| Name | Description | Type | Package | Framework |
| AllTests | Class | org.bouncycastle.util | BouncyCastle | |
| Arrays | General array utilities. | Class | org.bouncycastle.util | BouncyCastle |
| Base64 | Class | org.bouncycastle.util.encoders | BouncyCastle | |
| Base64Encoder | Class | org.bouncycastle.util.encoders | BouncyCastle | |
| BigIntegers | BigInteger utilities. | Class | org.bouncycastle.util | BouncyCastle |
| BufferedDecoder | a buffering class to allow translation from one format to another to be done in discrete chunks. | Class | org.bouncycastle.util.encoders | BouncyCastle |
| BufferedEncoder | a buffering class to allow translation from one format to another to be done in discrete chunks. | Class | org.bouncycastle.util.encoders | BouncyCastle |
| CollectionStore | A simple collection backed store. | Class | org.bouncycastle.util | BouncyCastle |
| Encoder | Interface | org.bouncycastle.util.encoders | BouncyCastle | |
| FixedSecureRandom | Class | org.bouncycastle.util.test | BouncyCastle | |
| Hex | Class | org.bouncycastle.util.encoders | BouncyCastle | |
| HexEncoder | Class | org.bouncycastle.util.encoders | BouncyCastle | |
| HexTranslator | Converters for going from hex to binary and back. | Class | org.bouncycastle.util.encoders | BouncyCastle |
| IPAddress | Class | org.bouncycastle.util | BouncyCastle | |
| IPTest | Class | org.bouncycastle.util | BouncyCastle | |
| NumberParsing | Class | org.bouncycastle.util.test | BouncyCastle | |
| Selector | Interface | org.bouncycastle.util | BouncyCastle | |
| SimpleTest | Class | org.bouncycastle.util.test | BouncyCastle | |
| SimpleTestResult | Class | org.bouncycastle.util.test | BouncyCastle | |
| Store | Interface | org.bouncycastle.util | BouncyCastle | |
| StoreException | Class | org.bouncycastle.util | BouncyCastle | |
| StreamParser | Interface | org.bouncycastle.util | BouncyCastle | |
| StreamParsingException | Class | org.bouncycastle.util | BouncyCastle | |
| Strings | Class | org.bouncycastle.util | BouncyCastle | |
| Test | Interface | org.bouncycastle.util.test | BouncyCastle | |
| TestFailedException | Class | org.bouncycastle.util.test | BouncyCastle | |
| TestResult | Interface | org.bouncycastle.util.test | BouncyCastle | |
| Translator | general interface for an translator. | Interface | org.bouncycastle.util.encoders | BouncyCastle |
| UncloseableOutputStream | Fields inherited from class java. | Class | org.bouncycastle.util.test | BouncyCastle |
| UrlBase64 | Convert binary data to and from UrlBase64 encoding. | Class | org.bouncycastle.util.encoders | BouncyCastle |
| UrlBase64Encoder | Convert binary data to and from UrlBase64 encoding. | Class | org.bouncycastle.util.encoders | BouncyCastle |