/
KeyMetadata.java
103 lines (88 loc) · 3.47 KB
/
KeyMetadata.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.iceberg.encryption;
import static org.apache.iceberg.types.Types.NestedField.optional;
import static org.apache.iceberg.types.Types.NestedField.required;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.apache.avro.message.MessageDecoder;
import org.apache.avro.message.MessageEncoder;
import org.apache.iceberg.Schema;
import org.apache.iceberg.data.GenericRecord;
import org.apache.iceberg.data.Record;
import org.apache.iceberg.data.avro.IcebergDecoder;
import org.apache.iceberg.data.avro.IcebergEncoder;
import org.apache.iceberg.types.Types;
public class KeyMetadata implements EncryptionKeyMetadata {
private static final int encryptionKeyPos = 0;
private static final int wrappingKeyIdPos = 1;
private static final int aadPrefixPos = 2;
private static final Schema SCHEMA_V1 =
new Schema(
required(encryptionKeyPos, "encryptionKey", Types.BinaryType.get()),
optional(wrappingKeyIdPos, "wrappingKeyId", Types.StringType.get()),
optional(aadPrefixPos, "aadPrefix", Types.BinaryType.get()));
private final String wrappingKeyId;
private final ByteBuffer encryptionKey;
private final ByteBuffer aadPrefix;
public KeyMetadata(ByteBuffer encryptionKey, String wrappingKeyId, ByteBuffer aadPrefix) {
this.wrappingKeyId = wrappingKeyId;
this.encryptionKey = encryptionKey;
this.aadPrefix = aadPrefix;
}
public String wrappingKeyId() {
return wrappingKeyId;
}
public ByteBuffer encryptionKey() {
return encryptionKey;
}
public ByteBuffer aadPrefix() {
return aadPrefix;
}
@Override
public ByteBuffer buffer() {
Record rec = GenericRecord.create(SCHEMA_V1.asStruct());
rec.set(encryptionKeyPos, encryptionKey);
rec.set(wrappingKeyIdPos, wrappingKeyId);
rec.set(aadPrefixPos, aadPrefix);
MessageEncoder<Record> encoder = new IcebergEncoder<>(SCHEMA_V1);
try {
return encoder.encode(rec);
} catch (IOException e) {
throw new RuntimeException("Failed to serialize envelope key metadata", e);
}
}
@Override
public EncryptionKeyMetadata copy() {
KeyMetadata metadata = new KeyMetadata(encryptionKey(), wrappingKeyId(), aadPrefix());
return metadata;
}
public static KeyMetadata parse(ByteBuffer buffer) {
MessageDecoder<Record> decoder = new IcebergDecoder<>(SCHEMA_V1);
try {
Record rec = decoder.decode(buffer);
return new KeyMetadata(
rec.get(encryptionKeyPos, ByteBuffer.class),
rec.get(wrappingKeyIdPos, String.class),
rec.get(aadPrefixPos, ByteBuffer.class));
} catch (IOException e) {
throw new RuntimeException("Failed to parse envelope encryption metadata", e);
}
}
}