diff options
| author | Long, Qin <qin.long@intel.com> | 2013-11-19 01:49:49 +0000 |
|---|---|---|
| committer | sfu5 <sfu5@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-11-19 01:49:49 +0000 |
| commit | 3aa8dc6cd37d9487e32d24e49e63267df9b9cccb (patch) | |
| tree | 99a9f9403cf4c9aaaa3c96015950a0faa03750f0 /SecurityPkg/RandomNumberGenerator/RngDxe | |
| parent | 419db80bef66edff583a0a5f406e801d70f11344 (diff) | |
| download | edk2-platforms-3aa8dc6cd37d9487e32d24e49e63267df9b9cccb.tar.xz | |
Add UEFI RNG Protocol support. The driver will leverage Intel Secure Key technology to produce the Random Number Generator protocol, which is used to provide high-quality random numbers for use in applications, or entropy for seeding other random number generators. Refer to http://software.intel.com/en-us/articles/intel-digital-random-number-generator-drng-software-implementation-guide/ for more information about Intel Secure Key technology.
Signed-off-by: Long, Qin <qin.long@intel.com>
Reviewed-by: Fu, Siyuan <siyuan.fu@intel.com>
Reviewed-by: Rosenbaum, Lee G <lee.g.rosenbaum@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14858 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'SecurityPkg/RandomNumberGenerator/RngDxe')
12 files changed, 1794 insertions, 0 deletions
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.c b/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.c new file mode 100644 index 0000000000..46d82ac62b --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.c @@ -0,0 +1,367 @@ +/** @file
+ Core Primitive Implementation of the Advanced Encryption Standard (AES) algorithm.
+ Refer to FIPS PUB 197 ("Advanced Encryption Standard (AES)") for detailed algorithm
+ description of AES.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "AesCore.h"
+
+//
+// Number of columns (32-bit words) comprising the State.
+// AES_NB is a constant (value = 4) for NIST FIPS-197.
+//
+#define AES_NB 4
+
+//
+// Pre-computed AES Forward Table: AES_ETABLE[t] = AES_SBOX[t].[02, 01, 01, 03]
+// This is to speed up execution of the cipher by combining SubBytes and
+// ShiftRows with MixColumns steps and transforming them into table lookups.
+//
+GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 AES_FTABLE[] = {
+ 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d, 0xfff2f20d, 0xd66b6bbd,
+ 0xde6f6fb1, 0x91c5c554, 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d,
+ 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a, 0x8fcaca45, 0x1f82829d,
+ 0x89c9c940, 0xfa7d7d87, 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b,
+ 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea, 0x239c9cbf, 0x53a4a4f7,
+ 0xe4727296, 0x9bc0c05b, 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a,
+ 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f, 0x6834345c, 0x51a5a5f4,
+ 0xd1e5e534, 0xf9f1f108, 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f,
+ 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e, 0x30181828, 0x379696a1,
+ 0x0a05050f, 0x2f9a9ab5, 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d,
+ 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f, 0x1209091b, 0x1d83839e,
+ 0x582c2c74, 0x341a1a2e, 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb,
+ 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce, 0x5229297b, 0xdde3e33e,
+ 0x5e2f2f71, 0x13848497, 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c,
+ 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed, 0xd46a6abe, 0x8dcbcb46,
+ 0x67bebed9, 0x7239394b, 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a,
+ 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16, 0x864343c5, 0x9a4d4dd7,
+ 0x66333355, 0x11858594, 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81,
+ 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3, 0xa25151f3, 0x5da3a3fe,
+ 0x804040c0, 0x058f8f8a, 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504,
+ 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163, 0x20101030, 0xe5ffff1a,
+ 0xfdf3f30e, 0xbfd2d26d, 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f,
+ 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739, 0x93c4c457, 0x55a7a7f2,
+ 0xfc7e7e82, 0x7a3d3d47, 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395,
+ 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f, 0x44222266, 0x542a2a7e,
+ 0x3b9090ab, 0x0b888883, 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c,
+ 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76, 0xdbe0e03b, 0x64323256,
+ 0x743a3a4e, 0x140a0a1e, 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4,
+ 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6, 0x399191a8, 0x319595a4,
+ 0xd3e4e437, 0xf279798b, 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7,
+ 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0, 0xd86c6cb4, 0xac5656fa,
+ 0xf3f4f407, 0xcfeaea25, 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818,
+ 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72, 0x381c1c24, 0x57a6a6f1,
+ 0x73b4b4c7, 0x97c6c651, 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21,
+ 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85, 0xe0707090, 0x7c3e3e42,
+ 0x71b5b5c4, 0xcc6666aa, 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12,
+ 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0, 0x17868691, 0x99c1c158,
+ 0x3a1d1d27, 0x279e9eb9, 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133,
+ 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7, 0x2d9b9bb6, 0x3c1e1e22,
+ 0x15878792, 0xc9e9e920, 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a,
+ 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17, 0x65bfbfda, 0xd7e6e631,
+ 0x844242c6, 0xd06868b8, 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11,
+ 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
+};
+
+//
+// Pre-computed AES Reverse Table: AES_DTABLE[t] = AES_INV_SBOX[t].[0e, 09, 0d, 0b]
+//
+GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 AES_RTABLE[] = {
+ 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96, 0x3bab6bcb, 0x1f9d45f1,
+ 0xacfa58ab, 0x4be30393, 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25,
+ 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f, 0xdeb15a49, 0x25ba1b67,
+ 0x45ea0e98, 0x5dfec0e1, 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6,
+ 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da, 0xd4be832d, 0x587421d3,
+ 0x49e06929, 0x8ec9c844, 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd,
+ 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4, 0x63df4a18, 0xe51a3182,
+ 0x97513360, 0x62537f45, 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94,
+ 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7, 0xab73d323, 0x724b02e2,
+ 0xe31f8f57, 0x6655ab2a, 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5,
+ 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c, 0x8acf1c2b, 0xa779b492,
+ 0xf307f2f0, 0x4e69e2a1, 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a,
+ 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75, 0x0b83ec39, 0x4060efaa,
+ 0x5e719f06, 0xbd6e1051, 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46,
+ 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff, 0x1998fb24, 0xd6bde997,
+ 0x894043cc, 0x67d99e77, 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb,
+ 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000, 0x09808683, 0x322bed48,
+ 0x1e1170ac, 0x6c5a724e, 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927,
+ 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a, 0x0c0a67b1, 0x9357e70f,
+ 0xb4ee96d2, 0x1b9b919e, 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16,
+ 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d, 0x0e090d0b, 0xf28bc7ad,
+ 0x2db6a8b9, 0x141ea9c8, 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd,
+ 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34, 0x8b432976, 0xcb23c6dc,
+ 0xb6edfc68, 0xb8e4f163, 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120,
+ 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d, 0x1d9e2f4b, 0xdcb230f3,
+ 0x0d8652ec, 0x77c1e3d0, 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422,
+ 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef, 0x87494ec7, 0xd938d1c1,
+ 0x8ccaa2fe, 0x98d40b36, 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4,
+ 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662, 0xf68d13c2, 0x90d8b8e8,
+ 0x2e39f75e, 0x82c3aff5, 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3,
+ 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b, 0xcd267809, 0x6e5918f4,
+ 0xec9ab701, 0x834f9aa8, 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6,
+ 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6, 0x31a4b2af, 0x2a3f2331,
+ 0xc6a59430, 0x35a266c0, 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815,
+ 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f, 0x764dd68d, 0x43efb04d,
+ 0xccaa4d54, 0xe49604df, 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f,
+ 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e, 0xb3671d5a, 0x92dbd252,
+ 0xe9105633, 0x6dd64713, 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89,
+ 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c, 0x9cd2df59, 0x55f2733f,
+ 0x1814ce79, 0x73c737bf, 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86,
+ 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f, 0x161dc372, 0xbce2250c,
+ 0x283c498b, 0xff0d9541, 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190,
+ 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
+};
+
+//
+// AES Inverse S-Box (Defined in sec 5.3.2 of FIPS PUB 197).
