initial import

cipher.c

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2024 Lucas Gabriel Vuotto <lucas@lgv5.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+
+#include "lilcrypto.h"
+#include "cipher.h"
+
+
+int
+lc_cipher_encrypt_init(struct lc_cipher_ctx *ctx, const uint8_t *key,
+    size_t keylen, const uint8_t *iv, size_t ivlen)
+{
+	return ctx->impl->encrypt_init(ctx->arg, key, keylen, iv, ivlen);
+}
+
+int
+lc_cipher_encrypt_update(struct lc_cipher_ctx *ctx, uint8_t *out,
+    size_t *outlen, const uint8_t *in, size_t inlen)
+{
+	return ctx->impl->encrypt_update(ctx->arg, out, outlen, in, inlen);
+}
+
+int
+lc_cipher_encrypt_final(struct lc_cipher_ctx *ctx, uint8_t *out,
+    size_t *outlen)
+{
+	return ctx->impl->encrypt_final(ctx->arg, out, outlen);
+}
+
+int
+lc_cipher_encrypt(const struct lc_cipher_impl *impl, const uint8_t *key,
+    size_t keylen, const uint8_t *iv, size_t ivlen, uint8_t *out,
+    size_t *outlen, const uint8_t *in, size_t inlen)
+{
+	return impl->encrypt(key, keylen, iv, ivlen, out, outlen, in, inlen);
+}
+
+int
+lc_cipher_decrypt_init(struct lc_cipher_ctx *ctx, const uint8_t *key,
+    size_t keylen, const uint8_t *iv, size_t ivlen)
+{
+	return ctx->impl->decrypt_init(ctx->arg, key, keylen, iv, ivlen);
+}
+
+int
+lc_cipher_decrypt_update(struct lc_cipher_ctx *ctx, uint8_t *out,
+    size_t *outlen, const uint8_t *in, size_t inlen)
+{
+	return ctx->impl->decrypt_update(ctx->arg, out, outlen, in, inlen);
+}
+
+int
+lc_cipher_decrypt_final(struct lc_cipher_ctx *ctx, uint8_t *out,
+    size_t *outlen)
+{
+	return ctx->impl->decrypt_final(ctx->arg, out, outlen);
+}
+
+int
+lc_cipher_decrypt(const struct lc_cipher_impl *impl, const uint8_t *key,
+    size_t keylen, const uint8_t *iv, size_t ivlen, uint8_t *out,
+    size_t *outlen, const uint8_t *in, size_t inlen)
+{
+	return impl->decrypt(key, keylen, iv, ivlen, out, outlen, in, inlen);
+}
+
+struct lc_cipher_ctx *
+lc_cipher_ctx_new(const struct lc_cipher_impl *impl)
+{
+	struct lc_cipher_ctx	*ctx;
+	void			*arg;
+
+	ctx = malloc(sizeof(*ctx));
+	if (ctx == NULL)
+		return NULL;
+	if (impl->argsz > 0) {
+		arg = malloc(impl->argsz);
+		if (arg == NULL) {
+			free(ctx);
+			return NULL;
+		}
+		ctx->arg = arg;
+	} else
+		ctx->arg = NULL;
+	ctx->impl = impl;
+
+	return ctx;
+}
+
+void
+lc_cipher_ctx_free(struct lc_cipher_ctx *ctx)
+{
+	if (ctx != NULL)
+		free(ctx->arg);
+	free(ctx);
+}