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(Unicode C) Duplicate openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crtDemonstrates how to encrypt to binary DER using 256-bit AES (CBC mode) as the underlying symmetric encryption algorithm, to produce PKCS7 enveloped data (binary DER). Duplicates the following openssl command: openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt
#include <C_CkCertW.h> #include <C_CkBinDataW.h> #include <C_CkCrypt2W.h> void ChilkatSample(void) { HCkCertW cert; BOOL success; HCkBinDataW bd; HCkCrypt2W crypt; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. cert = CkCertW_Create(); success = CkCertW_LoadFromFile(cert,L"qa_data/openssl/EE.cer"); if (success == FALSE) { wprintf(L"%s\n",CkCertW_lastErrorText(cert)); CkCertW_Dispose(cert); return; } bd = CkBinDataW_Create(); success = CkBinDataW_LoadFile(bd,L"qa_data/openssl/hello.txt"); // Assuming success.. crypt = CkCrypt2W_Create(); success = CkCrypt2W_SetEncryptCert(crypt,cert); if (success == FALSE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkCrypt2W_Dispose(crypt); return; } CkCrypt2W_putCryptAlgorithm(crypt,L"PKI"); // Indicate the underlying symmetric encryption to be used: CkCrypt2W_putPkcs7CryptAlg(crypt,L"aes"); CkCrypt2W_putKeyLength(crypt,256); CkCrypt2W_putCipherMode(crypt,L"cbc"); success = CkCrypt2W_CkEncryptFile(crypt,L"qa_data/openssl/hello.txt",L"qa_output/hello.txt.enc"); if (success == FALSE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkCrypt2W_Dispose(crypt); return; } wprintf(L"Success.\n"); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkCrypt2W_Dispose(crypt); } |
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