+//
+GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT8 AES_INV_SBOX[256] = {
+ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+ 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+ 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+ 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+ 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+ 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+ 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+ 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+ 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+ 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+ 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+ 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+ 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+ 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+ 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
+};
+
+//
+// Round constant word array used in AES key expansion.
+//
+GLOBAL_REMOVE_IF_UNREFERENCED CONST UINT32 Rcon[] = {
+ 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
+ 0x20000000, 0x40000000, 0x80000000, 0x1B000000, 0x36000000
+};
+
+//
+// Rotates x right n bits (circular right shift operation)
+//
+#define ROTATE_RIGHT32(x, n) (((x) >> (n)) | ((x) << (32-(n))))
+
+//
+// Loading & Storing 32-bit words in big-endian format: y[3..0] --> x; x --> y[3..0];
+//
+#define LOAD32H(x, y) { x = ((UINT32)((y)[0] & 0xFF) << 24) | ((UINT32)((y)[1] & 0xFF) << 16) | \
+ ((UINT32)((y)[2] & 0xFF) << 8) | ((UINT32)((y)[3] & 0xFF)); }
+#define STORE32H(x, y) { (y)[0] = (UINT8)(((x) >> 24) & 0xFF); (y)[1] = (UINT8)(((x) >> 16) & 0xFF); \
+ (y)[2] = (UINT8)(((x) >> 8) & 0xFF); (y)[3] = (UINT8)((x) & 0xFF); }
+
+//
+// Wrap macros for AES forward and reverse tables lookups
+//
+#define AES_FT0(x) AES_FTABLE[x]
+#define AES_FT1(x) ROTATE_RIGHT32(AES_FTABLE[x], 8)
+#define AES_FT2(x) ROTATE_RIGHT32(AES_FTABLE[x], 16)
+#define AES_FT3(x) ROTATE_RIGHT32(AES_FTABLE[x], 24)
+
+#define AES_RT0(x) AES_RTABLE[x]
+#define AES_RT1(x) ROTATE_RIGHT32(AES_RTABLE[x], 8)
+#define AES_RT2(x) ROTATE_RIGHT32(AES_RTABLE[x], 16)
+#define AES_RT3(x) ROTATE_RIGHT32(AES_RTABLE[x], 24)
+
+///
+/// AES Key Schedule which is expanded from symmetric key [Size 60 = 4 * ((Max AES Round, 14) + 1)].
+///
+typedef struct {
+ UINTN Nk; // Number of Cipher Key (in 32-bit words);
+ UINT32 eKey[60]; // Expanded AES encryption key
+ UINT32 dKey[60]; // Expanded AES decryption key (Not used here)
+} AES_KEY;
+
+/**
+ AES Key Expansion.
+ This function expands the cipher key into encryption schedule.
+
+ @param[in] Key AES symmetric key buffer.
+ @param[in] KeyLenInBits Key length in bits (128, 192, or 256).
+ @param[out] AesKey Expanded AES Key schedule for encryption.
+
+ @retval EFI_SUCCESS AES key expansion succeeded.
+ @retval EFI_INVALID_PARAMETER Unsupported key length.
+
+**/
+EFI_STATUS
+EFIAPI
+AesExpandKey (
+ IN UINT8 *Key,
+ IN UINTN KeyLenInBits,
+ OUT AES_KEY *AesKey
+ )
+{
+ UINTN Nk, Nr, NW;
+ UINTN i, j, k;
+ UINT32 *Ek;
+ UINT32 Temp;
+
+ //
+ // Nk - Number of 32-bit words comprising the cipher key. (Nk = 4, 6 or 8)
+ // Nr - Number of rounds. (Nr = 10, 12, or 14), which is dependent on the key size.
+ //
+ Nk = KeyLenInBits >> 5;
+ if (Nk != 4 && Nk != 6 && Nk != 8) {
+ return EFI_INVALID_PARAMETER;
+ }
+ Nr = Nk + 6;
+ NW = AES_NB * (Nr + 1); // Key Expansion generates a total of Nb * (Nr + 1) words
+ AesKey->Nk = Nk;
+
+ //
+ // Load initial symmetric AES key;
+ // Note that AES was designed on big-endian systems.
+ //
+ Ek = AesKey->eKey;
+ for (i = j = 0; i < Nk; i++, j+=4) {
+ LOAD32H (Ek[i], Key + j);
+ }
+
+ //
+ // Initialize the encryption key scheduler
+ //
+ for (j = Nk, k = 0; j < NW; j+=Nk, k++) {
+ Temp = Ek[j - 1];
+ Ek[j] = Ek[j - Nk] ^ (AES_FT2((Temp >> 16) & 0xFF) & 0xFF000000) ^
+ (AES_FT3((Temp >> 8) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0((Temp) & 0xFF) & 0x0000FF00) ^
+ (AES_FT1((Temp >> 24) & 0xFF) & 0x000000FF) ^
+ Rcon[k];
+ if (Nk <= 6) {
+ //
+ // If AES Cipher Key is 128 or 192 bits
+ //
+ for (i = 1; i < Nk && (i + j) < NW; i++) {
+ Ek [i + j] = Ek [i + j - Nk] ^ Ek[i + j - 1];
+ }
+ } else {
+ //
+ // Different routine for key expansion If Cipher Key is 256 bits,
+ //
+ for (i = 1; i < 4 && (i + j) < NW; i++) {
+ Ek [i + j] = Ek[i + j - Nk] ^ Ek[i + j - 1];
+ }
+ if (j + 4 < NW) {
+ Temp = Ek[j + 3];
+ Ek[j + 4] = Ek[j + 4 - Nk] ^ (AES_FT2((Temp >> 24) & 0xFF) & 0xFF000000) ^
+ (AES_FT3((Temp >> 16) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0((Temp >> 8) & 0xFF) & 0x0000FF00) ^
+ (AES_FT1((Temp) & 0xFF) & 0x000000FF);
+ }
+
+ for (i = 5; i < Nk && (i + j) < NW; i++) {
+ Ek[i + j] = Ek[i + j - Nk] ^ Ek[i + j - 1];
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Encrypts one single block data (128 bits) with AES algorithm.
