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(Unicode C) Duplicate OpensSSL to Sign File and Output Binary DERThis example duplicates the following: openssl smime -sign -in INPUT.xml -signer SIGN.PEM -passin pass:MYPASS -outform der -binary -nodetach -out SIGNED.P7M 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_CkPemW.h> #include <C_CkPrivateKeyW.h> #include <C_CkCertW.h> void ChilkatSample(void) { HCkCrypt2W crypt; HCkPemW pem; BOOL success; HCkPrivateKeyW privkey; HCkCertW cert; HCkCertW certFromP12; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt = CkCrypt2W_Create(); // Load the PEM containing cert + private key. pem = CkPemW_Create(); success = CkPemW_LoadPemFile(pem,L"qa_data/pem/myPem.pem",L"password"); if (success != TRUE) { wprintf(L"%s\n",CkPemW_lastErrorText(pem)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); return; } privkey = CkPemW_GetPrivateKey(pem,0); if (CkPemW_getLastMethodSuccess(pem) != TRUE) { wprintf(L"%s\n",CkPemW_lastErrorText(pem)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); return; } cert = CkPemW_GetCert(pem,0); if (CkPemW_getLastMethodSuccess(pem) != TRUE) { CkPrivateKeyW_Dispose(privkey); wprintf(L"%s\n",CkPemW_lastErrorText(pem)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); return; } success = CkCrypt2W_SetSigningCert2(crypt,cert,privkey); if (success != TRUE) { CkPrivateKeyW_Dispose(privkey); CkCertW_Dispose(cert); wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); return; } CkPrivateKeyW_Dispose(privkey); CkCertW_Dispose(cert); // Alternatively, we could use a .pfx/.p12 file. // (Chilkat also supports other formats/sources for cert/private keys...) certFromP12 = CkCertW_Create(); success = CkCertW_LoadPfxFile(certFromP12,L"qa_data/p12/myP12.p12",L"password"); if (success != TRUE) { wprintf(L"%s\n",CkCertW_lastErrorText(certFromP12)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); CkCertW_Dispose(certFromP12); return; } // The certificate, when loaded from a .pfx/.p12, will automatically // include the associated private key, assuming it's present in the .p12. // We don't have to explicitly provide the private key as in the // lines of code above that use the PEM file. success = CkCrypt2W_SetSigningCert(crypt,certFromP12); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); CkCertW_Dispose(certFromP12); 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.p7m"); if (success != TRUE) { wprintf(L"%s\n",CkCrypt2W_lastErrorText(crypt)); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); CkCertW_Dispose(certFromP12); return; } wprintf(L"Success.\n"); CkCrypt2W_Dispose(crypt); CkPemW_Dispose(pem); CkCertW_Dispose(certFromP12); } |
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