initial/final commitHEADmaster

1 files changed, 747 insertions, 0 deletions

diff --git a/openssl-1.1.0h/engines/e_padlock.c b/openssl-1.1.0h/engines/e_padlock.c
new file mode 100644
index 0000000..b86f165
--- /dev/null
+++ b/openssl-1.1.0h/engines/e_padlock.c
@@ -0,0 +1,747 @@
+/*
+ * Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/opensslconf.h>
+#include <openssl/crypto.h>
+#include <openssl/engine.h>
+#include <openssl/evp.h>
+#include <openssl/aes.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+#include <openssl/modes.h>
+
+#ifndef OPENSSL_NO_HW
+# ifndef OPENSSL_NO_HW_PADLOCK
+
+/* Attempt to have a single source for both 0.9.7 and 0.9.8 :-) */
+#  if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
+#   ifndef OPENSSL_NO_DYNAMIC_ENGINE
+#    define DYNAMIC_ENGINE
+#   endif
+#  elif (OPENSSL_VERSION_NUMBER >= 0x00907000L)
+#   ifdef ENGINE_DYNAMIC_SUPPORT
+#    define DYNAMIC_ENGINE
+#   endif
+#  else
+#   error "Only OpenSSL >= 0.9.7 is supported"
+#  endif
+
+/*
+ * VIA PadLock AES is available *ONLY* on some x86 CPUs. Not only that it
+ * doesn't exist elsewhere, but it even can't be compiled on other platforms!
+ */
+
+#  undef COMPILE_HW_PADLOCK
+#  if !defined(I386_ONLY) && defined(PADLOCK_ASM)
+#   define COMPILE_HW_PADLOCK
+#   ifdef OPENSSL_NO_DYNAMIC_ENGINE
+static ENGINE *ENGINE_padlock(void);
+#   endif
+#  endif
+
+#  ifdef OPENSSL_NO_DYNAMIC_ENGINE
+void engine_load_padlock_int(void);
+void engine_load_padlock_int(void)
+{
+/* On non-x86 CPUs it just returns. */
+#   ifdef COMPILE_HW_PADLOCK
+    ENGINE *toadd = ENGINE_padlock();
+    if (!toadd)
+        return;
+    ENGINE_add(toadd);
+    ENGINE_free(toadd);
+    ERR_clear_error();
+#   endif
+}
+
+#  endif
+
+#  ifdef COMPILE_HW_PADLOCK
+
+/* Function for ENGINE detection and control */
+static int padlock_available(void);
+static int padlock_init(ENGINE *e);
+
+/* RNG Stuff */
+static RAND_METHOD padlock_rand;
+
+/* Cipher Stuff */
+static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
+                           const int **nids, int nid);
+
+/* Engine names */
+static const char *padlock_id = "padlock";
+static char padlock_name[100];
+
+/* Available features */
+static int padlock_use_ace = 0; /* Advanced Cryptography Engine */
+static int padlock_use_rng = 0; /* Random Number Generator */
+
+/* ===== Engine "management" functions ===== */
+
+/* Prepare the ENGINE structure for registration */
+static int padlock_bind_helper(ENGINE *e)
+{
+    /* Check available features */
+    padlock_available();
+
+    /*
+     * RNG is currently disabled for reasons discussed in commentary just
+     * before padlock_rand_bytes function.
