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authorMichael Biebl <biebl@debian.org>2019-07-31 10:51:42 +0200
committerMichael Biebl <biebl@debian.org>2019-07-31 10:51:42 +0200
commit2e5fa45ddfbb5cffa1e78221f1cea706e2f298af (patch)
tree86f69d36c56de3074280456eddc854a780b8e04b /libnm-util/crypto.c
parent85563b7fc7ec2cd21e38debb9b28db342e2e8e7c (diff)
New upstream version 1.19.90 upstream/1.19.90
Diffstat (limited to 'libnm-util/crypto.c')
-rw-r--r--libnm-util/crypto.c749
1 files changed, 0 insertions, 749 deletions
diff --git a/libnm-util/crypto.c b/libnm-util/crypto.c
deleted file mode 100644
index 5d1a37ff..00000000
--- a/libnm-util/crypto.c
+++ /dev/null
@@ -1,749 +0,0 @@
-/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
-
-/*
- * Dan Williams <dcbw@redhat.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301 USA.
- *
- * Copyright 2007 - 2011 Red Hat, Inc.
- */
-
-#include "nm-default.h"
-
-#include <string.h>
-#include <strings.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include "crypto.h"
-
-GQuark
-_nm_crypto_error_quark (void)
-{
-	static GQuark quark;
-
-	if (G_UNLIKELY (!quark))
-		quark = g_quark_from_static_string ("nm-crypto-error-quark");
-	return quark;
-}
-
-#define PEM_RSA_KEY_BEGIN "-----BEGIN RSA PRIVATE KEY-----"
-#define PEM_RSA_KEY_END   "-----END RSA PRIVATE KEY-----"
-
-#define PEM_DSA_KEY_BEGIN "-----BEGIN DSA PRIVATE KEY-----"
-#define PEM_DSA_KEY_END   "-----END DSA PRIVATE KEY-----"
-
-#define PEM_CERT_BEGIN    "-----BEGIN CERTIFICATE-----"
-#define PEM_CERT_END      "-----END CERTIFICATE-----"
-
-#define PEM_PKCS8_ENC_KEY_BEGIN "-----BEGIN ENCRYPTED PRIVATE KEY-----"
-#define PEM_PKCS8_ENC_KEY_END   "-----END ENCRYPTED PRIVATE KEY-----"
-
-#define PEM_PKCS8_DEC_KEY_BEGIN "-----BEGIN PRIVATE KEY-----"
-#define PEM_PKCS8_DEC_KEY_END   "-----END PRIVATE KEY-----"
-
-static gboolean
-find_tag (const char *tag,
-          const GByteArray *array,
-          gsize start_at,
-          gsize *out_pos)
-{
-	gsize i, taglen;
-	gsize len = array->len - start_at;
-
-	g_return_val_if_fail (out_pos != NULL, FALSE);
-
-	taglen = strlen (tag);
-	if (len >= taglen) {
-		for (i = 0; i < len - taglen + 1; i++) {
-			if (memcmp (array->data + start_at + i, tag, taglen) == 0) {
-				*out_pos = start_at + i;
-				return TRUE;
-			}
-		}
-	}
-	return FALSE;
-}
-
-#define DEK_INFO_TAG "DEK-Info: "
-#define PROC_TYPE_TAG "Proc-Type: "
-
-static GByteArray *
-parse_old_openssl_key_file (const GByteArray *contents,
-                            int key_type,
-                            char **out_cipher,
-                            char **out_iv,
-                            GError **error)
-{
-	GByteArray *bindata = NULL;
-	char **lines = NULL;
-	char **ln = NULL;
-	gsize start = 0, end = 0;
-	GString *str = NULL;
-	int enc_tags = 0;
-	char *iv = NULL;
-	char *cipher = NULL;
-	unsigned char *tmp = NULL;
-	gsize tmp_len = 0;
-	const char *start_tag;
-	const char *end_tag;
-	guint8 save_end = 0;
-
-	switch (key_type) {
-	case NM_CRYPTO_KEY_TYPE_RSA:
-		start_tag = PEM_RSA_KEY_BEGIN;
-		end_tag = PEM_RSA_KEY_END;
