summaryrefslogtreecommitdiffstats
path: root/lib/sha256.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/sha256.h')
-rw-r--r--lib/sha256.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/lib/sha256.h b/lib/sha256.h
new file mode 100644
index 0000000..c93d253
--- /dev/null
+++ b/lib/sha256.h
@@ -0,0 +1,66 @@
+/*-
+ * Copyright 2005,2007,2009 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.
+ *
+ * $FreeBSD: src/lib/libmd/sha256.h,v 1.2 2006/01/17 15:35:56 phk Exp $
+ */
+
+#ifndef _SHA256_H_
+#define _SHA256_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct SHA256Context {
+ uint32_t state[8];
+ uint32_t count[2];
+ unsigned char buf[64];
+} SHA256_CTX;
+
+typedef struct HMAC_SHA256Context {
+ SHA256_CTX ictx;
+ SHA256_CTX octx;
+} HMAC_SHA256_CTX;
+
+void SHA256_Init(SHA256_CTX *);
+void SHA256_Update(SHA256_CTX *, const void *, size_t);
+void SHA256_Final(unsigned char[32], SHA256_CTX *);
+void HMAC__SHA256_Init(HMAC_SHA256_CTX *, const void *, size_t);
+void HMAC__SHA256_Update(HMAC_SHA256_CTX *, const void *, size_t);
+void HMAC__SHA256_Final(unsigned char[32], HMAC_SHA256_CTX *);
+
+/**
+ * PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen):
+ * Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and
+ * write the output to buf. The value dkLen must be at most 32 * (2^32 - 1).
+ */
+void PBKDF2_SHA256(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t,
+ uint8_t *, size_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_SHA256_H_ */