VeraCrypt
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<title>VeraCrypt - Free Open source disk encryption with strong security for the Paranoid</title>
<meta name="description" content="VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files."/>
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<a href="Supported%20Operating%20Systems.html">Supported Operating Systems</a>
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<div class="wikidoc">
<h1>Supported Operating Systems</h1>
<div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
VeraCrypt currently supports the following operating systems:</div>
<ul style="text-align:left; margin-top:18px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
<li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows 10 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows 8 and 8.1 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows 7 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows Vista </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows XP </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows Server 2012 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows Server 2008 R2 (64-bit) </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows Server 2008 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Windows Server 2003 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.13 High Sierra </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.12 Sierra </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.11 El Capitan </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.10 Yosemite </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.9 Mavericks </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.8 Mountain Lion </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Mac OS X 10.7 Lion </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
Linux x86 (32-bit and 64-bit versions, kernel 2.6 or compatible) </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
FreeBSD x86 (32-bit and 64-bit versions, starting from version 11) </li></ul>
<div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
<br style="text-align:left">
<span style="text-align:left; font-size:10px; line-height:12px">Note: The following operating systems (among others) are not supported: Windows RT, Windows 2003 IA-64, Windows 2008 IA-64, Windows XP IA-64, and the Embedded/Tablet versions of Windows.</span></div>
<p><br style="text-align:left">
<br style="text-align:left">
Also see the section <strong style="text-align:left"><a href="Supported%20Systems%20for%20System%20Encryption.html" style="text-align:left; color:#0080c0; text-decoration:none.html">Operating Systems Supported for System
 Encryption</a></strong></p>
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tic zip_int64_t deflate_decompress(zip_source_t *, void *, void *, zip_uint64_t, zip_source_cmd_t); static void deflate_free(struct deflate *); zip_source_t * zip_source_deflate(zip_t *za, zip_source_t *src, zip_int32_t cm, int flags) { struct deflate *ctx; zip_source_t *s2; if (src == NULL || (cm != ZIP_CM_DEFLATE && !ZIP_CM_IS_DEFAULT(cm))) { zip_error_set(&za->error, ZIP_ER_INVAL, 0); return NULL; } if ((ctx=(struct deflate *)malloc(sizeof(*ctx))) == NULL) { zip_error_set(&za->error, ZIP_ER_MEMORY, 0); return NULL; } zip_error_init(&ctx->error); ctx->eof = false; ctx->is_stored = false; ctx->can_store = ZIP_CM_IS_DEFAULT(cm); if (flags & ZIP_CODEC_ENCODE) { ctx->mem_level = MAX_MEM_LEVEL; } if ((s2=zip_source_layered(za, src, ((flags & ZIP_CODEC_ENCODE) ? deflate_compress : deflate_decompress), ctx)) == NULL) { deflate_free(ctx); return NULL; } return s2; } static zip_int64_t compress_read(zip_source_t *src, struct deflate *ctx, void *data, zip_uint64_t len) { int end, ret; zip_int64_t n; zip_uint64_t out_offset; uInt out_len; if (zip_error_code_zip(&ctx->error) != ZIP_ER_OK) return -1; if (len == 0 || ctx->is_stored) { return 0; } out_offset = 0; out_len = (uInt)ZIP_MIN(UINT_MAX, len); ctx->zstr.next_out = (Bytef *)data; ctx->zstr.avail_out = out_len; end = 0; while (!end) { ret = deflate(&ctx->zstr, ctx->eof ? Z_FINISH : 0); switch (ret) { case Z_STREAM_END: if (ctx->can_store && ctx->zstr.total_in <= ctx->zstr.total_out) { ctx->is_stored = true; ctx->size = ctx->zstr.total_in; memcpy(data, ctx->buffer, ctx->size); return (zip_int64_t)ctx->size; } /* fallthrough */ case Z_OK: /* all ok */ if (ctx->zstr.avail_out == 0) { out_offset += out_len; if (out_offset < len) { out_len = (uInt)ZIP_MIN(UINT_MAX, len-out_offset); ctx->zstr.next_out = (Bytef *)data+out_offset; ctx->zstr.avail_out = out_len; } else { ctx->can_store = false; end = 1; } } else if (ctx->eof && ctx->zstr.avail_in == 0) end = 1; break; case Z_BUF_ERROR: if (ctx->zstr.avail_in == 0) { if (ctx->eof) { end = 1; break; } if ((n=zip_source_read(src, ctx->buffer, sizeof(ctx->buffer))) < 0) { _zip_error_set_from_source(&ctx->error, src); end = 1; break; } else if (n == 0) { ctx->eof = true; /* TODO: check against stat of src? */ ctx->size = ctx->zstr.total_in; } else { if (ctx->zstr.total_in > 0) { /* we overwrote a previously filled ctx->buffer */ ctx->can_store = false; } ctx->zstr.next_in = (Bytef *)ctx->buffer; ctx->zstr.avail_in = (uInt)n; } continue; } /* fallthrough */ case Z_NEED_DICT: case Z_DATA_ERROR: case Z_STREAM_ERROR: case Z_MEM_ERROR: zip_error_set(&ctx->error, ZIP_ER_ZLIB, ret); end = 1; break; } } if (ctx->zstr.avail_out < len) { ctx->can_store = false; return (zip_int64_t)(len - ctx->zstr.avail_out); } return (zip_error_code_zip(&ctx->error) == ZIP_ER_OK) ? 