I’m using crypto package in poco library.
the application is release /MT and i link to PocoCryptomt.lib, PocoFoundationmt.lib
PocoCryptomt.lib is built with static vc openssl library libeay32mt.lib
I use this code
#define POCO_STATIC
#include <iostream>
#include <Poco\Crypto\Cipher.h>
#include <Poco\Crypto\CipherFactory.h>
#include <Poco\Crypto\CipherKey.h>
#include <string>
using namespace std;
using namespace Poco::Crypto;
typedef std::vector<unsigned char> ByteVec;
void main()
{
unsigned char k[]={49, 17, 199, 69, 242, 178, 153, 25, 129, 86, 8, 125, 151, 171, 20, 162, 4, 247, 64, 221, 42, 57, 80, 69, 48, 164, 8, 34, 44, 24, 9, 90};
unsigned char i[]={ 219, 157, 180, 130, 179, 204, 171, 242, 251, 112, 209, 173, 100, 219, 141, 179};
ByteVec key= ByteVec(k,k+sizeof(k)/sizeof(unsigned char));
ByteVec iv= ByteVec(i,i+sizeof(i)/sizeof(unsigned char));
//CipherFactory& cf = CipherFactory::defaultFactory;
CipherFactory& cf = CipherFactory::defaultFactory();
Cipher* c=cf.createCipher(CipherKey("aes-256",key,iv));
string plain="Ahmed";
string crypted=c->encryptString(plain,Cipher::ENC_BASE64);
string decrypted=c->decryptString(crypted,Cipher::ENC_BASE64);
cout<<plain<<endl<<crypted<<decrypted;
cout<<endl;system("PAUSE");
}
I get the following error
1>------ Rebuild All started: Project: Encryption, Configuration: Release Win32 ------
1> Main.cpp
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_get_cipherbyname
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_flags
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_BytesToKey
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_md5
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_key_length
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_block_size
1>PocoCryptomt.lib(CipherKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_iv_length
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _ERR_error_string
1>PocoCryptomt.lib(RSACipherImpl.obj) : error LNK2001: unresolved external symbol _ERR_error_string
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _ERR_get_error
1>PocoCryptomt.lib(RSACipherImpl.obj) : error LNK2001: unresolved external symbol _ERR_get_error
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _EVP_CipherInit
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_CTX_cleanup
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _EVP_CIPHER_CTX_block_size
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _EVP_CipherUpdate
1>PocoCryptomt.lib(CipherImpl.obj) : error LNK2001: unresolved external symbol _EVP_CipherFinal_ex
1>PocoCryptomt.lib(RSACipherImpl.obj) : error LNK2001: unresolved external symbol _RSA_size
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _RSA_size
1>PocoCryptomt.lib(RSACipherImpl.obj) : error LNK2001: unresolved external symbol _RSA_public_encrypt
1>PocoCryptomt.lib(RSACipherImpl.obj) : error LNK2001: unresolved external symbol _RSA_private_decrypt
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _CRYPTO_set_dynlock_destroy_callback
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _CRYPTO_set_dynlock_lock_callback
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _CRYPTO_set_dynlock_create_callback
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _CRYPTO_set_locking_callback
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _CRYPTO_num_locks
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _RAND_seed
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _OPENSSL_add_all_algorithms_noconf
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _SSL_load_error_strings
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _SSL_library_init
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _OPENSSL_config
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _ERR_free_strings
1>PocoCryptomt.lib(OpenSSLInitializer.obj) : error LNK2001: unresolved external symbol _EVP_cleanup
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_PKEY_get1_RSA
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _X509_get_pubkey
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BN_free
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _RSA_generate_key_ex
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BN_set_word
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BN_new
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _RSA_new
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _PEM_read_bio_RSAPrivateKey
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_free
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _PEM_read_bio_RSAPublicKey
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_ctrl
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_new
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_s_file
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_new_mem_buf
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _RSA_free
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _PEM_write_bio_RSAPrivateKey
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _EVP_des_ede3_cbc
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _PEM_write_bio_RSAPublicKey
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BIO_s_mem
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BN_bn2bin
1>PocoCryptomt.lib(RSAKeyImpl.obj) : error LNK2001: unresolved external symbol _BN_num_bits
1>F:\WorkShop\c++\Win32\Encryption\Release\Encryption.exe : fatal error LNK1120: 50 unresolved externals
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
it works fin with /MD , PocoCryptomd.lib, PocoFoundationmd.lib
what can i do to solve this problem
You have to link with ssleay32[mt].lib as well as libeay32[mt].lib.