Upgrade to OpenSSL 0.9.8h.
[dragonfly.git] / secure / lib / libcrypto / man / ripemd.3
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129.\" ========================================================================
130.\"
131.IX Title "ripemd 3"
aac4ff6f 132.TH ripemd 3 "2008-09-06" "0.9.8h" "OpenSSL"
984263bc 133.SH "NAME"
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134RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final \-
135RIPEMD\-160 hash function
984263bc 136.SH "SYNOPSIS"
8b0cefbb 137.IX Header "SYNOPSIS"
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138.Vb 1
139\& #include <openssl/ripemd.h>
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140.Ve
141.PP
142.Vb 2
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143\& unsigned char *RIPEMD160(const unsigned char *d, unsigned long n,
144\& unsigned char *md);
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145.Ve
146.PP
147.Vb 4
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148\& int RIPEMD160_Init(RIPEMD160_CTX *c);
149\& int RIPEMD160_Update(RIPEMD_CTX *c, const void *data,
984263bc 150\& unsigned long len);
edae4a78 151\& int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
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152.Ve
153.SH "DESCRIPTION"
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154.IX Header "DESCRIPTION"
155\&\s-1RIPEMD\-160\s0 is a cryptographic hash function with a
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156160 bit output.
157.PP
8b0cefbb 158\&\s-1\fIRIPEMD160\s0()\fR computes the \s-1RIPEMD\-160\s0 message digest of the \fBn\fR
984263bc 159bytes at \fBd\fR and places it in \fBmd\fR (which must have space for
8b0cefbb 160\&\s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output). If \fBmd\fR is \s-1NULL\s0, the digest
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161is placed in a static array.
162.PP
163The following functions may be used if the message is not completely
164stored in memory:
165.PP
8b0cefbb 166\&\fIRIPEMD160_Init()\fR initializes a \fB\s-1RIPEMD160_CTX\s0\fR structure.
984263bc 167.PP
8b0cefbb 168\&\fIRIPEMD160_Update()\fR can be called repeatedly with chunks of the message to
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169be hashed (\fBlen\fR bytes at \fBdata\fR).
170.PP
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171\&\fIRIPEMD160_Final()\fR places the message digest in \fBmd\fR, which must have
172space for \s-1RIPEMD160_DIGEST_LENGTH\s0 == 20 bytes of output, and erases
173the \fB\s-1RIPEMD160_CTX\s0\fR.
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174.PP
175Applications should use the higher level functions
8b0cefbb 176\&\fIEVP_DigestInit\fR\|(3) etc. instead of calling the
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177hash functions directly.
178.SH "RETURN VALUES"
8b0cefbb 179.IX Header "RETURN VALUES"
aac4ff6f 180\&\s-1\fIRIPEMD160\s0()\fR returns a pointer to the hash value.
984263bc 181.PP
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182\&\fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and \fIRIPEMD160_Final()\fR return 1 for
183success, 0 otherwise.
984263bc 184.SH "CONFORMING TO"
74dab6c2 185.IX Header "CONFORMING TO"
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186\&\s-1ISO/IEC\s0 10118\-3 (draft) (??)
187.SH "SEE ALSO"
74dab6c2 188.IX Header "SEE ALSO"
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189\&\fIsha\fR\|(3), \fIhmac\fR\|(3), \fIEVP_DigestInit\fR\|(3)
190.SH "HISTORY"
984263bc 191.IX Header "HISTORY"
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192\&\s-1\fIRIPEMD160\s0()\fR, \fIRIPEMD160_Init()\fR, \fIRIPEMD160_Update()\fR and
193\&\fIRIPEMD160_Final()\fR are available since SSLeay 0.9.0.