/*
- * sha1.h
- *
- * Description:
- * This is the header file for code which implements the Secure
- * Hashing Algorithm 1 as defined in FIPS PUB 180-1 published
- * April 17, 1995.
- *
- * Many of the variable names in this code, especially the
- * single character names, were used because those were the names
- * used in the publication.
- *
- * Please read the file sha1.c for more information.
- *
+ * This file is from the Apache Portable Runtime Library.
+ * The full upstream copyright and license statement is included below.
+ * Modifications copyright (c) 2009 Nicira, Inc.
*/
-#ifndef _SHA1_H_
-#define _SHA1_H_
-#include <stdint.h>
-/*
- * If you do not have the ISO standard stdint.h header file, then you
- * must typdef the following:
- * name meaning
- * uint32_t unsigned 32 bit integer
- * uint8_t unsigned 8 bit integer (i.e., unsigned char)
- * int_least16_t integer of >= 16 bits
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
*
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* NIST Secure Hash Algorithm
+ * heavily modified by Uwe Hollerbach uh@alumni.caltech edu
+ * from Peter C. Gutmann's implementation as found in
+ * Applied Cryptography by Bruce Schneier
+ * This code is hereby placed in the public domain
*/
-#ifndef _SHA_enum_
-#define _SHA_enum_
-enum
-{
- shaSuccess = 0,
- shaNull, /* Null pointer parameter */
- shaInputTooLong, /* input data too long */
- shaStateError /* called Input after Result */
-};
-#endif
-#define SHA1HashSize 20
+#ifndef SHA1_H
+#define SHA1_H
-/*
- * This structure will hold context information for the SHA-1
- * hashing operation
- */
-typedef struct SHA1Context
-{
- uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest */
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
- uint32_t Length_Low; /* Message length in bits */
- uint32_t Length_High; /* Message length in bits */
+#define SHA1_DIGEST_SIZE 20 /* Size of the SHA1 digest. */
+#define SHA1_HEX_DIGEST_LEN 40 /* Length of SHA1 digest as hex in ASCII. */
- /* Index into message block array */
- int_least16_t Message_Block_Index;
- uint8_t Message_Block[64]; /* 512-bit message blocks */
+/* SHA1 context structure. */
+struct sha1_ctx {
+ uint32_t digest[5]; /* Message digest. */
+ uint32_t count_lo, count_hi; /* 64-bit bit counts. */
+ uint32_t data[16]; /* SHA data buffer */
+ int local; /* Unprocessed amount in data. */
+};
- int Computed; /* Is the digest computed? */
- int Corrupted; /* Is the message digest corrupted? */
-} SHA1Context;
+void sha1_init(struct sha1_ctx *);
+void sha1_update(struct sha1_ctx *, const void *, size_t);
+void sha1_final(struct sha1_ctx *, uint8_t digest[SHA1_DIGEST_SIZE]);
+void sha1_bytes(const void *, size_t, uint8_t digest[SHA1_DIGEST_SIZE]);
-/*
- * Function Prototypes
- */
-int SHA1Reset( SHA1Context *);
-int SHA1Input( SHA1Context *,
- const uint8_t *,
- unsigned int);
-int SHA1Result( SHA1Context *,
- uint8_t Message_Digest[SHA1HashSize]);
+#define SHA1_FMT \
+ "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" \
+ "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
+#define SHA1_ARGS(DIGEST) \
+ ((DIGEST)[0]), ((DIGEST)[1]), ((DIGEST)[2]), ((DIGEST)[3]), \
+ ((DIGEST)[4]), ((DIGEST)[5]), ((DIGEST)[6]), ((DIGEST)[7]), \
+ ((DIGEST)[8]), ((DIGEST)[9]), ((DIGEST)[10]), ((DIGEST)[11]), \
+ ((DIGEST)[12]), ((DIGEST)[13]), ((DIGEST)[14]), ((DIGEST)[15]), \
+ ((DIGEST)[16]), ((DIGEST)[17]), ((DIGEST)[18]), ((DIGEST)[19])
-void SHA1Bytes(const void *data, unsigned int n,
- uint8_t Message_Digest[SHA1HashSize]);
+void sha1_to_hex(const uint8_t digest[SHA1_DIGEST_SIZE],
+ char hex[SHA1_HEX_DIGEST_LEN + 1]);
+bool sha1_from_hex(uint8_t digest[SHA1_DIGEST_SIZE], const char *hex);
-#endif
+#endif /* sha1.h */
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