Welcome to mirror list, hosted at ThFree Co, Russian Federation.

github.com/mRemoteNG/PuTTYNG.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/sshmd5.c
diff options
context:
space:
mode:
Diffstat (limited to 'sshmd5.c')
-rw-r--r--sshmd5.c245
1 files changed, 0 insertions, 245 deletions
diff --git a/sshmd5.c b/sshmd5.c
deleted file mode 100644
index 9155c99e..00000000
--- a/sshmd5.c
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * MD5 implementation for PuTTY. Written directly from the spec by
- * Simon Tatham.
- */
-
-#include <assert.h>
-#include "ssh.h"
-
-static const uint32_t md5_initial_state[] = {
- 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476,
-};
-
-static const struct md5_round_constant {
- uint32_t addition, rotation, msg_index;
-} md5_round_constants[] = {
- { 0xd76aa478, 7, 0 }, { 0xe8c7b756, 12, 1 },
- { 0x242070db, 17, 2 }, { 0xc1bdceee, 22, 3 },
- { 0xf57c0faf, 7, 4 }, { 0x4787c62a, 12, 5 },
- { 0xa8304613, 17, 6 }, { 0xfd469501, 22, 7 },
- { 0x698098d8, 7, 8 }, { 0x8b44f7af, 12, 9 },
- { 0xffff5bb1, 17, 10 }, { 0x895cd7be, 22, 11 },
- { 0x6b901122, 7, 12 }, { 0xfd987193, 12, 13 },
- { 0xa679438e, 17, 14 }, { 0x49b40821, 22, 15 },
- { 0xf61e2562, 5, 1 }, { 0xc040b340, 9, 6 },
- { 0x265e5a51, 14, 11 }, { 0xe9b6c7aa, 20, 0 },
- { 0xd62f105d, 5, 5 }, { 0x02441453, 9, 10 },
- { 0xd8a1e681, 14, 15 }, { 0xe7d3fbc8, 20, 4 },
- { 0x21e1cde6, 5, 9 }, { 0xc33707d6, 9, 14 },
- { 0xf4d50d87, 14, 3 }, { 0x455a14ed, 20, 8 },
- { 0xa9e3e905, 5, 13 }, { 0xfcefa3f8, 9, 2 },
- { 0x676f02d9, 14, 7 }, { 0x8d2a4c8a, 20, 12 },
- { 0xfffa3942, 4, 5 }, { 0x8771f681, 11, 8 },
- { 0x6d9d6122, 16, 11 }, { 0xfde5380c, 23, 14 },
- { 0xa4beea44, 4, 1 }, { 0x4bdecfa9, 11, 4 },
- { 0xf6bb4b60, 16, 7 }, { 0xbebfbc70, 23, 10 },
- { 0x289b7ec6, 4, 13 }, { 0xeaa127fa, 11, 0 },
- { 0xd4ef3085, 16, 3 }, { 0x04881d05, 23, 6 },
- { 0xd9d4d039, 4, 9 }, { 0xe6db99e5, 11, 12 },
- { 0x1fa27cf8, 16, 15 }, { 0xc4ac5665, 23, 2 },
- { 0xf4292244, 6, 0 }, { 0x432aff97, 10, 7 },
- { 0xab9423a7, 15, 14 }, { 0xfc93a039, 21, 5 },
- { 0x655b59c3, 6, 12 }, { 0x8f0ccc92, 10, 3 },
- { 0xffeff47d, 15, 10 }, { 0x85845dd1, 21, 1 },
- { 0x6fa87e4f, 6, 8 }, { 0xfe2ce6e0, 10, 15 },
- { 0xa3014314, 15, 6 }, { 0x4e0811a1, 21, 13 },
- { 0xf7537e82, 6, 4 }, { 0xbd3af235, 10, 11 },
- { 0x2ad7d2bb, 15, 2 }, { 0xeb86d391, 21, 9 },
-};
-
-typedef struct md5_block md5_block;
-struct md5_block {
- uint8_t block[64];
- size_t used;
- uint64_t len;
-};
-
-static inline void md5_block_setup(md5_block *blk)
-{
- blk->used = 0;
- blk->len = 0;
-}
-
-static inline bool md5_block_write(
- md5_block *blk, const void **vdata, size_t *len)
-{
- size_t blkleft = sizeof(blk->block) - blk->used;
- size_t chunk = *len < blkleft ? *len : blkleft;
-
- const uint8_t *p = *vdata;
- memcpy(blk->block + blk->used, p, chunk);
- *vdata = p + chunk;
- *len -= chunk;
- blk->used += chunk;
- blk->len += chunk;
-
- if (blk->used == sizeof(blk->block)) {
- blk->used = 0;
- return true;
- }
-
- return false;
-}
-
-static inline void md5_block_pad(md5_block *blk, BinarySink *bs)
-{
- uint64_t final_len = blk->len << 3;
- size_t pad = 63 & (55 - blk->used);
-
- put_byte(bs, 0x80);
- put_padding(bs, pad, 0);
-
- unsigned char buf[8];
- PUT_64BIT_LSB_FIRST(buf, final_len);
- put_data(bs, buf, 8);
- smemclr(buf, 8);
-
- assert(blk->used == 0 && "Should have exactly hit a block boundary");
-}
-
-static inline uint32_t rol(uint32_t x, unsigned y)
-{
- return (x << (31 & y)) | (x >> (31 & -y));
-}
-
-static inline uint32_t Ch(uint32_t ctrl, uint32_t if1, uint32_t if0)
-{
- return if0 ^ (ctrl & (if1 ^ if0));
-}
-
-/* Parameter functions for the four MD5 round types */
-static inline uint32_t F(uint32_t x, uint32_t y, uint32_t z)