-		break;
-	case NM_CRYPTO_KEY_TYPE_DSA:
-		start_tag = PEM_DSA_KEY_BEGIN;
-		end_tag = PEM_DSA_KEY_END;
-		break;
-	default:
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_UNKNOWN_KEY_TYPE,
-		             "Unknown key type %d",
-		             key_type);
-		g_assert_not_reached ();
-		return NULL;
-	}
-
-	if (!find_tag (start_tag, contents, 0, &start))
-		goto parse_error;
-
-	start += strlen (start_tag);
-	if (!find_tag (end_tag, contents, start, &end)) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		             _("PEM key file had no end tag '%s'."),
-		             end_tag);
-		goto parse_error;
-	}
-
-	save_end = contents->data[end];
-	contents->data[end] = '\0';
-	lines = g_strsplit ((const char *) (contents->data + start), "\n", 0);
-	contents->data[end] = save_end;
-
-	if (!lines || g_strv_length (lines) <= 1) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		             _("Doesn't look like a PEM private key file."));
-		goto parse_error;
-	}
-
-	str = g_string_new_len (NULL, end - start);
-	for (ln = lines; *ln; ln++) {
-		char *p = *ln;
-
-		/* Chug leading spaces */
-		p = g_strstrip (p);
-		if (!*p)
-			continue;
-
-		if (!strncmp (p, PROC_TYPE_TAG, strlen (PROC_TYPE_TAG))) {
-			if (enc_tags++ != 0) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             _("Malformed PEM file: Proc-Type was not first tag."));
-				goto parse_error;
-			}
-
-			p += strlen (PROC_TYPE_TAG);
-			if (strcmp (p, "4,ENCRYPTED")) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             _("Malformed PEM file: unknown Proc-Type tag '%s'."),
-				             p);
-				goto parse_error;
-			}
-		} else if (!strncmp (p, DEK_INFO_TAG, strlen (DEK_INFO_TAG))) {
-			char *comma;
-
-			if (enc_tags++ != 1) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             _("Malformed PEM file: DEK-Info was not the second tag."));
-				goto parse_error;
-			}
-
-			p += strlen (DEK_INFO_TAG);
-
-			/* Grab the IV first */
-			comma = strchr (p, ',');
-			if (!comma || (*(comma + 1) == '\0')) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             _("Malformed PEM file: no IV found in DEK-Info tag."));
-				goto parse_error;
-			}
-			*comma++ = '\0';
-			if (!g_ascii_isxdigit (*comma)) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             _("Malformed PEM file: invalid format of IV in DEK-Info tag."));
-				goto parse_error;
-			}
-			iv = g_strdup (comma);
-
-			/* Get the private key cipher */
-			if (!strcasecmp (p, "DES-EDE3-CBC")) {
-				cipher = g_strdup (p);
-			} else if (!strcasecmp (p, "DES-CBC")) {
-				cipher = g_strdup (p);
-			} else if (!strcasecmp (p, "AES-128-CBC")) {
-				cipher = g_strdup (p);
-			} else {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_UNKNOWN_KEY_TYPE,
-				             _("Malformed PEM file: unknown private key cipher '%s'."),
-				             p);
-				goto parse_error;
-			}
-		} else {
-			if ((enc_tags != 0) && (enc_tags != 2)) {
-				g_set_error (error, NM_CRYPTO_ERROR,
