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>

crypto/aes.c

@@ -1599,54 +1599,3 @@ void AES_decrypt(const unsigned char *in, unsigned char *out,
 }
 
 #endif /* AES_ASM */
-
-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);
-                }
-        }
-}

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,

include/crypto/aes.h

@@ -16,7 +16,6 @@ typedef struct aes_key_st AES_KEY;
 #define AES_set_decrypt_key QEMU_AES_set_decrypt_key
 #define AES_encrypt QEMU_AES_encrypt
 #define AES_decrypt QEMU_AES_decrypt
-#define AES_cbc_encrypt QEMU_AES_cbc_encrypt
 
 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
 	AES_KEY *key);
@@ -27,9 +26,6 @@ void AES_encrypt(const unsigned char *in, unsigned char *out,
 	const AES_KEY *key);
 void AES_decrypt(const unsigned char *in, unsigned char *out,
 	const AES_KEY *key);
-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);
 
 extern const uint8_t AES_sbox[256];
 extern const uint8_t AES_isbox[256];