Squashed 'lib/mbedtls/external/mbedtls/' content from commit 2ca6c285a0dd

git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206

2 files changed, 590 insertions, 0 deletions

diff --git a/programs/aes/CMakeLists.txt b/programs/aes/CMakeLists.txt
new file mode 100644
index 00000000000..ccb8db564f2
--- /dev/null
+++ b/programs/aes/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(executables
+    crypt_and_hash
+)
+
+foreach(exe IN LISTS executables)
+    add_executable(${exe} ${exe}.c $<TARGET_OBJECTS:mbedtls_test>)
+    target_link_libraries(${exe} ${mbedcrypto_target} ${CMAKE_THREAD_LIBS_INIT})
+    target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../tests/include)
+endforeach()
+
+install(TARGETS ${executables}
+        DESTINATION "bin"
+        PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
new file mode 100644
index 00000000000..b2cd7047105
--- /dev/null
+++ b/programs/aes/crypt_and_hash.c
@@ -0,0 +1,577 @@
+/*
+ *  \brief  Generic file encryption program using generic wrappers for configured
+ *          security.
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+/* Enable definition of fileno() even when compiling with -std=c99. Must be
+ * set before mbedtls_config.h, which pulls in glibc's features.h indirectly.
+ * Harmless on other platforms. */
+#define _POSIX_C_SOURCE 200112L
+
+#include "mbedtls/build_info.h"
+
+#include "mbedtls/platform.h"
+
+#if defined(MBEDTLS_CIPHER_C) && defined(MBEDTLS_MD_C) && \
+    defined(MBEDTLS_FS_IO)
+#include "mbedtls/cipher.h"
+#include "mbedtls/md.h"
+#include "mbedtls/platform_util.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#endif
+
+#if defined(_WIN32)
+#include <windows.h>
+#if !defined(_WIN32_WCE)
+#include <io.h>
+#endif
+#else
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#define MODE_ENCRYPT    0
+#define MODE_DECRYPT    1
+
+#define USAGE   \
+    "\n  crypt_and_hash <mode> <input filename> <output filename> <cipher> <mbedtls_md> <key>\n" \
+    "\n   <mode>: 0 = encrypt, 1 = decrypt\n" \
+    "\n  example: crypt_and_hash 0 file file.aes AES-128-CBC SHA1 hex:E76B2413958B00E193\n" \
+    "\n"
+
+#if !defined(MBEDTLS_CIPHER_C) || !defined(MBEDTLS_MD_C) || \
+    !defined(MBEDTLS_FS_IO)
+int main(void)
+{
+    mbedtls_printf("MBEDTLS_CIPHER_C and/or MBEDTLS_MD_C and/or MBEDTLS_FS_IO not defined.\n");
+    mbedtls_exit(0);
+}
+#else
+
+
+int main(int argc, char *argv[])
+{
+    int ret = 1, i;
+    unsigned n;
+    int exit_code = MBEDTLS_EXIT_FAILURE;
+    int mode;
+    size_t keylen, ilen, olen;
+    FILE *fkey, *fin = NULL, *fout = NULL;
+
+    char *p;
+    unsigned char IV[16];
+    unsigned char key[512];
+    unsigned char digest[MBEDTLS_MD_MAX_SIZE];
+    unsigned char buffer[1024];
+    unsigned char output[1024];
+    unsigned char diff;
+
+    const mbedtls_cipher_info_t *cipher_info;
+    const mbedtls_md_info_t *md_info;
+    mbedtls_cipher_context_t cipher_ctx;
+    mbedtls_md_context_t md_ctx;
+    mbedtls_cipher_mode_t cipher_mode;
+    unsigned int cipher_block_size;
+    unsigned char md_size;
+#if defined(_WIN32_WCE)
+    long filesize, offset;
+#elif defined(_WIN32)
+    LARGE_INTEGER li_size;
+    __int64 filesize, offset;
+#else
+    off_t filesize, offset;
+#endif
+
+    mbedtls_cipher_init(&cipher_ctx);
+    mbedtls_md_init(&md_ctx);
+
+    /*
+     * Parse the command-line arguments.
