Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 244 insertions, 0 deletions

diff --git a/crypto/md5.c b/crypto/md5.c
new file mode 100644
index 00000000000..1ed45f9c263
--- /dev/null
+++ b/crypto/md5.c
@@ -0,0 +1,244 @@
+/* 
+ * Cryptographic API.
+ *
+ * MD5 Message Digest Algorithm (RFC1321).
+ *
+ * Derived from cryptoapi implementation, originally based on the
+ * public domain implementation written by Colin Plumb in 1993.
+ *
+ * Copyright (c) Cryptoapi developers.
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/crypto.h>
+#include <asm/byteorder.h>
+
+#define MD5_DIGEST_SIZE         16
+#define MD5_HMAC_BLOCK_SIZE     64
+#define MD5_BLOCK_WORDS         16
+#define MD5_HASH_WORDS          4
+
+#define F1(x, y, z)     (z ^ (x & (y ^ z)))
+#define F2(x, y, z)     F1(z, x, y)
+#define F3(x, y, z)     (x ^ y ^ z)
+#define F4(x, y, z)     (y ^ (x | ~z))
+
+#define MD5STEP(f, w, x, y, z, in, s) \
+        (w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x)
+
+struct md5_ctx {
+        u32 hash[MD5_HASH_WORDS];
+        u32 block[MD5_BLOCK_WORDS];
+        u64 byte_count;
+};
+
+static void md5_transform(u32 *hash, u32 const *in)
+{
+        u32 a, b, c, d;
+
+        a = hash[0];
+        b = hash[1];
+        c = hash[2];
+        d = hash[3];
+
+        MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+        MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+        MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+        MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+        MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+        MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+        MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+        MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+        MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+        MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+        MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+        MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+        MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+        MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+        MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+        MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+        MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+        MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+        MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+        MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+        MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+        MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+        MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+        MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+        MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+        MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+        MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+        MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+        MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+        MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+        MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+        MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+        MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+        MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+        MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+        MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+        MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+        MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+        MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+        MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+        MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+        MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+        MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+        MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+        MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+        MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+        MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+        MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+        MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+        MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+        MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+        MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+        MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+        MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+        MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+        MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+        MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+        MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+        MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+        MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+        MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+        MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+        MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+        MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+        hash[0] += a;
+        hash[1] += b;
+        hash[2] += c;
+        hash[3] += d;
+}
+
+/* XXX: this stuff can be optimized */
+static inline void le32_to_cpu_array(u32 *buf, unsigned int words)
+{
+        while (words--) {
+                __le32_to_cpus(buf);
+                buf++;
+        }
+}
+
+static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
+{
+        while (words--) {
+                __cpu_to_le32s(buf);
+                buf++;
+        }
+}
+
+static inline void md5_transform_helper(struct md5_ctx *ctx)
+{
+        le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32));
+        md5_transform(ctx->hash, ctx->block);
+}
+
+static void md5_init(void *ctx)
+{
+        struct md5_ctx *mctx = ctx;
+
+        mctx->hash[0] = 0x67452301;
+        mctx->hash[1] = 0xefcdab89;
+        mctx->hash[2] = 0x98badcfe;
+        mctx->hash[3] = 0x10325476;
+        mctx->byte_count = 0;
+}
+
+static void md5_update(void *ctx, const u8 *data, unsigned int len)
+{
+        struct md5_ctx *mctx = ctx;
+        const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
+
+        mctx->byte_count += len;
+
+        if (avail > len) {
+                memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+                       data, len);
+                return;
+        }
+
+        memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+               data, avail);
+
+        md5_transform_helper(mctx);
+        data += avail;
+        len -= avail;
+
+        while (len >= sizeof(mctx->block)) {
+                memcpy(mctx->block, data, sizeof(mctx->block));
+                md5_transform_helper(mctx);
+                data += sizeof(mctx->block);
+                len -= sizeof(mctx->block);
+        }
+
+        memcpy(mctx->block, data, len);
+}
+
+static void md5_final(void *ctx, u8 *out)
+{
+        struct md5_ctx *mctx = ctx;
+        const unsigned int offset = mctx->byte_count & 0x3f;
+        char *p = (char *)mctx->block + offset;
+        int padding = 56 - (offset + 1);
+
+        *p++ = 0x80;
+        if (padding < 0) {
+                memset(p, 0x00, padding + sizeof (u64));
+                md5_transform_helper(mctx);
+                p = (char *)mctx->block;
+                padding = 56;
+        }
+
+        memset(p, 0, padding);
+        mctx->block[14] = mctx->byte_count << 3;
+        mctx->block[15] = mctx->byte_count >> 29;
+        le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
+                          sizeof(u64)) / sizeof(u32));
+        md5_transform(mctx->hash, mctx->block);
+        cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(u32));
+        memcpy(out, mctx->hash, sizeof(mctx->hash));
+        memset(mctx, 0, sizeof(*mctx));
+}
+
+static struct crypto_alg alg = {
+        .cra_name       =       "md5",
+        .cra_flags      =       CRYPTO_ALG_TYPE_DIGEST,
+        .cra_blocksize  =       MD5_HMAC_BLOCK_SIZE,
+        .cra_ctxsize    =       sizeof(struct md5_ctx),
+        .cra_module     =       THIS_MODULE,
+        .cra_list       =       LIST_HEAD_INIT(alg.cra_list),
+        .cra_u          =       { .digest = {
+        .dia_digestsize =       MD5_DIGEST_SIZE,
+        .dia_init       =       md5_init,
+        .dia_update     =       md5_update,
+        .dia_final      =       md5_final } }
+};
+
+static int __init init(void)
+{
+        return crypto_register_alg(&alg);
+}
+
+static void __exit fini(void)
+{
+        crypto_unregister_alg(&alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MD5 Message Digest Algorithm");