javascript - CryptoJS to OpenSSL encryption conversion -


i need port javascript code c99 backend. in javascript code use cryptojs perform aes encryption:

var key = cryptojs.md5(math.random().tostring()).tostring(); key = cryptojs.enc.hex.parse(key);  var iv = cryptojs.md5(math.random().tostring()).tostring(); iv = cryptojs.enc.hex.parse(iv);  var data = "testdata"; var encrypted = cryptojs.aes.encrypt(data, key, { iv:iv, mode:cryptojs.mode.cbc, padding:cryptojs.pad.zeropadding });

now need implement same code in c openssl library. have created random md5 strings without problem cannot see how implement aes encryption 0 padding. have:

bool crypto_aes_encrypt(const char* data, unsigned char *key, unsigned char *iv, unsigned char **out_buf, int *out_buf_len) {     err_load_crypto_strings();     openssl_add_all_algorithms_conf();      /* initialize cipher context */     evp_cipher_ctx *ctx = evp_cipher_ctx_new();     if(!ctx) {         return null;     }      /* initialize aes encryption */     if(evp_encryptinit_ex(ctx, evp_aes_256_cbc(), null, key, iv) != 1) {         return null;     }      /* encrypt data */     *out_buf = (unsigned char*) malloc(2048 * sizeof(char));     *out_buf_len = 0;     if(evp_encryptupdate(ctx, *out_buf, out_buf_len, (const unsigned char*) data, strlen(data)) != 1) {         free(out_buf);         return null;     }      if(evp_encryptfinal(ctx, *out_buf + *out_buf_len, out_buf_len) != 1) {         free(out_buf);         return null;     }      evp_cipher_ctx_free(ctx);     evp_cleanup();     err_free_strings();      return true; }

how can implement zeropadding in openssl used in cryptojs?


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