+     */
+    padlock_use_rng = 0;
+
+    /* Generate a nice engine name with available features */
+    BIO_snprintf(padlock_name, sizeof(padlock_name),
+                 "VIA PadLock (%s, %s)",
+                 padlock_use_rng ? "RNG" : "no-RNG",
+                 padlock_use_ace ? "ACE" : "no-ACE");
+
+    /* Register everything or return with an error */
+    if (!ENGINE_set_id(e, padlock_id) ||
+        !ENGINE_set_name(e, padlock_name) ||
+        !ENGINE_set_init_function(e, padlock_init) ||
+        (padlock_use_ace && !ENGINE_set_ciphers(e, padlock_ciphers)) ||
+        (padlock_use_rng && !ENGINE_set_RAND(e, &padlock_rand))) {
+        return 0;
+    }
+
+    /* Everything looks good */
+    return 1;
+}
+
+#   ifdef OPENSSL_NO_DYNAMIC_ENGINE
+/* Constructor */
+static ENGINE *ENGINE_padlock(void)
+{
+    ENGINE *eng = ENGINE_new();
+
+    if (eng == NULL) {
+        return NULL;
+    }
+
+    if (!padlock_bind_helper(eng)) {
+        ENGINE_free(eng);
+        return NULL;
+    }
+
+    return eng;
+}
+#   endif
+
+/* Check availability of the engine */
+static int padlock_init(ENGINE *e)
+{
+    return (padlock_use_rng || padlock_use_ace);
+}
+
+/*
+ * This stuff is needed if this ENGINE is being compiled into a
+ * self-contained shared-library.
+ */
+#   ifdef DYNAMIC_ENGINE
+static int padlock_bind_fn(ENGINE *e, const char *id)
+{
+    if (id && (strcmp(id, padlock_id) != 0)) {
+        return 0;
+    }
+
+    if (!padlock_bind_helper(e)) {
+        return 0;
+    }
+
+    return 1;
+}
+
+IMPLEMENT_DYNAMIC_CHECK_FN()
+IMPLEMENT_DYNAMIC_BIND_FN(padlock_bind_fn)
+#   endif                       /* DYNAMIC_ENGINE */
+/* ===== Here comes the "real" engine ===== */
+
+/* Some AES-related constants */
+#   define AES_BLOCK_SIZE          16
+#   define AES_KEY_SIZE_128        16
+#   define AES_KEY_SIZE_192        24
+#   define AES_KEY_SIZE_256        32
+    /*
+     * Here we store the status information relevant to the current context.
+     */
+    /*
+     * BIG FAT WARNING: Inline assembler in PADLOCK_XCRYPT_ASM() depends on
+     * the order of items in this structure.  Don't blindly modify, reorder,
+     * etc!
+     */
+struct padlock_cipher_data {
+    unsigned char iv[AES_BLOCK_SIZE]; /* Initialization vector */
+    union {
+        unsigned int pad[4];
+        struct {
+            int rounds:4;
+            int dgst:1;         /* n/a in C3 */
+            int align:1;        /* n/a in C3 */
+            int ciphr:1;        /* n/a in C3 */
+            unsigned int keygen:1;
+            int interm:1;
+            unsigned int encdec:1;
+            int ksize:2;
+        } b;
+    } cword;                    /* Control word */
+    AES_KEY ks;                 /* Encryption key */
+};
+
+/* Interface to assembler module */
+unsigned int padlock_capability();
+void padlock_key_bswap(AES_KEY *key);
+void padlock_verify_context(struct padlock_cipher_data *ctx);
+void padlock_reload_key();
+void padlock_aes_block(void *out, const void *inp,
+                       struct padlock_cipher_data *ctx);
+int padlock_ecb_encrypt(void *out, const void *inp,
+                        struct padlock_cipher_data *ctx, size_t len);
+int padlock_cbc_encrypt(void *out, const void *inp,
+                        struct padlock_cipher_data *ctx, size_t len);
+int padlock_cfb_encrypt(void *out, const void *inp,
+                        struct padlock_cipher_data *ctx, size_t len);
+int padlock_ofb_encrypt(void *out, const void *inp,
+                        struct padlock_cipher_data *ctx, size_t len);
+int padlock_ctr32_encrypt(void *out, const void *inp,
+                          struct padlock_cipher_data *ctx, size_t len);
+int padlock_xstore(void *out, int edx);
+void padlock_sha1_oneshot(void *ctx, const void *inp, size_t len);
+void padlock_sha1(void *ctx, const void *inp, size_t len);
+void padlock_sha256_oneshot(void *ctx, const void *inp, size_t len);
+void padlock_sha256(void *ctx, const void *inp, size_t len);
+
+/*
+ * Load supported features of the CPU to see if the PadLock is available.