-				             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-				             "Malformed PEM file: both Proc-Type and DEK-Info tags are required.");
-				goto parse_error;
-			}
-			g_string_append (str, p);
-		}
-	}
-
-	tmp = g_base64_decode (str->str, &tmp_len);
-	if (tmp == NULL || !tmp_len) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_DECODE_FAILED,
-		             _("Could not decode private key."));
-		goto parse_error;
-	}
-	g_string_free (str, TRUE);
-
-	if (lines)
-		g_strfreev (lines);
-
-	bindata = g_byte_array_sized_new (tmp_len);
-	g_byte_array_append (bindata, tmp, tmp_len);
-	g_free (tmp);
-
-	*out_iv = iv;
-	*out_cipher = cipher;
-	return bindata;
-
-parse_error:
-	g_free (tmp);
-	g_free (cipher);
-	g_free (iv);
-	if (str)
-		g_string_free (str, TRUE);
-	if (lines)
-		g_strfreev (lines);
-	return NULL;
-}
-
-static GByteArray *
-parse_pkcs8_key_file (const GByteArray *contents,
-                      gboolean *out_encrypted,
-                      GError **error)
-{
-	GByteArray *key = NULL;
-	gsize start = 0, end = 0;
-	unsigned char *der = NULL;
-	guint8 save_end;
-	gsize length = 0;
-	const char *start_tag = NULL, *end_tag = NULL;
-	gboolean encrypted = FALSE;
-
-	/* Try encrypted first, decrypted next */
-	if (find_tag (PEM_PKCS8_ENC_KEY_BEGIN, contents, 0, &start)) {
-		start_tag = PEM_PKCS8_ENC_KEY_BEGIN;
-		end_tag = PEM_PKCS8_ENC_KEY_END;
-		encrypted = TRUE;
-	} else if (find_tag (PEM_PKCS8_DEC_KEY_BEGIN, contents, 0, &start)) {
-		start_tag = PEM_PKCS8_DEC_KEY_BEGIN;
-		end_tag = PEM_PKCS8_DEC_KEY_END;
-		encrypted = FALSE;
-	} else {
-		g_set_error_literal (error, NM_CRYPTO_ERROR,
-		                     NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		                     _("Failed to find expected PKCS#8 start tag."));
-		return NULL;
-	}
-
-	start += strlen (start_tag);
-	if (!find_tag (end_tag, contents, start, &end)) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		             _("Failed to find expected PKCS#8 end tag '%s'."),
-		             end_tag);
-		return NULL;
-	}
-
-	/* g_base64_decode() wants a NULL-terminated string */
-	save_end = contents->data[end];
-	contents->data[end] = '\0';
-	der = g_base64_decode ((const char *) (contents->data + start), &length);
-	contents->data[end] = save_end;
-
-	if (der && length) {
-		key = g_byte_array_sized_new (length);
-		g_byte_array_append (key, der, length);
-		g_assert (key->len == length);
-		*out_encrypted = encrypted;
-	} else {
-		g_set_error_literal (error, NM_CRYPTO_ERROR,
-		                     NM_CRYPTO_ERR_DECODE_FAILED,
-		                     _("Failed to decode PKCS#8 private key."));
-	}
-
-	g_free (der);
-	return key;
-}
-
-static GByteArray *
-file_to_g_byte_array (const char *filename, GError **error)
-{
-	char *contents;
-	GByteArray *array = NULL;
-	gsize length = 0;
-
-	if (g_file_get_contents (filename, &contents, &length, error)) {
-		array = g_byte_array_sized_new (length);
-		g_byte_array_append (array, (guint8 *) contents, length);
-		g_assert (array->len == length);
-		g_free (contents);
-	}
-	return array;
-}
-
-/*
- * Convert a hex string into bytes.
