Aws::Utils::Crypto::SymmetricCryptoBufSrc Class Reference

#include <CryptoBuf.h>

Inheritance diagram for Aws::Utils::Crypto::SymmetricCryptoBufSrc:

Public Member Functions

 SymmetricCryptoBufSrc (Aws::IStream &stream, SymmetricCipher &cipher, CipherMode cipherMode, size_t bufferSize=DEFAULT_BUF_SIZE)

 

 SymmetricCryptoBufSrc (const SymmetricCryptoBufSrc &)=delete

 

 SymmetricCryptoBufSrc (SymmetricCryptoBufSrc &&)=delete

 

SymmetricCryptoBufSrc & operator= (const SymmetricCryptoBufSrc &)=delete

 

SymmetricCryptoBufSrc & operator= (SymmetricCryptoBufSrc &&)=delete

 

virtual ~SymmetricCryptoBufSrc ()

 

void Finalize () override

 

Public Member Functions inherited from Aws::Utils::Crypto::CryptoBuf

 CryptoBuf ()=default

 

virtual ~CryptoBuf ()=default

 

 CryptoBuf (const CryptoBuf &)=delete

 

 CryptoBuf (CryptoBuf &&rhs)=delete

 

Protected Member Functions

pos_type seekoff (off_type off, std::ios_base::seekdir dir, std::ios_base::openmode which=std::ios_base::in|std::ios_base::out) override

 

pos_type seekpos (pos_type pos, std::ios_base::openmode which=std::ios_base::in|std::ios_base::out) override

 

Detailed Description

StreamBuf that takes data from an input stream, encrypts or decrypts it, and causes all input received from the stream that is using it to go through the cipher. A common use case is a file that is encrypted on disk being read via ifstream and then read decrypted into memory. Or you could send a plain text file through an iostream and have it encrypted when the stream is read.

This streambuf is seekable, but it is very expensive to seek backwards since we have to reset the cipher and re-encrypt everything up to that point. So seeking should be avoided if at all possible.

Definition at line 54 of file CryptoBuf.h.

Constructor & Destructor Documentation

SymmetricCryptoBufSrc() [1/3]

Aws::Utils::Crypto::SymmetricCryptoBufSrc::SymmetricCryptoBufSrc ( Aws::IStream &  stream,

SymmetricCipher &  cipher,

CipherMode  cipherMode,

size_t  bufferSize = DEFAULT_BUF_SIZE 

)

stream to src from cipher to encrypt or decrypt the src stream with mode to use cipher in. Encryption or Decryption buffersize, the size of the src buffers to read at a time. Defaults to 1kb

SymmetricCryptoBufSrc() [2/3]

Aws::Utils::Crypto::SymmetricCryptoBufSrc::SymmetricCryptoBufSrc ( const SymmetricCryptoBufSrc &  )

delete

SymmetricCryptoBufSrc() [3/3]

Aws::Utils::Crypto::SymmetricCryptoBufSrc::SymmetricCryptoBufSrc ( SymmetricCryptoBufSrc &&  )

delete

~SymmetricCryptoBufSrc()

virtual Aws::Utils::Crypto::SymmetricCryptoBufSrc::~SymmetricCryptoBufSrc ( )

inlinevirtual

Definition at line 71 of file CryptoBuf.h.

Member Function Documentation

Finalize()

void Aws::Utils::Crypto::SymmetricCryptoBufSrc::Finalize ( )

inlineoverridevirtual

This call isn't necessary if you loop over the stream.read until you reach EOF, if you happen to read the exact amount as the in memory buffers and finish the stream, but never finish the finalize call you'll need to be sure to call this. This is automatically called by the destructor.

Reimplemented from Aws::Utils::Crypto::CryptoBuf.

Definition at line 78 of file CryptoBuf.h.

operator=() [1/2]

SymmetricCryptoBufSrc & Aws::Utils::Crypto::SymmetricCryptoBufSrc::operator= ( const SymmetricCryptoBufSrc &  )

delete

operator=() [2/2]

SymmetricCryptoBufSrc & Aws::Utils::Crypto::SymmetricCryptoBufSrc::operator= ( SymmetricCryptoBufSrc &&  )

delete

seekoff()

pos_type Aws::Utils::Crypto::SymmetricCryptoBufSrc::seekoff ( off_type  off,

std::ios_base::seekdir  dir,

std::ios_base::openmode  which = std::ios_base::in|std::ios_base::out 

)

overrideprotected

seekpos()

pos_type Aws::Utils::Crypto::SymmetricCryptoBufSrc::seekpos ( pos_type  pos,

std::ios_base::openmode  which = std::ios_base::in|std::ios_base::out 

)

overrideprotected

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The documentation for this class was generated from the following file:

• src/aws-cpp-sdk-core/include/aws/core/utils/crypto/CryptoBuf.h