+ */
+static int padlock_available(void)
+{
+    unsigned int edx = padlock_capability();
+
+    /* Fill up some flags */
+    padlock_use_ace = ((edx & (0x3 << 6)) == (0x3 << 6));
+    padlock_use_rng = ((edx & (0x3 << 2)) == (0x3 << 2));
+
+    return padlock_use_ace + padlock_use_rng;
+}
+
+/* ===== AES encryption/decryption ===== */
+
+#   if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb)
+#    define NID_aes_128_cfb NID_aes_128_cfb128
+#   endif
+
+#   if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb)
+#    define NID_aes_128_ofb NID_aes_128_ofb128
+#   endif
+
+#   if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb)
+#    define NID_aes_192_cfb NID_aes_192_cfb128
+#   endif
+
+#   if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb)
+#    define NID_aes_192_ofb NID_aes_192_ofb128
+#   endif
+
+#   if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb)
+#    define NID_aes_256_cfb NID_aes_256_cfb128
+#   endif
+
+#   if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb)
+#    define NID_aes_256_ofb NID_aes_256_ofb128
+#   endif
+
+/* List of supported ciphers. */
+static const int padlock_cipher_nids[] = {
+    NID_aes_128_ecb,
+    NID_aes_128_cbc,
+    NID_aes_128_cfb,
+    NID_aes_128_ofb,
+    NID_aes_128_ctr,
+
+    NID_aes_192_ecb,
+    NID_aes_192_cbc,
+    NID_aes_192_cfb,
+    NID_aes_192_ofb,
+    NID_aes_192_ctr,
+
+    NID_aes_256_ecb,
+    NID_aes_256_cbc,
+    NID_aes_256_cfb,
+    NID_aes_256_ofb,
+    NID_aes_256_ctr
+};
+
+static int padlock_cipher_nids_num = (sizeof(padlock_cipher_nids) /
+                                      sizeof(padlock_cipher_nids[0]));
+
+/* Function prototypes ... */
+static int padlock_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                                const unsigned char *iv, int enc);
+
+#   define NEAREST_ALIGNED(ptr) ( (unsigned char *)(ptr) +         \
+        ( (0x10 - ((size_t)(ptr) & 0x0F)) & 0x0F )      )
+#   define ALIGNED_CIPHER_DATA(ctx) ((struct padlock_cipher_data *)\
+        NEAREST_ALIGNED(EVP_CIPHER_CTX_get_cipher_data(ctx)))
+
+static int
+padlock_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
+                   const unsigned char *in_arg, size_t nbytes)
+{
+    return padlock_ecb_encrypt(out_arg, in_arg,
+                               ALIGNED_CIPHER_DATA(ctx), nbytes);
+}
+
+static int
+padlock_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
+                   const unsigned char *in_arg, size_t nbytes)
+{
+    struct padlock_cipher_data *cdata = ALIGNED_CIPHER_DATA(ctx);
+    int ret;
+
+    memcpy(cdata->iv, EVP_CIPHER_CTX_iv(ctx), AES_BLOCK_SIZE);
+    if ((ret = padlock_cbc_encrypt(out_arg, in_arg, cdata, nbytes)))
+        memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), cdata->iv, AES_BLOCK_SIZE);
+    return ret;
+}
+
+static int
+padlock_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
+                   const unsigned char *in_arg, size_t nbytes)
+{
+    struct padlock_cipher_data *cdata = ALIGNED_CIPHER_DATA(ctx);
+    size_t chunk;
+
+    if ((chunk = EVP_CIPHER_CTX_num(ctx))) {   /* borrow chunk variable */
+        unsigned char *ivp = EVP_CIPHER_CTX_iv_noconst(ctx);
+
+        if (chunk >= AES_BLOCK_SIZE)
+            return 0;           /* bogus value */
+
+        if (EVP_CIPHER_CTX_encrypting(ctx))
+            while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
+                ivp[chunk] = *(out_arg++) = *(in_arg++) ^ ivp[chunk];
