Index: src/lib/crypto/crypto_aesctr.h |
diff --git a/src/lib/crypto/crypto_aesctr.h b/src/lib/crypto/crypto_aesctr.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b50398ff87335fa85dcaf3ecd4dce6d187589813 |
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+++ b/src/lib/crypto/crypto_aesctr.h |
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+/*- |
+ * Copyright 2009 Colin Percival |
+ * All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions |
+ * are met: |
+ * 1. Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * 2. Redistributions in binary form must reproduce the above copyright |
+ * notice, this list of conditions and the following disclaimer in the |
+ * documentation and/or other materials provided with the distribution. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
+ * SUCH DAMAGE. |
+ * |
+ * This file was originally written by Colin Percival as part of the Tarsnap |
+ * online backup system. |
+ */ |
+#ifndef _CRYPTO_AESCTR_H_ |
+#define _CRYPTO_AESCTR_H_ |
+ |
+#include <stdint.h> |
+ |
+#include <openssl/aes.h> |
+ |
+/** |
+ * crypto_aesctr_init(key, nonce): |
+ * Prepare to encrypt/decrypt data with AES in CTR mode, using the provided |
+ * expanded key and nonce. The key provided must remain valid for the |
+ * lifetime of the stream. |
+ */ |
+struct crypto_aesctr * crypto_aesctr_init(AES_KEY *, uint64_t); |
+ |
+/** |
+ * crypto_aesctr_stream(stream, inbuf, outbuf, buflen): |
+ * Generate the next ${buflen} bytes of the AES-CTR stream and xor them with |
+ * bytes from ${inbuf}, writing the result into ${outbuf}. If the buffers |
+ * ${inbuf} and ${outbuf} overlap, they must be identical. |
+ */ |
+void crypto_aesctr_stream(struct crypto_aesctr *, const uint8_t *, |
+ uint8_t *, size_t); |
+ |
+/** |
+ * crypto_aesctr_free(stream): |
+ * Free the provided stream object. |
+ */ |
+void crypto_aesctr_free(struct crypto_aesctr *); |
+ |
+#endif /* !_CRYPTO_AESCTR_H_ */ |