1392 lines
33 KiB
C
1392 lines
33 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* ifdef HAVE_CONFIG_H */
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#ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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#elif defined __GNUC__
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# define alloca __builtin_alloca
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#elif defined _AIX
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# define alloca __alloca
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#elif defined _MSC_VER
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# include <malloc.h>
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# define alloca _alloca
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#else /* ifdef HAVE_ALLOCA_H */
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C"
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# endif /* ifdef __cplusplus */
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void *alloca(size_t);
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#endif /* ifdef HAVE_ALLOCA_H */
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* ifdef HAVE_UNISTD_H */
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif /* ifdef HAVE_NETINET_IN_H */
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#ifdef HAVE_SIGNATURE
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# include <sys/mman.h>
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# ifdef HAVE_GNUTLS
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# include <gnutls/gnutls.h>
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# include <gnutls/x509.h>
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# else /* ifdef HAVE_GNUTLS */
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# include <openssl/rsa.h>
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# include <openssl/objects.h>
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# include <openssl/err.h>
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# include <openssl/ssl.h>
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# include <openssl/dh.h>
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# include <openssl/dsa.h>
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# include <openssl/evp.h>
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# include <openssl/x509.h>
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# include <openssl/pem.h>
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# endif /* ifdef HAVE_GNUTLS */
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#endif /* ifdef HAVE_SIGNATURE */
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#ifdef HAVE_OPENSSL
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# include <openssl/sha.h>
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#endif /* ifdef HAVE_OPENSSL */
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#ifdef HAVE_CIPHER
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# ifdef HAVE_GNUTLS
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# if defined EET_USE_NEW_PUBKEY_VERIFY_HASH || defined EET_USE_NEW_PRIVKEY_SIGN_DATA
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# include <gnutls/abstract.h>
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# endif
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# include <gnutls/x509.h>
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# include <gcrypt.h>
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# else /* ifdef HAVE_GNUTLS */
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# include <openssl/evp.h>
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# include <openssl/hmac.h>
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# include <openssl/rand.h>
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# endif /* ifdef HAVE_GNUTLS */
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#endif /* ifdef HAVE_CIPHER */
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#include "Eet.h"
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#include "Eet_private.h"
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#define EET_MAGIC_SIGN 0x1ee74271
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#ifdef HAVE_GNUTLS
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# define MAX_KEY_LEN 32
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# define MAX_IV_LEN 16
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#else /* ifdef HAVE_GNUTLS */
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# define MAX_KEY_LEN EVP_MAX_KEY_LENGTH
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# define MAX_IV_LEN EVP_MAX_IV_LENGTH
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#endif /* ifdef HAVE_GNUTLS */
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#ifdef HAVE_CIPHER
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# ifdef HAVE_GNUTLS
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static Eet_Error
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eet_hmac_sha1(const void *key,
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size_t key_len,
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const void *data,
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size_t data_len,
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unsigned char *res);
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# endif /* ifdef HAVE_GNUTLS */
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static Eet_Error
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eet_pbkdf2_sha1(const char *key,
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int key_len,
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const unsigned char *salt,
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unsigned int salt_len,
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int iter,
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unsigned char *res,
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int res_len);
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#endif /* ifdef HAVE_CIPHER */
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struct _Eet_Key
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{
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int references;
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#ifdef HAVE_SIGNATURE
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# ifdef HAVE_GNUTLS
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gnutls_x509_crt_t certificate;
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gnutls_x509_privkey_t private_key;
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# else /* ifdef HAVE_GNUTLS */
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X509 *certificate;
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EVP_PKEY *private_key;
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# endif /* ifdef HAVE_GNUTLS */
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#endif /* ifdef HAVE_SIGNATURE */
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};
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EAPI Eet_Key *
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eet_identity_open(const char *certificate_file,
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const char *private_key_file,
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Eet_Key_Password_Callback cb)
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{
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#ifdef HAVE_SIGNATURE
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/* Signature declarations */
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Eet_Key *key = NULL;
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# ifdef HAVE_GNUTLS
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/* Gnutls private declarations */
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Eina_File *f = NULL;
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void *data = NULL;
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gnutls_datum_t load_file = { NULL, 0 };
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char pass[1024];
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/* Init */
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if (!(key = malloc(sizeof(Eet_Key))))
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goto on_error;
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key->references = 1;
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if (gnutls_x509_crt_init(&(key->certificate)))
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goto on_error;
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if (gnutls_x509_privkey_init(&(key->private_key)))
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goto on_error;