+                chunk++, nbytes--;
+        } else
+            while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
+                unsigned char c = *(in_arg++);
+                *(out_arg++) = c ^ ivp[chunk];
+                ivp[chunk++] = c, nbytes--;
+            }
+
+        EVP_CIPHER_CTX_set_num(ctx, chunk % AES_BLOCK_SIZE);
+    }
+
+    if (nbytes == 0)
+        return 1;
+
+    memcpy(cdata->iv, EVP_CIPHER_CTX_iv(ctx), AES_BLOCK_SIZE);
+
+    if ((chunk = nbytes & ~(AES_BLOCK_SIZE - 1))) {
+        if (!padlock_cfb_encrypt(out_arg, in_arg, cdata, chunk))
+            return 0;
+        nbytes -= chunk;
+    }
+
+    if (nbytes) {
+        unsigned char *ivp = cdata->iv;
+
+        out_arg += chunk;
+        in_arg += chunk;
+        EVP_CIPHER_CTX_set_num(ctx, nbytes);
+        if (cdata->cword.b.encdec) {
+            cdata->cword.b.encdec = 0;
+            padlock_reload_key();
+            padlock_aes_block(ivp, ivp, cdata);
+            cdata->cword.b.encdec = 1;
+            padlock_reload_key();
+            while (nbytes) {
+                unsigned char c = *(in_arg++);
+                *(out_arg++) = c ^ *ivp;
+                *(ivp++) = c, nbytes--;
+            }
+        } else {
+            padlock_reload_key();
+            padlock_aes_block(ivp, ivp, cdata);
+            padlock_reload_key();
+            while (nbytes) {
+                *ivp = *(out_arg++) = *(in_arg++) ^ *ivp;
+                ivp++, nbytes--;
+            }
+        }
+    }
+
+    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), cdata->iv, AES_BLOCK_SIZE);
+
+    return 1;
+}
+
+static int
+padlock_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
+                   const unsigned char *in_arg, size_t nbytes)
+{
+    struct padlock_cipher_data *cdata = ALIGNED_CIPHER_DATA(ctx);
+    size_t chunk;
+
+    /*
+     * ctx->num is maintained in byte-oriented modes, such as CFB and OFB...
+     */
+    if ((chunk = EVP_CIPHER_CTX_num(ctx))) {   /* borrow chunk variable */
+        unsigned char *ivp = EVP_CIPHER_CTX_iv_noconst(ctx);
+
+        if (chunk >= AES_BLOCK_SIZE)
+            return 0;           /* bogus value */
+
+        while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
+            *(out_arg++) = *(in_arg++) ^ ivp[chunk];
+            chunk++, nbytes--;
+        }
+
+        EVP_CIPHER_CTX_set_num(ctx, chunk % AES_BLOCK_SIZE);
+    }
+
+    if (nbytes == 0)
+        return 1;
+
+    memcpy(cdata->iv, EVP_CIPHER_CTX_iv(ctx), AES_BLOCK_SIZE);
+
+    if ((chunk = nbytes & ~(AES_BLOCK_SIZE - 1))) {
+        if (!padlock_ofb_encrypt(out_arg, in_arg, cdata, chunk))
+            return 0;
+        nbytes -= chunk;
+    }
+
+    if (nbytes) {
+        unsigned char *ivp = cdata->iv;
+
+        out_arg += chunk;
+        in_arg += chunk;
+        EVP_CIPHER_CTX_set_num(ctx, nbytes);
+        padlock_reload_key();   /* empirically found */
+        padlock_aes_block(ivp, ivp, cdata);
+        padlock_reload_key();   /* empirically found */
+        while (nbytes) {
+            *(out_arg++) = *(in_arg++) ^ *ivp;
+            ivp++, nbytes--;
+        }
+    }
+
+    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), cdata->iv, AES_BLOCK_SIZE);
+
+    return 1;
+}
+
+static void padlock_ctr32_encrypt_glue(const unsigned char *in,
+                                       unsigned char *out, size_t blocks,
+                                       struct padlock_cipher_data *ctx,