+
+ @param[in] Key AES symmetric key buffer.
+ @param[in] InData One block of input plaintext to be encrypted.
+ @param[out] OutData Encrypted output ciphertext.
+
+ @retval EFI_SUCCESS AES Block Encryption succeeded.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+AesEncrypt (
+ IN UINT8 *Key,
+ IN UINT8 *InData,
+ OUT UINT8 *OutData
+ )
+{
+ AES_KEY AesKey;
+ UINTN Nr;
+ UINT32 *Ek, s[4], t[4], *x, *y, *Temp;
+ UINTN Index, k, Round;
+
+ if ((Key == NULL) || (InData == NULL) || (OutData == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Expands AES Key for encryption.
+ //
+ AesExpandKey (Key, 128, &AesKey);
+
+ Nr = AesKey.Nk + 6;
+ Ek = AesKey.eKey;
+
+ //
+ // Initialize the cipher State array with the initial round key
+ //
+ for (Index = 0; Index < AES_NB; Index++) {
+ LOAD32H (s[Index], InData + 4 * Index);
+ s[Index] ^= Ek[Index];
+ }
+
+ k = AES_NB;
+ x = s;
+ y = t;
+ //
+ // AES Cipher transformation rounds (Nr - 1 rounds), in which SubBytes(),
+ // ShiftRows() and MixColumns() operations were combined by a sequence of
+ // table lookups to speed up the execution.
+ //
+ for (Round = 1; Round < Nr; Round++) {
+ y[0] = AES_FT0 ((x[0] >> 24) ) ^ AES_FT1 ((x[1] >> 16) & 0xFF) ^
+ AES_FT2 ((x[2] >> 8) & 0xFF) ^ AES_FT3 ((x[3] ) & 0xFF) ^ Ek[k];
+ y[1] = AES_FT0 ((x[1] >> 24) ) ^ AES_FT1 ((x[2] >> 16) & 0xFF) ^
+ AES_FT2 ((x[3] >> 8) & 0xFF) ^ AES_FT3 ((x[0] ) & 0xFF) ^ Ek[k + 1];
+ y[2] = AES_FT0 ((x[2] >> 24) ) ^ AES_FT1 ((x[3] >> 16) & 0xFF) ^
+ AES_FT2 ((x[0] >> 8) & 0xFF) ^ AES_FT3 ((x[1] ) & 0xFF) ^ Ek[k + 2];
+ y[3] = AES_FT0 ((x[3] >> 24) ) ^ AES_FT1 ((x[0] >> 16) & 0xFF) ^
+ AES_FT2 ((x[1] >> 8) & 0xFF) ^ AES_FT3 ((x[2] ) & 0xFF) ^ Ek[k + 3];
+
+ k += 4;
+ Temp = x; x = y; y = Temp;
+ }
+
+ //
+ // Apply the final round, which does not include MixColumns() transformation
+ //
+ y[0] = (AES_FT2 ((x[0] >> 24) ) & 0xFF000000) ^ (AES_FT3 ((x[1] >> 16) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0 ((x[2] >> 8) & 0xFF) & 0x0000FF00) ^ (AES_FT1 ((x[3] ) & 0xFF) & 0x000000FF) ^
+ Ek[k];
+ y[1] = (AES_FT2 ((x[1] >> 24) ) & 0xFF000000) ^ (AES_FT3 ((x[2] >> 16) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0 ((x[3] >> 8) & 0xFF) & 0x0000FF00) ^ (AES_FT1 ((x[0] ) & 0xFF) & 0x000000FF) ^
+ Ek[k + 1];
+ y[2] = (AES_FT2 ((x[2] >> 24) ) & 0xFF000000) ^ (AES_FT3 ((x[3] >> 16) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0 ((x[0] >> 8) & 0xFF) & 0x0000FF00) ^ (AES_FT1 ((x[1] ) & 0xFF) & 0x000000FF) ^
+ Ek[k + 2];
+ y[3] = (AES_FT2 ((x[3] >> 24) ) & 0xFF000000) ^ (AES_FT3 ((x[0] >> 16) & 0xFF) & 0x00FF0000) ^
+ (AES_FT0 ((x[1] >> 8) & 0xFF) & 0x0000FF00) ^ (AES_FT1 ((x[2] ) & 0xFF) & 0x000000FF) ^
+ Ek[k + 3];
+
+ //
+ // Output the transformed result;
+ //
+ for (Index = 0; Index < AES_NB; Index++) {
+ STORE32H (y[Index], OutData + 4 * Index);
+ }
+
+ return EFI_SUCCESS;
+}
\ No newline at end of file diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h b/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h new file mode 100644 index 0000000000..8279c61160 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h @@ -0,0 +1,37 @@ +/** @file
+ Function prototype for AES Block Cipher support.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __AES_CORE_H__
+#define __AES_CORE_H__
+
+/**
+ Encrypts one single block data (128 bits) with AES algorithm.
+
+ @param[in] Key AES symmetric key buffer.
+ @param[in] InData One block of input plaintext to be encrypted.
+ @param[out] OutData Encrypted output ciphertext.
+
+ @retval EFI_SUCCESS AES Block Encryption succeeded.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+AesEncrypt (
+ IN UINT8 *Key,
+ IN UINT8 *InData,
+ OUT UINT8 *OutData
+ );
+
+#endif // __AES_CORE_H__
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm new file mode 100644 index 0000000000..37b38307e2 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/AsmRdRand.asm @@ -0,0 +1,67 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; AsmRdRand.Asm
+;
+; Abstract:
+;
+; Implementation for 16-, and 32- invocations of RDRAND instruction under 32bit platform.
+;
+; Notes:
+;
+; Visual Studio coding practices do not use inline asm since multiple compilers and
+; architectures are supported assembler not recognizing rdrand instruction so using DB's.