- */
-static char *
-convert_iv (const char *src,
-            gsize *out_len,
-            GError **error)
-{
-	int num;
-	int i;
-	char conv[3];
-	char *c;
-
-	g_return_val_if_fail (src != NULL, NULL);
-
-	num = strlen (src);
-	if (num % 2) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_RAW_IV_INVALID,
-		             _("IV must be an even number of bytes in length."));
-		return NULL;
-	}
-
-	num /= 2;
-	c = g_malloc0 (num + 1);
-
-	conv[2] = '\0';
-	for (i = 0; i < num; i++) {
-		conv[0] = src[(i * 2)];
-		conv[1] = src[(i * 2) + 1];
-		if (!g_ascii_isxdigit (conv[0]) || !g_ascii_isxdigit (conv[1])) {
-			g_set_error (error, NM_CRYPTO_ERROR,
-			             NM_CRYPTO_ERR_RAW_IV_INVALID,
-			             _("IV contains non-hexadecimal digits."));
-			goto error;
-		}
-
-		c[i] = strtol(conv, NULL, 16);
-	}
-	*out_len = num;
-	return c;
-
-error:
-	g_free (c);
-	return NULL;
-}
-
-static char *
-make_des_aes_key (const char *cipher,
-                  const char *salt,
-                  const gsize salt_len,
-                  const char *password,
-                  gsize *out_len,
-                  GError **error)
-{
-	char *key;
-	guint32 digest_len;
-
-	g_return_val_if_fail (cipher != NULL, NULL);
-	g_return_val_if_fail (salt != NULL, NULL);
-	g_return_val_if_fail (salt_len >= 8, NULL);
-	g_return_val_if_fail (password != NULL, NULL);
-	g_return_val_if_fail (out_len != NULL, NULL);
-
-	if (!strcmp (cipher, "DES-EDE3-CBC"))
-		digest_len = 24;
-	else if (!strcmp (cipher, "DES-CBC"))
-		digest_len = 8;
-	else if (!strcmp (cipher, "AES-128-CBC"))
-		digest_len = 16;
-	else {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_UNKNOWN_CIPHER,
-		             _("Private key cipher '%s' was unknown."),
-		             cipher);
-		return NULL;
-	}
-
-	if (password[0] == '\0')
-		return NULL;
-
-	key = g_malloc0 (digest_len + 1);
-
-	if (!crypto_md5_hash (salt,
-	                      salt_len,
-	                      password,
-	                      strlen (password),
-	                      key,
-	                      digest_len,
-	                      error))
-		goto error;
-
-	*out_len = digest_len;
-	return key;
-
-error:
-	if (key) {
-		/* Don't leak stale key material */
-		memset (key, 0, digest_len);
-		g_free (key);
-	}
-	return NULL;
-}
-
-static GByteArray *
-decrypt_key (const char *cipher,
-             int key_type,
-             GByteArray *data,
-             const char *iv,
-             const char *password,
-             GError **error)
-{
-	char *bin_iv = NULL;
-	gsize bin_iv_len = 0;
-	char *key = NULL;
-	gsize key_len = 0;
-	char *output = NULL;
-	gsize decrypted_len = 0;
-	GByteArray *decrypted = NULL;
-
-	g_return_val_if_fail (password != NULL, NULL);
-
-	bin_iv = convert_iv (iv, &bin_iv_len, error);
-	if (!bin_iv)
-		return NULL;
-
-	/* Convert the password and IV into a DES or AES key */
-	key = make_des_aes_key (cipher, bin_iv, bin_iv_len, password, &key_len, error);
-	if (!key || !key_len)
-		goto out;
-
-	output = crypto_decrypt (cipher, key_type,
-	                         data,
-	                         bin_iv, bin_iv_len,
-	                         key, key_len,
-	                         &decrypted_len,
-	                         error);
-	if (output && decrypted_len) {
-		decrypted = g_byte_array_sized_new (decrypted_len);
-		g_byte_array_append (decrypted, (guint8 *) output, decrypted_len);
-	}
-
-out:
-	/* Don't leak stale key material */
-	if (key)
-		memset (key, 0, key_len);
-	g_free (output);
-	g_free (key);
-	g_free (bin_iv);
-
-	return decrypted;
-}
-
-GByteArray *
-crypto_decrypt_private_key_data (const GByteArray *contents,
-                                 const char *password,