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/* Mmap certificate_file */
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f = eina_file_open(certificate_file, 0);
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if (!f)
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goto on_error;
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/* let's make mmap safe and just get 0 pages for IO erro */
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eina_mmap_safety_enabled_set(EINA_TRUE);
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data = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
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if (!data) goto on_error;
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/* Import the certificate in Eet_Key structure */
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load_file.data = data;
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load_file.size = eina_file_size_get(f);
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if (gnutls_x509_crt_import(key->certificate, &load_file,
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GNUTLS_X509_FMT_PEM) < 0)
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goto on_error;
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eina_file_map_free(f, data);
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/* Reset values */
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eina_file_close(f);
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f = NULL;
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data = NULL;
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load_file.data = NULL;
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load_file.size = 0;
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/* Mmap private_key_file */
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f = eina_file_open(private_key_file, 0);
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if (!f)
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goto on_error;
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/* let's make mmap safe and just get 0 pages for IO erro */
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eina_mmap_safety_enabled_set(EINA_TRUE);
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data = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
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if (!data)
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goto on_error;
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/* Import the private key in Eet_Key structure */
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load_file.data = data;
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load_file.size = eina_file_size_get(f);
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/* Try to directly import the PEM encoded private key */
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if (gnutls_x509_privkey_import(key->private_key, &load_file,
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GNUTLS_X509_FMT_PEM) < 0)
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{
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/* Else ask for the private key pass */
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if (cb && cb(pass, 1024, 0, NULL))
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{
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/* If pass then try to decode the pkcs 8 private key */
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if (gnutls_x509_privkey_import_pkcs8(key->private_key, &load_file,
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GNUTLS_X509_FMT_PEM, pass, 0))
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goto on_error;
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}
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else
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/* Else try to import the pkcs 8 private key without pass */
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if (gnutls_x509_privkey_import_pkcs8(key->private_key, &load_file,
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GNUTLS_X509_FMT_PEM, NULL, 1))
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goto on_error;
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}
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eina_file_map_free(f, data);
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eina_file_close(f);
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return key;
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on_error:
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if (data) eina_file_map_free(f, data);
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if (f) eina_file_close(f);
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if (key)
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{
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if (key->certificate)
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gnutls_x509_crt_deinit(key->certificate);
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if (key->private_key)
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gnutls_x509_privkey_deinit(key->private_key);
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free(key);
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}
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# else /* ifdef HAVE_GNUTLS */
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/* Openssl private declarations */
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FILE *fp;
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EVP_PKEY *pkey = NULL;
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X509 *cert = NULL;
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/* Load the X509 certificate in memory. */
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fp = fopen(certificate_file, "r");
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if (!fp)
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return NULL;
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cert = PEM_read_X509(fp, NULL, NULL, NULL);
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fclose(fp);
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if (!cert)
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goto on_error;
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/* Check the presence of the public key. Just in case. */
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pkey = X509_get_pubkey(cert);
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if (!pkey)
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goto on_error;
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/* Load the private key in memory. */
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fp = fopen(private_key_file, "r");
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if (!fp)
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goto on_error;
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pkey = PEM_read_PrivateKey(fp, NULL, cb, NULL);
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fclose(fp);
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if (!pkey)
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goto on_error;
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/* Load the certificate and the private key in Eet_Key structure */
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key = malloc(sizeof(Eet_Key));
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if (!key)
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goto on_error;
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key->references = 1;
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key->certificate = cert;
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key->private_key = pkey;
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return key;
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on_error:
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if (cert)
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X509_free(cert);
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if (pkey)
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EVP_PKEY_free(pkey);
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# endif /* ifdef HAVE_GNUTLS */
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#else
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certificate_file = NULL;
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private_key_file = NULL;
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cb = NULL;
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#endif /* ifdef HAVE_SIGNATURE */
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return NULL;
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}