+     */
+    if (argc != 7) {
+        const int *list;
+
+        mbedtls_printf(USAGE);
+
+        mbedtls_printf("Available ciphers:\n");
+        list = mbedtls_cipher_list();
+        while (*list) {
+            cipher_info = mbedtls_cipher_info_from_type(*list);
+            const char *name = mbedtls_cipher_info_get_name(cipher_info);
+
+            if (name) {
+                mbedtls_printf("  %s\n", mbedtls_cipher_info_get_name(cipher_info));
+            }
+            list++;
+        }
+
+        mbedtls_printf("\nAvailable message digests:\n");
+        list = mbedtls_md_list();
+        while (*list) {
+            md_info = mbedtls_md_info_from_type(*list);
+            mbedtls_printf("  %s\n", mbedtls_md_get_name(md_info));
+            list++;
+        }
+
+        goto exit;
+    }
+
+    mode = atoi(argv[1]);
+
+    if (mode != MODE_ENCRYPT && mode != MODE_DECRYPT) {
+        mbedtls_fprintf(stderr, "invalid operation mode\n");
+        goto exit;
+    }
+
+    if (strcmp(argv[2], argv[3]) == 0) {
+        mbedtls_fprintf(stderr, "input and output filenames must differ\n");
+        goto exit;
+    }
+
+    if ((fin = fopen(argv[2], "rb")) == NULL) {
+        mbedtls_fprintf(stderr, "fopen(%s,rb) failed\n", argv[2]);
+        goto exit;
+    }
+
+    if ((fout = fopen(argv[3], "wb+")) == NULL) {
+        mbedtls_fprintf(stderr, "fopen(%s,wb+) failed\n", argv[3]);
+        goto exit;
+    }
+
+    /* Ensure no stdio buffering of secrets, as such buffers cannot be wiped. */
+    mbedtls_setbuf(fin, NULL);
+    mbedtls_setbuf(fout, NULL);
+
+    /*
+     * Read the Cipher and MD from the command line
+     */
+    cipher_info = mbedtls_cipher_info_from_string(argv[4]);
+    if (cipher_info == NULL) {
+        mbedtls_fprintf(stderr, "Cipher '%s' not found\n", argv[4]);
+        goto exit;
+    }
+    if ((ret = mbedtls_cipher_setup(&cipher_ctx, cipher_info)) != 0) {
+        mbedtls_fprintf(stderr, "mbedtls_cipher_setup failed\n");
+        goto exit;
+    }
+
+    md_info = mbedtls_md_info_from_string(argv[5]);
+    if (md_info == NULL) {
+        mbedtls_fprintf(stderr, "Message Digest '%s' not found\n", argv[5]);
+        goto exit;
+    }
+
+    if (mbedtls_md_setup(&md_ctx, md_info, 1) != 0) {
+        mbedtls_fprintf(stderr, "mbedtls_md_setup failed\n");
+        goto exit;
+    }
+
+    /*
+     * Read the secret key from file or command line
+     */
+    if ((fkey = fopen(argv[6], "rb")) != NULL) {
+        keylen = fread(key, 1, sizeof(key), fkey);
+        fclose(fkey);
+    } else {
+        if (memcmp(argv[6], "hex:", 4) == 0) {
+            p = &argv[6][4];
+            keylen = 0;
+
+            while (sscanf(p, "%02X", (unsigned int *) &n) > 0 &&
+                   keylen < (int) sizeof(key)) {
+                key[keylen++] = (unsigned char) n;
+                p += 2;
+            }
+        } else {
+            keylen = strlen(argv[6]);
+
+            if (keylen > (int) sizeof(key)) {
+                keylen = (int) sizeof(key);
+            }
+
+            memcpy(key, argv[6], keylen);
+        }
+    }
+
+#if defined(_WIN32_WCE)
+    filesize = fseek(fin, 0L, SEEK_END);
+#else
+#if defined(_WIN32)
+    /*
+     * Support large files (> 2Gb) on Win32
+     */
+    li_size.QuadPart = 0;
+    li_size.LowPart  =
+        SetFilePointer((HANDLE) _get_osfhandle(_fileno(fin)),
+                       li_size.LowPart, &li_size.HighPart, FILE_END);
+
+    if (li_size.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR) {
+        mbedtls_fprintf(stderr, "SetFilePointer(0,FILE_END) failed\n");
+        goto exit;
+    }
+
+    filesize = li_size.QuadPart;