-                                 NMCryptoKeyType *out_key_type,
-                                 GError **error)
-{
-	GByteArray *decrypted = NULL;
-	NMCryptoKeyType key_type = NM_CRYPTO_KEY_TYPE_RSA;
-	GByteArray *data;
-	char *iv = NULL;
-	char *cipher = NULL;
-
-	g_return_val_if_fail (contents != NULL, NULL);
-	if (out_key_type)
-		g_return_val_if_fail (*out_key_type == NM_CRYPTO_KEY_TYPE_UNKNOWN, NULL);
-
-	/* OpenSSL non-standard legacy PEM files */
-
-	/* Try RSA keys first */
-	data = parse_old_openssl_key_file (contents, key_type, &cipher, &iv, error);
-	if (!data) {
-		g_clear_error (error);
-
-		/* DSA next */
-		key_type = NM_CRYPTO_KEY_TYPE_DSA;
-		data = parse_old_openssl_key_file (contents, key_type, &cipher, &iv, error);
-		if (!data) {
-			g_clear_error (error);
-			g_set_error (error, NM_CRYPTO_ERROR,
-			             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-			             _("Unable to determine private key type."));
-		}
-	}
-
-	if (data) {
-		/* return the key type even if decryption failed */
-		if (out_key_type)
-			*out_key_type = key_type;
-
-		if (password) {
-			decrypted = decrypt_key (cipher,
-			                         key_type,
-			                         data,
-			                         iv,
-			                         password,
-			                         error);
-		}
-		g_byte_array_free (data, TRUE);
-	}
-
-	g_free (cipher);
-	g_free (iv);
-
-	return decrypted;
-}
-
-GByteArray *
-crypto_decrypt_private_key (const char *file,
-                            const char *password,
-                            NMCryptoKeyType *out_key_type,
-                            GError **error)
-{
-	GByteArray *contents;
-	GByteArray *key = NULL;
-
-	contents = file_to_g_byte_array (file, error);
-	if (contents) {
-		key = crypto_decrypt_private_key_data (contents, password, out_key_type, error);
-		g_byte_array_free (contents, TRUE);
-	}
-	return key;
-}
-
-static GByteArray *
-extract_pem_cert_data (GByteArray *contents, GError **error)
-{
-	GByteArray *cert = NULL;
-	gsize start = 0, end = 0;
-	unsigned char *der = NULL;
-	guint8 save_end;
-	gsize length = 0;
-
-	if (!find_tag (PEM_CERT_BEGIN, contents, 0, &start)) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		             _("PEM certificate had no start tag '%s'."),
-		             PEM_CERT_BEGIN);
-		goto done;
-	}
-
-	start += strlen (PEM_CERT_BEGIN);
-	if (!find_tag (PEM_CERT_END, contents, start, &end)) {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_FILE_FORMAT_INVALID,
-		             _("PEM certificate had no end tag '%s'."),
-		             PEM_CERT_END);
-		goto done;
-	}
-
-	/* g_base64_decode() wants a NULL-terminated string */
-	save_end = contents->data[end];
-	contents->data[end] = '\0';
-	der = g_base64_decode ((const char *) (contents->data + start), &length);
-	contents->data[end] = save_end;
-
-	if (der && length) {
-		cert = g_byte_array_sized_new (length);
-		g_byte_array_append (cert, der, length);
-		g_assert (cert->len == length);
-	} else {
-		g_set_error (error, NM_CRYPTO_ERROR,
-		             NM_CRYPTO_ERR_DECODE_FAILED,
-		             _("Failed to decode certificate."));
-	}
-
-done:
-	g_free (der);
-	return cert;
-}
-
-GByteArray *
-crypto_load_and_verify_certificate (const char *file,
-                                    NMCryptoFileFormat *out_file_format,
-                                    GError **error)
-{
-	GByteArray *array, *contents;
-
-	g_return_val_if_fail (file != NULL, NULL);
-	g_return_val_if_fail (out_file_format != NULL, NULL);
-	g_return_val_if_fail (*out_file_format == NM_CRYPTO_FILE_FORMAT_UNKNOWN, NULL);
-