+;
+;------------------------------------------------------------------------------
+
+ .586P
+ .model flat, C
+ .code
+
+;------------------------------------------------------------------------------
+; Generate a 16 bit random number
+; Return TRUE if Rand generated successfully, or FALSE if not
+;
+; BOOLEAN EFIAPI RdRand16Step (UINT16 *Rand); ECX
+;------------------------------------------------------------------------------
+RdRand16Step PROC
+ ; rdrand ax ; generate a 16 bit RN into ax, CF=1 if RN generated ok, otherwise CF=0
+ db 0fh, 0c7h, 0f0h ; rdrand r16: "0f c7 /6 ModRM:r/m(w)"
+ jb rn16_ok ; jmp if CF=1
+ xor eax, eax ; reg=0 if CF=0
+ ret ; return with failure status
+rn16_ok:
+ mov [ecx], ax
+ mov eax, 1
+ ret
+RdRand16Step ENDP
+
+;------------------------------------------------------------------------------
+; Generate a 32 bit random number
+; Return TRUE if Rand generated successfully, or FALSE if not
+;
+; BOOLEAN EFIAPI RdRand32Step (UINT32 *Rand); ECX
+;------------------------------------------------------------------------------
+RdRand32Step PROC
+ ; rdrand eax ; generate a 32 bit RN into eax, CF=1 if RN generated ok, otherwise CF=0
+ db 0fh, 0c7h, 0f0h ; rdrand r32: "0f c7 /6 ModRM:r/m(w)"
+ jb rn32_ok ; jmp if CF=1
+ xor eax, eax ; reg=0 if CF=0
+ ret ; return with failure status
+rn32_ok:
+ mov [ecx], eax
+ mov eax, 1
+ ret
+RdRand32Step ENDP
+
+ END
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c new file mode 100644 index 0000000000..f42302afe3 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/GccRdRand.c @@ -0,0 +1,69 @@ +/** @file
+ RDRAND Support Routines for GCC environment.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+/**
+ Generates a 16-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand16Step (
+ OUT UINT16 *Rand
+ )
+{
+ UINT8 Carry;
+
+ //
+ // Uses byte code for RDRAND instruction,
+ // in case that GCC version has no direct support on RDRAND assembly.
+ //
+ __asm__ __volatile__ (
+ ".byte 0x66; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1"
+ :"=a" (*Rand),
+ "=qm" (Carry)
+ );
+
+ return (BOOLEAN) Carry;
+}
+
+/**
+ Generates a 32-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand32Step (
+ OUT UINT32 *Rand
+ )
+{
+ UINT8 Carry;
+
+ __asm__ __volatile__ (
+ ".byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1"
+ :"=a" (*Rand),
+ "=qm" (Carry)
+ );
+
+ return (BOOLEAN) Carry;
+}
\ No newline at end of file diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/RdRandWord.c b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/RdRandWord.c new file mode 100644 index 0000000000..125c53b3d3 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/IA32/RdRandWord.c @@ -0,0 +1,104 @@ +/** @file
+ RDRAND Support Routines.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "RdRand.h"
+
+/**
+ Generates a 64-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand64Step (
+ OUT UINT64 *Rand
+ )
+{
+ UINT32 RandLow;
+ UINT32 RandHigh;
+
+ //
+ // Generating a 64-bit rand on a 32-bit system by
+ // mapping two 32-bit RDRAND instructions.
+ //
+ if (!RdRand32Step (&RandLow)) {
+ return FALSE;
+ }
+ if (!RdRand32Step (&RandHigh)) {
+ return FALSE;
+ }
+
+ *Rand = (UINT64) RandLow | LShiftU64 ((UINT64)RandHigh, 32);
+
+ return TRUE;
+}
+
+/**
+ Calls RDRAND to request a word-length random number.
+
+ @param[out] Rand Buffer pointer to store the random number.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS Random word generation succeeded.
+ @retval EFI_NOT_READY Failed to request random word.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandWord (
+ OUT UINTN *Rand,
+ IN BOOLEAN NeedRetry
+ )
+{
+ return RdRand32 (Rand, NeedRetry);
+}
+
+/**
+ Calls RDRAND to request multiple word-length random numbers.
+
+ @param[in] Length Size of the buffer, in words, to fill with.
+ @param[out] RandBuffer Pointer to the buffer to store the random result.
+
+ @retval EFI_SUCCESS Random words generation succeeded.
+ @retval EFI_NOT_READY Failed to request random words.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetWords (
+ IN UINTN Length,
+ OUT UINTN *RandBuffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 Index;
+
+ for (Index = 0; Index < Length; Index++) {
+ //
+ // Obtain one word-length (32-bit) Random Number with possible retry-loop.
+ //
+ Status = RdRand32 (RandBuffer, TRUE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ RandBuffer++;
+ }
+
+ return EFI_SUCCESS;
+}
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c new file mode 100644 index 0000000000..7e618dc91f --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.c @@ -0,0 +1,395 @@ +/** @file
+ Support routines for RDRAND instruction access.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "RdRand.h"
+#include "AesCore.h"
+
+//
+// Bit mask used to determine if RdRand instruction is supported.
+//
+#define RDRAND_MASK 0x40000000
+
+/**
+ Determines whether or not RDRAND instruction is supported by the host hardware.
+
+ @retval EFI_SUCCESS RDRAND instruction supported.
+ @retval EFI_UNSUPPORTED RDRAND instruction not supported.
+
+**/
+EFI_STATUS
+EFIAPI
+IsRdRandSupported (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT32 RegEax;
+ UINT32 RegEbx;
+ UINT32 RegEcx;
+ UINT32 RegEdx;
+ BOOLEAN IsIntelCpu;
+
+ Status = EFI_UNSUPPORTED;
+ IsIntelCpu = FALSE;
+
+ //
+ // Checks whether the current processor is an Intel product by CPUID.
+ //
+ AsmCpuid (0, &RegEax, &RegEbx, &RegEcx, &RegEdx);
+ if ((CompareMem ((CHAR8 *)(&RegEbx), "Genu", 4) == 0) &&
+ (CompareMem ((CHAR8 *)(&RegEdx), "ineI", 4) == 0) &&
+ (CompareMem ((CHAR8 *)(&RegEcx), "ntel", 4) == 0)) {
+ IsIntelCpu = TRUE;
+ }
+
+ if (IsIntelCpu) {
+ //
+ // Determine RDRAND support by examining bit 30 of the ECX register returned by CPUID.
+ // A value of 1 indicates that processor supports RDRAND instruction.
+ //
+ AsmCpuid (1, 0, 0, &RegEcx, 0);
+
+ if ((RegEcx & RDRAND_MASK) == RDRAND_MASK) {
+ Status = EFI_SUCCESS;
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Calls RDRAND to obtain a 16-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand16 (
+ OUT UINT16 *Rand,
+ IN BOOLEAN NeedRetry
+ )
+{
+ UINT32 Index;
+ UINT32 RetryCount;
+
+ if (NeedRetry) {
+ RetryCount = RETRY_LIMIT;
+ } else {
+ RetryCount = 1;
+ }
+
+ //
+ // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds.
