crypto: delete built-in DES implementation

The built-in DES implementation is used for the VNC server password
authentication scheme. When building system emulators it is reasonable
to expect that an external crypto library is being used. It is thus
not worth keeping a home grown DES implementation in tree.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 0 insertions, 72 deletions

diff --git a/crypto/cipher-builtin.c.inc b/crypto/cipher-builtin.c.inc
index 7597cf4a10..70743f253c 100644
--- a/crypto/cipher-builtin.c.inc
+++ b/crypto/cipher-builtin.c.inc
@@ -19,7 +19,6 @@
  */
 
 #include "crypto/aes.h"
-#include "crypto/desrfb.h"
 #include "crypto/xts.h"
 
 typedef struct QCryptoCipherBuiltinAESContext QCryptoCipherBuiltinAESContext;
@@ -265,69 +264,10 @@ static const struct QCryptoCipherDriver qcrypto_cipher_aes_driver_xts = {
 };
 
 
-typedef struct QCryptoCipherBuiltinDESRFB QCryptoCipherBuiltinDESRFB;
-struct QCryptoCipherBuiltinDESRFB {
-    QCryptoCipher base;
-
-    /* C.f. alg_key_len[QCRYPTO_CIPHER_ALG_DES_RFB] */
-    uint8_t key[8];
-};
-
-static int qcrypto_cipher_encrypt_des_rfb(QCryptoCipher *cipher,
-                                          const void *in, void *out,
-                                          size_t len, Error **errp)
-{
-    QCryptoCipherBuiltinDESRFB *ctx
-        = container_of(cipher, QCryptoCipherBuiltinDESRFB, base);
-    size_t i;
-
-    if (!qcrypto_length_check(len, 8, errp)) {
-        return -1;
-    }
-
-    deskey(ctx->key, EN0);
-
-    for (i = 0; i < len; i += 8) {
-        des((void *)in + i, out + i);
-    }
-
-    return 0;
-}
-
-static int qcrypto_cipher_decrypt_des_rfb(QCryptoCipher *cipher,
-                                          const void *in, void *out,
-                                          size_t len, Error **errp)
-{
-    QCryptoCipherBuiltinDESRFB *ctx
-        = container_of(cipher, QCryptoCipherBuiltinDESRFB, base);
-    size_t i;
-
-    if (!qcrypto_length_check(len, 8, errp)) {
-        return -1;
-    }
-
-    deskey(ctx->key, DE1);
-
-    for (i = 0; i < len; i += 8) {
-        des((void *)in + i, out + i);
-    }
-
-    return 0;
-}
-
-static const struct QCryptoCipherDriver qcrypto_cipher_des_rfb_driver = {
-    .cipher_encrypt = qcrypto_cipher_encrypt_des_rfb,
-    .cipher_decrypt = qcrypto_cipher_decrypt_des_rfb,
-    .cipher_setiv = qcrypto_cipher_no_setiv,
-    .cipher_free = qcrypto_cipher_ctx_free,
-};
-
 bool qcrypto_cipher_supports(QCryptoCipherAlgorithm alg,
                              QCryptoCipherMode mode)
 {
     switch (alg) {
-    case QCRYPTO_CIPHER_ALG_DES_RFB:
-        return mode == QCRYPTO_CIPHER_MODE_ECB;
     case QCRYPTO_CIPHER_ALG_AES_128:
     case QCRYPTO_CIPHER_ALG_AES_192:
     case QCRYPTO_CIPHER_ALG_AES_256:
@@ -356,18 +296,6 @@ static QCryptoCipher *qcrypto_cipher_ctx_new(QCryptoCipherAlgorithm alg,
     }
 
     switch (alg) {
-    case QCRYPTO_CIPHER_ALG_DES_RFB:
-        if (mode == QCRYPTO_CIPHER_MODE_ECB) {
-            QCryptoCipherBuiltinDESRFB *ctx;
-
-            ctx = g_new0(QCryptoCipherBuiltinDESRFB, 1);
-            ctx->base.driver = &qcrypto_cipher_des_rfb_driver;
-            memcpy(ctx->key, key, sizeof(ctx->key));
-
-            return &ctx->base;
-        }
-        goto bad_mode;
-
     case QCRYPTO_CIPHER_ALG_AES_128:
     case QCRYPTO_CIPHER_ALG_AES_192:
     case QCRYPTO_CIPHER_ALG_AES_256: