test c**

libdvbci/aes_xcbc_mac.cpp

@@ -0,0 +1,62 @@
+#include <stdint.h>
+#include <string.h>
+#include <openssl/aes.h>
+
+#include "aes_xcbc_mac.h"
+
+int aes_xcbc_mac_init(struct aes_xcbc_mac_ctx *ctx, const uint8_t *key)
+{
+	AES_KEY aes_key;
+	int y, x;
+
+	AES_set_encrypt_key(key, 128, &aes_key);
+
+	for (y = 0; y < 3; y++) {
+		for (x = 0; x < 16; x++)
+			ctx->K[y][x] = y + 1;
+		AES_ecb_encrypt(ctx->K[y], ctx->K[y], &aes_key, 1);
+	}
+
+	/* setup K1 */
+	AES_set_encrypt_key(ctx->K[0], 128, &ctx->key);
+
+	memset(ctx->IV, 0, 16);
+	ctx->buflen = 0;
+
+	return 0;
+}
+
+int aes_xcbc_mac_process(struct aes_xcbc_mac_ctx *ctx, const uint8_t *in, unsigned int len)
+{
+	while (len) {
+		if (ctx->buflen == 16) {
+			AES_ecb_encrypt(ctx->IV, ctx->IV, &ctx->key, 1);
+			ctx->buflen = 0;
+		}
+		ctx->IV[ctx->buflen++] ^= *in++;
+		--len;
+	}
+
+	return 0;
+}
+
+int aes_xcbc_mac_done(struct aes_xcbc_mac_ctx *ctx, uint8_t *out)
+{
+	int i;
+
+	if (ctx->buflen == 16) {
+		/* K2 */
+		for (i = 0; i < 16; i++)
+			ctx->IV[i] ^= ctx->K[1][i];
+	} else {
+		ctx->IV[ctx->buflen] ^= 0x80;
+		/* K3 */
+		for (i = 0; i < 16; i++)
+			ctx->IV[i] ^= ctx->K[2][i];
+	}
+
+	AES_ecb_encrypt(ctx->IV, ctx->IV, &ctx->key, 1);
+	memcpy(out, ctx->IV, 16);
+
+	return 0;
+}