0 : -1; } static zip_int64_t decompress_read(zip_source_t *src, struct deflate *ctx, void *data, zip_uint64_t len) { int end, ret; zip_int64_t n; zip_uint64_t out_offset; uInt out_len; if (zip_error_code_zip(&ctx->error) != ZIP_ER_OK) return -1; if (len == 0) return 0; out_offset = 0; out_len = (uInt)ZIP_MIN(UINT_MAX, len); ctx->zstr.next_out = (Bytef *)data; ctx->zstr.avail_out = out_len; end = 0; while (!end) { ret = inflate(&ctx->zstr, Z_SYNC_FLUSH); switch (ret) { case Z_OK: if (ctx->zstr.avail_out == 0) { out_offset += out_len; if (out_offset < len) { out_len = (uInt)ZIP_MIN(UINT_MAX, len-out_offset); ctx->zstr.next_out = (Bytef *)data+out_offset; ctx->zstr.avail_out = out_len; } else { end = 1; } } break; case Z_STREAM_END: ctx->eof = 1; end = 1; break; case Z_BUF_ERROR: if (ctx->zstr.avail_in == 0) { if (ctx->eof) { end = 1; break; } if ((n=zip_source_read(src, ctx->buffer, sizeof(ctx->buffer))) < 0) { _zip_error_set_from_source(&ctx->error, src); end = 1; break; } else if (n == 0) { ctx->eof = 1; } else { ctx->zstr.next_in = (Bytef *)ctx->buffer; ctx->zstr.avail_in = (uInt)n; } continue; } /* fallthrough */ case Z_NEED_DICT: case Z_DATA_ERROR: case Z_STREAM_ERROR: case Z_MEM_ERROR: zip_error_set(&ctx->error, ZIP_ER_ZLIB, ret); end = 1; break; } } if (ctx->zstr.avail_out < len) return (zip_int64_t)(len - ctx->zstr.avail_out); return (zip_error_code_zip(&ctx->error) == ZIP_ER_OK) ? 0 : -1; } static zip_int64_t deflate_compress(zip_source_t *src, void *ud, void *data, zip_uint64_t len, zip_source_cmd_t cmd) { struct deflate *ctx; int ret; ctx = (struct deflate *)ud; switch (cmd) { case ZIP_SOURCE_OPEN: ctx->zstr.zalloc = Z_NULL; ctx->zstr.zfree = Z_NULL; ctx->zstr.opaque = NULL; ctx->zstr.avail_in = 0; ctx->zstr.next_in = NULL; ctx->zstr.avail_out = 0; ctx->zstr.next_out = NULL; /* negative value to tell zlib not to write a header */ if ((ret=deflateInit2(&ctx->zstr, Z_BEST_COMPRESSION, Z_DEFLATED, -MAX_WBITS, ctx->mem_level, Z_DEFAULT_STRATEGY)) != Z_OK) { zip_error_set(&ctx->error, ZIP_ER_ZLIB, ret); return -1; } return 0; case ZIP_SOURCE_READ: return compress_read(src, ctx, data, len); case ZIP_SOURCE_CLOSE: deflateEnd(&ctx->zstr); return 0; case ZIP_SOURCE_STAT: { zip_stat_t *st; st = (zip_stat_t *)data; st->comp_method = ctx->is_stored ? ZIP_CM_STORE : ZIP_CM_DEFLATE; st->valid |= ZIP_STAT_COMP_METHOD; if (ctx->eof) { st->comp_size = ctx->size; st->valid |= ZIP_STAT_COMP_SIZE; } else st->valid &= ~ZIP_STAT_COMP_SIZE; } return 0; case ZIP_SOURCE_ERROR: return zip_error_to_data(&ctx->error, data, len); case ZIP_SOURCE_FREE: deflate_free(ctx); return 0; case ZIP_SOURCE_SUPPORTS: return ZIP_SOURCE_SUPPORTS_READABLE; default: zip_error_set(&ctx->error, ZIP_ER_INTERNAL, 0); return -1; } } static zip_int64_t deflate_decompress(zip_source_t *src, void *ud, void *data, zip_uint64_t len, zip_source_cmd_t cmd) { struct deflate *ctx; zip_int64_t n; int ret; ctx = (struct deflate *)ud; switch (cmd) { case ZIP_SOURCE_OPEN: if ((n=zip_source_read(src, ctx->buffer, sizeof(ctx->buffer))) < 0) { _zip_error_set_from_source(&ctx->error, src); return -1; } ctx->zstr.zalloc = Z_NULL; ctx->zstr.zfree = Z_NULL; ctx->zstr.opaque = NULL; ctx->zstr.next_in = (Bytef *)ctx->buffer; ctx->zstr.avail_in = (uInt)n; /* negative value to tell zlib that there is no header */ if ((ret=inflateInit2(&ctx->zstr, -MAX_WBITS)) != Z_OK) { zip_error_set(&ctx->error, ZIP_ER_ZLIB, ret); return -1; } return 0; case ZIP_SOURCE_READ: return decompress_read(src, ctx, data, len); case ZIP_SOURCE_CLOSE: inflateEnd(&ctx->zstr); return 0; case ZIP_SOURCE_STAT: { zip_stat_t *st; st = (zip_stat_t *)data; st->comp_method = ZIP_CM_STORE; if (st->comp_size > 0 && st->size > 0) st->comp_size = st->size; return 0; } case ZIP_SOURCE_ERROR: return zip_error_to_data(&ctx->error, data, len); case ZIP_SOURCE_FREE: free(ctx); return 0; case ZIP_SOURCE_SUPPORTS: return zip_source_make_command_bitmap(ZIP_SOURCE_OPEN, ZIP_SOURCE_READ, ZIP_SOURCE_CLOSE, ZIP_SOURCE_STAT, ZIP_SOURCE_ERROR, ZIP_SOURCE_FREE, -1); default: zip_error_set(&ctx->error, ZIP_ER_OPNOTSUPP, 0); return -1; } } static void deflate_free(struct deflate *ctx) { free(ctx); }