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Fixed AES IV handling

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This commit is contained in:
Peter Conrad 2019-04-07 10:48:40 +02:00
parent 006f048ac5
commit 5a9cf32696
1 changed files with 9 additions and 2 deletions
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11
src/crypto/aes.cpp
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@ -9,6 +9,7 @@
#include <fc/log/logger.hpp>
#include <fc/thread/thread.hpp>
#include <boost/endian/buffers.hpp>
#include <boost/thread/mutex.hpp>
#include <openssl/opensslconf.h>
#ifndef OPENSSL_THREADS
@ -52,7 +53,10 @@ void aes_encoder::init( const fc::sha256& key, const fc::uint128& init_value )
* In this example we are using 256 bit AES (i.e. a 256 bit key). The
* IV size for *most* modes is the same as the block size. For AES this
* is 128 bits */
if(1 != EVP_EncryptInit_ex(my->ctx, EVP_aes_256_cbc(), NULL, (unsigned char*)&key, (unsigned char*)&init_value))
boost::endian::little_uint64_buf_t iv[2];
iv[0] = init_value.hi;
iv[1] = init_value.lo;
if(1 != EVP_EncryptInit_ex(my->ctx, EVP_aes_256_cbc(), NULL, (unsigned char*)&key, (const unsigned char*)iv[0].data()))
{
FC_THROW_EXCEPTION( aes_exception, "error during aes 256 cbc encryption init",
("s", ERR_error_string( ERR_get_error(), nullptr) ) );
@ -117,7 +121,10 @@ void aes_decoder::init( const fc::sha256& key, const fc::uint128& init_value )
* In this example we are using 256 bit AES (i.e. a 256 bit key). The
* IV size for *most* modes is the same as the block size. For AES this
* is 128 bits */
if(1 != EVP_DecryptInit_ex(my->ctx, EVP_aes_256_cbc(), NULL, (unsigned char*)&key, (unsigned char*)&init_value))
boost::endian::little_uint64_buf_t iv[2];
iv[0] = init_value.hi;
iv[1] = init_value.lo;
if(1 != EVP_DecryptInit_ex(my->ctx, EVP_aes_256_cbc(), NULL, (unsigned char*)&key, (const unsigned char*)iv[0].data()))
{
FC_THROW_EXCEPTION( aes_exception, "error during aes 256 cbc encryption init",
("s", ERR_error_string( ERR_get_error(), nullptr) ) );