+                                       const unsigned char *ivec)
+{
+    memcpy(ctx->iv, ivec, AES_BLOCK_SIZE);
+    padlock_ctr32_encrypt(out, in, ctx, AES_BLOCK_SIZE * blocks);
+}
+
+static int
+padlock_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
+                   const unsigned char *in_arg, size_t nbytes)
+{
+    struct padlock_cipher_data *cdata = ALIGNED_CIPHER_DATA(ctx);
+    unsigned int num = EVP_CIPHER_CTX_num(ctx);
+
+    CRYPTO_ctr128_encrypt_ctr32(in_arg, out_arg, nbytes,
+                                cdata, EVP_CIPHER_CTX_iv_noconst(ctx),
+                                EVP_CIPHER_CTX_buf_noconst(ctx), &num,
+                                (ctr128_f) padlock_ctr32_encrypt_glue);
+
+    EVP_CIPHER_CTX_set_num(ctx, (size_t)num);
+    return 1;
+}
+
+#   define EVP_CIPHER_block_size_ECB       AES_BLOCK_SIZE
+#   define EVP_CIPHER_block_size_CBC       AES_BLOCK_SIZE
+#   define EVP_CIPHER_block_size_OFB       1
+#   define EVP_CIPHER_block_size_CFB       1
+#   define EVP_CIPHER_block_size_CTR       1
+
+/*
+ * Declaring so many ciphers by hand would be a pain. Instead introduce a bit
+ * of preprocessor magic :-)
+ */
+#   define DECLARE_AES_EVP(ksize,lmode,umode)      \
+static EVP_CIPHER *_hidden_aes_##ksize##_##lmode = NULL; \
+static const EVP_CIPHER *padlock_aes_##ksize##_##lmode(void) \
+{                                                                       \
+    if (_hidden_aes_##ksize##_##lmode == NULL                           \
+        && ((_hidden_aes_##ksize##_##lmode =                            \
+             EVP_CIPHER_meth_new(NID_aes_##ksize##_##lmode,             \
+                                 EVP_CIPHER_block_size_##umode,         \
+                                 AES_KEY_SIZE_##ksize)) == NULL         \
+            || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_##ksize##_##lmode, \
+                                              AES_BLOCK_SIZE)           \
+            || !EVP_CIPHER_meth_set_flags(_hidden_aes_##ksize##_##lmode, \
+                                          0 | EVP_CIPH_##umode##_MODE)  \
+            || !EVP_CIPHER_meth_set_init(_hidden_aes_##ksize##_##lmode, \
+                                         padlock_aes_init_key)          \
+            || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_##ksize##_##lmode, \
+                                              padlock_##lmode##_cipher) \
+            || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_##ksize##_##lmode, \
+                                                  sizeof(struct padlock_cipher_data) + 16) \
+            || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_aes_##ksize##_##lmode, \
+                                                    EVP_CIPHER_set_asn1_iv) \
+            || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_aes_##ksize##_##lmode, \
+                                                    EVP_CIPHER_get_asn1_iv))) { \
+        EVP_CIPHER_meth_free(_hidden_aes_##ksize##_##lmode);            \
+        _hidden_aes_##ksize##_##lmode = NULL;                           \
+    }                                                                   \
+    return _hidden_aes_##ksize##_##lmode;                               \
+}
+
+DECLARE_AES_EVP(128, ecb, ECB)
+DECLARE_AES_EVP(128, cbc, CBC)
+DECLARE_AES_EVP(128, cfb, CFB)
+DECLARE_AES_EVP(128, ofb, OFB)
+DECLARE_AES_EVP(128, ctr, CTR)
+
+DECLARE_AES_EVP(192, ecb, ECB)
