5 MD2, MD5, MD2_Init, MD2_Update, MD2_Final, MD5_Init, MD5_Update,
6 MD5_Final - MD2 and MD5 hash functions
10 #include <openssl/md2.h>
12 unsigned char *MD2(const unsigned char *d, unsigned long n,
15 void MD2_Init(MD2_CTX *c);
16 void MD2_Update(MD2_CTX *c, const unsigned char *data,
18 void MD2_Final(unsigned char *md, MD2_CTX *c);
21 #include <openssl/md5.h>
23 unsigned char *MD5(const unsigned char *d, unsigned long n,
26 void MD5_Init(MD5_CTX *c);
27 void MD5_Update(MD5_CTX *c, const unsigned char *data,
29 void MD5_Final(unsigned char *md, MD5_CTX *c);
33 MD2 and MD5 are cryptographic hash functions with a 128 bit output.
35 MD2() and MD5() compute the MD2 and MD5 message digest of the B<n>
36 bytes at B<d> and place it in B<md> (which must have space for
37 MD2_DIGEST_LENGTH == MD5_DIGEST_LENGTH == 16 bytes of output). If
38 B<md> is NULL, the digest is placed in a static array.
40 The following functions may be used if the message is not completely
43 MD2_Init() initializes a B<MD2_CTX> structure.
45 MD2_Update() can be called repeatedly with chunks of the message to
46 be hashed (B<len> bytes at B<data>).
48 MD2_Final() places the message digest in B<md>, which must have space
49 for MD2_DIGEST_LENGTH == 16 bytes of output, and erases the B<MD2_CTX>.
51 MD5_Init(), MD5_Update() and MD5_Final() are analogous using an
54 Applications should use the higher level functions EVP_DigestInit(3) etc.
55 instead of calling the hash functions directly.
59 MD2 and MD5 are recommended only for compatibility with existing
60 applications. In new applications, SHA-1 or RIPEMD-160 should be
65 MD2() and MD5() return pointers to the hash value.
67 MD2_Init(), MD2_Update() MD2_Final(), MD5_Init(), MD5_Update() and
68 MD5_Final() do not return values.
76 L<sha(3)|sha(3)>, L<ripemd(3)|ripemd(3)>, L<EVP_DigestInit(3)|EVP_DigestInit(3)>
80 MD2(), MD2_Init(), MD2_Update() MD2_Final(), MD5(), MD5_Init(),
81 MD5_Update() and MD5_Final() are available in all versions of SSLeay