+ //
+ for (Index = 0; Index < RetryCount; Index++) {
+ if (RdRand16Step (Rand)) {
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_READY;
+}
+
+/**
+ Calls RDRAND to obtain a 32-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand32 (
+ OUT UINT32 *Rand,
+ IN BOOLEAN NeedRetry
+ )
+{
+ UINT32 Index;
+ UINT32 RetryCount;
+
+ if (NeedRetry) {
+ RetryCount = RETRY_LIMIT;
+ } else {
+ RetryCount = 1;
+ }
+
+ //
+ // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds.
+ //
+ for (Index = 0; Index < RetryCount; Index++) {
+ if (RdRand32Step (Rand)) {
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_READY;
+}
+
+/**
+ Calls RDRAND to obtain a 64-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand64 (
+ OUT UINT64 *Rand,
+ IN BOOLEAN NeedRetry
+ )
+{
+ UINT32 Index;
+ UINT32 RetryCount;
+
+ if (NeedRetry) {
+ RetryCount = RETRY_LIMIT;
+ } else {
+ RetryCount = 1;
+ }
+
+ //
+ // Perform a single call to RDRAND, or enter a loop call until RDRAND succeeds.
+ //
+ for (Index = 0; Index < RetryCount; Index++) {
+ if (RdRand64Step (Rand)) {
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_READY;
+}
+
+/**
+ Calls RDRAND to fill a buffer of arbitrary size with random bytes.
+
+ @param[in] Length Size of the buffer, in bytes, to fill with.
+ @param[out] RandBuffer Pointer to the buffer to store the random result.
+
+ @retval EFI_SUCCESS Random bytes generation succeeded.
+ @retval EFI_NOT_READY Failed to request random bytes.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetBytes (
+ IN UINTN Length,
+ OUT UINT8 *RandBuffer
+ )
+{
+ EFI_STATUS Status;
+ UINT8 *Start;
+ UINT8 *ResidualStart;
+ UINTN *BlockStart;
+ UINTN TempRand;
+ UINTN Count;
+ UINTN Residual;
+ UINTN StartLen;
+ UINTN BlockNum;
+ UINTN Index;
+
+ ResidualStart = NULL;
+ TempRand = 0;
+
+ //
+ // Compute the address of the first word aligned (32/64-bit) block in the
+ // destination buffer, depending on whether we are in 32- or 64-bit mode.
+ //
+ Start = RandBuffer;
+ if (((UINT32)(UINTN)Start % (UINT32)sizeof(UINTN)) == 0) {
+ BlockStart = (UINTN *)Start;
+ Count = Length;
+ StartLen = 0;
+ } else {
+ BlockStart = (UINTN *)(((UINTN)Start & ~(UINTN)(sizeof(UINTN) - 1)) + (UINTN)sizeof(UINTN));
+ Count = Length - (sizeof (UINTN) - (UINT32)((UINTN)Start % sizeof (UINTN)));
+ StartLen = (UINT32)((UINTN)BlockStart - (UINTN)Start);
+ }
+
+ //
+ // Compute the number of word blocks and the remaining number of bytes.
+ //
+ Residual = Count % sizeof (UINTN);
+ BlockNum = Count / sizeof (UINTN);
+ if (Residual != 0) {
+ ResidualStart = (UINT8 *) (BlockStart + BlockNum);
+ }
+
+ //
+ // Obtain a temporary random number for use in the residuals. Failout if retry fails.
+ //
+ if (StartLen > 0) {
+ Status = RdRandWord ((UINTN *) &TempRand, TRUE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ //
+ // Populate the starting mis-aligned block.
+ //
+ for (Index = 0; Index < StartLen; Index++) {
+ Start[Index] = (UINT8)(TempRand & 0xff);
+ TempRand = TempRand >> 8;
+ }
+
+ //
+ // Populate the central aligned block. Fail out if retry fails.
+ //
+ Status = RdRandGetWords (BlockNum, (UINTN *)(BlockStart));
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ //
+ // Populate the final mis-aligned block.
+ //
+ if (Residual > 0) {
+ Status = RdRandWord ((UINTN *)&TempRand, TRUE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ for (Index = 0; Index < Residual; Index++) {
+ ResidualStart[Index] = (UINT8)(TempRand & 0xff);
+ TempRand = TempRand >> 8;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Creates a 128bit random value that is fully forward and backward prediction resistant,
+ suitable for seeding a NIST SP800-90 Compliant, FIPS 1402-2 certifiable SW DRBG.
+ This function takes multiple random numbers through RDRAND without intervening
+ delays to ensure reseeding and performs AES-CBC-MAC over the data to compute the
+ seed value.
+
+ @param[out] SeedBuffer Pointer to a 128bit buffer to store the random seed.
+
+ @retval EFI_SUCCESS Random seed generation succeeded.
+ @retval EFI_NOT_READY Failed to request random bytes.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetSeed128 (
+ OUT UINT8 *SeedBuffer
+ )
+{
+ EFI_STATUS Status;
+ UINT8 RandByte[16];
+ UINT8 Key[16];
+ UINT8 Ffv[16];
+ UINT8 Xored[16];
+ UINT32 Index;
+ UINT32 Index2;
+
+ //
+ // Chose an arbitary key and zero the feed_forward_value (FFV)
+ //
+ for (Index = 0; Index < 16; Index++) {
+ Key[Index] = (UINT8) Index;
+ Ffv[Index] = 0;
+ }
+
+ //
+ // Perform CBC_MAC over 32 * 128 bit values, with 10us gaps between 128 bit value
+ // The 10us gaps will ensure multiple reseeds within the HW RNG with a large design margin.
+ //
+ for (Index = 0; Index < 32; Index++) {
+ MicroSecondDelay (10);
+ Status = RdRandGetBytes (16, RandByte);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Perform XOR operations on two 128-bit value.
+ //
+ for (Index2 = 0; Index2 < 16; Index2++) {
+ Xored[Index2] = RandByte[Index2] ^ Ffv[Index2];
+ }
+
+ AesEncrypt (Key, Xored, Ffv);
+ }
+
+ for (Index = 0; Index < 16; Index++) {
+ SeedBuffer[Index] = Ffv[Index];
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Generate high-quality entropy source through RDRAND.
+
+ @param[in] Length Size of the buffer, in bytes, to fill with.
+ @param[out] Entropy Pointer to the buffer to store the entropy data.
+
+ @retval EFI_SUCCESS Entropy generation succeeded.
