X-Git-Url: http://www.average.org/gitweb/?p=pam_pcsc_cr.git;a=blobdiff_plain;f=ossl_crypto.c;h=61c6504cf0e0688c3193793dc28f50f5797cad3f;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hb=582620961e80e33514b39ab76648be761fd55368;hpb=aaa54fb1a4ec04a0f59e47170feb8173514f5ff5

diff --git a/ossl_crypto.c b/ossl_crypto.c
index e69de29..61c6504 100644
--- a/ossl_crypto.c
+++ b/ossl_crypto.c
@@ -0,0 +1,53 @@
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+
+#include "crypto_if.h"
+
+static int ossl_encrypt(void *pt, int ptlen, void *key, int keylen,
+			void *ct, int *ctlen)
+{
+    EVP_CIPHER_CTX ctx;
+    unsigned char iv[16] = {0};
+    int outlen1, outlen2;
+
+    EVP_EncryptInit(&ctx, EVP_aes_256_cbc(), key, iv);
+    EVP_EncryptUpdate(&ctx, ct, &outlen1, pt, ptlen);
+    EVP_EncryptFinal(&ctx, ct + outlen1, &outlen2);
+    if (outlen1 + outlen2 > *ctlen) return -1;
+    *ctlen = outlen1 + outlen2;
+
+    return 0;
+}
+
+static int ossl_decrypt()
+{
+	return 0;
+}
+
+static int ossl_hash()
+{
+	return 0;
+}
+
+static int ossl_hmac()
+{
+	return 0;
+}
+
+// result = HMAC(EVP_sha256(), key, 999, data, 888, NULL, NULL);
+//               EVP_MD *
+
+// HMAC_CTX hctx;
+// HMAC_CTX_init(&hctx);
+// if (HMAC_Init(&hctx, key, keylen, EVP_sha1())) success;
+// if (HMAC_Update(&hctx, data, datalen)) success;
+// if (HMAC_Final(&hctx, &digest, &digestlen)) success
+// HMAC_CTX_cleanup(&hctx);
+
+struct crypto_interface ossl_crypto_if = {
+	.name		= "openssl",
+	.encrypt	= ossl_encrypt,
+	.decrypt	= ossl_decrypt,
+	.hash		= ossl_hash,
+	.hmac		= ossl_hmac,
+};