Edit File: apr_sha1.h
/* 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 APR_SHA1_H #define APR_SHA1_H #include "apu.h" #include "apr_general.h" #ifdef __cplusplus extern "C" { #endif /** * @file apr_sha1.h * @brief APR-UTIL SHA1 library */ /** size of the SHA1 DIGEST */ #define APR_SHA1_DIGESTSIZE 20 /** * Define the Magic String prefix that identifies a password as being * hashed using our algorithm. */ #define APR_SHA1PW_ID "{SHA}" /** length of the SHA Password */ #define APR_SHA1PW_IDLEN 5 /** @see apr_sha1_ctx_t */ typedef struct apr_sha1_ctx_t apr_sha1_ctx_t; /** * SHA1 context structure */ struct apr_sha1_ctx_t { /** message digest */ apr_uint32_t digest[5]; /** 64-bit bit counts */ apr_uint32_t count_lo, count_hi; /** SHA data buffer */ apr_uint32_t data[16]; /** unprocessed amount in data */ int local; }; /** * Provide a means to SHA1 crypt/encode a plaintext password in a way which * makes password file compatible with those commonly use in netscape web * and ldap installations. * @param clear The plaintext password * @param len The length of the plaintext password * @param out The encrypted/encoded password * @note SHA1 support is useful for migration purposes, but is less * secure than Apache's password format, since Apache's (MD5) * password format uses a random eight character salt to generate * one of many possible hashes for the same password. Netscape * uses plain SHA1 without a salt, so the same password * will always generate the same hash, making it easier * to break since the search space is smaller. */ APU_DECLARE(void) apr_sha1_base64(const char *clear, int len, char *out); /** * Initialize the SHA digest * @param context The SHA context to initialize */ APU_DECLARE(void) apr_sha1_init(apr_sha1_ctx_t *context); /** * Update the SHA digest * @param context The SHA1 context to update * @param input The buffer to add to the SHA digest * @param inputLen The length of the input buffer */ APU_DECLARE(void) apr_sha1_update(apr_sha1_ctx_t *context, const char *input, unsigned int inputLen); /** * Update the SHA digest with binary data * @param context The SHA1 context to update * @param input The buffer to add to the SHA digest * @param inputLen The length of the input buffer */ APU_DECLARE(void) apr_sha1_update_binary(apr_sha1_ctx_t *context, const unsigned char *input, unsigned int inputLen); /** * Finish computing the SHA digest * @param digest the output buffer in which to store the digest * @param context The context to finalize */ APU_DECLARE(void) apr_sha1_final(unsigned char digest[APR_SHA1_DIGESTSIZE], apr_sha1_ctx_t *context); #ifdef __cplusplus } #endif #endif /* APR_SHA1_H */
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