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

Introduction

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

Prototype

DecryptResult decrypt(DecryptRequest decryptRequest);

Source Link

Document

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

• Encrypt

• GenerateDataKey

• GenerateDataKeyPair

• GenerateDataKeyWithoutPlaintext

• GenerateDataKeyPairWithoutPlaintext

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

Usage

From source file:com.nextdoor.bender.utils.Passwords.java

License:Apache License

public static String decrypt(String str, Region region) throws UnsupportedEncodingException {
    if (isJUnitTest()) {
        return str;
    }/*from  www .  j  a  v  a2s .co  m*/

    AWSKMS kms = AWSKMSClientBuilder.standard().withRegion(region.getName()).build();

    /*
     * The KMS ciphertext is base64 encoded and must be decoded before the request is made
     */
    String cipherString = str;
    byte[] cipherBytes = Base64.decode(cipherString);

    /*
     * Create decode request and decode
     */
    ByteBuffer cipherBuffer = ByteBuffer.wrap(cipherBytes);
    DecryptRequest req = new DecryptRequest().withCiphertextBlob(cipherBuffer);
    DecryptResult resp = kms.decrypt(req);

    /*
     * Convert the response plaintext bytes to a string
     */
    return new String(resp.getPlaintext().array(), Charset.forName("UTF-8"));
}

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From source file:de.zalando.spring.cloud.config.aws.kms.MockAwsKmsConfig.java

License:Apache License

@Bean
AWSKMS kms() {// w  w  w. j av  a  2s  . c  om
    final AWSKMS mock = mock(AWSKMS.class);
    when(mock.decrypt(any(DecryptRequest.class))).thenAnswer(new Answer<DecryptResult>() {
        @Override
        public DecryptResult answer(InvocationOnMock invocation) throws Throwable {
            return new DecryptResult().withPlaintext(
                    ByteBuffer.wrap(KmsEncryptionIntegrationConfigurationTest.PLAINTEXT.getBytes()));
        }
    });
    return mock;
}

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