+ @retval EFI_NOT_READY Failed to request random data.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGenerateEntropy (
+ IN UINTN Length,
+ OUT UINT8 *Entropy
+ )
+{
+ EFI_STATUS Status;
+ UINTN BlockCount;
+ UINT8 Seed[16];
+ UINT8 *Ptr;
+
+ Status = EFI_NOT_READY;
+ BlockCount = Length / 16;
+ Ptr = (UINT8 *)Entropy;
+
+ //
+ // Generate high-quality seed for DRBG Entropy
+ //
+ while (BlockCount > 0) {
+ Status = RdRandGetSeed128 (Seed);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ CopyMem (Ptr, Seed, 16);
+
+ BlockCount--;
+ Ptr = Ptr + 16;
+ }
+
+ //
+ // Populate the remained data as request.
+ //
+ Status = RdRandGetSeed128 (Seed);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ CopyMem (Ptr, Seed, (Length % 16));
+
+ return Status;
+}
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h new file mode 100644 index 0000000000..20fd9fbd3f --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RdRand.h @@ -0,0 +1,213 @@ +/** @file
+ Header for the RDRAND APIs used by RNG DXE driver.
+
+ Support API definitions for RDRAND instruction access, which will leverage
+ Intel Secure Key technology to provide high-quality random numbers for use
+ in applications, or entropy for seeding other random number generators.
+ Refer to http://software.intel.com/en-us/articles/intel-digital-random-number
+ -generator-drng-software-implementation-guide/ for more information about Intel
+ Secure Key technology.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __RD_RAND_H__
+#define __RD_RAND_H__
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/TimerLib.h>
+#include <Protocol/Rng.h>
+
+//
+// The maximun number of retries to obtain one available random number.
+//
+#define RETRY_LIMIT 10
+
+/**
+ Determines whether or not RDRAND instruction is supported by the host hardware.
+
+ @retval EFI_SUCCESS RDRAND instruction supported.
+ @retval EFI_UNSUPPORTED RDRAND instruction not supported.
+
+**/
+EFI_STATUS
+EFIAPI
+IsRdRandSupported (
+ VOID
+ );
+
+/**
+ Generates a 16-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand16Step (
+ OUT UINT16 *Rand
+ );
+
+/**
+ Generates a 32-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand32Step (
+ OUT UINT32 *Rand
+ );
+
+/**
+ Generates a 64-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand64Step (
+ OUT UINT64 *Rand
+ );
+
+/**
+ Calls RDRAND to obtain a 16-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand16 (
+ OUT UINT16 *Rand,
+ IN BOOLEAN NeedRetry
+ );
+
+/**
+ Calls RDRAND to obtain a 32-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand32 (
+ OUT UINT32 *Rand,
+ IN BOOLEAN NeedRetry
+ );
+
+/**
+ Calls RDRAND to obtain a 64-bit random number.
+
+ @param[out] Rand Buffer pointer to store the random result.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS RDRAND call was successful.
+ @retval EFI_NOT_READY Failed attempts to call RDRAND.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRand64 (
+ OUT UINT64 *Rand,
+ IN BOOLEAN NeedRetry
+ );
+
+/**
+ Calls RDRAND to request a word-length random number.
+
+ @param[out] Rand Buffer pointer to store the random number.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS Random word generation succeeded.
+ @retval EFI_NOT_READY Failed to request random word.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandWord (
+ OUT UINTN *Rand,
+ IN BOOLEAN NeedRetry
+ );
+
+/**
+ Calls RDRAND to request multiple word-length random numbers.
+
+ @param[in] Length Size of the buffer, in words, to fill with.
+ @param[out] RandBuffer Pointer to the buffer to store the random result.
+
+ @retval EFI_SUCCESS Random words generation succeeded.
+ @retval EFI_NOT_READY Failed to request random words.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetWords (
+ IN UINTN Length,
+ OUT UINTN *RandBuffer
+ );
+
+/**
+ Calls RDRAND to fill a buffer of arbitrary size with random bytes.
+
+ @param[in] Length Size of the buffer, in bytes, to fill with.
+ @param[out] RandBuffer Pointer to the buffer to store the random result.
+
+ @retval EFI_SUCCESS Random bytes generation succeeded.
+ @retval EFI_NOT_READY Failed to request random bytes.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetBytes (
+ IN UINTN Length,
+ OUT UINT8 *RandBuffer
+ );
+
+/**
+ Generate high-quality entropy source through RDRAND.
+
+ @param[in] Length Size of the buffer, in bytes, to fill with.
+ @param[out] Entropy Pointer to the buffer to store the entropy data.
+
+ @retval EFI_SUCCESS Entropy generation succeeded.
+ @retval EFI_NOT_READY Failed to request random data.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGenerateEntropy (
+ IN UINTN Length,
+ OUT UINT8 *Entropy
+ );
+
+#endif // __RD_RAND_H__
\ No newline at end of file diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c new file mode 100644 index 0000000000..98ef3b357f --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c @@ -0,0 +1,219 @@ +/** @file
+ RNG Driver to produce the UEFI Random Number Generator protocol.
+
+ The driver will use the new RDRAND instruction to produce high-quality, high-performance
+ entropy and random number.
+
+ RNG Algoritnms defined in UEFI 2.4:
+ - EFI_RNG_ALGORITHM_SP800_90_CTR_256_GUID - Supported
+ (RDRAND implements a hardware NIST SP800-90 AES-CTR-256 based DRBG)
+ - EFI_RNG_ALGORITHM_RAW - Supported
+ (Structuring RDRAND invocation can be guaranteed as high-quality entropy source)
+ - EFI_RNG_ALGORITHM_SP800_90_HMAC_256_GUID - Unsupported
+ - EFI_RNG_ALGORITHM_SP800_90_HASH_256_GUID - Unsupported
+ - EFI_RNG_ALGORITHM_X9_31_3DES_GUID - Unsupported
+ - EFI_RNG_ALGORITHM_X9_31_AES_GUID - Unsupported
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "RdRand.h"
+
+//
+// Supported RNG Algorithms list by this driver.
+//
+EFI_RNG_ALGORITHM mSupportedRngAlgorithms[] = {
+ EFI_RNG_ALGORITHM_SP800_90_CTR_256_GUID,
+ EFI_RNG_ALGORITHM_RAW
+};
+
+/**
+ Returns information about the random number generation implementation.
+
+ @param[in] This A pointer to the EFI_RNG_PROTOCOL instance.
+ @param[in,out] RNGAlgorithmListSize On input, the size in bytes of RNGAlgorithmList.
+ On output with a return code of EFI_SUCCESS, the size
+ in bytes of the data returned in RNGAlgorithmList. On output
+ with a return code of EFI_BUFFER_TOO_SMALL,
+ the size of RNGAlgorithmList required to obtain the list.