+#else
+    if ((filesize = lseek(fileno(fin), 0, SEEK_END)) < 0) {
+        perror("lseek");
+        goto exit;
+    }
+#endif
+#endif
+
+    if (fseek(fin, 0, SEEK_SET) < 0) {
+        mbedtls_fprintf(stderr, "fseek(0,SEEK_SET) failed\n");
+        goto exit;
+    }
+
+    md_size = mbedtls_md_get_size(md_info);
+    cipher_block_size = mbedtls_cipher_get_block_size(&cipher_ctx);
+
+    if (mode == MODE_ENCRYPT) {
+        /*
+         * Generate the initialization vector as:
+         * IV = MD( filesize || filename )[0..15]
+         */
+        for (i = 0; i < 8; i++) {
+            buffer[i] = (unsigned char) (filesize >> (i << 3));
+        }
+
+        p = argv[2];
+
+        if (mbedtls_md_starts(&md_ctx) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_starts() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_md_update(&md_ctx, buffer, 8) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_update() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_md_update(&md_ctx, (unsigned char *) p, strlen(p))
+            != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_update() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_md_finish(&md_ctx, digest) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_finish() returned error\n");
+            goto exit;
+        }
+
+        memcpy(IV, digest, 16);
+
+        /*
+         * Append the IV at the beginning of the output.
+         */
+        if (fwrite(IV, 1, 16, fout) != 16) {
+            mbedtls_fprintf(stderr, "fwrite(%d bytes) failed\n", 16);
+            goto exit;
+        }
+
+        /*
+         * Hash the IV and the secret key together 8192 times
+         * using the result to setup the AES context and HMAC.
+         */
+        memset(digest, 0,  32);
+        memcpy(digest, IV, 16);
+
+        for (i = 0; i < 8192; i++) {
+            if (mbedtls_md_starts(&md_ctx) != 0) {
+                mbedtls_fprintf(stderr,
+                                "mbedtls_md_starts() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_update(&md_ctx, digest, 32) != 0) {
+                mbedtls_fprintf(stderr,
+                                "mbedtls_md_update() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_update(&md_ctx, key, keylen) != 0) {
+                mbedtls_fprintf(stderr,
+                                "mbedtls_md_update() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_finish(&md_ctx, digest) != 0) {
+                mbedtls_fprintf(stderr,
+                                "mbedtls_md_finish() returned error\n");
+                goto exit;
+            }
+
+        }
+
+        if (mbedtls_cipher_setkey(&cipher_ctx,
+                                  digest,
+                                  (int) mbedtls_cipher_info_get_key_bitlen(cipher_info),
+                                  MBEDTLS_ENCRYPT) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_setkey() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_cipher_set_iv(&cipher_ctx, IV, 16) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_set_iv() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_cipher_reset(&cipher_ctx) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_reset() returned error\n");
+            goto exit;
+        }
+
+        if (mbedtls_md_hmac_starts(&md_ctx, digest, 32) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_hmac_starts() returned error\n");
+            goto exit;
+        }
+
+        /*
+         * Encrypt and write the ciphertext.
+         */
+        for (offset = 0; offset < filesize; offset += cipher_block_size) {
+            ilen = ((unsigned int) filesize - offset > cipher_block_size) ?
