1 files changed, 288 insertions, 0 deletions
diff --git a/contrib/libs/openssl/crypto/aes/aes_ige.c b/contrib/libs/openssl/crypto/aes/aes_ige.c
new file mode 100644
index 0000000000..804b3a723d
--- /dev/null
+++ b/contrib/libs/openssl/crypto/aes/aes_ige.c
@@ -0,0 +1,288 @@
+/*
+ * Copyright 2006-2020 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 "internal/cryptlib.h"
+
+#include <openssl/aes.h>
+#include "aes_local.h"
+
+/* XXX: probably some better way to do this */
+#if defined(__i386__) || defined(__x86_64__)
+# define UNALIGNED_MEMOPS_ARE_FAST 1
+#else
+# define UNALIGNED_MEMOPS_ARE_FAST 0
+#endif
+
+#define N_WORDS (AES_BLOCK_SIZE / sizeof(unsigned long))
+typedef struct {
+    unsigned long data[N_WORDS];
+#if defined(__GNUC__) && UNALIGNED_MEMOPS_ARE_FAST
+} aes_block_t __attribute((__aligned__(1)));
+#else
+} aes_block_t;
+#endif
+
+#if UNALIGNED_MEMOPS_ARE_FAST
+# define load_block(d, s)        (d) = *(const aes_block_t *)(s)
+# define store_block(d, s)       *(aes_block_t *)(d) = (s)
+#else
+# define load_block(d, s)        memcpy((d).data, (s), AES_BLOCK_SIZE)
+# define store_block(d, s)       memcpy((d), (s).data, AES_BLOCK_SIZE)
+#endif
+
+/* N.B. The IV for this mode is _twice_ the block size */
+
+void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
+                     size_t length, const AES_KEY *key,
+                     unsigned char *ivec, const int enc)
+{
+    size_t n;
+    size_t len = length;
+
+    if (length == 0)
+        return;
+
+    OPENSSL_assert(in && out && key && ivec);
+    OPENSSL_assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
+    OPENSSL_assert((length % AES_BLOCK_SIZE) == 0);
+
+    len = length / AES_BLOCK_SIZE;
+
+    if (AES_ENCRYPT == enc) {
+        if (in != out &&
+            (UNALIGNED_MEMOPS_ARE_FAST
+             || ((size_t)in | (size_t)out | (size_t)ivec) % sizeof(long) ==
+             0)) {
+            aes_block_t *ivp = (aes_block_t *) ivec;
+            aes_block_t *iv2p = (aes_block_t *) (ivec + AES_BLOCK_SIZE);
+
+            while (len) {
+                aes_block_t *inp = (aes_block_t *) in;
+                aes_block_t *outp = (aes_block_t *) out;
+
+                for (n = 0; n < N_WORDS; ++n)
+                    outp->data[n] = inp->data[n] ^ ivp->data[n];
+                AES_encrypt((unsigned char *)outp->data,
+                            (unsigned char *)outp->data, key);
+                for (n = 0; n < N_WORDS; ++n)
+                    outp->data[n] ^= iv2p->data[n];
+                ivp = outp;
+                iv2p = inp;
+                --len;
+                in += AES_BLOCK_SIZE;
+                out += AES_BLOCK_SIZE;
+            }
+            memcpy(ivec, ivp->data, AES_BLOCK_SIZE);
+            memcpy(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
+        } else {
+            aes_block_t tmp, tmp2;
+            aes_block_t iv;
+            aes_block_t iv2;
+
+            load_block(iv, ivec);
+            load_block(iv2, ivec + AES_BLOCK_SIZE);
+
+            while (len) {
+                load_block(tmp, in);
+                for (n = 0; n < N_WORDS; ++n)
+                    tmp2.data[n] = tmp.data[n] ^ iv.data[n];
+                AES_encrypt((unsigned char *)tmp2.data,
+                            (unsigned char *)tmp2.data, key);
+                for (n = 0; n < N_WORDS; ++n)
+                    tmp2.data[n] ^= iv2.data[n];
+                store_block(out, tmp2);
+                iv = tmp2;
+                iv2 = tmp;
+                --len;
+                in += AES_BLOCK_SIZE;
+                out += AES_BLOCK_SIZE;
+            }
+            memcpy(ivec, iv.data, AES_BLOCK_SIZE);
+            memcpy(ivec + AES_BLOCK_SIZE, iv2.data, AES_BLOCK_SIZE);
+        }
+    } else {
+        if (in != out &&
+            (UNALIGNED_MEMOPS_ARE_FAST
+             || ((size_t)in | (size_t)out | (size_t)ivec) % sizeof(long) ==
+             0)) {
+            aes_block_t *ivp = (aes_block_t *) ivec;
+            aes_block_t *iv2p = (aes_block_t *) (ivec + AES_BLOCK_SIZE);
+
+            while (len) {
+                aes_block_t tmp;
+                aes_block_t *inp = (aes_block_t *) in;
+                aes_block_t *outp = (aes_block_t *) out;
+
+                for (n = 0; n < N_WORDS; ++n)
+                    tmp.data[n] = inp->data[n] ^ iv2p->data[n];
+                AES_decrypt((unsigned char *)tmp.data,
+                            (unsigned char *)outp->data, key);
+                for (n = 0; n < N_WORDS; ++n)
+                    outp->data[n] ^= ivp->data[n];
+                ivp = inp;
+                iv2p = outp;
+                --len;
+                in += AES_BLOCK_SIZE;
+                out += AES_BLOCK_SIZE;
+            }
+            memcpy(ivec, ivp->data, AES_BLOCK_SIZE);
+            memcpy(ivec + AES_BLOCK_SIZE, iv2p->data, AES_BLOCK_SIZE);
+        } else {
+            aes_block_t tmp, tmp2;
+            aes_block_t iv;
+            aes_block_t iv2;
+
+            load_block(iv, ivec);
+            load_block(iv2, ivec + AES_BLOCK_SIZE);
+
+            while (len) {
+                load_block(tmp, in);
+                tmp2 = tmp;
+                for (n = 0; n < N_WORDS; ++n)
+                    tmp.data[n] ^= iv2.data[n];
+                AES_decrypt((unsigned char *)tmp.data,
+                            (unsigned char *)tmp.data, key);
+                for (n = 0; n < N_WORDS; ++n)
+                    tmp.data[n] ^= iv.data[n];
+                store_block(out, tmp);
+                iv = tmp2;
+                iv2 = tmp;
+                --len;
+                in += AES_BLOCK_SIZE;
+                out += AES_BLOCK_SIZE;
+            }
+            memcpy(ivec, iv.data, AES_BLOCK_SIZE);
+            memcpy(ivec + AES_BLOCK_SIZE, iv2.data, AES_BLOCK_SIZE);
+        }
+    }
+}
+
+/*
+ * Note that its effectively impossible to do biIGE in anything other
+ * than a single pass, so no provision is made for chaining.
