Package io.grpc.alts.internal

Class AesGcmAeadCrypter

  • All Implemented Interfaces:
    AeadCrypter
    final class AesGcmAeadCrypter
extends java.lang.Object
implements AeadCrypter
    AES128-GCM implementation of AeadCrypter that uses default JCE provider.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.lang.String AES  
      private static java.lang.String AES_GCM  
      private javax.crypto.Cipher cipher  
      private static java.security.Provider CONSCRYPT  
      private byte[] key  
      private static int KEY_LENGTH  
      private static java.util.logging.Logger logger  
      (package private) static int NONCE_LENGTH  
      private static int TAG_LENGTH  

    • Constructor Summary

      Constructors 
      Constructor Description
      AesGcmAeadCrypter​(byte[] key)  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void decrypt​(java.nio.ByteBuffer plaintext, java.nio.ByteBuffer ciphertext, byte[] nonce)
      Decrypt ciphertext into plaintext buffer using the given nonce.
      void decrypt​(java.nio.ByteBuffer plaintext, java.nio.ByteBuffer ciphertext, java.nio.ByteBuffer aad, byte[] nonce)
      Decrypt ciphertext into plaintext buffer using the given nonce.
      private void decryptAad​(java.nio.ByteBuffer plaintext, java.nio.ByteBuffer ciphertext, java.nio.ByteBuffer aad, byte[] nonce)  
      void encrypt​(java.nio.ByteBuffer ciphertext, java.nio.ByteBuffer plaintext, byte[] nonce)
      Encrypt plaintext into ciphertext buffer using the given nonce.
      void encrypt​(java.nio.ByteBuffer ciphertext, java.nio.ByteBuffer plaintext, java.nio.ByteBuffer aad, byte[] nonce)
      Encrypt plaintext into ciphertext buffer using the given nonce with authenticated data.
      private int encryptAad​(java.nio.ByteBuffer ciphertext, java.nio.ByteBuffer plaintext, java.nio.ByteBuffer aad, byte[] nonce)  
      (package private) static java.security.Provider getConscrypt()  
      (package private) static int getKeyLength()  

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • logger

        private static final java.util.logging.Logger logger

      • CONSCRYPT

        private static final java.security.Provider CONSCRYPT

      • key

        private final byte[] key

      • cipher

        private final javax.crypto.Cipher cipher

    • Constructor Detail

      • AesGcmAeadCrypter

        AesGcmAeadCrypter​(byte[] key)
           throws java.security.GeneralSecurityException
        Throws:
        java.security.GeneralSecurityException

    • Method Detail

      • encryptAad

        private int encryptAad​(java.nio.ByteBuffer ciphertext,
                       java.nio.ByteBuffer plaintext,
                       @Nullable
                       java.nio.ByteBuffer aad,
                       byte[] nonce)
                throws java.security.GeneralSecurityException
        Throws:
        java.security.GeneralSecurityException

      • decryptAad

        private void decryptAad​(java.nio.ByteBuffer plaintext,
                        java.nio.ByteBuffer ciphertext,
                        @Nullable
                        java.nio.ByteBuffer aad,
                        byte[] nonce)
                 throws java.security.GeneralSecurityException
        Throws:
        java.security.GeneralSecurityException

      • encrypt

        public void encrypt​(java.nio.ByteBuffer ciphertext,
                    java.nio.ByteBuffer plaintext,
                    byte[] nonce)
             throws java.security.GeneralSecurityException
        Description copied from interface: AeadCrypter
        Encrypt plaintext into ciphertext buffer using the given nonce.
        Specified by:
        encrypt in interface AeadCrypter
        Parameters:
        ciphertext - the encrypted plaintext and the tag will be written into this buffer.
        plaintext - the input that should be encrypted.
        nonce - the unique nonce used for the encryption.
        Throws:
        java.security.GeneralSecurityException - if ciphertext buffer is short or the nonce does not have the expected size.

      • encrypt

        public void encrypt​(java.nio.ByteBuffer ciphertext,
                    java.nio.ByteBuffer plaintext,
                    java.nio.ByteBuffer aad,
                    byte[] nonce)
             throws java.security.GeneralSecurityException
        Description copied from interface: AeadCrypter
        Encrypt plaintext into ciphertext buffer using the given nonce with authenticated data.
        Specified by:
        encrypt in interface AeadCrypter
        Parameters:
        ciphertext - the encrypted plaintext and the tag will be written into this buffer.
        plaintext - the input that should be encrypted.
        aad - additional data that should be authenticated, but not encrypted.
        nonce - the unique nonce used for the encryption.
        Throws:
        java.security.GeneralSecurityException - if ciphertext buffer is short or the nonce does not have the expected size.

      • decrypt

        public void decrypt​(java.nio.ByteBuffer plaintext,
                    java.nio.ByteBuffer ciphertext,
                    byte[] nonce)
             throws java.security.GeneralSecurityException
        Description copied from interface: AeadCrypter
        Decrypt ciphertext into plaintext buffer using the given nonce.
        Specified by:
        decrypt in interface AeadCrypter
        Parameters:
        plaintext - the decrypted plaintext will be written into this buffer.
        ciphertext - the ciphertext and tag that should be decrypted.
        nonce - the nonce that was used for the encryption.
        Throws:
        java.security.GeneralSecurityException - if the tag is invalid or any of the inputs do not have the expected size.

      • decrypt

        public void decrypt​(java.nio.ByteBuffer plaintext,
                    java.nio.ByteBuffer ciphertext,
                    java.nio.ByteBuffer aad,
                    byte[] nonce)
             throws java.security.GeneralSecurityException
        Description copied from interface: AeadCrypter
        Decrypt ciphertext into plaintext buffer using the given nonce.
        Specified by:
        decrypt in interface AeadCrypter
        Parameters:
        plaintext - the decrypted plaintext will be written into this buffer.
        ciphertext - the ciphertext and tag that should be decrypted.
        aad - additional data that is checked for authenticity.
        nonce - the nonce that was used for the encryption.
        Throws:
        java.security.GeneralSecurityException - if the tag is invalid or any of the inputs do not have the expected size.

      • getKeyLength

        static int getKeyLength()

      • getConscrypt

        static java.security.Provider getConscrypt()