+                   cipher_block_size : (unsigned int) (filesize - offset);
+
+            if (fread(buffer, 1, ilen, fin) != ilen) {
+                mbedtls_fprintf(stderr, "fread(%ld bytes) failed\n", (long) ilen);
+                goto exit;
+            }
+
+            if (mbedtls_cipher_update(&cipher_ctx, buffer, ilen, output, &olen) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_cipher_update() returned error\n");
+                goto exit;
+            }
+
+            if (mbedtls_md_hmac_update(&md_ctx, output, olen) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_hmac_update() returned error\n");
+                goto exit;
+            }
+
+            if (fwrite(output, 1, olen, fout) != olen) {
+                mbedtls_fprintf(stderr, "fwrite(%ld bytes) failed\n", (long) olen);
+                goto exit;
+            }
+        }
+
+        if (mbedtls_cipher_finish(&cipher_ctx, output, &olen) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_finish() returned error\n");
+            goto exit;
+        }
+        if (mbedtls_md_hmac_update(&md_ctx, output, olen) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_hmac_update() returned error\n");
+            goto exit;
+        }
+
+        if (fwrite(output, 1, olen, fout) != olen) {
+            mbedtls_fprintf(stderr, "fwrite(%ld bytes) failed\n", (long) olen);
+            goto exit;
+        }
+
+        /*
+         * Finally write the HMAC.
+         */
+        if (mbedtls_md_hmac_finish(&md_ctx, digest) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_hmac_finish() returned error\n");
+            goto exit;
+        }
+
+        if (fwrite(digest, 1, md_size, fout) != md_size) {
+            mbedtls_fprintf(stderr, "fwrite(%d bytes) failed\n", md_size);
+            goto exit;
+        }
+    }
+
+    if (mode == MODE_DECRYPT) {
+        /*
+         *  The encrypted file must be structured as follows:
+         *
+         *        00 .. 15              Initialization Vector
+         *        16 .. 31              Encrypted Block #1
+         *           ..
+         *      N*16 .. (N+1)*16 - 1    Encrypted Block #N
+         *  (N+1)*16 .. (N+1)*16 + n    Hash(ciphertext)
+         */
+        if (filesize < 16 + md_size) {
+            mbedtls_fprintf(stderr, "File too short to be encrypted.\n");
+            goto exit;
+        }
+
+        if (cipher_block_size == 0) {
+            mbedtls_fprintf(stderr, "Invalid cipher block size: 0. \n");
+            goto exit;
+        }
+
+        /*
+         * Check the file size.
+         */
+        cipher_mode = mbedtls_cipher_info_get_mode(cipher_info);
+        if (cipher_mode != MBEDTLS_MODE_GCM &&
+            cipher_mode != MBEDTLS_MODE_CTR &&
+            cipher_mode != MBEDTLS_MODE_CFB &&
+            cipher_mode != MBEDTLS_MODE_OFB &&
+            ((filesize - md_size) % cipher_block_size) != 0) {
+            mbedtls_fprintf(stderr, "File content not a multiple of the block size (%u).\n",
+                            cipher_block_size);
+            goto exit;
+        }
+
+        /*
+         * Subtract the IV + HMAC length.
+         */
+        filesize -= (16 + md_size);
+
+        /*
+         * Read the IV and original filesize modulo 16.
+         */
+        if (fread(buffer, 1, 16, fin) != 16) {
+            mbedtls_fprintf(stderr, "fread(%d bytes) failed\n", 16);
+            goto exit;
+        }
+
+        memcpy(IV, buffer, 16);
+
+        /*
+         * Hash the IV and the secret key together 8192 times
+         * using the result to setup the AES context and HMAC.
+         */
+        memset(digest, 0,  32);
+        memcpy(digest, IV, 16);
+
+        for (i = 0; i < 8192; i++) {
+            if (mbedtls_md_starts(&md_ctx) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_starts() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_update(&md_ctx, digest, 32) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_update() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_update(&md_ctx, key, keylen) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_update() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_md_finish(&md_ctx, digest) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_finish() returned error\n");
+                goto exit;
+            }
+        }
+
+        if (mbedtls_cipher_setkey(&cipher_ctx,
+                                  digest,
+                                  (int) mbedtls_cipher_info_get_key_bitlen(cipher_info),
+                                  MBEDTLS_DECRYPT) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_setkey() returned error\n");
+            goto exit;
+        }
+
+        if (mbedtls_cipher_set_iv(&cipher_ctx, IV, 16) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_set_iv() returned error\n");
+            goto exit;
+        }
+
+        if (mbedtls_cipher_reset(&cipher_ctx) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_reset() returned error\n");
+            goto exit;
+        }
+
+        if (mbedtls_md_hmac_starts(&md_ctx, digest, 32) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_hmac_starts() returned error\n");
+            goto exit;
+        }
+
+        /*
+         * Decrypt and write the plaintext.
