crypto: hmac: add hmac driver framework

1) makes the public APIs in hmac-nettle/gcrypt/glib static,
   and rename them with "nettle/gcrypt/glib" prefix.

2) introduces hmac framework, including QCryptoHmacDriver
   and new public APIs.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/crypto/hmac.c b/crypto/hmac.c
index 5750405cfb..a4690e3f4a 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -12,9 +12,22 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "crypto/hmac.h"
+#include "hmacpriv.h"
 
 static const char hex[] = "0123456789abcdef";
 
+int qcrypto_hmac_bytesv(QCryptoHmac *hmac,
+                        const struct iovec *iov,
+                        size_t niov,
+                        uint8_t **result,
+                        size_t *resultlen,
+                        Error **errp)
+{
+    QCryptoHmacDriver *drv = hmac->driver;
+
+    return drv->hmac_bytesv(hmac, iov, niov, result, resultlen, errp);
+}
+
 int qcrypto_hmac_bytes(QCryptoHmac *hmac,
                        const char *buf,
                        size_t len,
@@ -70,3 +83,34 @@ int qcrypto_hmac_digest(QCryptoHmac *hmac,
 
     return qcrypto_hmac_digestv(hmac, &iov, 1, digest, errp);
 }
+
+QCryptoHmac *qcrypto_hmac_new(QCryptoHashAlgorithm alg,
+                              const uint8_t *key, size_t nkey,
+                              Error **errp)
+{
+    QCryptoHmac *hmac;
+    void *ctx;
+
+    ctx = qcrypto_hmac_ctx_new(alg, key, nkey, errp);
+    if (!ctx) {
+        return NULL;
+    }
+
+    hmac = g_new0(QCryptoHmac, 1);
+    hmac->alg = alg;
+    hmac->opaque = ctx;
+    hmac->driver = (void *)&qcrypto_hmac_lib_driver;
+
+    return hmac;
+}
+
+void qcrypto_hmac_free(QCryptoHmac *hmac)
+{
+    QCryptoHmacDriver *drv;
+
+    if (hmac) {
+        drv = hmac->driver;
+        drv->hmac_free(hmac);
+        g_free(hmac);
+    }
+}