Examples with AesCtrHmacStreamingParams com.google.crypto.tink.proto.AesCtrHmacStreamingParams used on opensource projects

Example 1 with AesCtrHmacStreamingParams

use of com.google.crypto.tink.proto.AesCtrHmacStreamingParams in project tink by google.

the class AesCtrHmacStreamingKeyManagerTest method testNewKeyWithBadFormat.

@Test
public void testNewKeyWithBadFormat() throws Exception {
    // key_size too small.
    AesCtrHmacStreamingKeyFormat keyFormat = AesCtrHmacStreamingKeyFormat.newBuilder().setParams(keyParams).setKeySize(15).build();
    testNewKeyWithBadFormat(keyFormat);
    // Unknown HKDF HashType.
    AesCtrHmacStreamingParams badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(128).setDerivedKeySize(AES_KEY_SIZE).build();
    testNewKeyWithBadFormat(badKeyParams);
    // derived_key_size too small.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(128).setDerivedKeySize(10).setHkdfHashType(HashType.SHA256).build();
    testNewKeyWithBadFormat(badKeyParams);
    // ciphertext_segment_size too small.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(15).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).build();
    testNewKeyWithBadFormat(badKeyParams);
    // No HmacParams.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(130).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).build();
    testNewKeyWithBadFormat(badKeyParams);
    // Unknown HmacParams.hash.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(130).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).setHmacParams(HmacParams.newBuilder().build()).build();
    testNewKeyWithBadFormat(badKeyParams);
    // tag size too small.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(130).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).setHmacParams(HmacParams.newBuilder().setHash(HashType.SHA256).setTagSize(9).build()).build();
    testNewKeyWithBadFormat(badKeyParams);
    // tag size too big.
    badKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(130).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).setHmacParams(HmacParams.newBuilder().setHash(HashType.SHA256).setTagSize(33).build()).build();
    testNewKeyWithBadFormat(badKeyParams);
    // All params good.
    AesCtrHmacStreamingParams goodKeyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(130).setDerivedKeySize(AES_KEY_SIZE).setHkdfHashType(HashType.SHA256).setHmacParams(hmacParams).build();
    keyFormat = AesCtrHmacStreamingKeyFormat.newBuilder().setParams(goodKeyParams).setKeySize(16).build();
    ByteString serializedKeyFormat = ByteString.copyFrom(keyFormat.toByteArray());
    AesCtrHmacStreamingKey unusedKey = (AesCtrHmacStreamingKey) keyManager.newKey(keyFormat);
    unusedKey = (AesCtrHmacStreamingKey) keyManager.newKey(serializedKeyFormat);
}

Example 2 with AesCtrHmacStreamingParams

use of com.google.crypto.tink.proto.AesCtrHmacStreamingParams in project tink by google.

the class TestUtil method createAesCtrHmacStreamingKeyData.

/**
 * @return a {@code KeyData} containing a {@code AesCtrHmacStreamingKey}.
 */
public static KeyData createAesCtrHmacStreamingKeyData(byte[] keyValue, int derivedKeySize, int ciphertextSegmentSize) throws Exception {
    HmacParams hmacParams = HmacParams.newBuilder().setHash(HashType.SHA256).setTagSize(16).build();
    AesCtrHmacStreamingParams keyParams = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(ciphertextSegmentSize).setDerivedKeySize(derivedKeySize).setHkdfHashType(HashType.SHA256).setHmacParams(hmacParams).build();
    AesCtrHmacStreamingKey keyProto = AesCtrHmacStreamingKey.newBuilder().setVersion(0).setKeyValue(ByteString.copyFrom(keyValue)).setParams(keyParams).build();
    return createKeyData(keyProto, StreamingAeadConfig.AES_CTR_HMAC_STREAMINGAEAD_TYPE_URL, KeyData.KeyMaterialType.SYMMETRIC);
}

Example 3 with AesCtrHmacStreamingParams

use of com.google.crypto.tink.proto.AesCtrHmacStreamingParams in project tink by google.

the class StreamingAeadKeyTemplates method createAesCtrHmacStreamingKeyTemplate.

/**
 * @return a {@link KeyTemplate} containing a {@link AesCtrHmacStreamingKeyFormat} with some
 *     specified parameters.
 */
public static KeyTemplate createAesCtrHmacStreamingKeyTemplate(int mainKeySize, HashType hkdfHashType, int derivedKeySize, HashType macHashType, int tagSize, int ciphertextSegmentSize) {
    HmacParams hmacParams = HmacParams.newBuilder().setHash(macHashType).setTagSize(tagSize).build();
    AesCtrHmacStreamingParams params = AesCtrHmacStreamingParams.newBuilder().setCiphertextSegmentSize(ciphertextSegmentSize).setDerivedKeySize(derivedKeySize).setHkdfHashType(hkdfHashType).setHmacParams(hmacParams).build();
    AesCtrHmacStreamingKeyFormat format = AesCtrHmacStreamingKeyFormat.newBuilder().setParams(params).setKeySize(mainKeySize).build();
    return KeyTemplate.newBuilder().setValue(format.toByteString()).setTypeUrl(AesCtrHmacStreamingKeyManager.TYPE_URL).setOutputPrefixType(OutputPrefixType.RAW).build();
}