BlockCipher.Decryptor (Apache Parquet Format Structures 1.12.2 API)

Enclosing interface:: BlockCipher

public static interface BlockCipher.Decryptor

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`byte[]`	`decrypt(byte[] lengthAndCiphertext, byte[] AAD)`	Decrypts the ciphertext.
`byte[]`	`decrypt(InputStream from, byte[] AAD)`	Convenience decryption method that reads the length and ciphertext from the input stream.

- Method Detail
  - decrypt
```
byte[] decrypt(byte[] lengthAndCiphertext,
               byte[] AAD)
```
    Decrypts the ciphertext.
    
    Parameters:
    
    lengthAndCiphertext - - The first 4 bytes of the input are the ciphertext length (little endian int). The ciphertext starts at offset 4 and fills up the rest of the input byte array. The ciphertext includes the nonce and (in case of GCM cipher) the tag, as detailed in the Parquet Modular Encryption specification.
    
    AAD - - Additional Authenticated Data for the decryption (ignored in case of CTR cipher)
    
    Returns:
    
    plaintext - starts at offset 0 of the output value, and fills up the entire byte array.
  - decrypt
```
byte[] decrypt(InputStream from,
               byte[] AAD)
        throws IOException
```
    Convenience decryption method that reads the length and ciphertext from the input stream.
    
    Parameters:
    
    from - Input stream with length and ciphertext.
    
    AAD - - Additional Authenticated Data for the decryption (ignored in case of CTR cipher)
    
    Returns:
    
    plaintext - starts at offset 0 of the output, and fills up the entire byte array.
    
    Throws:
    
    IOException - - Stream I/O problems