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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Diffstat (limited to 'openssl/doc/crypto/md5.pod')
-rw-r--r--openssl/doc/crypto/md5.pod101
1 files changed, 101 insertions, 0 deletions
diff --git a/openssl/doc/crypto/md5.pod b/openssl/doc/crypto/md5.pod
new file mode 100644
index 000000000..d11d5c32c
--- /dev/null
+++ b/openssl/doc/crypto/md5.pod
@@ -0,0 +1,101 @@
+=pod
+
+=head1 NAME
+
+MD2, MD4, MD5, MD2_Init, MD2_Update, MD2_Final, MD4_Init, MD4_Update,
+MD4_Final, MD5_Init, MD5_Update, MD5_Final - MD2, MD4, and MD5 hash functions
+
+=head1 SYNOPSIS
+
+ #include <openssl/md2.h>
+
+ unsigned char *MD2(const unsigned char *d, unsigned long n,
+ unsigned char *md);
+
+ int MD2_Init(MD2_CTX *c);
+ int MD2_Update(MD2_CTX *c, const unsigned char *data,
+ unsigned long len);
+ int MD2_Final(unsigned char *md, MD2_CTX *c);
+
+
+ #include <openssl/md4.h>
+
+ unsigned char *MD4(const unsigned char *d, unsigned long n,
+ unsigned char *md);
+
+ int MD4_Init(MD4_CTX *c);
+ int MD4_Update(MD4_CTX *c, const void *data,
+ unsigned long len);
+ int MD4_Final(unsigned char *md, MD4_CTX *c);
+
+
+ #include <openssl/md5.h>
+
+ unsigned char *MD5(const unsigned char *d, unsigned long n,
+ unsigned char *md);
+
+ int MD5_Init(MD5_CTX *c);
+ int MD5_Update(MD5_CTX *c, const void *data,
+ unsigned long len);
+ int MD5_Final(unsigned char *md, MD5_CTX *c);
+
+=head1 DESCRIPTION
+
+MD2, MD4, and MD5 are cryptographic hash functions with a 128 bit output.
+
+MD2(), MD4(), and MD5() compute the MD2, MD4, and MD5 message digest
+of the B<n> bytes at B<d> and place it in B<md> (which must have space
+for MD2_DIGEST_LENGTH == MD4_DIGEST_LENGTH == MD5_DIGEST_LENGTH == 16
+bytes of output). If B<md> is NULL, the digest is placed in a static
+array.
+
+The following functions may be used if the message is not completely
+stored in memory:
+
+MD2_Init() initializes a B<MD2_CTX> structure.
+
+MD2_Update() can be called repeatedly with chunks of the message to
+be hashed (B<len> bytes at B<data>).
+
+MD2_Final() places the message digest in B<md>, which must have space
+for MD2_DIGEST_LENGTH == 16 bytes of output, and erases the B<MD2_CTX>.
+
+MD4_Init(), MD4_Update(), MD4_Final(), MD5_Init(), MD5_Update(), and
+MD5_Final() are analogous using an B<MD4_CTX> and B<MD5_CTX> structure.
+
+Applications should use the higher level functions
+L<EVP_DigestInit(3)|EVP_DigestInit(3)>
+etc. instead of calling the hash functions directly.
+
+=head1 NOTE
+
+MD2, MD4, and MD5 are recommended only for compatibility with existing
+applications. In new applications, SHA-1 or RIPEMD-160 should be
+preferred.
+
+=head1 RETURN VALUES
+
+MD2(), MD4(), and MD5() return pointers to the hash value.
+
+MD2_Init(), MD2_Update(), MD2_Final(), MD4_Init(), MD4_Update(),
+MD4_Final(), MD5_Init(), MD5_Update(), and MD5_Final() return 1 for
+success, 0 otherwise.
+
+=head1 CONFORMING TO
+
+RFC 1319, RFC 1320, RFC 1321
+
+=head1 SEE ALSO
+
+L<sha(3)|sha(3)>, L<ripemd(3)|ripemd(3)>, L<EVP_DigestInit(3)|EVP_DigestInit(3)>
+
+=head1 HISTORY
+
+MD2(), MD2_Init(), MD2_Update() MD2_Final(), MD5(), MD5_Init(),
+MD5_Update() and MD5_Final() are available in all versions of SSLeay
+and OpenSSL.
+
+MD4(), MD4_Init(), and MD4_Update() are available in OpenSSL 0.9.6 and
+above.
+
+=cut