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EAPI void
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eet_identity_close(Eet_Key *key)
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{
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#ifdef HAVE_SIGNATURE
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if (!key || (key->references > 0))
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return;
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# ifdef HAVE_GNUTLS
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gnutls_x509_crt_deinit(key->certificate);
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gnutls_x509_privkey_deinit(key->private_key);
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# else /* ifdef HAVE_GNUTLS */
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X509_free(key->certificate);
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EVP_PKEY_free(key->private_key);
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# endif /* ifdef HAVE_GNUTLS */
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free(key);
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#else
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key = NULL;
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#endif /* ifdef HAVE_SIGNATURE */
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}
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EAPI void
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eet_identity_print(Eet_Key *key,
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FILE *out)
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{
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#ifdef HAVE_SIGNATURE
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# ifdef HAVE_GNUTLS
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const char *names[6] = {
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"Modulus",
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"Public exponent",
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"Private exponent",
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"First prime",
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"Second prime",
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"Coefficient"
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};
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int err = 0;
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gnutls_datum_t data = { NULL, 0 };
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gnutls_datum_t rsa_raw[6];
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size_t size = 128;
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char *res = NULL;
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char buf[33];
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unsigned int i, j;
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if (!key)
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return;
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if (key->private_key)
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{
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if (gnutls_x509_privkey_export_rsa_raw(key->private_key,
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rsa_raw + 0, /* Modulus */
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rsa_raw + 1, /* Public exponent */
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rsa_raw + 2, /* Private exponent */
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rsa_raw + 3, /* First prime */
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rsa_raw + 4, /* Second prime */
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rsa_raw + 5)) /* Coefficient */
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goto on_error;
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if (!(res = malloc(size)))
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goto on_error;
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fprintf(out, "Private Key:\n");
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buf[32] = '\0';
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for (i = 0; i < 6; i++)
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{
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while ((err = gnutls_hex_encode(rsa_raw + i, res, &size)) ==
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GNUTLS_E_SHORT_MEMORY_BUFFER)
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{
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size += 128;
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if (!(res = realloc(res, size)))
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goto on_error;
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}
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if (err)
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goto on_error;
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fprintf(out, "\t%s:\n", names[i]);
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for (j = 0; strlen(res) > j; j += 32)
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{
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snprintf(buf, 32, "%s", res + j);
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fprintf(out, "\t\t%s\n", buf);
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}
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}
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free(res);
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res = NULL;
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}
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|
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if (key->certificate)
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{
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fprintf(out, "Public certificate:\n");
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if (gnutls_x509_crt_print(key->certificate, GNUTLS_X509_CRT_FULL,
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&data))
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goto on_error;
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|
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fprintf(out, "%s\n", data.data);
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gnutls_free(data.data);
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data.data = NULL;
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}
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on_error:
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if (res)
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free(res);
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if (data.data)
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gnutls_free(data.data);
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return;
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# else /* ifdef HAVE_GNUTLS */
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RSA *rsa;
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DSA *dsa;
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DH *dh;
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|
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if (!key)
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return;
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|
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rsa = EVP_PKEY_get1_RSA(key->private_key);
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if (rsa)
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{
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fprintf(out, "Private key (RSA):\n");
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RSA_print_fp(out, rsa, 0);
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}
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|
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dsa = EVP_PKEY_get1_DSA(key->private_key);
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if (dsa)
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{
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fprintf(out, "Private key (DSA):\n");
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DSA_print_fp(out, dsa, 0);
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}
|
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|
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dh = EVP_PKEY_get1_DH(key->private_key);
|
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if (dh)
|
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{
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fprintf(out, "Private key (DH):\n");
|
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DHparams_print_fp(out, dh);
|
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}
