crypto: Introduce akcipher crypto class

Introduce new akcipher crypto class 'QCryptoAkCIpher', which supports
basic asymmetric operations: encrypt, decrypt, sign and verify.

Suggested by Daniel P. Berrangé, also add autoptr cleanup for the new
class. Thanks to Daniel!

Co-developed-by: lei he <helei.sig11@bytedance.com>
Signed-off-by: lei he <helei.sig11@bytedance.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/crypto/akcipherpriv.h b/crypto/akcipherpriv.h
new file mode 100644
index 0000000000..739f639bcf
--- /dev/null
+++ b/crypto/akcipherpriv.h
@@ -0,0 +1,55 @@
+/*
+ * QEMU Crypto asymmetric algorithms
+ *
+ * Copyright (c) 2022 Bytedance
+ * Author: zhenwei pi <pizhenwei@bytedance.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef QCRYPTO_AKCIPHERPRIV_H
+#define QCRYPTO_AKCIPHERPRIV_H
+
+#include "qapi/qapi-types-crypto.h"
+
+typedef struct QCryptoAkCipherDriver QCryptoAkCipherDriver;
+
+struct QCryptoAkCipher {
+    QCryptoAkCipherAlgorithm alg;
+    QCryptoAkCipherKeyType type;
+    int max_plaintext_len;
+    int max_ciphertext_len;
+    int max_signature_len;
+    int max_dgst_len;
+    QCryptoAkCipherDriver *driver;
+};
+
+struct QCryptoAkCipherDriver {
+    int (*encrypt)(QCryptoAkCipher *akcipher,
+                   const void *in, size_t in_len,
+                   void *out, size_t out_len, Error **errp);
+    int (*decrypt)(QCryptoAkCipher *akcipher,
+                   const void *out, size_t out_len,
+                   void *in, size_t in_len, Error **errp);
+    int (*sign)(QCryptoAkCipher *akcipher,
+                const void *in, size_t in_len,
+                void *out, size_t out_len, Error **errp);
+    int (*verify)(QCryptoAkCipher *akcipher,
+                  const void *in, size_t in_len,
+                  const void *in2, size_t in2_len, Error **errp);
+    void (*free)(QCryptoAkCipher *akcipher);
+};
+
+#endif /* QCRYPTO_AKCIPHER_H */