-{ return Ch(x, y, z); }
-static inline uint32_t G(uint32_t x, uint32_t y, uint32_t z)
-{ return Ch(z, x, y); }
-static inline uint32_t H(uint32_t x, uint32_t y, uint32_t z)
-{ return x ^ y ^ z; }
-static inline uint32_t I(uint32_t x, uint32_t y, uint32_t z)
-{ return y ^ (x | ~z); }
-
-static inline void md5_round(
- unsigned round_index, const uint32_t *message,
- uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d,
- uint32_t (*f)(uint32_t, uint32_t, uint32_t))
-{
- struct md5_round_constant rc = md5_round_constants[round_index];
-
- *a = *b + rol(*a + f(*b, *c, *d) + message[rc.msg_index] + rc.addition,
- rc.rotation);
-}
-
-static void md5_do_block(uint32_t *core, const uint8_t *block)
-{
- uint32_t message_words[16];
- for (size_t i = 0; i < 16; i++)
- message_words[i] = GET_32BIT_LSB_FIRST(block + 4*i);
-
- uint32_t a = core[0], b = core[1], c = core[2], d = core[3];
-
- size_t t = 0;
- for (size_t u = 0; u < 4; u++) {
- md5_round(t++, message_words, &a, &b, &c, &d, F);
- md5_round(t++, message_words, &d, &a, &b, &c, F);
- md5_round(t++, message_words, &c, &d, &a, &b, F);
- md5_round(t++, message_words, &b, &c, &d, &a, F);
- }
- for (size_t u = 0; u < 4; u++) {
- md5_round(t++, message_words, &a, &b, &c, &d, G);
- md5_round(t++, message_words, &d, &a, &b, &c, G);
- md5_round(t++, message_words, &c, &d, &a, &b, G);
- md5_round(t++, message_words, &b, &c, &d, &a, G);
- }
- for (size_t u = 0; u < 4; u++) {
- md5_round(t++, message_words, &a, &b, &c, &d, H);
- md5_round(t++, message_words, &d, &a, &b, &c, H);
- md5_round(t++, message_words, &c, &d, &a, &b, H);
- md5_round(t++, message_words, &b, &c, &d, &a, H);
- }
- for (size_t u = 0; u < 4; u++) {
- md5_round(t++, message_words, &a, &b, &c, &d, I);
- md5_round(t++, message_words, &d, &a, &b, &c, I);
- md5_round(t++, message_words, &c, &d, &a, &b, I);
- md5_round(t++, message_words, &b, &c, &d, &a, I);
- }
-
- core[0] += a;
- core[1] += b;
- core[2] += c;
- core[3] += d;
-
- smemclr(message_words, sizeof(message_words));
-}
-
-typedef struct md5 {
- uint32_t core[4];
- md5_block blk;
- BinarySink_IMPLEMENTATION;
- ssh_hash hash;
-} md5;
-
-static void md5_write(BinarySink *bs, const void *vp, size_t len);
-
-static ssh_hash *md5_new(const ssh_hashalg *alg)
-{
- md5 *s = snew(md5);
-
- s->hash.vt = alg;
- BinarySink_INIT(s, md5_write);
- BinarySink_DELEGATE_INIT(&s->hash, s);
- return &s->hash;
-}
-
-static void md5_reset(ssh_hash *hash)
-{
- md5 *s = container_of(hash, md5, hash);
-
- memcpy(s->core, md5_initial_state, sizeof(s->core));
- md5_block_setup(&s->blk);
-}
-
-static void md5_copyfrom(ssh_hash *hcopy, ssh_hash *horig)
-{
- md5 *copy = container_of(hcopy, md5, hash);
- md5 *orig = container_of(horig, md5, hash);
-
- memcpy(copy, orig, sizeof(*copy));
- BinarySink_COPIED(copy);
- BinarySink_DELEGATE_INIT(&copy->hash, copy);
-}
-
-static void md5_free(ssh_hash *hash)
-{
- md5 *s = container_of(hash, md5, hash);
-
- smemclr(s, sizeof(*s));
- sfree(s);
-}
-
-static void md5_write(BinarySink *bs, const void *vp, size_t len)
-{
- md5 *s = BinarySink_DOWNCAST(bs, md5);
-
- while (len > 0)
- if (md5_block_write(&s->blk, &vp, &len))
- md5_do_block(s->core, s->blk.block);
-}
-
-static void md5_digest(ssh_hash *hash, uint8_t *digest)
-{
- md5 *s = container_of(hash, md5, hash);
-
- md5_block_pad(&s->blk, BinarySink_UPCAST(s));
- for (size_t i = 0; i < 4; i++)
- PUT_32BIT_LSB_FIRST(digest + 4*i, s->core[i]);
-}
-
-const ssh_hashalg ssh_md5 = {
- .new = md5_new,
- .reset = md5_reset,
- .copyfrom = md5_copyfrom,
- .digest = md5_digest,
- .free = md5_free,
- .hlen = 16,
- .blocklen = 64,
- HASHALG_NAMES_BARE("MD5"),
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-03 10:56:11 +0300