Package net.snowflake.ingest.utils

Class Cryptor

java.lang.Object

net.snowflake.ingest.utils.Cryptor

public class Cryptor
extends Object

Constructor Summary

Constructors

Constructor	Description
Cryptor()

Method Summary

Modifier and Type	Method	Description
static byte[]	decrypt(byte[] input, String encryptionKey, String diversifier, long iv)	Decrypts input bytes using AES CTR mode with zero initialization vector,this is used in testing only
static byte[]	encrypt(byte[] compressedChunkData, String encryptionKey, String diversifier, long iv)	Encrypts input bytes using AES CTR mode with zero initialization vector.
static byte[]	sha256Hash(byte[] input)	Hashes input bytes using SHA-256.
static byte[]	sha256Hash(byte[] input, int offset, int len)	Hashes input bytes using SHA-256.
static String	sha256HashBase64(byte[] input)	Hashes input bytes using SHA-256 and converts hash into a string using Base64 encoding.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Cryptor

public Cryptor()

Method Detail

sha256Hash

public static byte[] sha256Hash(byte[] input,
                                int offset,
                                int len)

Hashes input bytes using SHA-256.

Parameters:

input - input bytes

offset - offset into the output buffer to begin storing the digest

len - number of bytes within buf allotted for the digest

Returns:

SHA-256 hash

sha256Hash

public static byte[] sha256Hash(byte[] input)

Hashes input bytes using SHA-256.

Parameters:

input - input bytes

Returns:

SHA-256 hash

sha256HashBase64

public static String sha256HashBase64(byte[] input)

Hashes input bytes using SHA-256 and converts hash into a string using Base64 encoding.

Parameters:

input - input bytes

Returns:

Base64-encoded SHA-256 hash

encrypt

public static byte[] encrypt(byte[] compressedChunkData,
                             String encryptionKey,
                             String diversifier,
                             long iv)
                      throws NoSuchPaddingException,
                             NoSuchAlgorithmException,
                             InvalidAlgorithmParameterException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

Encrypts input bytes using AES CTR mode with zero initialization vector.

Parameters:

compressedChunkData - bytes to encrypt

encryptionKey - symmetric encryption key

diversifier - diversifier for the encryption key

iv - IV to use for encryption

Returns:

encrypted bytes, padded, prefixed with initialization vector

Throws:

NoSuchPaddingException

NoSuchAlgorithmException

InvalidAlgorithmParameterException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException

decrypt

public static byte[] decrypt(byte[] input,
                             String encryptionKey,
                             String diversifier,
                             long iv)
                      throws NoSuchPaddingException,
                             NoSuchAlgorithmException,
                             InvalidAlgorithmParameterException,
                             InvalidKeyException,
                             IllegalBlockSizeException,
                             BadPaddingException

Decrypts input bytes using AES CTR mode with zero initialization vector,this is used in testing only

Parameters:

input - bytes to encrypt

encryptionKey - symmetric encryption key

diversifier - diversifier for the decryption key

iv - IV to use for decryption

Returns:

decrypted ciphertext

Throws:

NoSuchPaddingException

NoSuchAlgorithmException

InvalidAlgorithmParameterException

InvalidKeyException

IllegalBlockSizeException

BadPaddingException