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(C) Convert Java KeyStore to PEMLoads a Java keystore file and saves the trusted certificate entries to a PEM file. Note: This example requires Chilkat v11.0.0 or greater.
#include <C_CkJavaKeyStore.h> #include <C_CkFileAccess.h> #include <C_CkCert.h> void ChilkatSample(void) { BOOL success; HCkJavaKeyStore jks; const char *jksPassword; HCkFileAccess fac; int numCerts; HCkCert cert; const char *pem; int i; success = FALSE; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. jks = CkJavaKeyStore_Create(); jksPassword = "myJksPassword"; // 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 = CkJavaKeyStore_LoadFile(jks,jksPassword,"/someDir/keyStore.jks"); if (success == FALSE) { printf("%s\n",CkJavaKeyStore_lastErrorText(jks)); CkJavaKeyStore_Dispose(jks); return; } // Open/create the output PEM file. // This example uses Chilkat's file access class for writing the output file. // You may replace the file I/O lines of code with whatever is most convenient for you. fac = CkFileAccess_Create(); success = CkFileAccess_OpenForWrite(fac,"/pemFiles/caCerts.pem"); if (success == FALSE) { printf("%s\n",CkFileAccess_lastErrorText(fac)); CkJavaKeyStore_Dispose(jks); CkFileAccess_Dispose(fac); return; } numCerts = CkJavaKeyStore_getNumTrustedCerts(jks); cert = CkCert_Create(); // Iterate over the trusted certs, get the PEM for each, // and append it to the output file. i = 0; while (i < numCerts) { CkJavaKeyStore_TrustedCertAt(jks,i,cert); // Get the certificate in PEM format. pem = CkCert_exportCertPem(cert); // Append the PEM string to the open file. success = CkFileAccess_AppendText(fac,pem,"utf-8"); if (success != TRUE) { printf("%s\n",CkFileAccess_lastErrorText(fac)); CkJavaKeyStore_Dispose(jks); CkFileAccess_Dispose(fac); CkCert_Dispose(cert); return; } i = i + 1; } // Close the output file. CkFileAccess_FileClose(fac); printf("Trusted certificates saved to PEM.\n"); CkJavaKeyStore_Dispose(jks); CkFileAccess_Dispose(fac); CkCert_Dispose(cert); } |
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