+ */
+
+/* N.B. The IV for this mode is _four times_ the block size */
+
+void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
+                        size_t length, const AES_KEY *key,
+                        const AES_KEY *key2, const unsigned char *ivec,
+                        const int enc)
+{
+    size_t n;
+    size_t len = length;
+    unsigned char tmp[AES_BLOCK_SIZE];
+    unsigned char tmp2[AES_BLOCK_SIZE];
+    unsigned char tmp3[AES_BLOCK_SIZE];
+    unsigned char prev[AES_BLOCK_SIZE];
+    const unsigned char *iv;
+    const unsigned char *iv2;
+
+    OPENSSL_assert(in && out && key && ivec);
+    OPENSSL_assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
+    OPENSSL_assert((length % AES_BLOCK_SIZE) == 0);
+
+    if (AES_ENCRYPT == enc) {
+        /*
+         * XXX: Do a separate case for when in != out (strictly should check
+         * for overlap, too)
+         */
+
+        /* First the forward pass */
+        iv = ivec;
+        iv2 = ivec + AES_BLOCK_SIZE;
+        while (len >= AES_BLOCK_SIZE) {
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] = in[n] ^ iv[n];
+            AES_encrypt(out, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv2[n];
+            iv = out;
+            memcpy(prev, in, AES_BLOCK_SIZE);
+            iv2 = prev;
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+
+        /* And now backwards */
+        iv = ivec + AES_BLOCK_SIZE * 2;
+        iv2 = ivec + AES_BLOCK_SIZE * 3;
+        len = length;
+        while (len >= AES_BLOCK_SIZE) {
+            out -= AES_BLOCK_SIZE;
+            /*
+             * XXX: reduce copies by alternating between buffers
+             */
+            memcpy(tmp, out, AES_BLOCK_SIZE);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv[n];
+            /*
+             * hexdump(stdout, "out ^ iv", out, AES_BLOCK_SIZE);
+             */
+            AES_encrypt(out, out, key);
+            /*
+             * hexdump(stdout,"enc", out, AES_BLOCK_SIZE);
+             */
+            /*
+             * hexdump(stdout,"iv2", iv2, AES_BLOCK_SIZE);
+             */
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv2[n];
+            /*
+             * hexdump(stdout,"out", out, AES_BLOCK_SIZE);
+             */
+            iv = out;
+            memcpy(prev, tmp, AES_BLOCK_SIZE);
+            iv2 = prev;
+            len -= AES_BLOCK_SIZE;
+        }
+    } else {
+        /* First backwards */
+        iv = ivec + AES_BLOCK_SIZE * 2;
+        iv2 = ivec + AES_BLOCK_SIZE * 3;
+        in += length;
+        out += length;
+        while (len >= AES_BLOCK_SIZE) {
+            in -= AES_BLOCK_SIZE;
+            out -= AES_BLOCK_SIZE;
+            memcpy(tmp, in, AES_BLOCK_SIZE);
+            memcpy(tmp2, in, AES_BLOCK_SIZE);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                tmp[n] ^= iv2[n];
+            AES_decrypt(tmp, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv[n];
+            memcpy(tmp3, tmp2, AES_BLOCK_SIZE);
+            iv = tmp3;
+            iv2 = out;
+            len -= AES_BLOCK_SIZE;
+        }
+
+        /* And now forwards */
+        iv = ivec;
+        iv2 = ivec + AES_BLOCK_SIZE;
+        len = length;
+        while (len >= AES_BLOCK_SIZE) {
+            memcpy(tmp, out, AES_BLOCK_SIZE);
+            memcpy(tmp2, out, AES_BLOCK_SIZE);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                tmp[n] ^= iv2[n];
+            AES_decrypt(tmp, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv[n];
+            memcpy(tmp3, tmp2, AES_BLOCK_SIZE);
+            iv = tmp3;
+            iv2 = out;
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+    }
+}