Examples with AsymmetricDecryptRequest com.google.cloud.kms.v1.AsymmetricDecryptRequest used on opensource projects

Example 1 with AsymmetricDecryptRequest

use of com.google.cloud.kms.v1.AsymmetricDecryptRequest in project gapic-generator-java by googleapis.

the class AsyncAsymmetricDecrypt method asyncAsymmetricDecrypt.

public static void asyncAsymmetricDecrypt() throws Exception {
    // It may require modifications to work in your environment.
    try (KeyManagementServiceClient keyManagementServiceClient = KeyManagementServiceClient.create()) {
        AsymmetricDecryptRequest request = AsymmetricDecryptRequest.newBuilder().setName(CryptoKeyVersionName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]", "[CRYPTO_KEY_VERSION]").toString()).setCiphertext(ByteString.EMPTY).setCiphertextCrc32C(Int64Value.newBuilder().build()).build();
        ApiFuture<AsymmetricDecryptResponse> future = keyManagementServiceClient.asymmetricDecryptCallable().futureCall(request);
        // Do something.
        AsymmetricDecryptResponse response = future.get();
    }
}

Example 2 with AsymmetricDecryptRequest

use of com.google.cloud.kms.v1.AsymmetricDecryptRequest in project gapic-generator-java by googleapis.

the class SyncAsymmetricDecrypt method syncAsymmetricDecrypt.

public static void syncAsymmetricDecrypt() throws Exception {
    // It may require modifications to work in your environment.
    try (KeyManagementServiceClient keyManagementServiceClient = KeyManagementServiceClient.create()) {
        AsymmetricDecryptRequest request = AsymmetricDecryptRequest.newBuilder().setName(CryptoKeyVersionName.of("[PROJECT]", "[LOCATION]", "[KEY_RING]", "[CRYPTO_KEY]", "[CRYPTO_KEY_VERSION]").toString()).setCiphertext(ByteString.EMPTY).setCiphertextCrc32C(Int64Value.newBuilder().build()).build();
        AsymmetricDecryptResponse response = keyManagementServiceClient.asymmetricDecrypt(request);
    }
}

Example 3 with AsymmetricDecryptRequest

use of com.google.cloud.kms.v1.AsymmetricDecryptRequest in project java-docs-samples by GoogleCloudPlatform.

the class DecryptAsymmetric method decryptAsymmetric.

// Decrypt data that was encrypted using the public key component of the given
// key version.
public void decryptAsymmetric(String projectId, String locationId, String keyRingId, String keyId, String keyVersionId, byte[] ciphertext) throws IOException {
    // safely clean up any remaining background resources.
    try (KeyManagementServiceClient client = KeyManagementServiceClient.create()) {
        // Build the key version name from the project, location, key ring, key,
        // and key version.
        CryptoKeyVersionName keyVersionName = CryptoKeyVersionName.of(projectId, locationId, keyRingId, keyId, keyVersionId);
        // Optional, but recommended: compute ciphertext's CRC32C. See helpers below.
        long ciphertextCrc32c = getCrc32cAsLong(ciphertext);
        // Decrypt the ciphertext.
        AsymmetricDecryptRequest request = AsymmetricDecryptRequest.newBuilder().setName(keyVersionName.toString()).setCiphertext(ByteString.copyFrom(ciphertext)).setCiphertextCrc32C(Int64Value.newBuilder().setValue(ciphertextCrc32c).build()).build();
        AsymmetricDecryptResponse response = client.asymmetricDecrypt(request);
        // https://cloud.google.com/kms/docs/data-integrity-guidelines
        if (!response.getVerifiedCiphertextCrc32C()) {
            throw new IOException("AsymmetricDecrypt: request to server corrupted");
        }
        if (!crcMatches(response.getPlaintextCrc32C().getValue(), response.getPlaintext().toByteArray())) {
            throw new IOException("AsymmetricDecrypt: response from server corrupted");
        }
        System.out.printf("Plaintext: %s%n", response.getPlaintext().toStringUtf8());
    }
}