91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SHA512_H
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#define SHA512_H 1
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#include <stdio.h>
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#include "u64.h"
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#ifdef __cplusplus
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namespace rocketmqSignature {
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#endif
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/* Structure to save state of computation between the single steps. */
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struct sha512_ctx {
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u64 state[8];
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u64 total[2];
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size_t buflen;
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u64 buffer[32];
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};
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enum { SHA384_DIGEST_SIZE = 48 };
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enum { SHA512_DIGEST_SIZE = 64 };
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/* Initialize structure containing state of computation. */
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extern void sha512_init_ctx(struct sha512_ctx* ctx);
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extern void sha384_init_ctx(struct sha512_ctx* ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 128!!! */
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extern void sha512_process_block(const void* buffer, size_t len, struct sha512_ctx* ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 128. */
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extern void sha512_process_bytes(const void* buffer, size_t len, struct sha512_ctx* ctx);
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 64 (48) bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest. */
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extern void* sha512_finish_ctx(struct sha512_ctx* ctx, void* resbuf);
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extern void* sha384_finish_ctx(struct sha512_ctx* ctx, void* resbuf);
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/* Put result from CTX in first 64 (48) bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest.
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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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extern void* sha512_read_ctx(const struct sha512_ctx* ctx, void* resbuf);
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extern void* sha384_read_ctx(const struct sha512_ctx* ctx, void* resbuf);
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/* Compute SHA512 (SHA384) message digest for bytes read from STREAM. The
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resulting message digest number will be written into the 64 (48) bytes
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beginning at RESBLOCK. */
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extern int sha512_stream(FILE* stream, void* resblock);
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extern int sha384_stream(FILE* stream, void* resblock);
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/* Compute SHA512 (SHA384) message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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extern void* sha512_buffer(const char* buffer, size_t len, void* resblock);
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extern void* sha384_buffer(const char* buffer, size_t len, void* resblock);
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#ifdef __cplusplus
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}
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#endif
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#endif
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