|
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|
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fprintf(out, "Public certificate:\n");
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X509_print_fp(out, key->certificate);
|
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# endif /* ifdef HAVE_GNUTLS */
|
|
#else /* ifdef HAVE_SIGNATURE */
|
|
key = NULL;
|
|
out = NULL;
|
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ERR("You need to compile signature support in EET.");
|
|
#endif /* ifdef HAVE_SIGNATURE */
|
|
}
|
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|
|
void
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eet_identity_ref(Eet_Key *key)
|
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{
|
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if (!key)
|
|
return;
|
|
|
|
key->references++;
|
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}
|
|
|
|
void
|
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eet_identity_unref(Eet_Key *key)
|
|
{
|
|
if (!key)
|
|
return;
|
|
|
|
key->references--;
|
|
eet_identity_close(key);
|
|
}
|
|
|
|
void *
|
|
eet_identity_compute_sha1(const void *data_base,
|
|
unsigned int data_length,
|
|
int *sha1_length)
|
|
{
|
|
void *result;
|
|
|
|
#ifdef HAVE_SIGNATURE
|
|
# ifdef HAVE_GNUTLS
|
|
result = malloc(gcry_md_get_algo_dlen(GCRY_MD_SHA1));
|
|
if (!result)
|
|
return NULL;
|
|
|
|
gcry_md_hash_buffer(GCRY_MD_SHA1, result, data_base, data_length);
|
|
if (sha1_length)
|
|
*sha1_length = gcry_md_get_algo_dlen(GCRY_MD_SHA1);
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
# ifdef HAVE_OPENSSL
|
|
result = malloc(SHA_DIGEST_LENGTH);
|
|
if (!result)
|
|
return NULL;
|
|
|
|
SHA1(data_base, data_length, result);
|
|
if (sha1_length)
|
|
*sha1_length = SHA_DIGEST_LENGTH;
|
|
|
|
# else /* ifdef HAVE_OPENSSL */
|
|
result = NULL;
|
|
# endif /* ifdef HAVE_OPENSSL */
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
#else /* ifdef HAVE_SIGNATURE */
|
|
data_base = NULL;
|
|
data_length = 0;
|
|
sha1_length = NULL;
|
|
result = NULL;
|
|
#endif /* ifdef HAVE_SIGNATURE */
|
|
|
|
return result;
|
|
}
|
|
|
|
Eet_Error
|
|
eet_identity_sign(FILE *fp,
|
|
Eet_Key *key)
|
|
{
|
|
#ifdef HAVE_SIGNATURE
|
|
Eet_Error err = EET_ERROR_NONE;
|
|
struct stat st_buf;
|
|
void *data;
|
|
int fd;
|
|
int head[3];
|
|
unsigned char *sign = NULL;
|
|
unsigned char *cert = NULL;
|
|
# ifdef HAVE_GNUTLS
|
|
gnutls_datum_t datum = { NULL, 0 };
|
|
size_t sign_len = 0;
|
|
size_t cert_len = 0;
|
|
#ifdef EET_USE_NEW_PRIVKEY_SIGN_DATA
|
|
gnutls_datum_t signum = { NULL, 0 };
|
|
gnutls_privkey_t privkey;
|
|
#endif
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
EVP_MD_CTX md_ctx;
|
|
unsigned int sign_len = 0;
|
|
int cert_len = 0;
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
/* A few check and flush pending write. */
|
|
if (!fp || !key || !key->certificate || !key->private_key)
|
|
return EET_ERROR_BAD_OBJECT;
|
|
|
|
/* Get the file size. */
|
|
fd = fileno(fp);
|
|
if (fd < 0)
|
|
return EET_ERROR_BAD_OBJECT;
|
|
|
|
if (fstat(fd, &st_buf) < 0)
|
|
return EET_ERROR_MMAP_FAILED;
|
|
|
|
/* let's make mmap safe and just get 0 pages for IO erro */
|
|
eina_mmap_safety_enabled_set(EINA_TRUE);
|
|
|
|
/* Map the file in memory. */
|
|
data = mmap(NULL, st_buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
|
|
if (data == MAP_FAILED)
|
|
return EET_ERROR_MMAP_FAILED;
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
datum.data = data;
|
|
datum.size = st_buf.st_size;
|
|
|
|
/* Get the signature length */
|
|
#ifdef EET_USE_NEW_PRIVKEY_SIGN_DATA
|
|
if (gnutls_privkey_init(&privkey) < 0)
|
|
{
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
if (gnutls_privkey_import_x509(privkey, key->private_key, 0) < 0)
|
|
{
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
if (gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA1, 0, &datum, &signum) < 0)
|
|
{
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
sign = signum.data;
|
|
sign_len = signum.size;
|
|
#else
|
|
if (gnutls_x509_privkey_sign_data(key->private_key, GNUTLS_DIG_SHA1, 0,
|
|
&datum, sign, &sign_len) &&
|
|
!sign_len)
|
|
{
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
/* Get the signature */
|
|
sign = malloc(sign_len);
|
|
if (!sign ||
|
|
gnutls_x509_privkey_sign_data(key->private_key, GNUTLS_DIG_SHA1, 0,
|
|
&datum,
|
|
sign, &sign_len))
|
|
{
|
|
if (!sign)
|
|
err = EET_ERROR_OUT_OF_MEMORY;
|
|
else
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
|
|
goto on_error;
|
|
}
|
|
#endif
|
|
|
|
/* Get the certificate length */
|
|
if (gnutls_x509_crt_export(key->certificate, GNUTLS_X509_FMT_DER, cert,
|
|
&cert_len) &&
|
|
!cert_len)
|
|
{
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
/* Get the certificate */
|
|
cert = malloc(cert_len);
|
|
if (!cert ||
|
|
gnutls_x509_crt_export(key->certificate, GNUTLS_X509_FMT_DER, cert,
|
|
&cert_len))
|
|
{
|
|
if (!cert)
|
|
err = EET_ERROR_OUT_OF_MEMORY;
|
|
else
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
|
|
goto on_error;
|
|
}
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
sign_len = EVP_PKEY_size(key->private_key);
|
|
sign = malloc(sign_len);
|
|
if (!sign)
|
|
{
|
|
err = EET_ERROR_OUT_OF_MEMORY;
|
|
goto on_error;
|
|
}
|
|
|
|
/* Do the signature. */
|
|
EVP_SignInit(&md_ctx, EVP_sha1());
|
|
EVP_SignUpdate(&md_ctx, data, st_buf.st_size);
|
|
err = EVP_SignFinal(&md_ctx,
|
|
sign,
|
|
(unsigned int *)&sign_len,
|
|
key->private_key);
|
|
if (err != 1)
|
|
{
|
|
ERR_print_errors_fp(stdout);
|
|
err = EET_ERROR_SIGNATURE_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
/* Give me the der (binary form for X509). */
|
|
cert_len = i2d_X509(key->certificate, &cert);
|
|
if (cert_len < 0)
|
|
{
|
|
ERR_print_errors_fp(stdout);
|
|
err = EET_ERROR_X509_ENCODING_FAILED;
|
|
goto on_error;
|
|
}
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
/* Append the signature at the end of the file. */
|
|
head[0] = (int)htonl ((unsigned int)EET_MAGIC_SIGN);
|
|
head[1] = (int)htonl ((unsigned int)sign_len);
|
|
head[2] = (int)htonl ((unsigned int)cert_len);
|
|
|
|
if (fwrite(head, sizeof(head), 1, fp) != 1)
|
|
{
|
|
err = EET_ERROR_WRITE_ERROR;
|
|
goto on_error;
|
|
}
|
|
|
|
if (fwrite(sign, sign_len, 1, fp) != 1)
|
|
{
|
|
err = EET_ERROR_WRITE_ERROR;
|
|
goto on_error;
|
|
}
|
|
|
|
if (fwrite(cert, cert_len, 1, fp) != 1)
|
|
{
|
|
err = EET_ERROR_WRITE_ERROR;
|
|
goto on_error;
|
|
}
|
|
|
|
on_error:
|
|
# ifdef HAVE_GNUTLS
|
|
if (cert)
|
|
free(cert);
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
if (cert)
|
|
OPENSSL_free(cert);
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
if (sign)
|
|
free(sign);
|
|
|
|
munmap(data, st_buf.st_size);
|
|
return err;
|
|
#else /* ifdef HAVE_SIGNATURE */
|
|
fp = NULL;
|
|
key = NULL;
|
|
return EET_ERROR_NOT_IMPLEMENTED;
|
|
#endif /* ifdef HAVE_SIGNATURE */
|
|
}
|
|
|
|
const void *
|
|
eet_identity_check(const void *data_base,
|
|
unsigned int data_length,
|
|
void **sha1,
|
|
int *sha1_length,
|
|
const void *signature_base,
|
|
unsigned int signature_length,
|
|
const void **raw_signature_base,
|
|
unsigned int *raw_signature_length,
|
|
int *x509_length)
|
|
{
|
|
#ifdef HAVE_SIGNATURE
|
|
const int *header = signature_base;
|
|
const unsigned char *sign;
|
|
const unsigned char *cert_der;
|
|
int sign_len;
|
|
int cert_len;
|
|
int magic;
|
|
|
|
/* At least the header size */
|
|
if (signature_length < sizeof(int) * 3)
|
|
return NULL;
|
|
|
|
/* Get the header */
|
|
magic = ntohl(header[0]);
|
|
sign_len = ntohl(header[1]);
|
|
cert_len = ntohl(header[2]);
|
|
|
|
/* Verify the header */
|
|
if (magic != EET_MAGIC_SIGN)
|
|
return NULL;
|
|
|
|
if (sign_len + cert_len + sizeof(int) * 3 > signature_length)
|
|
return NULL;
|
|
|
|
/* Update the signature and certificate pointer */
|
|
sign = (unsigned char *)signature_base + sizeof(int) * 3;
|
|
cert_der = sign + sign_len;
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
gnutls_x509_crt_t cert;
|
|
gnutls_datum_t datum;
|
|
gnutls_datum_t signature;
|
|
# if EET_USE_NEW_GNUTLS_API
|
|
# if EET_USE_NEW_PUBKEY_VERIFY_HASH
|
|
gnutls_pubkey_t pubkey;
|
|
gnutls_digest_algorithm_t hash_algo;
|
|
# endif
|
|
unsigned char *hash;
|
|
gcry_md_hd_t md;
|
|
int err;
|
|
# endif /* if EET_USE_NEW_GNUTLS_API */
|
|
|
|
/* Create an understanding certificate structure for gnutls */
|
|
datum.data = (void *)cert_der;
|
|
datum.size = cert_len;
|
|
gnutls_x509_crt_init(&cert);
|
|
gnutls_x509_crt_import(cert, &datum, GNUTLS_X509_FMT_DER);
|
|
|
|
signature.data = (void *)sign;
|
|
signature.size = sign_len;
|
|
|
|
/* Verify the signature */
|
|
# if EET_USE_NEW_GNUTLS_API
|
|
/*
|
|
I am waiting for my patch being accepted in GnuTLS release.
