Add documentation for the -no_alt_chains option for various apps, as well as

[openssl.git] / doc / crypto / sha.pod

diff --git a/doc/crypto/sha.pod b/doc/crypto/sha.pod
index 57b0fb6da4223e1b58ded39328a63acd5e723a8d..4c1ab7102289971f47aa55d44eb0f59a90af2bac 100644 (file)
--- a/doc/crypto/sha.pod
+++ b/doc/crypto/sha.pod
@@ -11,10 +11,10 @@ SHA1, SHA1_Init, SHA1_Update, SHA1_Final - Secure Hash Algorithm
  unsigned char *SHA1(const unsigned char *d, unsigned long n,
                   unsigned char *md);
 
- void SHA1_Init(SHA_CTX *c);
- void SHA1_Update(SHA_CTX *c, const void *data,
+ int SHA1_Init(SHA_CTX *c);
+ int SHA1_Update(SHA_CTX *c, const void *data,
                   unsigned long len);
- void SHA1_Final(unsigned char *md, SHA_CTX *c);
+ int SHA1_Final(unsigned char *md, SHA_CTX *c);
 
 =head1 DESCRIPTION
 
@@ -37,7 +37,8 @@ be hashed (B<len> bytes at B<data>).
 SHA1_Final() places the message digest in B<md>, which must have space
 for SHA_DIGEST_LENGTH == 20 bytes of output, and erases the B<SHA_CTX>.
 
-Applications should use the higher level functions EVP_DigestInit(3)
+Applications should use the higher level functions
+L<EVP_DigestInit(3)|EVP_DigestInit(3)>
 etc. instead of calling the hash functions directly.
 
 The predecessor of SHA-1, SHA, is also implemented, but it should be
@@ -47,7 +48,7 @@ used only when backward compatibility is required.
 
 SHA1() returns a pointer to the hash value. 
 
-SHA1_Init(), SHA1_Update() and SHA1_Final() do not return values.
+SHA1_Init(), SHA1_Update() and SHA1_Final() return 1 for success, 0 otherwise.
 
 =head1 CONFORMING TO
 
@@ -59,11 +60,6 @@ ANSI X9.30
 
 =head1 SEE ALSO
 
-L<ripemd(3)|ripemd(3)>, L<hmac(3)|hmac(3)>, L<EVP_DigestInit(3)|EVP_DigestInit(3)>
-
-=head1 HISTORY
-
-SHA1(), SHA1_Init(), SHA1_Update() and SHA1_Final() are available in all
-versions of SSLeay and OpenSSL.
+L<EVP_DigestInit(3)|EVP_DigestInit(3)>
 
 =cut