+ @param[out] RNGAlgorithmList A caller-allocated memory buffer filled by the driver
+ with one EFI_RNG_ALGORITHM element for each supported
+ RNG algorithm. The list must not change across multiple
+ calls to the same driver. The first algorithm in the list
+ is the default algorithm for the driver.
+
+ @retval EFI_SUCCESS The RNG algorithm list was returned successfully.
+ @retval EFI_UNSUPPORTED The services is not supported by this driver.
+ @retval EFI_DEVICE_ERROR The list of algorithms could not be retrieved due to a
+ hardware or firmware error.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
+ @retval EFI_BUFFER_TOO_SMALL The buffer RNGAlgorithmList is too small to hold the result.
+
+**/
+EFI_STATUS
+EFIAPI
+RngGetInfo (
+ IN EFI_RNG_PROTOCOL *This,
+ IN OUT UINTN *RNGAlgorithmListSize,
+ OUT EFI_RNG_ALGORITHM *RNGAlgorithmList
+ )
+{
+ EFI_STATUS Status;
+ UINTN RequiredSize;
+
+ if ((This == NULL) || (RNGAlgorithmListSize == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ RequiredSize = sizeof (mSupportedRngAlgorithms);
+ if (*RNGAlgorithmListSize < RequiredSize) {
+ Status = EFI_BUFFER_TOO_SMALL;
+ } else {
+ //
+ // Return algorithm list supported by driver.
+ //
+ if (RNGAlgorithmList != NULL) {
+ CopyMem (RNGAlgorithmList, mSupportedRngAlgorithms, RequiredSize);
+ Status = EFI_SUCCESS;
+ } else {
+ Status = EFI_INVALID_PARAMETER;
+ }
+ }
+ *RNGAlgorithmListSize = RequiredSize;
+
+ return Status;
+}
+
+/**
+ Produces and returns an RNG value using either the default or specified RNG algorithm.
+
+ @param[in] This A pointer to the EFI_RNG_PROTOCOL instance.
+ @param[in] RNGAlgorithm A pointer to the EFI_RNG_ALGORITHM that identifies the RNG
+ algorithm to use. May be NULL in which case the function will
+ use its default RNG algorithm.
+ @param[in] RNGValueLength The length in bytes of the memory buffer pointed to by
+ RNGValue. The driver shall return exactly this numbers of bytes.
+ @param[out] RNGValue A caller-allocated memory buffer filled by the driver with the
+ resulting RNG value.
+
+ @retval EFI_SUCCESS The RNG value was returned successfully.
+ @retval EFI_UNSUPPORTED The algorithm specified by RNGAlgorithm is not supported by
+ this driver.
+ @retval EFI_DEVICE_ERROR An RNG value could not be retrieved due to a hardware or
+ firmware error.
+ @retval EFI_NOT_READY There is not enough random data available to satisfy the length
+ requested by RNGValueLength.
+ @retval EFI_INVALID_PARAMETER RNGValue is NULL or RNGValueLength is zero.
+
+**/
+EFI_STATUS
+EFIAPI
+RngGetRNG (
+ IN EFI_RNG_PROTOCOL *This,
+ IN EFI_RNG_ALGORITHM *RNGAlgorithm, OPTIONAL
+ IN UINTN RNGValueLength,
+ OUT UINT8 *RNGValue
+ )
+{
+ EFI_STATUS Status;
+
+ if ((RNGValueLength == 0) || (RNGValue == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = EFI_UNSUPPORTED;
+ if (RNGAlgorithm == NULL) {
+ //
+ // Use the default RNG algorithm if RNGAlgorithm is NULL.
+ //
+ RNGAlgorithm = &gEfiRngAlgorithmSp80090Ctr256Guid;
+ }
+
+ //
+ // NIST SP800-90-AES-CTR-256 supported by RDRAND
+ //
+ if (CompareGuid (RNGAlgorithm, &gEfiRngAlgorithmSp80090Ctr256Guid)) {
+ Status = RdRandGetBytes (RNGValueLength, RNGValue);
+ return Status;
+ }
+
+ //
+ // The "raw" algorithm is intended to provide entropy directly
+ //
+ if (CompareGuid (RNGAlgorithm, &gEfiRngAlgorithmRaw)) {
+ //
+ // When a DRBG is used on the output of a entropy source,
+ // its security level must be at least 256 bits according to UEFI Spec.
+ //
+ if (RNGValueLength < 32) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = RdRandGenerateEntropy (RNGValueLength, RNGValue);
+ return Status;
+ }
+
+ //
+ // Other algorithms were unsupported by this driver.
+ //
+ return Status;
+}
+
+//
+// The Random Number Generator (RNG) protocol
+//
+EFI_RNG_PROTOCOL mRngRdRand = {
+ RngGetInfo,
+ RngGetRNG
+};
+
+/**
+ The user Entry Point for the Random Number Generator (RNG) driver.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval EFI_NOT_SUPPORTED Platform does not support RNG.
+ @retval Other Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+RngDriverEntry (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+
+ //
+ // Verify RdRand support on Platform.
+ //
+ Status = IsRdRandSupported ();
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Install UEFI RNG (Random Number Generator) Protocol
+ //
+ Handle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiRngProtocolGuid,
+ &mRngRdRand,
+ NULL
+ );
+
+ return Status;
+}
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf new file mode 100644 index 0000000000..c84ab369bc --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf @@ -0,0 +1,75 @@ +## @file
+# Module that produces the UEFI Random Number Generator protocol.
+#
+# This module will leverage Intel Secure Key technology to produce the Random
+# Number Generator protocol, which is used to provide high-quality random numbers
+# for use in applications, or entropy for seeding other random number generators.
+# Refer to http://software.intel.com/en-us/articles/intel-digital-random-number
+# -generator-drng-software-implementation-guide/ for more information about Intel
+# Secure Key technology.
+#
+# Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = RngDxe
+ FILE_GUID = B981A835-6EE8-4f4c-AE0B-210AA0BFBF01
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = RngDriverEntry
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64
+#
+
+[Sources.common]
+ RngDxe.c
+ RdRand.c
+ AesCore.c
+
+[Sources.IA32]
+ IA32/RdRandWord.c
+ IA32/AsmRdRand.asm | MSFT
+ IA32/GccRdRand.c | GCC
+
+[Sources.X64]
+ X64/RdRandWord.c
+ X64/AsmRdRand.asm | MSFT
+ X64/GccRdRand.c | GCC
+
+[Packages]
+ MdePkg/MdePkg.dec
+ SecurityPkg/SecurityPkg.dec
+
+[LibraryClasses]
+ UefiLib
+ UefiBootServicesTableLib
+ BaseLib
+ DebugLib
+ UefiDriverEntryPoint
+ TimerLib
+
+[Guids]
+ gEfiRngAlgorithmSp80090Hash256Guid
+ gEfiRngAlgorithmSp80090Hmac256Guid
+ gEfiRngAlgorithmSp80090Ctr256Guid
+ gEfiRngAlgorithmX9313DesGuid
+ gEfiRngAlgorithmX931AesGuid
+ gEfiRngAlgorithmRaw
+
+[Protocols]
+ gEfiRngProtocolGuid ## PRODUCES
+
+[Depex]
+ TRUE
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm new file mode 100644 index 0000000000..8a4fe65d05 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/AsmRdRand.asm @@ -0,0 +1,83 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; AsmRdRand.Asm
+;
+; Abstract:
+;
+; Implementation for 16-, 32-, and 64-bit invocations of RDRAND instruction under 64bit platform.