|
|
But we now have a way to prevent double computation of SHA1.
|
|
*/
|
|
err = gcry_md_open (&md, GCRY_MD_SHA1, 0);
|
|
if (err < 0)
|
|
return NULL;
|
|
|
|
gcry_md_write(md, data_base, data_length);
|
|
|
|
hash = gcry_md_read(md, GCRY_MD_SHA1);
|
|
if (!hash)
|
|
goto on_error;
|
|
|
|
datum.size = gcry_md_get_algo_dlen(GCRY_MD_SHA1);
|
|
datum.data = hash;
|
|
|
|
# ifdef EET_USE_NEW_PUBKEY_VERIFY_HASH
|
|
if (gnutls_pubkey_init(&pubkey) < 0)
|
|
goto on_error;
|
|
|
|
if (gnutls_pubkey_import_x509(pubkey, cert, 0) < 0)
|
|
goto on_error;
|
|
|
|
if (gnutls_pubkey_get_verify_algorithm(pubkey, &signature, &hash_algo) < 0)
|
|
goto on_error;
|
|
|
|
if (gnutls_pubkey_verify_hash(pubkey, 0, &datum, &signature) < 0)
|
|
goto on_error;
|
|
# else
|
|
if (!gnutls_x509_crt_verify_hash(cert, 0, &datum, &signature))
|
|
goto on_error;
|
|
# endif
|
|
|
|
if (sha1)
|
|
{
|
|
*sha1 = malloc(datum.size);
|
|
if (!*sha1) goto on_error;
|
|
|
|
memcpy(*sha1, hash, datum.size);
|
|
*sha1_length = datum.size;
|
|
}
|
|
|
|
gcry_md_close(md);
|
|
# else /* if EET_USE_NEW_GNUTLS_API */
|
|
datum.data = (void *)data_base;
|
|
datum.size = data_length;
|
|
|
|
if (!gnutls_x509_crt_verify_data(cert, 0, &datum, &signature))
|
|
return NULL;
|
|
|
|
if (sha1)
|
|
{
|
|
*sha1 = NULL;
|
|
*sha1_length = -1;
|
|
}
|
|
|
|
# endif /* if EET_USE_NEW_GNUTLS_API */
|
|
gnutls_x509_crt_deinit(cert);
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
const unsigned char *tmp;
|
|
EVP_PKEY *pkey;
|
|
X509 *x509;
|
|
EVP_MD_CTX md_ctx;
|
|
int err;
|
|
|
|
/* Strange but d2i_X509 seems to put 0 all over the place. */
|
|
tmp = alloca(cert_len);
|
|
memcpy((char *)tmp, cert_der, cert_len);
|
|
x509 = d2i_X509(NULL, &tmp, cert_len);
|
|
if (!x509)
|
|
return NULL;
|
|
|
|
/* Get public key - eay */
|
|
pkey = X509_get_pubkey(x509);
|
|
if (!pkey)
|
|
{
|
|
X509_free(x509);
|
|
return NULL;
|
|
}
|
|
|
|
/* Verify the signature */
|
|
EVP_VerifyInit(&md_ctx, EVP_sha1());
|
|
EVP_VerifyUpdate(&md_ctx, data_base, data_length);
|
|
err = EVP_VerifyFinal(&md_ctx, sign, sign_len, pkey);
|
|
|
|
X509_free(x509);
|
|
EVP_PKEY_free(pkey);
|
|
|
|
if (sha1)
|
|
{
|
|
*sha1 = NULL;
|
|
*sha1_length = -1;
|
|
}
|
|
|
|
if (err != 1)
|
|
return NULL;
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
if (x509_length)
|
|
*x509_length = cert_len;
|
|
|
|
if (raw_signature_base)
|
|
*raw_signature_base = sign;
|
|
|
|
if (raw_signature_length)
|
|
*raw_signature_length = sign_len;
|
|
|
|
return cert_der;
|
|
# ifdef HAVE_GNUTLS
|
|
# if EET_USE_NEW_GNUTLS_API
|
|
on_error:
|
|
gcry_md_close(md);
|
|
return NULL;
|
|
# endif
|
|
# endif
|
|
#else /* ifdef HAVE_SIGNATURE */
|
|
data_base = NULL;
|
|
data_length = 0;
|
|
sha1 = NULL;
|
|
sha1_length = NULL;
|
|
signature_base = NULL;
|
|
signature_length = 0;
|
|
raw_signature_base = NULL;
|
|
raw_signature_length = NULL;
|
|
x509_length = NULL;
|
|
return NULL;
|
|
#endif /* ifdef HAVE_SIGNATURE */
|
|
}
|
|
|
|
EAPI void
|
|
eet_identity_certificate_print(const unsigned char *certificate,
|
|
int der_length,
|
|
FILE *out)
|
|
{
|
|
#ifdef HAVE_SIGNATURE
|
|
if (!certificate || !out || der_length <= 0)
|
|
{
|
|
ERR("No certificate provided.");
|
|
return;
|
|
}
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
gnutls_datum_t datum;
|
|
gnutls_x509_crt_t cert;
|
|
|
|
/* Create an understanding certificate structure for gnutls */
|
|
datum.data = (void *)certificate;
|
|
datum.size = der_length;
|
|
if (gnutls_x509_crt_init(&cert))
|
|
goto on_error;
|
|
|
|
if (gnutls_x509_crt_import(cert, &datum, GNUTLS_X509_FMT_DER))
|
|
goto on_error;
|
|
|
|
/* Pretty print the certificate */
|
|
datum.data = NULL;
|
|
datum.size = 0;
|
|
if (gnutls_x509_crt_print(cert, GNUTLS_X509_CRT_FULL, &datum))
|
|
goto on_error;
|
|
|
|
INF("Public certificate :");
|
|
INF("%s", datum.data);
|
|
|
|
on_error:
|
|
if (datum.data)
|
|
