMap.put(key, StringUtil.EMPTY);

        for (int i = 0; i < length; i++) {
            dest[destPos + i] = src[srcPos + i];
        }
    }

    /**
     * Decrypt an SMB2 message
     *
     * @param encryptedMessage
     *            encrypted message with transform header
     * @return decrypted plaintext message
     * @throws CIFSException
     *             if decryption fails
     */

func (ssekms) IsEncrypted(metadata map[string]string) bool {
	if _, ok := metadata[MetaSealedKeyKMS]; ok {
		return true
	}
	return false
}

// UnsealObjectKey extracts and decrypts the sealed object key
// from the metadata using KMS and returns the decrypted object
// key.
func (s3 ssekms) UnsealObjectKey(k *kms.KMS, metadata map[string]string, bucket, object string) (key ObjectKey, err error) {
	if k == nil {

		if err != nil {
			t.Errorf("Test %d: failed to decode etag: %s", i, err)
		}
		sealedETag := key.SealETag(tag)
		unsealedETag, err := key.UnsealETag(sealedETag)
		if err != nil {
			t.Errorf("Test %d: failed to decrypt etag: %s", i, err)
		}
		if !bytes.Equal(unsealedETag, tag) {
			t.Errorf("Test %d: unsealed etag does not match: got %s - want %s", i, hex.EncodeToString(unsealedETag), etag)
		}
	}