+;
+; Notes:
+;
+; Visual Studio coding practices do not use inline asm since multiple compilers and
+; architectures are supported assembler not recognizing rdrand instruction so using DB's.
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+;------------------------------------------------------------------------------
+; Generate a 16 bit random number
+; Return TRUE if Rand generated successfully, or FALSE if not
+;
+; BOOLEAN EFIAPI RdRand16Step (UINT16 *Rand); RCX
+;------------------------------------------------------------------------------
+RdRand16Step PROC
+ ; rdrand ax ; generate a 16 bit RN into ax, CF=1 if RN generated ok, otherwise CF=0
+ db 0fh, 0c7h, 0f0h ; rdrand r16: "0f c7 /6 ModRM:r/m(w)"
+ jb rn16_ok ; jmp if CF=1
+ xor rax, rax ; reg=0 if CF=0
+ ret ; return with failure status
+rn16_ok:
+ mov [rcx], ax
+ mov rax, 1
+ ret
+RdRand16Step ENDP
+
+;------------------------------------------------------------------------------
+; Generate a 32 bit random number
+; Return TRUE if Rand generated successfully, or FALSE if not
+;
+; BOOLEAN EFIAPI RdRand32Step (UINT32 *Rand); RCX
+;------------------------------------------------------------------------------
+RdRand32Step PROC
+ ; rdrand eax ; generate a 32 bit RN into eax, CF=1 if RN generated ok, otherwise CF=0
+ db 0fh, 0c7h, 0f0h ; rdrand r32: "0f c7 /6 ModRM:r/m(w)"
+ jb rn32_ok ; jmp if CF=1
+ xor rax, rax ; reg=0 if CF=0
+ ret ; return with failure status
+rn32_ok:
+ mov [rcx], eax
+ mov rax, 1
+ ret
+RdRand32Step ENDP
+
+;------------------------------------------------------------------------------
+; Generate a 64 bit random number
+; Return TRUE if RN generated successfully, or FALSE if not
+;
+; BOOLEAN EFIAPI RdRand64Step (UINT64 *Random); RCX
+;------------------------------------------------------------------------------
+RdRand64Step PROC
+ ; rdrand rax ; generate a 64 bit RN into rax, CF=1 if RN generated ok, otherwise CF=0
+ db 048h, 0fh, 0c7h, 0f0h ; rdrand r64: "REX.W + 0F C7 /6 ModRM:r/m(w)"
+ jb rn64_ok ; jmp if CF=1
+ xor rax, rax ; reg=0 if CF=0
+ ret ; return with failure status
+rn64_ok:
+ mov [rcx], rax
+ mov rax, 1
+ ret
+RdRand64Step ENDP
+
+ END
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c new file mode 100644 index 0000000000..d28336de48 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/GccRdRand.c @@ -0,0 +1,95 @@ +/** @file
+ RDRAND Support Routines for GCC environment.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+/**
+ Generates a 16-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand16Step (
+ OUT UINT16 *Rand
+ )
+{
+ UINT8 Carry;
+
+ //
+ // Uses byte code for RDRAND instruction,
+ // in case that GCC version has no direct support on RDRAND assembly.
+ //
+ __asm__ __volatile__ (
+ ".byte 0x66; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1"
+ :"=a" (*Rand),
+ "=qm" (Carry)
+ );
+
+ return (BOOLEAN) Carry;
+}
+
+/**
+ Generates a 32-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand32Step (
+ OUT UINT32 *Rand
+ )
+{
+ UINT8 Carry;
+
+ __asm__ __volatile__ (
+ ".byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1"
+ :"=a" (*Rand),
+ "=qm" (Carry)
+ );
+
+ return (BOOLEAN) Carry;
+}
+
+/**
+ Generates a 64-bit random number through RDRAND instruction.
+
+ @param[out] Rand Buffer pointer to store the random result.
+
+ @retval TRUE RDRAND call was successful.
+ @retval FALSE Failed attempts to call RDRAND.
+
+**/
+BOOLEAN
+EFIAPI
+RdRand64Step (
+ OUT UINT64 *Rand
+ )
+{
+ UINT8 Carry;
+
+ __asm__ __volatile__ (
+ ".byte 0x48; .byte 0x0f; .byte 0xc7; .byte 0xf0; setc %1"
+ :"=a" (*Rand),
+ "=qm" (Carry)
+ );
+
+ return (BOOLEAN) Carry;
+}
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/X64/RdRandWord.c b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/RdRandWord.c new file mode 100644 index 0000000000..946e5babaa --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/X64/RdRandWord.c @@ -0,0 +1,70 @@ +/** @file
+ RDRAND Support Routines.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "RdRand.h"
+
+/**
+ Calls RDRAND to request a word-length random number.
+
+ @param[out] Rand Buffer pointer to store the random number.
+ @param[in] NeedRetry Determine whether or not to loop retry.
+
+ @retval EFI_SUCCESS Random word generation succeeded.
+ @retval EFI_NOT_READY Failed to request random word.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandWord (
+ OUT UINTN *Rand,
+ IN BOOLEAN NeedRetry
+ )
+{
+ return RdRand64 (Rand, NeedRetry);
+}
+
+/**
+ Calls RDRAND to request multiple word-length random numbers.
+
+ @param[in] Length Size of the buffer, in words, to fill with.
+ @param[out] RandBuffer Pointer to the buffer to store the random result.
+
+ @retval EFI_SUCCESS Random words generation succeeded.
+ @retval EFI_NOT_READY Failed to request random words.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGetWords (
+ IN UINTN Length,
+ OUT UINTN *RandBuffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 Index;
+
+ for (Index = 0; Index < Length; Index++) {
+ //
+ // Obtain one word-length (64-bit) Random Number with possible retry-loop.
+ //
+ Status = RdRand64 (RandBuffer, TRUE);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ RandBuffer++;
+ }
+
+ return EFI_SUCCESS;
+}
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