1 .\" $NetBSD: openssl_ripemd.3,v 1.14 2015/06/12 17:01:15 christos Exp $
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135 .\" ========================================================================
138 .TH ripemd 3 "2009-07-19" "1.0.1n" "OpenSSL"
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144 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
145 RIPEMD\-160 hash function
149 .IX Header "SYNOPSIS"
151 \& #include <openssl/ripemd.h>
153 \& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
154 \& unsigned char *md);
156 \& int RIPEMD160_Init(RIPEMD160_CTX *c);
157 \& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
158 \& unsigned long len);
159 \& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
162 .IX Header "DESCRIPTION"
163 \&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
166 \&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
167 bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
168 \&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL,\s0 the digest
169 is placed in a static array.
171 The following functions may be used if the message is not completely
174 \&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
176 \&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
177 be hashed (\fBlen\fR bytes at \fBdata\fR).
179 \&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
180 space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
181 the \fB\s-1RIPEMD160_CTX\s0\fR.
183 Applications should use the higher level functions
184 \&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
185 hash functions directly.
187 .IX Header "RETURN VALUES"
188 \&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
190 \&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
191 success, 0 otherwise.
193 .IX Header "CONFORMING TO"
194 \&\s-1ISO/IEC 10118\-3 \s0(draft) (??)
196 .IX Header "SEE ALSO"
197 \&\fIopenssl_sha\fR\|(3), \fIopenssl_hmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
200 \&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
201 \&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.