151 lines
4.5 KiB
Groff
151 lines
4.5 KiB
Groff
.\" $OpenBSD: RIPEMD160.3,v 1.7 2019/08/25 15:17:19 schwarze Exp $
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.\" full merge up to: OpenSSL 72a7a702 Feb 26 14:05:09 2019 +0000
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.\"
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.\" This file was written by Ulf Moeller <ulf@openssl.org>.
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.\" Copyright (c) 2000, 2006, 2014 The OpenSSL Project. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in
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.\" the documentation and/or other materials provided with the
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.\" distribution.
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.\"
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.\" 3. All advertising materials mentioning features or use of this
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.\" software must display the following acknowledgment:
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.\" "This product includes software developed by the OpenSSL Project
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.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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.\"
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.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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.\" endorse or promote products derived from this software without
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.\" prior written permission. For written permission, please contact
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.\" openssl-core@openssl.org.
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.\"
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.\" 5. Products derived from this software may not be called "OpenSSL"
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.\" nor may "OpenSSL" appear in their names without prior written
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.\" permission of the OpenSSL Project.
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.\"
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.\" 6. Redistributions of any form whatsoever must retain the following
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.\" acknowledgment:
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.\" "This product includes software developed by the OpenSSL Project
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.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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.\" OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd $Mdocdate: August 25 2019 $
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.Dt RIPEMD160 3
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.Os
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.Sh NAME
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.Nm RIPEMD160 ,
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.Nm RIPEMD160_Init ,
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.Nm RIPEMD160_Update ,
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.Nm RIPEMD160_Final
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.Nd RIPEMD-160 hash function
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.Sh SYNOPSIS
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.In openssl/ripemd.h
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.Ft unsigned char *
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.Fo RIPEMD160
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.Fa "const unsigned char *d"
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.Fa "unsigned long n"
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.Fa "unsigned char *md"
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.Fc
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.Ft int
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.Fo RIPEMD160_Init
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.Fa "RIPEMD160_CTX *c"
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.Fc
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.Ft int
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.Fo RIPEMD160_Update
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.Fa "RIPEMD160_CTX *c"
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.Fa "const void *data"
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.Fa "unsigned long len"
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.Fc
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.Ft int
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.Fo RIPEMD160_Final
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.Fa "unsigned char *md"
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.Fa "RIPEMD160_CTX *c"
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.Fc
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.Sh DESCRIPTION
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RIPEMD-160 is a cryptographic hash function with a 160-bit output.
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.Pp
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.Fn RIPEMD160
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computes the RIPEMD-160 message digest of the
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.Fa n
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bytes at
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.Fa d
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and places it in
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.Fa md ,
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which must have space for
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.Dv RIPEMD160_DIGEST_LENGTH
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== 20 bytes of output.
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If
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.Fa md
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is
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.Dv NULL ,
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the digest is placed in a static array.
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.Pp
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The following functions may be used if the message is not completely
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stored in memory:
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.Pp
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.Fn RIPEMD160_Init
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initializes a
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.Vt RIPEMD160_CTX
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structure.
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.Pp
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.Fn RIPEMD160_Update
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can be called repeatedly with chunks of the message to be hashed
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.Pq Fa len No bytes at Fa data .
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.Pp
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.Fn RIPEMD160_Final
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places the message digest in
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.Fa md ,
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which must have space for
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.Dv RIPEMD160_DIGEST_LENGTH
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== 20 bytes of output,
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and erases the
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.Vt RIPEMD160_CTX .
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.Pp
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Applications should use the higher level functions
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.Xr EVP_DigestInit 3
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etc. instead of calling the hash functions directly.
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.Sh RETURN VALUES
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.Fn RIPEMD160
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returns a pointer to the hash value.
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.Pp
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.Fn RIPEMD160_Init ,
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.Fn RIPEMD160_Update ,
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and
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.Fn RIPEMD160_Final
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return 1 for success or 0 otherwise.
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.Sh SEE ALSO
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.Xr EVP_DigestInit 3 ,
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.Xr HMAC 3
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.Sh STANDARDS
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.Bd -unfilled
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ISO/IEC 10118-3:2004/Cor 1:2011
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Hash-functions \(em Part 3: Dedicated hash-functions
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Clause 7: RIPEMD-160
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.Ed
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.Sh HISTORY
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.Fn RIPEMD160 ,
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.Fn RIPEMD160_Init ,
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.Fn RIPEMD160_Update ,
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and
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.Fn RIPEMD160_Final
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first appeared in SSLeay 0.9.0 and have been available since
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.Ox 2.4 .
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