gnutls_free(datum.data);
|
|
|
|
gnutls_x509_crt_deinit(cert);
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
const unsigned char *tmp;
|
|
X509 *x509;
|
|
|
|
/* Strange but d2i_X509 seems to put 0 all over the place. */
|
|
tmp = alloca(der_length);
|
|
memcpy((char *)tmp, certificate, der_length);
|
|
x509 = d2i_X509(NULL, &tmp, der_length);
|
|
if (!x509)
|
|
{
|
|
INF("Not a valid certificate.");
|
|
return;
|
|
}
|
|
|
|
INF("Public certificate :");
|
|
X509_print_fp(out, x509);
|
|
|
|
X509_free(x509);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
#else /* ifdef HAVE_SIGNATURE */
|
|
certificate = NULL;
|
|
der_length = 0;
|
|
out = NULL;
|
|
ERR("You need to compile signature support in EET.");
|
|
#endif /* ifdef HAVE_SIGNATURE */
|
|
}
|
|
|
|
Eet_Error
|
|
eet_cipher(const void *data,
|
|
unsigned int size,
|
|
const char *key,
|
|
unsigned int length,
|
|
void **result,
|
|
unsigned int *result_length)
|
|
{
|
|
#ifdef HAVE_CIPHER
|
|
/* Cipher declarations */
|
|
unsigned int *ret = NULL;
|
|
unsigned char iv[MAX_IV_LEN];
|
|
unsigned char ik[MAX_KEY_LEN];
|
|
unsigned char key_material[MAX_IV_LEN + MAX_KEY_LEN];
|
|
unsigned int salt;
|
|
unsigned int tmp = 0;
|
|
int crypted_length;
|
|
int opened = 0;
|
|
# ifdef HAVE_GNUTLS
|
|
/* Gcrypt declarations */
|
|
gcry_error_t err = 0;
|
|
gcry_cipher_hd_t cipher;
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
/* Openssl declarations*/
|
|
EVP_CIPHER_CTX ctx;
|
|
unsigned int *buffer = NULL;
|
|
int tmp_len;
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
/* Gcrypt salt generation */
|
|
gcry_create_nonce((unsigned char *)&salt, sizeof(salt));
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
/* Openssl salt generation */
|
|
if (!RAND_bytes((unsigned char *)&salt, sizeof (unsigned int)))
|
|
return EET_ERROR_PRNG_NOT_SEEDED;
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
eet_pbkdf2_sha1(key,
|
|
length,
|
|
(unsigned char *)&salt,
|
|
sizeof(unsigned int),
|
|
2048,
|
|
key_material,
|
|
MAX_KEY_LEN + MAX_IV_LEN);
|
|
|
|
memcpy(iv, key_material, MAX_IV_LEN);
|
|
memcpy(ik, key_material + MAX_IV_LEN, MAX_KEY_LEN);
|
|
|
|
memset(key_material, 0, sizeof (key_material));
|
|
|
|
crypted_length = ((((size + sizeof (unsigned int)) >> 5) + 1) << 5);
|
|
ret = malloc(crypted_length + sizeof(unsigned int));
|
|
if (!ret)
|
|
{
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
memset(&salt, 0, sizeof (salt));
|
|
return EET_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
*ret = salt;
|
|
memset(&salt, 0, sizeof (salt));
|
|
tmp = htonl(size);
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
*(ret + 1) = tmp;
|
|
memcpy(ret + 2, data, size);
|
|
|
|
/* Gcrypt create the corresponding cipher
|
|
AES with a 256 bit key, Cipher Block Chaining mode */
|
|
err = gcry_cipher_open(&cipher, GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC, 0);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
opened = 1;
|
|
err = gcry_cipher_setiv(cipher, iv, MAX_IV_LEN);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
err = gcry_cipher_setkey(cipher, ik, MAX_KEY_LEN);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
/* Gcrypt encrypt */
|
|
err = gcry_cipher_encrypt(cipher,
|
|
(unsigned char *)(ret + 1),
|
|
crypted_length,
|
|
NULL,
|
|
0);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
/* Gcrypt close the cipher */
|
|
gcry_cipher_close(cipher);
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
buffer = malloc(crypted_length);
|
|
if (!buffer) goto on_error;
|
|
*buffer = tmp;
|
|
|
|
memcpy(buffer + 1, data, size);
|
|
|
|
/* Openssl create the corresponding cipher
|
|
AES with a 256 bit key, Cipher Block Chaining mode */
|
|
EVP_CIPHER_CTX_init(&ctx);
|
|
if (!EVP_EncryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, ik, iv))
|
|
goto on_error;
|
|
|
|
opened = 1;
|
|
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