+DECLARE_AES_EVP(192, cbc, CBC)
+DECLARE_AES_EVP(192, cfb, CFB)
+DECLARE_AES_EVP(192, ofb, OFB)
+DECLARE_AES_EVP(192, ctr, CTR)
+
+DECLARE_AES_EVP(256, ecb, ECB)
+DECLARE_AES_EVP(256, cbc, CBC)
+DECLARE_AES_EVP(256, cfb, CFB)
+DECLARE_AES_EVP(256, ofb, OFB)
+DECLARE_AES_EVP(256, ctr, CTR)
+
+static int
+padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids,
+                int nid)
+{
+    /* No specific cipher => return a list of supported nids ... */
+    if (!cipher) {
+        *nids = padlock_cipher_nids;
+        return padlock_cipher_nids_num;
+    }
+
+    /* ... or the requested "cipher" otherwise */
+    switch (nid) {
+    case NID_aes_128_ecb:
+        *cipher = padlock_aes_128_ecb();
+        break;
+    case NID_aes_128_cbc:
+        *cipher = padlock_aes_128_cbc();
+        break;
+    case NID_aes_128_cfb:
+        *cipher = padlock_aes_128_cfb();
+        break;
+    case NID_aes_128_ofb:
+        *cipher = padlock_aes_128_ofb();
+        break;
+    case NID_aes_128_ctr:
+        *cipher = padlock_aes_128_ctr();
+        break;
+
+    case NID_aes_192_ecb:
+        *cipher = padlock_aes_192_ecb();
+        break;
+    case NID_aes_192_cbc:
+        *cipher = padlock_aes_192_cbc();
+        break;
+    case NID_aes_192_cfb:
+        *cipher = padlock_aes_192_cfb();
+        break;
+    case NID_aes_192_ofb:
+        *cipher = padlock_aes_192_ofb();
+        break;
+    case NID_aes_192_ctr:
+        *cipher = padlock_aes_192_ctr();
+        break;
+
+    case NID_aes_256_ecb:
+        *cipher = padlock_aes_256_ecb();
+        break;
+    case NID_aes_256_cbc:
+        *cipher = padlock_aes_256_cbc();
+        break;
+    case NID_aes_256_cfb:
+        *cipher = padlock_aes_256_cfb();
+        break;
+    case NID_aes_256_ofb:
+        *cipher = padlock_aes_256_ofb();
+        break;
+    case NID_aes_256_ctr:
+        *cipher = padlock_aes_256_ctr();
+        break;
+
+    default:
+        /* Sorry, we don't support this NID */
+        *cipher = NULL;
+        return 0;
+    }
+
+    return 1;
+}
+
+/* Prepare the encryption key for PadLock usage */
+static int
+padlock_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                     const unsigned char *iv, int enc)
+{
+    struct padlock_cipher_data *cdata;
+    int key_len = EVP_CIPHER_CTX_key_length(ctx) * 8;
+    unsigned long mode = EVP_CIPHER_CTX_mode(ctx);
+
+    if (key == NULL)
+        return 0;               /* ERROR */
+
+    cdata = ALIGNED_CIPHER_DATA(ctx);
+    memset(cdata, 0, sizeof(*cdata));
+
+    /* Prepare Control word. */
+    if (mode == EVP_CIPH_OFB_MODE || mode == EVP_CIPH_CTR_MODE)
+        cdata->cword.b.encdec = 0;
+    else
+        cdata->cword.b.encdec = (EVP_CIPHER_CTX_encrypting(ctx) == 0);
+    cdata->cword.b.rounds = 10 + (key_len - 128) / 32;
+    cdata->cword.b.ksize = (key_len - 128) / 64;
+
+    switch (key_len) {
+    case 128:
+        /*
+         * PadLock can generate an extended key for AES128 in hardware
+         */
+        memcpy(cdata->ks.rd_key, key, AES_KEY_SIZE_128);
+        cdata->cword.b.keygen = 0;
+        break;
+
+    case 192:
+    case 256:
+        /*
+         * Generate an extended AES key in software. Needed for AES192/AES256
+         */
+        /*
+         * Well, the above applies to Stepping 8 CPUs and is listed as
+         * hardware errata. They most likely will fix it at some point and
+         * then a check for stepping would be due here.
