1 files changed, 0 insertions, 141 deletions
diff --git a/ssharcf.c b/ssharcf.c
deleted file mode 100644
index 53821473..00000000
--- a/ssharcf.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * Arcfour (RC4) implementation for PuTTY.
- *
- * Coded from Schneier.
- */
-
-#include <assert.h>
-#include "ssh.h"
-
-typedef struct {
-    unsigned char i, j, s[256];
-    ssh_cipher ciph;
-} ArcfourContext;
-
-static void arcfour_block(void *handle, void *vblk, int len)
-{
-    unsigned char *blk = (unsigned char *)vblk;
-    ArcfourContext *ctx = (ArcfourContext *)handle;
-    unsigned k;
-    unsigned char tmp, i, j, *s;
-
-    s = ctx->s;
-    i = ctx->i; j = ctx->j;
-    for (k = 0; (int)k < len; k++) {
-        i  = (i + 1) & 0xff;
-        j  = (j + s[i]) & 0xff;
-        tmp = s[i]; s[i] = s[j]; s[j] = tmp;
-        blk[k] ^= s[(s[i]+s[j]) & 0xff];
-    }
-    ctx->i = i; ctx->j = j;
-}
-
-static void arcfour_setkey(ArcfourContext *ctx, unsigned char const *key,
-                           unsigned keybytes)
-{
-    unsigned char tmp, k[256], *s;
-    unsigned i, j;
-
-    s = ctx->s;
-    assert(keybytes <= 256);
-    ctx->i = ctx->j = 0;
-    for (i = 0; i < 256; i++) {
-        s[i] = i;
-        k[i] = key[i % keybytes];
-    }
-    j = 0;
-    for (i = 0; i < 256; i++) {
-        j = (j + s[i] + k[i]) & 0xff;
-        tmp = s[i]; s[i] = s[j]; s[j] = tmp;
-    }
-}
-
-/* -- Interface with PuTTY -- */
-
-/*
- * We don't implement Arcfour in SSH-1 because it's utterly insecure in
- * several ways.  See CERT Vulnerability Notes VU#25309, VU#665372,
- * and VU#565052.
- *
- * We don't implement the "arcfour" algorithm in SSH-2 because it doesn't
- * stir the cipher state before emitting keystream, and hence is likely
- * to leak data about the key.
- */
-
-static ssh_cipher *arcfour_new(const ssh_cipheralg *alg)
-{
-    ArcfourContext *ctx = snew(ArcfourContext);
-    ctx->ciph.vt = alg;
-    return &ctx->ciph;
-}
-
-static void arcfour_free(ssh_cipher *cipher)
-{
-    ArcfourContext *ctx = container_of(cipher, ArcfourContext, ciph);
-    smemclr(ctx, sizeof(*ctx));
-    sfree(ctx);
-}
-
-static void arcfour_stir(ArcfourContext *ctx)
-{
-    unsigned char *junk = snewn(1536, unsigned char);
-    memset(junk, 0, 1536);
-    arcfour_block(ctx, junk, 1536);
-    smemclr(junk, 1536);
-    sfree(junk);
-}
-
-static void arcfour_ssh2_setiv(ssh_cipher *cipher, const void *key)
-{
-    /* As a pure stream cipher, Arcfour has no IV separate from the key */
-}
-
-static void arcfour_ssh2_setkey(ssh_cipher *cipher, const void *key)
-{
-    ArcfourContext *ctx = container_of(cipher, ArcfourContext, ciph);
-    arcfour_setkey(ctx, key, ctx->ciph.vt->padded_keybytes);
-    arcfour_stir(ctx);
-}
-
-static void arcfour_ssh2_block(ssh_cipher *cipher, void *blk, int len)
-{
-    ArcfourContext *ctx = container_of(cipher, ArcfourContext, ciph);
-    arcfour_block(ctx, blk, len);
-}
-
-const ssh_cipheralg ssh_arcfour128_ssh2 = {
-    .new = arcfour_new,
-    .free = arcfour_free,
-    .setiv = arcfour_ssh2_setiv,
-    .setkey = arcfour_ssh2_setkey,
-    .encrypt = arcfour_ssh2_block,
-    .decrypt = arcfour_ssh2_block,
-    .ssh2_id = "arcfour128",
-    .blksize = 1,
-    .real_keybits = 128,
-    .padded_keybytes = 16,
-    .flags = 0,
-    .text_name = "Arcfour-128",
-};
-
-const ssh_cipheralg ssh_arcfour256_ssh2 = {
-    .new = arcfour_new,
-    .free = arcfour_free,
-    .setiv = arcfour_ssh2_setiv,
-    .setkey = arcfour_ssh2_setkey,
-    .encrypt = arcfour_ssh2_block,
-    .decrypt = arcfour_ssh2_block,
-    .ssh2_id = "arcfour256",
-    .blksize = 1,
-    .real_keybits = 256,
-    .padded_keybytes = 32,
-    .flags = 0,
-    .text_name = "Arcfour-256",
-};
-
-static const ssh_cipheralg *const arcfour_list[] = {
-    &ssh_arcfour256_ssh2,
-    &ssh_arcfour128_ssh2,
-};
-
-const ssh2_ciphers ssh2_arcfour = { lenof(arcfour_list), arcfour_list };