Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Unicode C) RSA SHA256 Signature using Private Key from Java KeystoreSigns plaintext using RSA SHA256 using a key from a Java keystore. Duplicatest this code: KeyStore keystore; // key repository for keys containing signature certificate String alias; // alias for the certificate in the key repository String password; // password for the certificate's private key String plaintext; // text being signed Signature signature = Signature.getInstance("SHA256withRSA"); signature.initSign((PrivateKey) keystore.getKey(alias, password.toCharArray())); signature.update(plaintext.getBytes("UTF-8")); byte[] rsa_text= signature.sign();
#include <C_CkJavaKeyStoreW.h> #include <C_CkPrivateKeyW.h> #include <C_CkRsaW.h> #include <C_CkByteData.h> void ChilkatSample(void) { HCkJavaKeyStoreW jks; const wchar_t *jksPassword; BOOL success; const wchar_t *privKeyPassword; BOOL caseSensitive; HCkPrivateKeyW privKey; HCkRsaW rsa; HCkByteData binarySignature; const wchar_t *plaintext; const wchar_t *signatureStr; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. jks = CkJavaKeyStoreW_Create(); jksPassword = L"secret"; // Load the Java keystore from a file. The JKS file password is used // to verify the keyed digest that is found at the very end of the keystore. // It verifies that the keystore has not been modified. success = CkJavaKeyStoreW_LoadFile(jks,jksPassword,L"qa_data/jks/sample_secret.jks"); if (success != TRUE) { wprintf(L"%s\n",CkJavaKeyStoreW_lastErrorText(jks)); CkJavaKeyStoreW_Dispose(jks); return; } // Get the private key from the JKS. // The private key password may be different than the file password. privKeyPassword = L"secret"; caseSensitive = FALSE; privKey = CkJavaKeyStoreW_FindPrivateKey(jks,privKeyPassword,L"some.alias",caseSensitive); if (CkJavaKeyStoreW_getLastMethodSuccess(jks) != TRUE) { wprintf(L"%s\n",CkJavaKeyStoreW_lastErrorText(jks)); CkJavaKeyStoreW_Dispose(jks); return; } // Establish the RSA object and tell it to use the private key.. rsa = CkRsaW_Create(); success = CkRsaW_ImportPrivateKeyObj(rsa,privKey); CkPrivateKeyW_Dispose(privKey); if (success != TRUE) { wprintf(L"%s\n",CkRsaW_lastErrorText(rsa)); CkJavaKeyStoreW_Dispose(jks); CkRsaW_Dispose(rsa); return; } // Indicate we'll be signing the utf-8 byte representation of the string.. CkRsaW_putCharset(rsa,L"utf-8"); // Sign some plaintext using RSA-SHA256 binarySignature = CkByteData_Create(); plaintext = L"this is the text to be signed"; success = CkRsaW_SignString(rsa,plaintext,L"SHA256",binarySignature); if (CkRsaW_getLastMethodSuccess(rsa) != TRUE) { wprintf(L"%s\n",CkRsaW_lastErrorText(rsa)); CkJavaKeyStoreW_Dispose(jks); CkRsaW_Dispose(rsa); CkByteData_Dispose(binarySignature); return; } // Alternatively, if the signature is desired in some encoded string form, // such as base64, base64-url, hex, etc. CkRsaW_putEncodingMode(rsa,L"base64-url"); signatureStr = CkRsaW_signStringENC(rsa,plaintext,L"SHA256"); wprintf(L"base64-url RSA signature: %s\n",signatureStr); CkJavaKeyStoreW_Dispose(jks); CkRsaW_Dispose(rsa); CkByteData_Dispose(binarySignature); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.