+         */
+        if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
+            && !enc)
+            AES_set_decrypt_key(key, key_len, &cdata->ks);
+        else
+            AES_set_encrypt_key(key, key_len, &cdata->ks);
+#   ifndef AES_ASM
+        /*
+         * OpenSSL C functions use byte-swapped extended key.
+         */
+        padlock_key_bswap(&cdata->ks);
+#   endif
+        cdata->cword.b.keygen = 1;
+        break;
+
+    default:
+        /* ERROR */
+        return 0;
+    }
+
+    /*
+     * This is done to cover for cases when user reuses the
+     * context for new key. The catch is that if we don't do
+     * this, padlock_eas_cipher might proceed with old key...
+     */
+    padlock_reload_key();
+
+    return 1;
+}
+
+/* ===== Random Number Generator ===== */
+/*
+ * This code is not engaged. The reason is that it does not comply
+ * with recommendations for VIA RNG usage for secure applications
+ * (posted at http://www.via.com.tw/en/viac3/c3.jsp) nor does it
+ * provide meaningful error control...
+ */
+/*
+ * Wrapper that provides an interface between the API and the raw PadLock
+ * RNG
+ */
+static int padlock_rand_bytes(unsigned char *output, int count)
+{
+    unsigned int eax, buf;
+
+    while (count >= 8) {
+        eax = padlock_xstore(output, 0);
+        if (!(eax & (1 << 6)))
+            return 0;           /* RNG disabled */
+        /* this ---vv--- covers DC bias, Raw Bits and String Filter */
+        if (eax & (0x1F << 10))
+            return 0;
+        if ((eax & 0x1F) == 0)
+            continue;           /* no data, retry... */
+        if ((eax & 0x1F) != 8)
+            return 0;           /* fatal failure...  */
+        output += 8;
+        count -= 8;
+    }
+    while (count > 0) {
+        eax = padlock_xstore(&buf, 3);
+        if (!(eax & (1 << 6)))
+            return 0;           /* RNG disabled */
+        /* this ---vv--- covers DC bias, Raw Bits and String Filter */
+        if (eax & (0x1F << 10))
+            return 0;
+        if ((eax & 0x1F) == 0)
+            continue;           /* no data, retry... */
+        if ((eax & 0x1F) != 1)
+            return 0;           /* fatal failure...  */
+        *output++ = (unsigned char)buf;
+        count--;
+    }
+    OPENSSL_cleanse(&buf, sizeof(buf));
+
+    return 1;
+}
+
+/* Dummy but necessary function */
+static int padlock_rand_status(void)
+{
+    return 1;
+}
+
+/* Prepare structure for registration */
+static RAND_METHOD padlock_rand = {
+    NULL,                       /* seed */
+    padlock_rand_bytes,         /* bytes */
+    NULL,                       /* cleanup */
+    NULL,                       /* add */
+    padlock_rand_bytes,         /* pseudorand */
+    padlock_rand_status,        /* rand status */
+};
+
+#  endif                        /* COMPILE_HW_PADLOCK */
+# endif                         /* !OPENSSL_NO_HW_PADLOCK */
+#endif                          /* !OPENSSL_NO_HW */
+
+#if defined(OPENSSL_NO_HW) || defined(OPENSSL_NO_HW_PADLOCK) \
+        || !defined(COMPILE_HW_PADLOCK)
+# ifndef OPENSSL_NO_DYNAMIC_ENGINE
+OPENSSL_EXPORT
+    int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
+OPENSSL_EXPORT
+    int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns)
+{
+    return 0;
+}
+
+IMPLEMENT_DYNAMIC_CHECK_FN()
+# endif
+#endif