crypto/builtin: Move AES_cbc_encrypt into cipher-builtin.inc.c

By making the function private, we will be able to make further
simplifications.  Re-indent the migrated code and fix the missing
braces for CODING_STYLE.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/crypto/cipher-builtin.c.inc b/crypto/cipher-builtin.c.inc
index 8e21f2673f..61baad265a 100644
--- a/crypto/cipher-builtin.c.inc
+++ b/crypto/cipher-builtin.c.inc
@@ -104,6 +104,62 @@ static void do_aes_decrypt_ecb(const void *vctx,
     }
 }
 
+static void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
+                            const unsigned long length, const AES_KEY *key,
+                            unsigned char *ivec, const int enc)
+{
+    unsigned long n;
+    unsigned long len = length;
+    unsigned char tmp[AES_BLOCK_SIZE];
+
+    assert(in && out && key && ivec);
+
+    if (enc) {
+        while (len >= AES_BLOCK_SIZE) {
+            for (n = 0; n < AES_BLOCK_SIZE; ++n) {
+                tmp[n] = in[n] ^ ivec[n];
+            }
+            AES_encrypt(tmp, out, key);
+            memcpy(ivec, out, AES_BLOCK_SIZE);
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+        if (len) {
+            for (n = 0; n < len; ++n) {
+                tmp[n] = in[n] ^ ivec[n];
+            }
+            for (n = len; n < AES_BLOCK_SIZE; ++n) {
+                tmp[n] = ivec[n];
+            }
+            AES_encrypt(tmp, tmp, key);
+            memcpy(out, tmp, AES_BLOCK_SIZE);
+            memcpy(ivec, tmp, AES_BLOCK_SIZE);
+        }
+    } else {
+        while (len >= AES_BLOCK_SIZE) {
+            memcpy(tmp, in, AES_BLOCK_SIZE);
+            AES_decrypt(in, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n) {
+                out[n] ^= ivec[n];
+            }
+            memcpy(ivec, tmp, AES_BLOCK_SIZE);
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+        if (len) {
+            memcpy(tmp, in, AES_BLOCK_SIZE);
+            AES_decrypt(tmp, tmp, key);
+            for (n = 0; n < len; ++n) {
+                out[n] = tmp[n] ^ ivec[n];
+            }
+            memcpy(ivec, tmp, AES_BLOCK_SIZE);
+        }
+    }
+}
+
+
 static int qcrypto_cipher_encrypt_aes(QCryptoCipher *cipher,
                                       const void *in,
                                       void *out,