1 .\" $NetBSD: libcrypto.pl,v 1.3 2007/11/27 22:16:03 christos Exp $
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137 .TH ripemd 3 "2006-10-27" "1.1.0-dev" "OpenSSL"
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143 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
144 RIPEMD\-160 hash function
148 .IX Header "SYNOPSIS"
150 \& #include <openssl/ripemd.h>
152 \& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
153 \& unsigned char *md);
155 \& int RIPEMD160_Init(RIPEMD160_CTX *c);
156 \& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
157 \& unsigned long len);
158 \& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
161 .IX Header "DESCRIPTION"
162 \&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
165 \&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
166 bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
167 \&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest
168 is placed in a static array.
170 The following functions may be used if the message is not completely
173 \&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
175 \&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
176 be hashed (\fBlen\fR bytes at \fBdata\fR).
178 \&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
179 space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
180 the \fB\s-1RIPEMD160_CTX\s0\fR.
182 Applications should use the higher level functions
183 \&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
184 hash functions directly.
186 .IX Header "RETURN VALUES"
187 \&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
189 \&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
190 success, 0 otherwise.
192 .IX Header "CONFORMING TO"
193 \&\s-1ISO/IEC\s0 10118\-3 (draft) (??)
195 .IX Header "SEE ALSO"
196 \&\fIopenssl_sha\fR\|(3), \fIopenssl_hmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
199 \&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
200 \&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.