Example usage for com.amazonaws.services.kms AWSKMSClient decrypt

List of usage examples for com.amazonaws.services.kms AWSKMSClient decrypt

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Introduction

In this page you can find the example usage for com.amazonaws.services.kms AWSKMSClient decrypt.

Prototype

@Override
public DecryptResult decrypt(DecryptRequest request)

Source Link

Document

Decrypts ciphertext that was encrypted by a AWS KMS customer master key (CMK) using any of the following operations:

You can use this operation to decrypt ciphertext that was encrypted under a symmetric or asymmetric CMK.

Usage

From source file:com.choicemaker.xmlencryption.AwsKmsUtils.java

License:Open Source License

public static ByteBuffer computeSecretBytes(AWSCredentials creds, String masterKeyId, String algorithm,
        String encValueSecretKey, String endpoint) throws Base64DecodingException {
    Precondition.assertNonNullArgument("null credentials", creds);
    Precondition.assertNonEmptyString("null or blank master key id", masterKeyId);
    Precondition.assertNonEmptyString("null or blank encrypted value", encValueSecretKey);
    if (!StringUtils.nonEmptyString(algorithm)) {
        algorithm = DefaultAlgorithms.DEFAULT_AWS_KEY_ENCRYPTION_ALGORITHM;
    }//w ww  . ja va 2 s . c o m

    AWSKMSClient kms = new AWSKMSClient(creds);
    if (endpoint != null) {
        kms.setEndpoint(endpoint);
    }

    byte[] encBase64 = encValueSecretKey.getBytes();
    byte[] encBytes = Base64.decode(encBase64);
    ByteBuffer encryptedKey = ByteBuffer.wrap(encBytes);
    DecryptRequest request = new DecryptRequest().withCiphertextBlob(encryptedKey);
    DecryptResult result = kms.decrypt(request);
    ByteBuffer retVal = result.getPlaintext();

    return retVal;
}

From source file:org.apache.coheigea.cxf.kms.asymmetric.KMSPasswordEncryptor.java

License:Apache License

@Override
public String decrypt(String encryptedPassword) {

    final AWSCredentials creds = new BasicAWSCredentials(accessKey, secretKey);

    AWSKMSClient kms = new AWSKMSClient(creds);
    kms.setEndpoint(endpoint);//from   w  w  w . ja v a  2s.  c  o m

    try {
        byte[] encryptedBytes = Base64.decode(encryptedPassword);
        ByteBuffer encryptedKey = ByteBuffer.wrap(encryptedBytes);

        DecryptRequest req = new DecryptRequest().withCiphertextBlob(encryptedKey);
        ByteBuffer plaintextKey = kms.decrypt(req).getPlaintext();

        byte[] key = new byte[plaintextKey.remaining()];
        plaintextKey.get(key);

        return new String(key);
    } catch (Base64DecodingException ex) {
        return null;
    }
}

From source file:org.apache.coheigea.cxf.kms.common.CommonCallbackHandler.java

License:Apache License

public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
    for (int i = 0; i < callbacks.length; i++) {
        if (callbacks[i] instanceof WSPasswordCallback) {
            WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
            if (pc.getUsage() == WSPasswordCallback.SECRET_KEY) {
                final AWSCredentials creds = new BasicAWSCredentials(accessKey, secretKey);

                AWSKMSClient kms = new AWSKMSClient(creds);
                kms.setEndpoint(endpoint);

                if (pc.getEncryptedSecret() != null) {
                    ByteBuffer encryptedKey = ByteBuffer.wrap(pc.getEncryptedSecret());

                    DecryptRequest req = new DecryptRequest().withCiphertextBlob(encryptedKey);
                    ByteBuffer plaintextKey = kms.decrypt(req).getPlaintext();

                    byte[] key = new byte[plaintextKey.remaining()];
                    plaintextKey.get(key);
                    pc.setKey(key);/*  w w w . ja  v a 2  s  .  com*/
                } else {

                    GenerateDataKeyRequest dataKeyRequest = new GenerateDataKeyRequest();
                    dataKeyRequest.setKeyId(masterKeyId);
                    String algorithm = "AES_128";
                    if (pc.getAlgorithm() != null && pc.getAlgorithm().contains("aes256")) {
                        algorithm = "AES_256";
                    }
                    dataKeyRequest.setKeySpec(algorithm);

                    GenerateDataKeyResult dataKeyResult = kms.generateDataKey(dataKeyRequest);

                    ByteBuffer plaintextKey = dataKeyResult.getPlaintext();
                    byte[] key = new byte[plaintextKey.remaining()];
                    plaintextKey.get(key);
                    pc.setKey(key);

                    ByteBuffer encryptedKey = dataKeyResult.getCiphertextBlob();
                    byte[] encKey = new byte[encryptedKey.remaining()];
                    encryptedKey.get(encKey);
                    pc.setEncryptedSecret(encKey);

                    // Create a KeyName pointing to the encryption key
                    Document doc = DOMUtils.newDocument();
                    Element keyInfoElement = doc.createElementNS(WSConstants.SIG_NS,
                            WSConstants.SIG_PREFIX + ":" + WSConstants.KEYINFO_LN);
                    keyInfoElement.setAttributeNS(WSConstants.XMLNS_NS, "xmlns:" + WSConstants.SIG_PREFIX,
                            WSConstants.SIG_NS);
                    Element keyNameElement = doc.createElementNS(WSConstants.SIG_NS,
                            WSConstants.SIG_PREFIX + ":KeyName");
                    keyNameElement.setTextContent("1c84a3f2-51cc-4c66-9045-68f51ef8b1eb");
                    keyInfoElement.appendChild(keyNameElement);
                    pc.setKeyInfoReference(keyInfoElement);
                }
            }
        }
    }
}

From source file:org.finra.dm.dao.impl.KmsOperationsImpl.java

License:Apache License

/**
 * {@inheritDoc}//from   www.j  a  v a  2 s  .c  o m
 */
@Override
public DecryptResult decrypt(AWSKMSClient awsKmsClient, DecryptRequest decryptRequest) {
    // Call AWS KMS decrypt service method.
    return awsKmsClient.decrypt(decryptRequest);
}

From source file:org.finra.herd.dao.impl.KmsOperationsImpl.java

License:Apache License

@Override
public DecryptResult decrypt(AWSKMSClient awsKmsClient, DecryptRequest decryptRequest) {
    // Call AWS KMS decrypt service method.
    return awsKmsClient.decrypt(decryptRequest);
}