diff options
Diffstat (limited to 'ui/vnc.c')
| -rw-r--r-- | ui/vnc.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/ui/vnc.c b/ui/vnc.c index 0e5fcb278f..af02522e84 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -2733,6 +2733,19 @@ static void authentication_failed(VncState *vs) vnc_client_error(vs); } +static void +vnc_munge_des_rfb_key(unsigned char *key, size_t nkey) +{ + size_t i; + for (i = 0; i < nkey; i++) { + uint8_t r = key[i]; + r = (r & 0xf0) >> 4 | (r & 0x0f) << 4; + r = (r & 0xcc) >> 2 | (r & 0x33) << 2; + r = (r & 0xaa) >> 1 | (r & 0x55) << 1; + key[i] = r; + } +} + static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) { unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; @@ -2757,9 +2770,10 @@ static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) pwlen = strlen(vs->vd->password); for (i=0; i<sizeof(key); i++) key[i] = i<pwlen ? vs->vd->password[i] : 0; + vnc_munge_des_rfb_key(key, sizeof(key)); cipher = qcrypto_cipher_new( - QCRYPTO_CIPHER_ALG_DES_RFB, + QCRYPTO_CIPHER_ALG_DES, QCRYPTO_CIPHER_MODE_ECB, key, G_N_ELEMENTS(key), &err); @@ -4045,9 +4059,9 @@ void vnc_display_open(const char *id, Error **errp) goto fail; } if (!qcrypto_cipher_supports( - QCRYPTO_CIPHER_ALG_DES_RFB, QCRYPTO_CIPHER_MODE_ECB)) { + QCRYPTO_CIPHER_ALG_DES, QCRYPTO_CIPHER_MODE_ECB)) { error_setg(errp, - "Cipher backend does not support DES RFB algorithm"); + "Cipher backend does not support DES algorithm"); goto fail; } } |