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(Unicode C) Duplicate OpensSSL to Create Signature using Cert and Key FilesThis example duplicates the following: openssl smime –sign -in something.xml -out something.der -signer mycert.crt -inkey cert.key -outform der –nodetach Note: Although "smime" is the OpenSSL command, it's not actually producing S/MIME. The arguments "-outform der -binary" indicates that the output is binary DER (i.e. the PKCS7 binary signature). The input can be any type of file: XML, PDF, JPG, ... *anything*...
#include <C_CkCrypt2W.h> #include <C_CkCertW.h> #include <C_CkBinDataW.h> #include <C_CkPrivateKeyW.h> void ChilkatSample(void) { HCkCrypt2W crypt; HCkCertW cert; BOOL success; HCkBinDataW bd; HCkPrivateKeyW privkey; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt = CkCrypt2W_Create(); // Load the cert and private key from separate files. cert = CkCertW_Create(); success = CkCertW_LoadFromFile(cert,L"myCert.crt"); if (success != TRUE) { wprintf(L"%s\n",CkCertW_lastErrorText(cert)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); return; } bd = CkBinDataW_Create(); success = CkBinDataW_LoadFile(bd,L"cert.key"); privkey = CkPrivateKeyW_Create(); // Load from any format private key. // If the file does not need a password, the 2nd arg is ignored. success = CkPrivateKeyW_LoadAnyFormat(privkey,bd,L"password_if_needed"); if (success != TRUE) { wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privkey)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkPrivateKeyW_Dispose(privkey); return; } success = CkCrypt2W_SetSigningCert2(crypt,cert,privkey); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkPrivateKeyW_Dispose(privkey); return; } // Create the opaque signature (PKCS7 binary DER that contains both the signature and original file data). success = CkCrypt2W_CreateP7M(crypt,L"qa_data/infile.anything",L"qa_output/outfile.der"); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkPrivateKeyW_Dispose(privkey); return; } wprintf(L"Success.\n"); CkCrypt2W_Dispose(crypt); CkCertW_Dispose(cert); CkBinDataW_Dispose(bd); CkPrivateKeyW_Dispose(privkey); } |
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