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support arcfour128 cipher per RFC 4345

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This commit is contained in:
Simon Josefsson
2009-10-27 20:03:30 +01:00
parent 3182045c2d
commit b38b4fb859
2 changed files with 44 additions and 0 deletions
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8
NEWS
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@@ -1,3 +1,11 @@
Version 1.2.2 (unreleased)
* This release includes the following changes:
o Support for the "arcfour128" cipher as per RFC 4345 for libgcrypt
and OpenSSL. It is preferred over the normal "arcfour" cipher
which is somewhat broken. By Simon Josefsson.
Version 1.2.1 (September 28, 2009)
* This release includes the following changes:

36
src/crypt.c
View File

@@ -192,6 +192,41 @@ static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_arcfour = {
&crypt_dtor,
_libssh2_cipher_arcfour
};
static int
crypt_init_arcfour128(LIBSSH2_SESSION * session,
const LIBSSH2_CRYPT_METHOD * method,
unsigned char *iv, int *free_iv,
unsigned char *secret, int *free_secret,
int encrypt, void **abstract)
{
struct crypt_ctx *cctx;
char block[8];
int rc;
rc = crypt_init (session, method, iv, free_iv, secret, free_secret,
encrypt, abstract);
if (rc == 0) {
size_t discard = 1536;
cctx = *(struct crypt_ctx **) abstract;
for (; discard; discard -= 8)
_libssh2_cipher_crypt(&cctx->h, cctx->algo, cctx->encrypt, block);
}
return rc;
}
static const LIBSSH2_CRYPT_METHOD libssh2_crypt_method_arcfour128 = {
"arcfour128",
8, /* blocksize */
8, /* initial value length */
16, /* secret length */
0, /* flags */
&crypt_init_arcfour128,
&crypt_encrypt,
&crypt_dtor,
_libssh2_cipher_arcfour
};
#endif /* LIBSSH2_RC4 */
#if LIBSSH2_CAST
@@ -233,6 +268,7 @@ static const LIBSSH2_CRYPT_METHOD *_libssh2_crypt_methods[] = {
&libssh2_crypt_method_blowfish_cbc,
#endif /* LIBSSH2_BLOWFISH */
#if LIBSSH2_RC4
&libssh2_crypt_method_arcfour128,
&libssh2_crypt_method_arcfour,
#endif /* LIBSSH2_RC4 */
#if LIBSSH2_CAST