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(Unicode C) Working with PEM Encrypted Private KeysDemonstrates how to load and save PEM encrypted private keys.
#include <C_CkGlobalW.h> #include <C_CkPemW.h> #include <C_CkFileAccessW.h> #include <C_CkPrivateKeyW.h> void ChilkatSample(void) { HCkGlobalW chilkatGlob; BOOL success; HCkPemW pem; const wchar_t *pemPassword; HCkFileAccessW fac; const wchar_t *pemText; int i; int numPrivateKeys; HCkPrivateKeyW privKey; // Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program // by calling UnlockBundle. It requires a Bundle unlock code. chilkatGlob = CkGlobalW_Create(); success = CkGlobalW_UnlockBundle(chilkatGlob,L"Anything for 30-day trial."); if (success != TRUE) { wprintf(L"%s\n",CkGlobalW_lastErrorText(chilkatGlob)); CkGlobalW_Dispose(chilkatGlob); return; } pem = CkPemW_Create(); pemPassword = L"secret"; // To load a PEM file containing encrypted private keys, simply // provide the password. success = CkPemW_LoadPemFile(pem,L"/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword); if (success != TRUE) { wprintf(L"%s\n",CkPemW_lastErrorText(pem)); CkGlobalW_Dispose(chilkatGlob); CkPemW_Dispose(pem); return; } fac = CkFileAccessW_Create(); pemText = CkFileAccessW_readEntireTextFile(fac,L"/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword); // To load a PEM from a string, call LoadPem instead of LoadPemFile: success = CkPemW_LoadPem(pem,pemText); if (success != TRUE) { wprintf(L"%s\n",CkPemW_lastErrorText(pem)); CkGlobalW_Dispose(chilkatGlob); CkPemW_Dispose(pem); CkFileAccessW_Dispose(fac); return; } // A few notes: // The PEM may contain both private keys and certificates (or anything else). // The password is utilized for whatever content in the PEM is encrypted. // It is OK to have both encrypted and non-encrypted content within a given PEM. // PEM private keys can be encrypted in different formats. The LoadPem and LoadPemFile // methods automatically handle the different formats. // One format is PKCS8 and is indicated by this delimiter within the PEM: // -----BEGIN ENCRYPTED PRIVATE KEY----- // MIICoTAbBgkqhkiG9w0BBQMwDgQIfdD0zv24lgkCAggABIICgE0PdHJmRbNs6cBX // ... // Another format, we'll call "passphrase" looks like this in the PEM: // -----BEGIN RSA PRIVATE KEY----- // Proc-Type: 4,ENCRYPTED // DEK-Info: DES-EDE3-CBC,A4215544D11C5D0C // // paqy9XRexcSjurHfG0xhCaUD0HrvIdhuC0CbRxxxeMlkLaV6+uT80rBxt2AaibWG // ... // Show the bit length of each private key: numPrivateKeys = CkPemW_getNumPrivateKeys(pem); if (numPrivateKeys == 0) { wprintf(L"%s\n",(L"Error: Expected the PEM to contain private keys.")); CkGlobalW_Dispose(chilkatGlob); CkPemW_Dispose(pem); CkFileAccessW_Dispose(fac); return; } for (i = 1; i <= numPrivateKeys; i++) { privKey = CkPemW_GetPrivateKey(pem,i - 1); wprintf(L"%d: %d bits\n",i,CkPrivateKeyW_getBitLength(privKey)); CkPrivateKeyW_Dispose(privKey); } CkGlobalW_Dispose(chilkatGlob); CkPemW_Dispose(pem); CkFileAccessW_Dispose(fac); } |
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