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[Qemu-devel] [PATCH RESEND 5/6] crypto: implement other common funcs for
From: |
Longpeng(Mike) |
Subject: |
[Qemu-devel] [PATCH RESEND 5/6] crypto: implement other common funcs for AEAD algorithms |
Date: |
Thu, 5 Jan 2017 08:49:40 +0800 |
If currently gcrypt/nettle doesn't support AEAD alg, then
we should implement some no-op funcs.
Signed-off-by: Longpeng(Mike) <address@hidden>
---
crypto/aead.c | 44 ++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 42 insertions(+), 2 deletions(-)
diff --git a/crypto/aead.c b/crypto/aead.c
index 47639b7..effe45e 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -16,18 +16,58 @@
#include "qapi/error.h"
#include "crypto/aead.h"
+#if defined(CONFIG_NETTLE_AEAD) || defined(CONFIG_GCRYPT_AEAD)
+
+static size_t alg_key_len[QCRYPTO_AEAD_ALG__MAX] = {
+ [QCRYPTO_CIPHER_ALG_AES_128] = 16,
+ [QCRYPTO_CIPHER_ALG_AES_192] = 24,
+ [QCRYPTO_CIPHER_ALG_AES_256] = 32,
+};
+
bool qcrypto_aead_supports(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode)
{
+ switch (alg) {
+ case QCRYPTO_CIPHER_ALG_AES_128:
+ case QCRYPTO_CIPHER_ALG_AES_192:
+ case QCRYPTO_CIPHER_ALG_AES_256:
+ break;
+ default:
+ return false;
+ }
+
+ switch (mode) {
+ case QCRYPTO_CIPHER_MODE_CCM:
+ case QCRYPTO_CIPHER_MODE_GCM:
+ return true;
+ default:
+ break;
+ }
+
return false;
}
size_t qcrypto_aead_get_key_len(QCryptoCipherAlgorithm alg)
{
- return -1;
+ if (alg > G_N_ELEMENTS(alg_key_len)) {
+ return 0;
+ }
+
+ return alg_key_len[alg];
}
-#if !defined(CONFIG_NETTLE_AEAD) && !defined(CONFIG_GCRYPT_AEAD)
+#else
+
+bool qcrypto_aead_supports(QCryptoCipherAlgorithm alg,
+ QCryptoCipherMode mode)
+{
+ return false;
+}
+
+size_t qcrypto_aead_get_key_len(QCryptoCipherAlgorithm alg)
+{
+ return -1;
+}
QCryptoAead *qcrypto_aead_new(QCryptoCipherAlgorithm alg,
QCryptoCipherMode mode,
--
1.8.3.1
- [Qemu-devel] [PATCH RESEND 0/6] crypto:add AEAD algorithms support, Longpeng(Mike), 2017/01/04
- [Qemu-devel] [PATCH RESEND 4/6] crypto: implement gcrypt-backed AEAD algorithms, Longpeng(Mike), 2017/01/04
- [Qemu-devel] [PATCH RESEND 1/6] configure: add CONFIG_GCRYPT/NETTLE_AEAD item, Longpeng(Mike), 2017/01/04
- [Qemu-devel] [PATCH RESEND 5/6] crypto: implement other common funcs for AEAD algorithms,
Longpeng(Mike) <=
- [Qemu-devel] [PATCH RESEND 2/6] crypto: add AEAD algorithms framework, Longpeng(Mike), 2017/01/04
- [Qemu-devel] [PATCH RESEND 3/6] crypto: implement nettle-backed AEAD algorithms, Longpeng(Mike), 2017/01/04
- [Qemu-devel] [PATCH RESEND 6/6] crypto: add AEAD algorithms testcases, Longpeng(Mike), 2017/01/04