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(Unicode C) DSA Generate KeyGenerates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted). An encrypted DSA PEM looks like this: -----BEGIN DSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0 QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8 ... Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM -----END DSA PRIVATE KEY-----
#include <C_CkDsaW.h> void ChilkatSample(void) { HCkDsaW dsa; BOOL success; const wchar_t *pemStr; const wchar_t *xmlStr; BOOL bPublicOnly; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. dsa = CkDsaW_Create(); // Call GenKey to generate a new DSA key. // The number of bits should be at least 1024 and a multiple // of 64. Typical values are either 1024 or 2048. // DSA key generation is compute intensive and may take // a short while to complete. success = CkDsaW_GenKey(dsa,2048); if (success != TRUE) { wprintf(L"%s\n",CkDsaW_lastErrorText(dsa)); CkDsaW_Dispose(dsa); return; } // Extract the private and public parts to PEM or DER format // and save to files... // First for the public key... // The public key never needs to be encrypted. // Save the public key in PEM format: pemStr = CkDsaW_toPublicPem(dsa); // This example will not check the return value of SaveText... success = CkDsaW_SaveText(dsa,pemStr,L"dsa_pub.pem"); // Save the public key in DER format: success = CkDsaW_ToPublicDerFile(dsa,L"dsa_pub.der"); bPublicOnly = TRUE; // Save to XML xmlStr = CkDsaW_toXml(dsa,bPublicOnly); success = CkDsaW_SaveText(dsa,xmlStr,L"dsa_pub.xml"); // ------------------------------------ // Now for the private key.... // ------------------------------------ // Unencrypted PEM: pemStr = CkDsaW_toPem(dsa); success = CkDsaW_SaveText(dsa,pemStr,L"dsa_priv.pem"); // Encrypted PEM: pemStr = CkDsaW_toEncryptedPem(dsa,L"myPassword"); success = CkDsaW_SaveText(dsa,pemStr,L"dsa_privEncrypted.pem"); // DER: success = CkDsaW_ToDerFile(dsa,L"dsa_priv.der"); // XML: bPublicOnly = FALSE; xmlStr = CkDsaW_toXml(dsa,bPublicOnly); success = CkDsaW_SaveText(dsa,xmlStr,L"dsa_priv.xml"); wprintf(L"Finished!\n"); CkDsaW_Dispose(dsa); } |
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