Chilkat • HOME • Android™ • AutoIt • C • C# • C++ • Chilkat2-Python • CkPython • Classic ASP • DataFlex • Delphi DLL • Go • Java • Node.js • Objective-C • PHP Extension • Perl • PowerBuilder • PowerShell • PureBasic • Ruby • SQL Server • Swift • Tcl • Unicode C • Unicode C++ • VB.NET • VBScript • Visual Basic 6.0 • Visual FoxPro • Xojo Plugin
(C) Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -ADemonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command: openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A
#include <C_CkPrivateKey.h> #include <C_CkRsa.h> void ChilkatSample(void) { HCkPrivateKey pkey; BOOL success; const char *pkeyXml; HCkRsa rsa; const char *strData; const char *base64Sig; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. pkey = CkPrivateKey_Create(); // Load the private key from an RSA PEM file: success = CkPrivateKey_LoadPemFile(pkey,"myKey.pem"); // Get the private key in XML format: pkeyXml = CkPrivateKey_getXml(pkey); rsa = CkRsa_Create(); // Import the private key into the RSA component: success = CkRsa_ImportPrivateKey(rsa,pkeyXml); if (success != TRUE) { printf("%s\n",CkRsa_lastErrorText(rsa)); CkPrivateKey_Dispose(pkey); CkRsa_Dispose(rsa); return; } // OpenSSL uses BigEndian byte ordering: CkRsa_putLittleEndian(rsa,FALSE); // The resulting signature will be a Base64 string: CkRsa_putEncodingMode(rsa,"base64"); // For simplicity, we're not loading // the data to be signed from a file. We are instead simply // using a literal string value. strData = "This is the text to be signed."; // Hash the input using MD5, and then sign the hash: // Other valid hash algorithm choices are "md2" and "sha-1". base64Sig = CkRsa_signStringENC(rsa,strData,"md5"); printf("%s\n",base64Sig); printf("Success!\n"); CkPrivateKey_Dispose(pkey); CkRsa_Dispose(rsa); } |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.