/* Openssl encrypt */
|
|
if (!EVP_EncryptUpdate(&ctx, (unsigned char *)(ret + 1), &tmp_len,
|
|
(unsigned char *)buffer,
|
|
size + sizeof(unsigned int)))
|
|
goto on_error;
|
|
|
|
/* Openssl close the cipher */
|
|
if (!EVP_EncryptFinal_ex(&ctx, ((unsigned char *)(ret + 1)) + tmp_len,
|
|
&tmp_len))
|
|
goto on_error;
|
|
|
|
EVP_CIPHER_CTX_cleanup(&ctx);
|
|
free(buffer);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
/* Set return values */
|
|
if (result_length)
|
|
*result_length = crypted_length + sizeof(unsigned int);
|
|
|
|
if (result)
|
|
*result = ret;
|
|
else
|
|
free(ret);
|
|
|
|
return EET_ERROR_NONE;
|
|
|
|
on_error:
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
/* Gcrypt error */
|
|
if (opened)
|
|
gcry_cipher_close(cipher);
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
/* Openssl error */
|
|
if (opened)
|
|
EVP_CIPHER_CTX_cleanup(&ctx);
|
|
|
|
free(buffer);
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
/* General error */
|
|
free(ret);
|
|
if (result)
|
|
*result = NULL;
|
|
|
|
if (result_length)
|
|
*result_length = 0;
|
|
|
|
return EET_ERROR_ENCRYPT_FAILED;
|
|
#else /* ifdef HAVE_CIPHER */
|
|
/* Cipher not supported */
|
|
(void)data;
|
|
(void)size;
|
|
(void)key;
|
|
(void)length;
|
|
(void)result;
|
|
(void)result_length;
|
|
return EET_ERROR_NOT_IMPLEMENTED;
|
|
#endif /* ifdef HAVE_CIPHER */
|
|
}
|
|
|
|
Eet_Error
|
|
eet_decipher(const void *data,
|
|
unsigned int size,
|
|
const char *key,
|
|
unsigned int length,
|
|
void **result,
|
|
unsigned int *result_length)
|
|
{
|
|
#ifdef HAVE_CIPHER
|
|
const unsigned int *over = data;
|
|
unsigned int *ret = NULL;
|
|
unsigned char ik[MAX_KEY_LEN];
|
|
unsigned char iv[MAX_IV_LEN];
|
|
unsigned char key_material[MAX_KEY_LEN + MAX_IV_LEN];
|
|
unsigned int salt;
|
|
int tmp_len;
|
|
int tmp = 0;
|
|
|
|
/* At least the salt and an AES block */
|
|
if (size < sizeof(unsigned int) + 16)
|
|
return EET_ERROR_BAD_OBJECT;
|
|
|
|
/* Get the salt */
|
|
salt = *over;
|
|
|
|
/* Generate the iv and the key with the salt */
|
|
eet_pbkdf2_sha1(key, length, (unsigned char *)&salt,
|
|
sizeof(unsigned int), 2048, key_material,
|
|
MAX_KEY_LEN + MAX_IV_LEN);
|
|
|
|
memcpy(iv, key_material, MAX_IV_LEN);
|
|
memcpy(ik, key_material + MAX_IV_LEN, MAX_KEY_LEN);
|
|
|
|
memset(key_material, 0, sizeof (key_material));
|
|
memset(&salt, 0, sizeof (salt));
|
|
|
|
/* Align to AES block size if size is not align */
|
|
tmp_len = size - sizeof (unsigned int);
|
|
if ((tmp_len & 0x1F) != 0)
|
|
goto on_error;
|
|
|
|
ret = malloc(tmp_len);
|
|
if (!ret)
|
|
goto on_error;
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
gcry_error_t err = 0;
|
|
gcry_cipher_hd_t cipher;
|
|
|
|
/* Gcrypt create the corresponding cipher */
|
|
err = gcry_cipher_open(&cipher, GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC, 0);
|
|
if (err)
|
|
return EET_ERROR_DECRYPT_FAILED;
|
|
|
|
err = gcry_cipher_setiv(cipher, iv, MAX_IV_LEN);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
err = gcry_cipher_setkey(cipher, ik, MAX_KEY_LEN);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
/* Gcrypt decrypt */
|
|
err = gcry_cipher_decrypt(cipher, ret, tmp_len,
|
|
((unsigned int *)data) + 1, tmp_len);
|
|
if (err)
|
|
goto on_error;
|
|
|
|
/* Gcrypt close the cipher */
|
|
gcry_cipher_close(cipher);
|
|
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
EVP_CIPHER_CTX ctx;
|
|
int opened = 0;
|
|
|
|
/* Openssl create the corresponding cipher */
|
|
EVP_CIPHER_CTX_init(&ctx);
|
|
opened = 1;
|
|
|
|
if (!EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, ik, iv))
|
|
goto on_error;
|
|
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
/* Openssl decrypt */
|
|
if (!EVP_DecryptUpdate(&ctx, (unsigned char *)ret, &tmp,
|
|
(unsigned char *)(over + 1), tmp_len))
|
|
goto on_error;
|
|
|
|
/* Openssl close the cipher*/
|
|