-	contents = file_to_g_byte_array (file, error);
-	if (!contents)
-		return NULL;
-
-	/* Check for PKCS#12 */
-	if (crypto_is_pkcs12_data (contents)) {
-		*out_file_format = NM_CRYPTO_FILE_FORMAT_PKCS12;
-		return contents;
-	}
-
-	/* Check for plain DER format */
-	if (contents->len > 2 && contents->data[0] == 0x30 && contents->data[1] == 0x82) {
-		*out_file_format = crypto_verify_cert (contents->data, contents->len, error);
-	} else {
-		array = extract_pem_cert_data (contents, error);
-		if (!array) {
-			g_byte_array_free (contents, TRUE);
-			return NULL;
-		}
-
-		*out_file_format = crypto_verify_cert (array->data, array->len, error);
-		g_byte_array_free (array, TRUE);
-	}
-
-	if (*out_file_format != NM_CRYPTO_FILE_FORMAT_X509) {
-		g_byte_array_free (contents, TRUE);
-		contents = NULL;
-	}
-
-	return contents;
-}
-
-gboolean
-crypto_is_pkcs12_data (const GByteArray *data)
-{
-	GError *error = NULL;
-	gboolean success;
-
-	g_return_val_if_fail (data != NULL, FALSE);
-
-	if (!data->len)
-		return FALSE;
-
-	success = crypto_verify_pkcs12 (data, NULL, &error);
-	if (success == FALSE) {
-		/* If the error was just a decryption error, then it's pkcs#12 */
-		if (error) {
-			if (g_error_matches (error, NM_CRYPTO_ERROR, NM_CRYPTO_ERR_CIPHER_DECRYPT_FAILED))
-				success = TRUE;
-			g_error_free (error);
-		}
-	}
-	return success;
-}
-
-gboolean
-crypto_is_pkcs12_file (const char *file, GError **error)
-{
-	GByteArray *contents;
-	gboolean success = FALSE;
-
-	g_return_val_if_fail (file != NULL, FALSE);
-
-	contents = file_to_g_byte_array (file, error);
-	if (contents) {
-		success = crypto_is_pkcs12_data (contents);
-		g_byte_array_free (contents, TRUE);
-	}
-	return success;
-}
-
-/* Verifies that a private key can be read, and if a password is given, that
- * the private key can be decrypted with that password.
- */
-NMCryptoFileFormat
-crypto_verify_private_key_data (const GByteArray *contents,
-                                const char *password,
-                                GError **error)
-{
-	GByteArray *tmp;
-	NMCryptoFileFormat format = NM_CRYPTO_FILE_FORMAT_UNKNOWN;
-	NMCryptoKeyType ktype = NM_CRYPTO_KEY_TYPE_UNKNOWN;
-	gboolean is_encrypted = FALSE;
-
-	g_return_val_if_fail (contents != NULL, FALSE);
-
-	/* Check for PKCS#12 first */
-	if (crypto_is_pkcs12_data (contents)) {
-		if (!password || crypto_verify_pkcs12 (contents, password, error))
-			format = NM_CRYPTO_FILE_FORMAT_PKCS12;
-	} else {
-		/* Maybe it's PKCS#8 */
-		tmp = parse_pkcs8_key_file (contents, &is_encrypted, error);
-		if (tmp) {
-			if (!password || crypto_verify_pkcs8 (tmp, is_encrypted, password, error))
-				format = NM_CRYPTO_FILE_FORMAT_RAW_KEY;
-		} else {
-			g_clear_error (error);
-
-			/* Or it's old-style OpenSSL */
-			tmp = crypto_decrypt_private_key_data (contents, password, &ktype, error);
-			if (tmp)
-				format = NM_CRYPTO_FILE_FORMAT_RAW_KEY;
-			else if (!password && (ktype != NM_CRYPTO_KEY_TYPE_UNKNOWN))
-				format = NM_CRYPTO_FILE_FORMAT_RAW_KEY;
-		}
-
-		if (tmp) {
-			/* Don't leave decrypted key data around */
-			memset (tmp->data, 0, tmp->len);
-			g_byte_array_free (tmp, TRUE);
-		}
-	}
-
-	return format;
-}
-
-NMCryptoFileFormat
-crypto_verify_private_key (const char *filename,
-                           const char *password,
-                           GError **error)
-{
-	GByteArray *contents;
-	NMCryptoFileFormat format = NM_CRYPTO_FILE_FORMAT_UNKNOWN;
-
-	g_return_val_if_fail (filename != NULL, FALSE);
-
-	contents = file_to_g_byte_array (filename, error);
-	if (contents) {
-		format = crypto_verify_private_key_data (contents, password, error);
-		g_byte_array_free (contents, TRUE);
-	}
-	return format;
-}