1 .\" $OpenBSD: MD5.3,v 1.4 2016/11/27 16:20:15 schwarze Exp $
2 .\" OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400
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52 .Dd $Mdocdate: November 27 2016 $
68 .Nd MD2, MD4, and MD5 hash functions
73 .Fa "const unsigned char *d"
75 .Fa "unsigned char *md"
84 .Fa "const unsigned char *data"
85 .Fa "unsigned long len"
89 .Fa "unsigned char *md"
95 .Fa "const unsigned char *d"
97 .Fa "unsigned char *md"
106 .Fa "const void *data"
107 .Fa "unsigned long len"
111 .Fa "unsigned char *md"
117 .Fa "const unsigned char *d"
118 .Fa "unsigned long n"
119 .Fa "unsigned char *md"
128 .Fa "const void *data"
129 .Fa "unsigned long len"
133 .Fa "unsigned char *md"
137 MD2, MD4, and MD5 are cryptographic hash functions with a 128-bit
144 compute the MD2, MD4, and MD5 message digest of the
150 which must have space for
151 .Dv MD2_DIGEST_LENGTH No ==
152 .Dv MD4_DIGEST_LENGTH No ==
153 .Dv MD5_DIGEST_LENGTH No == 16
159 the digest is placed in a static array.
161 The following functions may be used if the message is not completely
170 can be called repeatedly with chunks of the message to be hashed
171 .Pq Fa len No bytes at Fa data .
174 places the message digest in
176 which must have space for
177 .Dv MD2_DIGEST_LENGTH No == 16
178 bytes of output, and erases the
188 are analogous using an
194 Applications should use the higher level functions
196 etc. instead of calling these hash functions directly.
202 return pointers to the hash value.
214 return 1 for success or 0 otherwise.
218 RFC 1319, RFC 1320, RFC 1321
229 are available in all versions of SSLeay and OpenSSL.
235 are available in OpenSSL 0.9.6 and above.