+         */
+        for (offset = 0; offset < filesize; offset += cipher_block_size) {
+            ilen = ((unsigned int) filesize - offset > cipher_block_size) ?
+                   cipher_block_size : (unsigned int) (filesize - offset);
+
+            if (fread(buffer, 1, ilen, fin) != ilen) {
+                mbedtls_fprintf(stderr, "fread(%u bytes) failed\n",
+                                cipher_block_size);
+                goto exit;
+            }
+
+            if (mbedtls_md_hmac_update(&md_ctx, buffer, ilen) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_md_hmac_update() returned error\n");
+                goto exit;
+            }
+            if (mbedtls_cipher_update(&cipher_ctx, buffer, ilen, output,
+                                      &olen) != 0) {
+                mbedtls_fprintf(stderr, "mbedtls_cipher_update() returned error\n");
+                goto exit;
+            }
+
+            if (fwrite(output, 1, olen, fout) != olen) {
+                mbedtls_fprintf(stderr, "fwrite(%ld bytes) failed\n", (long) olen);
+                goto exit;
+            }
+        }
+
+        /*
+         * Verify the message authentication code.
+         */
+        if (mbedtls_md_hmac_finish(&md_ctx, digest) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_md_hmac_finish() returned error\n");
+            goto exit;
+        }
+
+        if (fread(buffer, 1, md_size, fin) != md_size) {
+            mbedtls_fprintf(stderr, "fread(%d bytes) failed\n", md_size);
+            goto exit;
+        }
+
+        /* Use constant-time buffer comparison */
+        diff = 0;
+        for (i = 0; i < md_size; i++) {
+            diff |= digest[i] ^ buffer[i];
+        }
+
+        if (diff != 0) {
+            mbedtls_fprintf(stderr, "HMAC check failed: wrong key, "
+                                    "or file corrupted.\n");
+            goto exit;
+        }
+
+        /*
+         * Write the final block of data
+         */
+        if (mbedtls_cipher_finish(&cipher_ctx, output, &olen) != 0) {
+            mbedtls_fprintf(stderr, "mbedtls_cipher_finish() returned error\n");
+            goto exit;
+        }
+
+        if (fwrite(output, 1, olen, fout) != olen) {
+            mbedtls_fprintf(stderr, "fwrite(%ld bytes) failed\n", (long) olen);
+            goto exit;
+        }
+    }
+
+    exit_code = MBEDTLS_EXIT_SUCCESS;
+
+exit:
+    if (fin) {
+        fclose(fin);
+    }
+    if (fout) {
+        fclose(fout);
+    }
+
+    /* Zeroize all command line arguments to also cover
+       the case when the user has missed or reordered some,
+       in which case the key might not be in argv[6]. */
+    for (i = 0; i < argc; i++) {
+        mbedtls_platform_zeroize(argv[i], strlen(argv[i]));
+    }
+
+    mbedtls_platform_zeroize(IV,     sizeof(IV));
+    mbedtls_platform_zeroize(key,    sizeof(key));
+    mbedtls_platform_zeroize(buffer, sizeof(buffer));
+    mbedtls_platform_zeroize(output, sizeof(output));
+    mbedtls_platform_zeroize(digest, sizeof(digest));
+
+    mbedtls_cipher_free(&cipher_ctx);
+    mbedtls_md_free(&md_ctx);
+
+    mbedtls_exit(exit_code);
+}
+#endif /* MBEDTLS_CIPHER_C && MBEDTLS_MD_C && MBEDTLS_FS_IO */