EVP_CIPHER_CTX_cleanup(&ctx);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
/* Get the decrypted data size */
|
|
tmp = *ret;
|
|
tmp = ntohl(tmp);
|
|
if (tmp > tmp_len || tmp <= 0)
|
|
goto on_error;
|
|
|
|
/* Update the return values */
|
|
if (result_length)
|
|
*result_length = tmp;
|
|
|
|
if (result)
|
|
{
|
|
*result = NULL;
|
|
*result = malloc(tmp);
|
|
if (!*result)
|
|
goto on_error;
|
|
|
|
memcpy(*result, ret + 1, tmp);
|
|
}
|
|
|
|
free(ret);
|
|
|
|
return EET_ERROR_NONE;
|
|
|
|
on_error:
|
|
memset(iv, 0, sizeof (iv));
|
|
memset(ik, 0, sizeof (ik));
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
# else
|
|
if (opened)
|
|
EVP_CIPHER_CTX_cleanup(&ctx);
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
if (result)
|
|
*result = NULL;
|
|
|
|
if (result_length)
|
|
*result_length = 0;
|
|
|
|
if (ret)
|
|
free(ret);
|
|
|
|
return EET_ERROR_DECRYPT_FAILED;
|
|
#else /* ifdef HAVE_CIPHER */
|
|
(void)data;
|
|
(void)size;
|
|
(void)key;
|
|
(void)length;
|
|
(void)result;
|
|
(void)result_length;
|
|
return EET_ERROR_NOT_IMPLEMENTED;
|
|
#endif /* ifdef HAVE_CIPHER */
|
|
}
|
|
|
|
#ifdef HAVE_CIPHER
|
|
# ifdef HAVE_GNUTLS
|
|
static Eet_Error
|
|
eet_hmac_sha1(const void *key,
|
|
size_t key_len,
|
|
const void *data,
|
|
size_t data_len,
|
|
unsigned char *res)
|
|
{
|
|
size_t hlen = gcry_md_get_algo_dlen (GCRY_MD_SHA1);
|
|
gcry_md_hd_t mdh;
|
|
unsigned char *hash;
|
|
gpg_error_t err;
|
|
|
|
err = gcry_md_open(&mdh, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC);
|
|
if (err != GPG_ERR_NO_ERROR)
|
|
return 1;
|
|
|
|
err = gcry_md_setkey(mdh, key, key_len);
|
|
if (err != GPG_ERR_NO_ERROR)
|
|
{
|
|
gcry_md_close(mdh);
|
|
return 1;
|
|
}
|
|
|
|
gcry_md_write(mdh, data, data_len);
|
|
|
|
hash = gcry_md_read(mdh, GCRY_MD_SHA1);
|
|
if (!hash)
|
|
{
|
|
gcry_md_close(mdh);
|
|
return 1;
|
|
}
|
|
|
|
memcpy(res, hash, hlen);
|
|
|
|
gcry_md_close(mdh);
|
|
|
|
return 0;
|
|
}
|
|
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
static Eet_Error
|
|
eet_pbkdf2_sha1(const char *key,
|
|
int key_len,
|
|
const unsigned char *salt,
|
|
unsigned int salt_len,
|
|
int iter,
|
|
unsigned char *res,
|
|
int res_len)
|
|
{
|
|
unsigned char digest[20];
|
|
unsigned char tab[4];
|
|
unsigned char *p = res;
|
|
unsigned char *buf;
|
|
unsigned long i;
|
|
int digest_len = 20;
|
|
int len = res_len;
|
|
int tmp_len;
|
|
int j, k;
|
|
# ifdef HAVE_GNUTLS
|
|
# else
|
|
HMAC_CTX hctx;
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
|
|
buf = alloca(salt_len + 4);
|
|
if (!buf)
|
|
return 1;
|
|
|
|
for (i = 1; len; len -= tmp_len, p += tmp_len, i++)
|
|
{
|
|
if (len > digest_len)
|
|
tmp_len = digest_len;
|
|
else
|
|
tmp_len = len;
|
|
|
|
tab[0] = (unsigned char)(i & 0xff000000) >> 24;
|
|
tab[1] = (unsigned char)(i & 0x00ff0000) >> 16;
|
|
tab[2] = (unsigned char)(i & 0x0000ff00) >> 8;
|
|
tab[3] = (unsigned char)(i & 0x000000ff) >> 0;
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
memcpy(buf, salt, salt_len);
|
|
memcpy(buf + salt_len, tab, 4);
|
|
eet_hmac_sha1(key, key_len, buf, salt_len + 4, digest);
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
HMAC_Init(&hctx, key, key_len, EVP_sha1());
|
|
HMAC_Update(&hctx, salt, salt_len);
|
|
HMAC_Update(&hctx, tab, 4);
|
|
HMAC_Final(&hctx, digest, NULL);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
memcpy(p, digest, tmp_len);
|
|
|
|
for (j = 1; j < iter; j++)
|
|
{
|
|
# ifdef HAVE_GNUTLS
|
|
eet_hmac_sha1(key, key_len, digest, 20, digest);
|
|
# else /* ifdef HAVE_GNUTLS */
|
|
HMAC(EVP_sha1(), key, key_len, digest, 20, digest, NULL);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
for (k = 0; k < tmp_len; k++)
|
|
p[k] ^= digest[k];
|
|
}
|
|
}
|
|
|
|
# ifdef HAVE_GNUTLS
|
|
# else
|
|
HMAC_cleanup(&hctx);
|
|
# endif /* ifdef HAVE_GNUTLS */
|
|
return 0;
|
|
}
|
|
|
|
#endif /* ifdef HAVE_CIPHER */
|